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Avaya RMON2 User's Manual

1. Configuring RMON and RMON2 BayRS Version 12 10 Site Manager Software Version 6 10 Part No 300018 A Rev 00 February 1998 Bay Networks e Bay Networks 4401 Great America Parkway 8 Federal Street Santa Clara CA 95054 Billerica MA 01821 Copyright 1998 Bay Networks Inc All rights reserved Printed in the USA February 1998 The information in this document is subject to change without notice The statements configurations technical data and recommendations in this document are believed to be accurate and reliable but are presented without express or implied warranty Users must take full responsibility for their applications of any products specified in this document The information in this document is proprietary to Bay Networks Inc The software described in this document is furnished under a license agreement and may only be used in accordance with the terms of that license A summary of the Software License is included in this document Trademarks ACE AN BCN BLN BN FRE GAME Optivity PPX Quick2Config and Bay Networks are registered trademarks and Advanced Remote Node ANH ARN BayRS BayStack Optivity Analysis Optivity Enterprise Optivity LAN System 5000 and the Bay Networks logo are trademarks of Bay Networks Inc Microsoft MS MS DOS Win32 Windows and Windows NT are registered trademarks of Microsoft Corporation All other trademarks and registered trademarks are the property of their
2. Configuring an Ethernet DCM for AN ANH Routers To configure an Ethernet DCM for an AN ANH router complete the following steps Site Manager Procedure You do this System responds 1 In the Configuration Manager window choose the AN router model 2 Click on Confirm 3 Choose a net module for the DCM for example 8pt EHub 3S N1 1 DOM then click on OK 4 Choose the link or net module connector on which you are configuring the Ethernet DOM for example XTCVR then click on OK The Select Protocols window opens 5 Choose IP then click on OK The IP Configuration window opens 6 Setthe following parameters IP Address Subnet Mask Transmit Bcast Addr UnNumbered Assoc Address Click on Help or see Configuring IP Services for parameter descriptions 7 Click on OK You return to the Configuration Manager window 300018 A Rev 00 2 5 Configuring RMON and RMON2 Configuring an Ethernet DCM for ARN Routers To configure an Ethernet DCM for an ARN router complete the following steps Site Manager Procedure You do this System responds 1 In the Configuration Manager window choose an ARN router model Click on Confirm 3 Choose the base expansion or adapter module you want to configure for the ARN router You must choose each module separately For example For a base module choose Ethernet For an expansion
3. Customizing a DCM for RMON and RMON2 Enabling and Disabling the RMON Matrix Control Table By default the RMON Default Matrix parameter is set to Disable meaning that the DCM does not create the RMON matrix control table when it boots If your RMON network management application does not enable and disable its own matrix configuration during normal operation you may need to set the RMON Default Matrix parameter to Enable The DCM allows only one instance of the matrix control table To enable or disable the creation of the RMON matrix control table complete the following steps Site Manager Procedure You do this System responds 1 In the Configuration Manager window choose Platform The Platform menu opens Choose DCM 11 0 and later 3 Choose Global The DCM 11 0 and later menu opens The Global menu opens 4 Choose Base Module DCM or Expansion Module DCM The Edit Base Module DCM Parameters window or the Edit Expansion Module DCM Parameters window opens Set the Configuration Mode parameter to Shared Memory Click on Help or see the parameter description on A 4 Set the RMON Default Matrix parameter Click on Help or see the parameter description on page A 6 Click on OK You return to the Configuration Manager window 300018 A Rev 00 4 9 Configuring RMON and RMON2 Saving the Configuration Information By default the DCM saves the config
4. Learn about the RMON and RMON2 MIB groups Appendix B Upgrade the DCM software image in BayStack AN ANH and ARN Appendix C routers 300018 A Rev 00 xiii Configuring RMON and RMON2 Before You Begin Before using this guide you must complete the following procedures For a new router e Install the router refer to the installation guide that came with your router e Connect the router to the network and create a pilot configuration file refer to Quick Starting Routers or Configuring BayStack Remote Access Make sure that you are running the latest version of Bay Networks Site Manager and router software For instructions refer to the BayRS Version 12 10 Document Change Notice Conventions angle brackets gt bold text italic text quotation marks Screen text separator gt Indicate that you choose the text to enter based on the description inside the brackets Do not type the brackets when entering the command Example if command syntax is volume number filename you enter 1 dcm image Indicates text that you need to enter command names and buttons in menu paths Example Enter wfsm amp Example Use the dinfo command Example ATM DXI gt Interfaces gt PVCs identifies the PVCs button in the window that appears when you select the Interfaces option from the ATM DXI menu Indicates variable values in command syntax descriptions new terms file and directory nam
5. Base Module DCM or Expansion Module DCM RMON2 RMON RMON Determines the Ethernet DCM from which you want to collect RMON2 statistics You use this parameter only when you have multiple Ethernet DCMs on a network running RMON and you need to choose which Ethernet DCM to collect RMON2 information from Choose RMON2 to collect RMONG statistics for the Ethernet DCM Any other Ethernet DCMs default to RMON 1 3 6 1 4 1 18 3 3 2 16 2 1 15 A 6 300018 A Rev 00 Appendix B RMON and RMON 2 MIB Groups This appendix defines the RMON and RMON2 MIB groups and provides information about RMON memory usage and interoperability issues RMON functions are described without referring to the low level details of the RMON MIB which are described in RFC 1757 and RFC 2021 This appendix contains the following information Topic Page RMON MIB Groups Bi RMON2 MIB Groups B 6 Memory Requirements for RMON Groups B 11 RMON MIB Groups RMON provides information about layers 1 and 2 of the seven layer OSI network model You can monitor information on an Ethernet network through nine different MIB groups that comprise the RMON specification RFC 1757 defines the function and organization of the RMON MIB groups Bay Networks implements the following MIB groups in its RMON agent for BayStack AN ANH and ARN routers e Statistics e History e Host e HostTopN e Matrix 300018 A Rev 00 B 1 Configuring RMO
6. If the RMON agent determines that a sample crosses the threshold values it generates an event The RMON agent monitors any variables that resolve to an ASN 1 primitive type of integer integer counter gauge or TimeTick You can specify rising or falling thresholds indicating network faults such as slow throughput or other network related performance problems You specify rising thresholds when you want to be notified that an alarm has risen above the threshold you specified You specify falling thresholds when you want to be notified that the network is behaving normally again For example you might specify a falling threshold of 30 collisions per second to indicate a return to acceptable behavior When you configure an alarm condition you must define the following values e The monitoring interval over which data is sampled e The variable to be sampled Rising and falling thresholds to detect when network trouble starts and ends B 4 300018 A Rev 00 RMON and RMON2 MIB Groups e The event that takes place when a rising threshold is crossed e The event that takes place when a falling threshold is crossed Event Group The event group allows for the generation of an SNMP trap a log entry or both for any event you choose An event can occur when the sample variable exceeds the alarm threshold or exceeds a channel match event generated on an Ethernet DCM Traps can be delivered by the RMON agent to multiple management sta
7. XV Configuring RMON and RMON2 Bay Networks Technical Publications You can now print technical manuals and release notes free directly from the Internet Go to support baynetworks com library tpubs Find the Bay Networks products for which you need documentation Then locate the specific category and model or version for your hardware or software product Using Adobe Acrobat Reader you can open the manuals and release notes search for the sections you need and print them on most standard printers You can download Acrobat Reader free from the Adobe Systems Web site www adobe com Documentation sets and CDs are available through your local Bay Networks sales office or account representative Bay Networks Customer Service You can purchase a support contract from your Bay Networks distributor or authorized reseller or directly from Bay Networks Services For information about or to purchase a Bay Networks service contract either call your local Bay Networks field sales office or one of the following numbers Region Telephone number Fax number United States and 800 2LANWAN then enter Express Routing 978 916 3514 Canada Code ERC 290 when prompted to purchase or renew a service contract 978 916 8880 direct Europe 33 4 92 96 69 66 33 4 92 96 69 96 Asia Pacific 61 2 9927 8888 61 2 9927 8899 Latin America 561 988 7661 561 988 7550 Information about customer service is also available on the Worl
8. data tables B 2 interoperability issues B 11 memory use B 11 RMON Default Host parameter A 5 RMON Default Matrix parameter A 6 RMON Max Host parameter A 5 RMON MIB described 1 1 modifying RMON default parameters 4 7 RMON MIB groups 1 2 B 4 RMON network management software described 1 12 implementation of RMON MIB groups B 11 RMON Object Support parameter A 6 RMON RMON2 Bay Networks implementation 1 8 components 1 9 customizing parameters 4 3 specifying data collection type 4 3 starting AN ANH 2 4 ARN 2 6 preparing a configuration file 2 4 RMON2 1 3 RMON2 MIB groups described 1 5 B 6 router hardware and software requirements AN ANH 2 2 ARN 2 3 300018 A Rev 00 S Save Configuration Info parameter A 4 Simple Network Management Protocol SNMP 1 1 software requirements AN ANH 2 2 ARN 2 3 statistics group RMON described B 2 memory requirements B 12 Subnet Mask parameter 2 5 T Technical Solutions Centers xvii Transmit Bcast Addr parameter 2 5 U UnNumbered Assoc Address parameter 2 5 upgrading DCM boot image determining need for C 1 using Site Manager C 3 using Technician Interface C 5 300018 A Rev 00 Index 3
9. gage eH B 3 Fost OCN EC rr mre UU B 3 Matrix Group beide steeds TEE ET rere rere PT seems Gebers T B 3 Iter CDD aurei bera aate dee Gc ei er on acad Fabre uu in err B 3 OTe It opera MENU TUNE NR TE A T T DUO B 4 PAIR COG me B 4 mhciAc D c B 5 Event Trap Considerations ee orsus ere direia onet T m B 6 axi e PES cif d c caveninrtuatactie a Macnee eee Gee edie B 6 Protocol Directory Group rocii e a Liu roba Cv aD s Eo d B 7 Protocol Disfibullanm GOUD odictor vi ecaet str axe as ARE Forts caus ura Vin dete eu abt pee dua a anaes B 8 Address VENI GEB csse ree HORROR Eo PO CURE Et apo Fa pe pa etc bap a B 9 BOE Laor Hosp RD assie a aiaa ic ga de ria amni boca iuda od B 9 Applicaton Layer Host GROUP ideccsccce sec ieb tae tenaci tocca ise eb Fees ea oedip pred B 9 Network Layer Valea GOUD iuisiie i cbUa qa a ER Reid i a baee Da pa gt p cu RR Ra B 9 Application Layer Matrix Group TT B 10 Memory Requirements for RMON GEFOUDS ssccccsccctcsccosscivincstesncscactteteasemiendconateunsnnranes B 11 E EEN aT a M E T E Rc B 12 History Group etnies aonais Aa PT AT manan T aan bends Bie Hoet GUD o ien oai das iei e Dia dba Red etree cer CHR nner reer B 13 zi NTe spp Ee s d ir PCT T B 14 uie gno e e P B 14 Filter and Captors CEDENS soda gera ba paca i adco adeb t Pd poet ama o BIL
10. you must set up the SNMP manager table In the SNMP manager table you add the SNMP community names that you configured for the network management application for example Optivity Analysis for Windows NT and for the hosts on which you are running applications If you do not make these changes the router will be unable to send trap events to the network management station See Configuring SNMP BootP DHCP and RARP Services for instructions on how to set up an SNMP manager table When you set up the SNMP manager table you can do one of the following use the SNMP community names that the network management application uses and modify the trap receiving tables on the router to use these names or configure the router to use specific SNMP community names and modify the network management software to use these names When configuring SNMP community managers you must assign each manager a specific IP address you cannot specify a wildcard for the community manager address Also you must configure community managers to receive all traps not just generic traps You do this by changing the Trap Types parameter in the SNMP Manager window from Generic the default to All For more information about changing communities and community manager parameters see Configuring SNMP BootP DHCP and RARP Services RMON MIB Groups With RMON2 you can view traffic statistics by protocol and by application within the protocol to obtain an enterprise view
11. Application Layer Matrix Statistics B 10 300018 A Rev 00 RMON and RMON2 MIB Groups Memory Requirements for RMON Groups To optimize the use of your network management applications such as Optivity Analysis for Windows NT you need to understand each RMON group s memory requirements The total amount of available RMON and RMON2 memory depends on the DRAM available on the Ethernet DCM Table B 1 Table B 1 DRAM and RMON Memory Size Installed DRAM MB Available RMON Memory in Bytes 4 2 077 330 8 5 222 034 16 12 561 042 Note If the RMON memory pool is full or if the RMON agent reaches an implementation limit the agent responds to an SNMP set command on an RMON control table entry with an SNMP GEN ERROR The following sections describe how much memory you need to e Configure an RMON group for example the matrix group or the filter and capture groups e Store the data for an RMON group for example the packets on Ethernet DCM captures In the following sections the term configuration means the set of control tables for a group For example a matrix configuration includes only the matrixControlTable Note that you can create more than one configuration for some RMON groups For example you can create more than one history configuration allowing you to specify different intervals for sampling statistics 300018 A Rev 00 B 11 Configuring RMON and RMON2 Statistics Group Wh
12. Chapter 1 RMON and RMON Overview RMON and RMON2 are MIB standards developed to provide powerful remote troubleshooting and monitoring within a LAN segment and across an enterprise network This chapter includes the following information Topic Page RMON MIB i RMON2 MIB 13 RMON and RMON Support on Bay Networks Routers 1 8 RMON and RMONe Architecture 1 9 RMON MIB RMON is a standard MIB that defines current and historical statistics and control objects at the media access control MAC layer allowing you to capture real time information across the entire network The RMON standard is an SNMP MIB definition described in RFC 1757 formerly 1271 for Ethernet The RMON MIB provides a standard method for monitoring the basic operations of the Ethernet network providing interoperability between Simple Network Management SNMP management stations and monitoring agents RMON also provides a powerful alarm and event mechanism for setting thresholds and for notifying you of changes in network behavior You can use RMON to analyze and monitor network traffic data within remote LAN segments from a central location enabling you to detect isolate diagnose and report potential and actual network problems before they escalate to crisis situations For example the Ethernet DCM can identify the hosts on a network that generate the most traffic or errors 300018 A Rev 00 14 Configuring RMON and RMON2 RMON allows y
13. Image Version line does not indicate V1 4 1 or V1 4 2 go to the next section to upgrade the DCM agent software Upgrading the DCM Software Image Upgrading the DCM software image in BayStack routers involves the following tasks Transferring the DCM software image from CD to your PC or UNIX workstation Transferring the DCM software image from your PC or UNIX workstation to the router s flash memory card Transferring the DCM software image from the router s flash memory to the DCM s flash memory C 2 300018 A Rev 00 Upgrading the DCM Software Image Using Site Manager To upgrade the DCM software image in a BayStack router using Site Manager 1 Transfer the DCM software image for example in 2 00 0bj to a PC or UNIX workstation from e The latest BayRS CD release media The World Wide Web URL http support baynetworks com software Router Contact the Bay Networks Technical Solutions Center if you do not have access to these sources 2 Transfer the DCM software image from your PC or workstation to the router s flash memory Use the Site Manager Router Files Manager utility 3 Transfer the DCM software image from the router s flash memory to the DCM flash memory as follows In the Configuration Manager window Figure C 1 choose Platform gt DCM 11 0 and later gt Global gt Base Module DCM or Expansion Module DCM Soi used EES Figure C 1 Choosing DCMMW Global Configura
14. Parameters on page 4 7 Matrix Group When you enable the Ethernet DCM the default setting for the RMON Default Matrix parameter is Disable To create a matrix configuration set the RMON Default Matrix parameter to Enable see Modifying Default RMON MIB Group Parameters on page 4 7 Some RMON network management applications expect the DCM to set up a matrix configuration but others set up their own configurations Note The RMON agent allows you to create only one matrix configuration Make sure to set the RMON Default Matrix parameter according to the expectations of the RMON network management application The matrix configuration requires 212 bytes The matrix data requires approximately 178 bytes of memory per source destination pair that the Ethernet DCM detects on a segment 300018 A Rev 00 RMON and RMON2 MIB Groups Filter and Capture Groups 2 Caution The memory you need for a filter capture configuration and for storing captured packets can easily exhaust all the available memory on an Ethernet DCM particularly if the filters are not selective You must create filter and capture configurations through your RMON network management application You can create as many filters and capture buffers as memory permits up to the RMON limit of 65 535 configurations Memory requirements vary greatly according to the size and number of the filters and the size of the capture buffer In most cases you nee
15. S1 server 1 C2 client 2 S2 server 2 C3 client 3 S3 server 3 RMN0003A Figure 1 1 RMON and RMON in the OSI Model 1 4 300018 A Rev 00 RMON and RMON Overview With RMON2 you can also troubleshoot network problems faster and more accurately using statistics from the network layer matrix table which shows the protocol specific traffic between communicating pairs of systems For example with RMON you can learn that a particular server is inactive because it fails to transmit packets With RMON2 you can diagnose the more difficult problem that occurs when the system is active but a particular protocol stack is malfunctioning RMONG provides address translation capabilities that bind MAC layer addresses to network layer addresses making all addresses easier to read and remember You can detect duplicate addresses which helps to solve a common problem that disrupts network routers and virtual LANs RMON allows you to collect the historical data of any counter in the system rather than only a predefined set of statistics For example you can collect historical data on a specific file server or a specific router to router connection RMON2 also lets you configure more flexible and efficient filters to support higher layer protocols Bay Networks implements seven RMON2 MIB groups in its RMON agent for BayStack AN ANH and ARN routers Table 1 2 summarizes the RMON2 MIB groups For more detailed information about t
16. Software is first shipped to Licensee Bay Networks will replace defective media at no charge if it is returned to Bay Networks during the warranty period along with proof of the date of shipment This warranty does not apply if the media has been damaged as a result of accident misuse or abuse The Licensee assumes all responsibility for selection of the Software to achieve Licensee s intended results and for the installation use and results obtained from the Software Bay Networks does not warrant a that the functions contained in the software will meet the Licensee s requirements b that the Software will operate in the hardware or software combinations that the Licensee may select c that the operation of the Software will be uninterrupted or error free or d that all defects in the operation of the Software will be corrected Bay Networks is not obligated to remedy any Software defect that cannot be reproduced with the latest Software release These warranties do not apply to the Software if it has been 1 altered except by Bay Networks or in accordance with its instructions ii used in conjunction with another vendor s product resulting in the defect or iii damaged by improper environment abuse misuse accident or negligence THE FOREGOING WARRANTIES AND LIMITATIONS ARE EXCLUSIVE REMEDIES AND ARE IN LIEU OF ALL OTHER WARRANTIES EXPRESS OR IMPLIED INCLUDING WITHOUT LIMITATION ANY WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PU
17. Topic Page Verifying Minimum DCM Requirements G4 Upgrading the DCM Software Image C 2 Verifying Minimum DCM Requirements To verify the minimum DCM hardware and software requirements 1 Establish a Technician Interface session on the router 2 Verify the correct DCM hardware revision by entering the following command 1 TN get wfDCMEntry wfDCMhwRev The Technician Interface displays information similar to the following wfDCMEntry wfDCMhwRev 1 wfDCMEntry wfDCMhwRev 2 npn E npn E If the Hardware Revision line indicates C or earlier you must upgrade to DCM Hardware Revision E 300018 A Rev 00 C 1 Configuring RMON and RMON2 3 Display the current version of DCM agent software Your version of router software determines which command you enter For a router running Router Software Version 11 0 or later enter the following command to display the DCM agent software version 1 1 get wfDCMEntry wfDCMagentlmageVersion The Technician Interface displays information similar to the following wfDCMmw wfDCMagentlmageVersion l V1 4 2 There are two entries if there are two DCMs installed on an ARN router For an AN or ANH router running Router Software Version 9 0 or 10 0x enter the following command 1 TN get wfDCMmw wfDCMAgentlmageVersion O The Technician Interface displays information similar to the following wfDCMmw wfDCMAgentImageVersion 0 V1 4 2 If the Agent
18. control parameters such as the minimum length of those packets are stored in the filterTable Associated with each filter is a channel a specific path along which data flows Control parameters in the channelTable define how and where the filtered packets flow 300018 A Rev 00 B 3 Configuring RMON and RMON2 Capture Group The capture group enables the capture of packets that satisfy the filter group control parameters for a particular channel Control parameters in the bufferControlTable specify how to transfer data from the channelTable to the captureBufferTable For example you can specify the maximum number of octets from each packet that the group can store in the captureBufferTable To use the capture group you must set up the filter group Alarm Group The alarm group allows you to set an alarm threshold and a sampling interval to enable the RMON agent to generate alarms on any network segment it monitors Alarm thresholds can be based on absolute or delta values so that you can be notified of rapid spikes or drops in a monitored value Each alarm is linked to an event in the event group An event defines an action that is triggered when the alarm threshold is exceeded The alarm group periodically takes statistical samples from variables in the Ethernet DCM and compares them to previously configured thresholds The Alarm Table stores configuration entries that define a variable a polling period and threshold parameters
19. license a to use the Software either on a single computer or if applicable on a single authorized device identified by host ID for which it was originally acquired b to copy the Software solely for backup purposes in support of authorized use of the Software and c to use and copy the associated user manual solely in support of authorized use of the Software by Licensee This license applies to the Software only and does not extend to Bay Networks Agent software or other Bay Networks software products Bay Networks Agent software or other Bay Networks software products are licensed for use under the terms of the applicable Bay Networks Inc Software License Agreement that accompanies such software and upon payment by the end user of the applicable license fees for such software 2 Restrictions on use reservation of rights The Software and user manuals are protected under copyright laws Bay Networks and or its licensors retain all title and ownership in both the Software and user manuals including any revisions made by Bay Networks or its licensors The copyright notice must be reproduced and included with any copy of any portion of the Software or user manuals Licensee may not modify translate decompile disassemble use for any competitive analysis reverse engineer distribute or create derivative works from the Software or user manuals or any copy in whole or in part Except as expressly provided in this Agreement Licensee may not copy o
20. menu opens 4 Choose Base Module DCM or The Edit Base Module DCM Parameters Expansion Module DCM window or the Edit Expansion Module DCM Parameters window opens 5 Setthe Boot Option parameter to Download Click on Help or see the parameter description on page A 2 continued 4 4 300018 A Rev 00 Customizing a DCM for RMON and RMON2 Site Manager Procedure continued You do this System responds 6 Setthe Image Name parameter Click on Help or see the parameter description on page A 3 7 Click on OK You return to the Configuration Manager window Saving the Boot Image File By default the DCM saves the boot image file in DRAM to its local flash memory overwriting the existing image file If you do not want to save the DCM boot image file the image remains in DRAM until the next time the DCM boots set the Image Save Mode parameter to No Save To set the save mode for the image file complete the following steps Site Manager Procedure You do this System responds 1 In the Configuration Manager window The Platform menu opens choose Platform 2 Choose DCM 11 0 and later The DCM 11 0 and later menu opens 3 Choose Global The Global menu opens 4 Choose Base Module DCM or The Edit Base Module DCM Parameters Expansion Module DCM window or the Edit Expansion Module DCM Parameters window opens 5 Set the Image Save Mode parameter Click on Help
21. network failure Optivity Analysis for Windows NT supports the RMON and RMON2 MIBs and provides a powerful interface that allows you to poll the RMON devices probes routers and switches on your network You can poll a device and inquire about errors bandwidth and so forth Optivity Analysis for Windows NT can monitor hundreds or even thousands of LAN segments by dividing large complex networks into more manageable domains Optivity Analysis for Windows NT allows you to view traffic statistics generated from a single LAN groups of LANS or an enterprise network With Optivity Analysis for Windows NT you can establish and report on network trends over extended periods and create baselines that set alarms so that an accurate picture of the network can be portrayed For more information about using Optivity Analysis for Windows NT see Using Optivity Analysis for Windows NT 1 0 300018 A Rev 00 Chapter 2 Starting RMON and RMON2 on AN ANH and ARN Routers This chapter lists the requirements for starting RMON and RMON2 and includes the procedures for configuring RMON and RMON2 on AN ANH and ARN routers using the default configuration values Note If you want to configure the built in version of RMON on an ARN 100 router with no Ethernet DCM go to Chapter 3 Configuring Mini RMON on an ARN 100 Router This chapter contains the following information Topic Page Router Hardware and Sof
22. or see the parameter description on page A 3 6 Click on OK You return to the Configuration Manager window 300018 A Rev 00 4 5 Configuring RMON and RMON2 Specifying the Configuration Mode By default the Ethernet DCM uses the configuration file in its own local flash memory If you want to use the configuration information in the DCM DRAM written by DCMMW from the BayStack router s file system set the Configuration Mode parameter to Shared Memory Shared memory is the area on the Ethernet DCM through which the router s base module and the Ethernet DCM exchange information To specify the configuration mode complete the following steps Site Manager Procedure You do this System responds 1 In the Configuration Manager window choose Platform 2 Choose DCM 11 0 and later The Platform menu opens The DCM 11 0 and later menu opens 3 Choose Global The Global menu opens 4 Choose Base Module DCM or Expansion Module DCM The Edit Base Module DCM Parameters window or the Edit Expansion Module DCM Parameters window opens Set the Configuration Mode parameter Click on Help or see the parameter description on page A 4 Click on OK You return to the Configuration Manager window 4 6 300018 A Rev 00 Customizing a DCM for RMON and RMON2 Modifying Default RMON MIB Group Parameters When you set the configuration mode to Shared Mem
23. router s base module e Network management software which resides on an RMON network management station The RMON network management station sends SNMP set and get commands requesting information from the DCM agent that resides on the Ethernet DCM on the router The RMON agent sends the requested information to the network management station which then processes and displays this information on its console Figure 1 3 illustrates the components of this architecture The sections that follow describe them in more detail 300018 A Rev 00 Configuring RMON and RMON2 Flash memory Ethernet DCM Base module Network management station Optivity Enterprise or management software application Workstation g Ethernet LAN segment Workstation Ethernet LAN RMON Segment data collection i module DCM SNM0013A Figure 1 3 RMON RMON Architecture 1 10 300018 A Rev 00 RMON and RMON Overview Data Collection Module DCM The Ethernet DCM physically connects to the BayStack router base module and the ARN Ethernet expansion module The Ethernet DCM contains a flash memory module for its own boot image and configuration files The Ethernet DCM runs the DCM agent software DCM Agent Software The DCM agent software resides on a DCM installed on an AN ANH or ARN router The DCM agent continually coll
24. to save the configuration information in DRAM to the DCM flash memory Select Save to save the configuration information in DRAM to the DCM flash memory overwriting the existing configuration file Select No Save to avoid overwriting the DCM configuration file 1 3 6 1 4 1 18 3 3 2 16 2 1 11 A 4 300018 A Rev 00 Parameter Path Default Options Function Instructions MIB Object ID Parameter Path Default Options Function Instructions MIB Object ID Ethernet DCM Parameters RMON Max Host Configuration Manager gt Platform gt DCM 11 0 and later gt Global gt Base Module DCM or Expansion Module DCM 500 100 to 8128 Indicates the maximum number of host addresses to be collected in each entry of the RMON host control table The maximum limit depends on the amount of flash memory available in the DCM When the host control table reaches this maximum value the DCM deletes entries based on an LRU least recently used algorithm Recommended values based on DCM memory configurations are 2 to 4 MB 2048 8 MB 4096 16 MB 8128 To verify the number of configured hosts check the MIB object wfDCMmwRMONHost using the Site Manager Statistics tool 1 3 6 1 4 1 18 3 3 2 16 2 1 12 RMON Default Host Configuration Manager gt Platform gt DCM 11 0 and later gt Global gt Base Module DCM or Expansion Module DCM Disable Enable Disable Specifies whether to create the RM
25. DCM Parameters window opens 4 Click on OK to accept the default You return to the Configuration Manager configuration parameters window When you enable the Ethernet DCM the RMON Object Support parameter is set to RMON2 by default allowing the Ethernet DCM to collect both RMON and RMONG statistics You can use Optivity Analysis for UNIX or Optivity Analysis for Windows NT to view and analyze RMON and RMONG statistics 300018 A Rev 00 2 7 Configuring RMON and RMON2 Enabling the Ethernet DCM for ARN Routers To enable the Ethernet DCM for an ARN router complete the following steps Site Manager Procedure You do this System responds 1 In the Configuration Manager window choose Platform The Platform menu opens 2 Choose DCM 11 0 and later The DCM 11 0 and later menu opens 3 Choose Create Base Module DCM or Create Expansion Module DCM You can enable a DCM on both an Ethernet base module and an Ethernet expansion module with an installed DCM The Edit Base Module DCM Parameters window or the Edit Expansion Module DCM Parameters window opens Click on OK to accept the default configuration parameters You return to the Configuration Manager window When you enable the Ethernet DCM the RMON Object Support parameter is set to RMON2 by default allowing the Ethernet DCM to collect both RMON and RMONG statistics You can use Optivity Analysis for UNIX or Optiv
26. E ana d B 15 Alarm and Event Groups nd Tm rere PE PEAT T T Retains B 16 300018 A Rev 00 vii viii Appendix C Upgrading the DCM Software Image Verifying Minimum DCM PlequilelYiBIIle 2 ucscasecesee cuc ccce eerte tane Reip cre dR Rede en atE C 1 Upgrading the DCM Software Image A bheies C 2 Ueno Sis AON oa Ded eser ueque Epid dub bece LAU tbe babet bue Urtuqobus C 3 Using the Technician WETS m apao C 5 Sample Display demlsad Dat ists a ican asian coed bun ap inalubanienaiiasinldwedae lah Ea o C 7 Index 300018 A Rev 00 Figures Figure 1 1 RMON and RMONe in the OSI Model sese 1 4 Figure 1 2 RMON RMONZ MIB Tee Lease ettet nth tana nunt nennt unen ttam n kk 1 7 Figure 1 3 RMONRMONZ AIGIIBGCOIMEIG sccccinscercscctiedciaiaeitesecemmetcineainedgscnadaueddsncdane 1 10 Figure Bl Protocol Directory Statisties Lusso terr t head teen Fa er aa B 7 Figure B 2 Protocol Distribution Statistics Geant poioma popei ti B 8 Figure B 3 Application Layer Matrix Statistics ssssseeeeee B 10 Figure C 1 Choosing DCMMW Global Configuration Parameters C 3 Figure C 2 Edit Base Module DCM Parameters Window sess C 4 300018 A Rev 00 ix Tables Table 1 1 RMON NTILSti p cS 1 2 Table 1 2 RMONZ MIB GEB BC Dus tasur ES ub ia 1 5 Table 1 3 Summary of RMON and RMON Supp
27. N and RMON2 e Filter e Capture The router base module supports the following groups e Alarm e Event RMON MIB Group Controls and Functions Several of the RMON groups in the MIB contain control and data tables Control tables contain control parameters that specify which statistics you want to access and collect You can view and change many entries in a control table Data tables contain statistics the agent collects usually you can only view entries in these tables The following sections describe the function of each group and the tables that each group defines Refer to RFC 1757 for the following information e A list of all the parameters that appear in a control table e The read write status of a control parameter e The default values for control parameters with read write status e A list of all the objects that appear in a data table Statistics Group The statistics group records data that the Ethernet DCM measures on network interfaces The Ethernet DCM creates one entry for each Ethernet interface it monitors and places the entry in the EtherStatsTable The EtherStatsTable also contains control parameters for this group History Group The history group contains a control and data collection function The control function manages the periodic statistical sampling of data from networks and specifies control parameters such as the frequency of data sampling in the historyControlTable B 2 300018 A Rev 00
28. ON host control table at every boot Some RMON network management applications expect the DCM to set up a host configuration others enable and disable their own host configurations during normal operations Note that the DCM allows only one instance of the host control table Select Enable to create the RMON host control table at the next and every subsequent reboot Select Disable to disable default creation of the RMON host control table at boot time 1 3 6 1 4 1 18 3 3 2 16 2 1 13 300018 A Rev 00 A 5 Configuring RMON and RMON2 Parameter Path Default Options Function Instructions MIB Object ID Parameter Path Default Options Function Instructions MIB Object ID RMON Default Matrix Configuration Manager gt Platform gt DCM 11 0 and later gt Global gt Base Module DCM or Expansion Module DCM Disable Enable Disable Specifies whether to create the RMON matrix control table at every boot Some RMON network management applications expect the DCM to set up a matrix configuration others enable and disable their own matrix configurations during normal operations Select Enable to create the RMON matrix control table at the next and every subsequent reboot Select Disable to disable default creation of the RMON matrix control table at boot time 1 3 6 1 4 1 18 3 3 2 16 2 1 14 RMON Object Support Configuration Manager gt Platform gt DCM 11 0 and later gt Global gt
29. RMON Max Host parameter Click on Help or see the parameter description on page A 5 7 Click on OK You return to the Configuration Manager window Enabling and Disabling the RMON Host Control Table By default the RMON Host parameter is set to Disable meaning that the DCM does not create the RMON host control table when it boots If your RMON network management application does not enable and disable its own host configuration during normal operation you may need to set the RMON Default Host parameter to Enable The DCM allows only one instance of the host control table To enable or disable the creation of the RMON host control table complete the following steps Site Manager Procedure You do this System responds 1 In the Configuration Manager window choose Platform The Platform menu opens 2 Choose DCM 11 0 and later The DCM 11 0 and later menu opens 3 Choose Global The Global menu opens 4 Choose Base Module DCM or Expansion Module DCM The Edit Base Module DCM Parameters window or the Edit Expansion Module DCM Parameters window opens Set the Configuration Mode parameter to Shared Memory Click on Help or see the parameter description on A 4 Set the RMON Default Host parameter Click on Help or see the parameter description on page A 5 Click on OK You return to the Configuration Manager window 4 8 300018 A Rev 00
30. RMON and RMON operation on BayStack AN ANH routers Table 2 1 AN ANH Requirements for Using RMON and RMON2 Software Hardware Recommended Version DCM hardware Revision E Boot PROM Version 9 00c anboot exe v9 00c or later Diagnostic PROM Version v7 30 andiag exe v7 30 or later BayRS BayRS Version 12 10 an exe v12 10 or later DCM agent software DCM Agent Software Version 2 00 in 2 00 0bj 2 2 300018 A Rev 00 Starting RMON and RMON 2 on AN ANH and ARN Routers Table 2 2 lists the software and hardware requirements for RMON and RMON2 operation on BayStack ARN routers Table 2 2 ARN Requirements for Using RMON and RMON2 Software Hardware Recommended Version DCM hardware Revision E Boot PROM Version 1 18 arnboot exe v1 18 or later Diagnostic PROM Version 1 34 arndiag exe v1 34 or later BayRS Version 12 10 arn exe v12 10 or later DCM agent software Version 2 00 in_2 00 0bj Caution Enabling an Ethernet DCM with DCM agent software earlier than Version 2 00 generates a warning log message which prevents the Ethernet DCM from booting successfully 4 Verify minimum DCM requirements to determine whether you need to upgrade the DCM software image on the router For instructions see Appendix C Upgrading the DCM Software Image 5 Configure an Ethernet interface for each LAN segment you want to monitor 6 Install and configur
31. RMON and RMON2 MIB Groups The data collection function records periodic statistical samples from Ethernet networks for example interval start time and number of packets This function places the statistical samples in the etherHistory Table Host Group The host group identifies hosts on the network by recording the source and destination MAC addresses in good packets and places the information in the hostTable This group also records the time it discovered a host on the network in the hostTimeTable The hostControlTable specifies control parameters such as which monitoring operations the Ethernet DCM performs and contains some information about the monitoring process HostTopN Group The HostTopN group ranks hosts according to a statistic type For example you can rank the hosts by the number of errors they generate Control parameters for this group are stored in the hostTopNControlTable and data this group generates is stored in the hostTopNTable To use the HostTopN group you must set up the host group Matrix Group The matrix group stores statistics for an interchange between hosts at different addresses This group s control parameters such as number of hosts are stored in the matrixControlTable When the matrix group receives information from a good packet it places data in both the matrix SDTable and the matrixDS Table Filter Group The filter group specifies the types of packets the Ethernet DCM can capture Filter
32. RPOSE Licensee is responsible for the security of 300018 A Rev 00 iii its own data and information and for maintaining adequate procedures apart from the Software to reconstruct lost or altered files data or programs 4 Limitation of liability IN NO EVENT WILL BAY NETWORKS OR ITS LICENSORS BE LIABLE FOR ANY COST OF SUBSTITUTE PROCUREMENT SPECIAL INDIRECT INCIDENTAL OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES RESULTING FROM INACCURATE OR LOST DATA OR LOSS OF USE OR PROFITS ARISING OUT OF OR IN CONNECTION WITH THE PERFORMANCE OF THE SOFTWARE EVEN IF BAY NETWORKS HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES IN NO EVENT SHALL THE LIABILITY OF BAY NETWORKS RELATING TO THE SOFTWARE OR THIS AGREEMENT EXCEED THE PRICE PAID TO BAY NETWORKS FOR THE SOFTWARE LICENSE 5 Government Licensees This provision applies to all Software and documentation acquired directly or indirectly by or on behalf of the United States Government The Software and documentation are commercial products licensed on the open market at market prices and were developed entirely at private expense and without the use of any U S Government funds The license to the U S Government is granted only with restricted rights and use duplication or disclosure by the U S Government is subject to the restrictions set forth in subparagraph c 1 of the Commercial Computer Software Restricted Rights clause of FAR 52 227 19 and the limitations set out in this license for c
33. Topic Page Disabling the Ethernet DCM 4 2 Specifying RMON or RMON2 Data Collection 4 3 Specifying the DCM Boot Image Name 4 4 Saving the Boot Image File 4 5 Specifying the Configuration Mode 4 6 Modifying Default RMON MIB Group Parameters 4 7 Saving the Configuration Information 4 10 Rebooting the Ethernet DCM 4 11 Deleting the Ethernet DCM Software Subsystem 4 12 Using the Technician Interface to Manage a DCM 4 13 For detailed information about RMON and RMON2 and the Bay Networks implementation of RMON and RMON2 see Chapter 1 RMON and RMON2 Overview For a description of all DCMMW parameters see Appendix A Ethernet DCM Parameters 300018 A Rev 00 4 1 Configuring RMON and RMON2 Disabling the Ethernet DCM Before you can modify DCMMW configuration parameters for an installed Ethernet DCM you must temporarily disable the Ethernet DCM from collecting data When you finish modifying the DCMMW configuration parameters you must reenable the Ethernet DCM for these changes to take effect To temporarily disable the DCM from collecting data complete the following steps Site Manager Procedure You do this System responds 1 In the Configuration Manager window choose Platform The Platform menu opens 2 Choose DCM 11 0 and later The DCM 11 0 and later menu opens 3 Choose Global The Global menu opens 4 Choose one or both of the following options Base Module DCM Expansion M
34. addresses seen in all packets with no MAC errors to this table and increments octet and packet counts for all packets with no MAC errors To implement this group you must first implement the Network Layer Matrix group Figure B 3 shows the statistics collected for the Application Layer Matrix group using the Optivity Analysis for Windows NT application EB RMON2 Matrix 192 168 153 80 2 192 168 153 80 File View Polling Table 3p w e aus nl A sna 700 n A netbios 800 134 177 12322 134 177 123 22 192 Ex 153 76 19215815376 n A ip 100 13417712322 134177 123 22 19215815376 192 158 153 76 GF Adiomp 101 13417712322 13417712322 18216815376 182168 15376 sr Apia 13417712322 13417712322 19216815382 182 16815382 m 134 177 123 22 134177 123 22 19215815382 192158 153 82 at Audp 102 134 177 123 22 134 177 123 22 192165815382 192 168 153 82 nl A ipx 500 3 A echo 508 ar A error 509 Top 5 of Pkts al A spx 506 al A nep 502 i3 A sap 504 is Arip 501 is A nbio 510 a A burst 503 is Anlsp 511 i ar A snmp 512 134 177 123 22 W A ddp 300 B 134 177 123 22 ia A nbp 311 134 177 123 22 fal A atp 306 V 134 177 123 22 3 A aep 303 E 134 177 123 22 s A tmp 301 far A zip 305 3 A adsp 304 nj Optivity Analysis for Windows NT Get of Protocol Directory Succeeded Searching 70 Index 2 Figure B 3
35. agement software application also known as a client runs on a network management station which can be a workstation or PC running UNIX or Windows Many RMON clients located at various locations can simultaneously retrieve information from an AN ANH or ARN router located on a specific LAN segment within an internetwork Optivity Analysis for Windows NT 1s an example of an RMON network management application After you enable the Ethernet DCM on a router and the Ethernet DCM is collecting statistics you can use the following network management applications to view analyze and monitor network RMON and RMONG statistics e Optivity Analysis for UNIX and Optivity LAN applications both of which are part of the Optivity Enterprise network management suite e Optivity Analysis for Windows NT Optivity Analysis for UNIX Optivity Analysis for UNIX is a set of graphical network management applications based on RMON These Optivity applications offer powerful RMONc based tools that let you view statistics for an enterprise wide internetwork for specific LAN segments within an internetwork or for hosts on a LAN segment Each RMON tool is a complete application that represents an intelligent implementation of the RMON and RMON2 MIB groups After the tool requests and receives information from the network management station it processes the information and displays a graphical summary of network traffic Each tool is configurable so you can ob
36. anager gt Platform gt DCM 11 0 and later gt Global gt Base Module DCM or Expansion Module DCM Save Save No Save Specifies whether the DCM saves the active image to its local flash memory To save the active DCM boot image file to the DCM local flash memory overwriting the existing saved image select Save Select No Save if you do not want to save the DCM boot image file The image remains in DRAM until the next time the DCM boots 1 3 6 1 4 1 18 3 3 2 16 2 1 9 300018 A Rev 00 A 3 Configuring RMON and RMON2 Parameter Path Default Options Function Instructions MIB Object ID Parameter Path Default Options Function Instructions MIB Object ID Configuration Mode Configuration Manager Platform DCM 11 0 and later Global Base Module DCM or Expansion Module DCM Local Local Shared Memory Specifies whether to use the configuration information in DCM shared memory DRAM or the configuration information saved on the DCM s flash memory Select Local to use the default configuration information in the DCM local flash memory Select Shared Memory to use the configuration information from the BayStack router s flash memory stored in DCM DRAM 1 3 6 1 4 1 18 3 3 2 16 2 1 10 Save Configuration Info Configuration Manager gt Platform gt DCM 11 0 and later gt Global gt Base Module DCM or Expansion Module DCM Save Save No Save Specifies whether
37. are DCMMW ecu m 1 11 PMNON ADR SOWAS dee n aepo dea da drag da era men abi FU Hb d creer tr 1 11 RMON Network Management Software sse 1 12 erg caa t 1 12 rro P 1 15 Optivity Analysis for Windows NT reer errr eer rer ree inen Reed 1 16 300018 A Rev 00 V Chapter 2 Starting RMON and RMON2 on AN ANH and ARN Routers Router Hardware and Software Prerequisites esssssseseeenes 2 2 Star RMON and RMON Lione dont epo px ean pot a Pag aod 2 4 Preparing a Configuration File T T ere ere Tm 2 4 Configuring an Ethernet DCM for AN ANH Moutere 2 5 Configuring an Ethernet DCM for ARN Routers sssssseseeneeeeeennens 2 6 Enabling the Ethernet DCM ete E renee m PEA seth P N 2 7 Enabling the Ethernet DCM for AN ANH QC MI aia S 2 7 Enabling the Ethernet DCM for ARN Routers esses 2 8 Customizing the Ethgmeot DOM 2n pont Feet caste bee aa emt dea eranc s UR 2 8 Chapter 3 Configuring Mini RMON on an ARN 100 Router Configuration Considerations Bir da pid teras re re car er red T 3 2 Preparing a Configuration File gast punt E eio cma dde EP BUCO Caton E nd EB Feed d 3 3 Enabling Miri RON Data Gola accuses dont sete state rte opener EE ker tn ue Ene eese 3 3 Disabling Mipis MON Data Collecion i carr
38. are described 1 11 displaying current version C 1 upgrading C 2 DCM boot image setting the save mode 4 6 upgrading using Site Manager C 3 using the Technician Interface C 5 using local or router 4 5 dcmload command C 7 DCMMW DCM middleware customizing parameters 4 1 deleting 4 12 disabling 4 2 enabling AN ANH 2 7 ARN 2 8 reenabling 4 11 E Enable Disable parameter A 2 Ethernet DCM parameters A 1 event group RMON described B 5 memory requirements B 16 Index 1 F filter group RMON described B 3 memory requirements B 15 H hardware requirements AN ANH 2 2 ARN 2 3 history group RMON described B 2 memory requirements B 12 host group RMON described B 3 enabling host configuration 4 8 memory requirements B 13 HostTopN group R MON described B 3 memory requirements B 14 Image Name parameter A 3 Image Save Mode parameter A 3 interoperability issues for RMON B 11 M matrix group RMON described B 3 enabling matrix configuration 4 9 memory requirements B 14 memory use for RMON B 11 mini RMON 3 1 N network layer host group RMON2 B 9 network layer matrix group RMON2 B 9 O Optivity Analysis for UNIX 1 12 Index 2 Optivity Analysis for Windows NT 1 16 Optivity LAN 1 15 P protocol directory group RMON2 B 7 protocol distribution group RMON2 B 8 R RFC 1757 1 1 RFC 2021 1 11 RMON control parameters B 2 control tables B 2
39. d 3 to 5 KB of memory for the filter and capture configuration The size of the capture buffer determines the amount of memory you need for the data You can request the largest buffer size available by specifying a buffer size of through your RMON network management application When you specify 1 for the capture buffer size the agent attempts to allocate a default buffer depending on the DRAM in the Ethernet DCM Table B 3 Table B 3 Default Size for Capture Buffer Installed DRAM MB Default Buffer Size KB 4 64 8 256 16 512 You can also request a larger buffer size up to 15 MB In any case if there is not enough memory currently available to satisfy the request the agent will provide a buffer that uses all available memory You can determine the maximum number of packets that an agent can capture in a buffer as follows buffer size packet slice size 20 bytes 300018 A Rev 00 B 15 Configuring RMON and RMON2 Example You specify a buffer size of 32 KB and a packet slice size of 1 KB After checking the available memory the RMON agent allocates the buffer size you requested The buffer can hold a maximum of 32 768 1024 20 or 31 packets Note The RMON agent allocates the full amount of memory you specify for the packet slice size to each packet even if the packet size is smaller than this amount For this reason Bay Networks recommends that you set the packet slice size to the s
40. d Wide Web at support baynetworks com xvi 300018 A Rev 00 How to Get Help About This Guide If you purchased a service contract for your Bay Networks product from a distributor or authorized reseller contact the technical support staff for that distributor or reseller for assistance If you purchased a Bay Networks service program call one of the following Bay Networks Technical Solutions Centers Technical Solutions Center Telephone number Fax number Billerica MA 800 2LANWAN 978 916 3514 Santa Clara CA 800 2LANWAN 408 495 1188 Valbonne France 33 4 92 96 69 68 33 4 92 96 69 98 Sydney Australia 61 2 9927 8800 61 2 9927 8811 Tokyo Japan 81 3 5402 0180 81 3 5402 0173 Bay Networks Educational Services Through Bay Networks Educational Services you can attend classes and purchase CDs videos and computer based training programs about Bay Networks products Training programs can take place at your site or at a Bay Networks location For more information about training programs call one of the following numbers Region Telephone number United States and Canada 800 2LANWAN then enter Express Routing Code ERC 282 when prompted 978 916 3460 direct Europe Middle East and Africa 33 4 92 96 15 83 Asia Pacific 61 2 9927 8822 Tokyo and Japan 81 3 5402 7041 300018 A Rev 00 xvii
41. e Module DCM Parameters window opens Figure C 2 Set the Enable Disable parameter to Enable and click on OK This action boots the Ethernet DCM with the new DCM software image that you specified using the Image Name parameter and saves the new DCM software image to flash memory if specified Set the Boot Option parameter to Local Choose the Local option after you save the DCM software image to the Ethernet DCM s flash to boot the Ethernet DCM from its own flash memory Click on OK Using the Technician Interface To upgrade the DCM software image in a BayStack router using the Technician Interface 1 Transfer the DCM software image for example in 2 00 0bj to a PC or UNIX workstation from e The latest BayRS CD release media e The World Wide Web URL http support baynetworks com software Router Contact the Bay Networks Technical Solutions Center if you do not have access to these sources Use FTP or TFTP to transfer the DCM image file and the Technician Interface script dcmload bat from the workstation to the flash memory card on the router 300018 A Rev 00 C 5 Configuring RMON and RMON2 Enter the following Technician Interface command to download the new software image from the router flash memory card to the DCM flash memory 1 1 dcmload The Technician Interface displays information about the dcmload script and displays the following prompt Do you want to download an image to the Base M
42. e of the University may not be used to endorse or promote products derived from such portions of the software without specific prior written permission SUCH PORTIONS OF THE SOFTWARE ARE PROVIDED AS IS AND WITHOUT ANY EXPRESS OR IMPLIED WARRANTIES INCLUDING WITHOUT LIMITATION THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE In addition the program and information contained herein are licensed only pursuant to a license agreement that contains restrictions on use and disclosure that may incorporate by reference certain limitations and notices imposed by third parties 300018 A Rev 00 Bay Networks Inc Software License Agreement NOTICE Please carefully read this license agreement before copying or using the accompanying software or installing the hardware unit with pre enabled software each of which is referred to as Software in this Agreement BY COPYING OR USING THE SOFTWARE YOU ACCEPT ALL OF THE TERMS AND CONDITIONS OF THIS LICENSE AGREEMENT THE TERMS EXPRESSED IN THIS AGREEMENT ARE THE ONLY TERMS UNDER WHICH BAY NETWORKS WILL PERMIT YOU TO USE THE SOFTWARE If you do not accept these terms and conditions return the product unused and in the original shipping container within 30 days of purchase to obtain a credit for the full purchase price 1 License Grant Bay Networks Inc Bay Networks grants the end user of the Software Licensee a personal nonexclusive nontransferable
43. e on your network management station one of these network management applications to view and analyze RMON and RMONG statistics generated by the Ethernet DCM e Optivity Enterprise contains Optivity Analysis for UNIX and Optivity LAN e Optivity Analysis for Windows NT 300018 A Rev 00 2 3 Configuring RMON and RMON2 Starting RMON and RMON2 To begin using RMON and RMON for data collection on BayStack routers you must enable the Ethernet DCM using the default configuration To start RMON and RMON2 on Ethernet DCM enabled AN ANH and ARN routers use Site Manager to perform the following tasks Prepare a configuration file Configure the Ethernet DCM Preparing a Configuration File To create a configuration file complete the following steps Site Manager Procedure You do this System responds 1 From the Site Manager main menu choose Tools The Tools menu opens Choose Configuration Manager The Configuration Manager window opens Choose Local File Remote File or Dynamic Site Manager prompts you to choose a configuration file Select the configuration file and click on OK The Configuration Manager window opens displaying the router models For information about Site Manager and how to work with configuration files see Configuring and Managing Routers with Site Manager 2 4 300018 A Rev 00 Starting RMON and RMON2 on AN ANH and ARN Routers
44. ects and analyzes Ethernet data in real time on a single LAN segment RMON on groups of LANs RMON or on an enterprise network RMON2 The DCM agent stores the data locally in the Ethernet DCM according to the RMON specification defined in RFC 1757 or the RMON2 MIB specification in compliance with RFC 2021 You can enable multiple DCM agents running on different segments of the network with a single network management station controlling and accessing them DCM Middleware DCMMW To communicate with the DCM software on the Ethernet DCM the router uses a software subsystem the DCM middleware DCMMW This software subsystem enables and configures an installed Ethernet DCM and allows you to modify the Ethernet DCM configuration boot the Ethernet DCM download the DCM image from the base module to the Ethernet DCM and disable the Ethernet DCM using Site Manager You can use an SNMP based network management application that supports RMON to view RMON and RMONG statistics RMON Agent Software The RMON agent software resides on the router s base module and supports the alarm and event groups on all Bay Networks routers The RMON agent software also supports the statistics and history groups on the ARN 100 router and communicates with the DCMMW software subsystem to access RMON and RMON data collected by the Ethernet DCM 300018 A Rev 00 1 41 Configuring RMON and RMON2 RMON Network Management Software An RMON network man
45. ed Assoc Address Click on Help or see Configuring IP Services for parameter descriptions 9 Click on OK You return to the Configuration Manager window 10 Choose Platform The Platform menu opens 11 Choose RMON Stats 12 10 and later The RMON Stats 12 10 and later menu opens 12 Choose Enable Base Module RMON The Enable Base Module RMON Stats Stats menu opens indicating that you have enabled the base module for RMON data collection 300018 A Rev 00 Configuring Mini RMON on an ARN 100 Router Disabling Mini RMON Data Collection To stop collecting mini RMON statistics on the Ethernet you must delete the RMON Stats base module on the ARN 100 router To delete the RMON Stats base module on the ARN 100 router complete the following steps You do this Site Manager Procedure System responds 1 In the Configuration Manager window choose Platform The Platform menu opens 2 Choose RMON Stats 12 10 and later 3 Choose Delete Base Module RMON Stats The RMON Stats 12 10 and Later menu opens The Configuration Manager disables data collection by deleting the base module on the ARN 100 300018 A Rev 00 3 5 Chapter 4 Customizing a DCM for RMON and RMON2 This chapter describes how to customize the configuration of an Ethernet DCM by editing the DCMMW parameters It contains the following information
46. en you enable the Ethernet DCM the RMON agent automatically creates a statistics configuration that records data for each network interface Through your RMON network management application you can create as many statistics configurations as memory permits up to the RMON limit of 65 535 configurations If you create multiple configurations it is possible to collect the same set of statistics for the same interface in multiple data tables The absolute values of those statistics may vary from table to table because the baseline of each statistics counter occurs when you create a configuration You may prefer however to use only one statistics configuration to conserve memory for other RMON groups You need 200 bytes of memory for each statistics configuration History Group When you enable the Ethernet DCM the RMON agent automatically creates a history configuration that collects history data at two intervals The first configuration provides short term history by sampling statistics every 30 seconds and holding up to 50 samples called buckets The second configuration provides long term history by sampling statistics every 30 minutes and holding up to 50 buckets Through your RMON network management application you can create as many history configurations as memory permits up to the RMON limit of 65 535 configurations You can also set the number of buckets for a particular history configuration to as many as available memory allow
47. er yes y to overwrite the existing image on the DCM Flash with the new image Answer no n to use the downloaded image once but lose it at the next boot Specify DCM image name volume filename 1 in 2 00 0bj Do you want DCM to save this image on its FLASH y n yl Y Image Name is 1 dcmboot exe Image will be saved by DCM in its FLASH Do you want to start the download process y n yl Y Downloading of DCM image has started It will take few seconds to complete 300018 A Rev 00 C 7 A address mapping group RMON2 B 9 alarm group RMON described B 4 memory requirements B 16 application layer matrix group RMON2 B 10 B Boot Option parameter A 2 C capture group RMON described B 4 memory requirements B 15 configuration files preparing for AN ANH and ARN 2 4 preparing for ARN 100 3 3 setting the save mode 4 6 using local or router 4 5 Configuration Mode parameter A 4 customer support programs xvi Technical Solutions Centers xvii customizing DCM parameters 4 1 D data collection module middleware DCMMW 1 9 DCM data collection module configuring AN ANH 2 5 ARN 2 6 customizing parameters 4 7 DCM software image C 3 300018 A Rev 00 Index deleting software subsystem 4 12 disabling 4 2 enabling AN ANH 2 7 ARN 2 8 rebooting 4 11 requirements hardware and software 2 2 saving configuration information 4 10 setting for RMON or RMON2 4 3 DCM agent softw
48. erview RMON OID Tree Root Org DoD Internet Mib 1 Os Sk 777 nlMatrix Me AB RON S om nlHost Capture Y protocolDist s RMN0002A Figure 1 2 RMON RMON2 MIB Tree 300018 A Rev 00 Configuring RMON and RMON2 RMON and RMON Support on Bay Networks Routers Table 1 3 Table 1 3 summarizes the three levels of RMON and RMON2 support that Bay Networks offers and describes how Bay Networks implements this support Summary of RMON and RMON2 Support RMON Support Router Model Configuration Tasks groups only RMON alarm and event All routers no Ethernet DCM You must enable the RMON alarm and event subagent RAESA on the router using Technician Interface commands see Using Technician Interface Software After you enable alarm and event groups on the router you can configure the Threshold Manager in Optivity LAN to set alarms on any integer based object in the MIB tree Then you can configure the Fault Correlator tool in Optivity LAN to receive traps when the threshold is exceeded Statistics History Alarm Event Mini RMON which ARN 100 includes built in RMON no Ethernet DCM capability for the following RMON MIB groups Use Site Manager to enable RMON statistics on the ARN 100 base module see Chapter 3 This action loads the RMONStat subagent which contains both the statistics and history groups It also loads the RAESA subagent which con
49. es and book titles Indicate the title of a chapter or section within a book Indicates data that appears on the screen Example Set Bay Networks Trap Monitor Filters Separates menu and option names in instructions and internal pin to pin wire connections Example Protocols gt AppleTalk identifies the AppleTalk option in the Protocols menu Xiv 300018 A Rev 00 vertical line I Acronyms ASN 1 CMIP DCM DCMMW DLCI DRAM FDDI IP LRU MAC MIB NVRAM PDU PVC RFC RIP RMON SNMP TFTP UDP WAN About This Guide Example Pin 7 gt 19 gt 20 Indicates that you enter only one of the parts of the command The vertical line separates choices Do not type the vertical line when entering the command Example If the command syntax is show at routes nets you enter either show at routes or show at nets but not both abstract syntax notation Common Management Information Protocol data collection module data collection module middleware data link control interface dynamic random access memory Fiber Distributed Data Interface Internet Protocol least recently used media access control management information base nonvolatile random access memory protocol data unit permanent virtual circuit Request for Comments Routing Information Protocol remote monitoring Simple Network Management Protocol Trivial File Transfer Protocol User Datagram Protocol wide area network 300018 A Rev 00
50. es in any form solely by reason of the termination of this license 8 Export and Re export Licensee agrees not to export directly or indirectly the Software or related technical data or information without first obtaining any required export licenses or other governmental approvals Without limiting the foregoing Licensee on behalf of itself and its subsidiaries and affiliates agrees that it will not without first obtaining all export licenses and approvals required by the U S Government 1 export re export transfer or divert any such Software or technical data or any direct product thereof to any country to which such exports or re exports are restricted or embargoed under United States export control laws and regulations or to any national or resident of such restricted or embargoed countries or ii provide the Software or related technical data or information to any military end user or for any military end use including the design development or production of any chemical nuclear or biological weapons 9 General If any provision of this Agreement is held to be invalid or unenforceable by a court of competent jurisdiction the remainder of the provisions of this Agreement shall remain in full force and effect This Agreement will be governed by the laws of the state of California Should you have any questions concerning this Agreement contact Bay Networks Inc 4401 Great America Parkway PO Box 58185 Santa Clara Californ
51. etera e LEE area pie adie 3 5 Chapter 4 Customizing a DCM for RMON and RMON2 Disabling the Etharnel DW TT 4 2 Specifying RMON or RMON Data Collection aeeseseescissesesee inen tn nnne nh nhan 4 3 Specitying the DOM Boot Image Name critt ee cec Ems itn chan rented 4 4 Saving The Boor Image PIS 2 rep ode a cr be ni o E erred ta po oO dde 4 5 Specifying the Configuration Mode porma TT Tm 4 6 Modifying Default RMON MIB Group Parameters eesssssseeeeneeeennn 4 7 Specifying the Maximum Number of RMON Hosts cseccceeeeeeececteeeeeeseeeeaes 4 7 Enabling and Disabling the RMON Host Control Table re anua 4 8 Enabling and Disabling the RMON Matrix Control Table seese 4 9 Saving the Configuration Information esessssssssseseeeeeeneeen nennen 4 10 RMebooting Me Elhemet DOM e 4 11 Deleting the Ethernet DCM Software Subsystem esssseseeessss A12 Using the Technician Interface to Manage a DCM bsec pud A T 4 13 vi 300018 A Rev 00 Appendix A Ethernet DCM Parameters Appendix B RMON and RMON2 MIB Groups Feta Ee e e osea cootra Fu ah cud E E E A afin e ET cd B 1 AMON MIB Group Controle and FUNCIONS uiui receipt inpet nete eedem B 2 SAMS UES GOUD ee ETT B 2 Fs EOD corso reer meencre ere eot et bre Peer Dun cere cnet rrr eereeencrenr E beim GR ERR B 2
52. gment attached to the router s Ethernet expansion module You cannot collect RMON statistics from both the base module and the Ethernet DCM full RMON RMON2 This restriction is enforced in the following way for ARN 100 routers e If you enable the DCMMW subsystem on an ARN 100 router and then configure mini RMON on the ARN 100 base module the DCMMW subsystem is disabled DCMMW is unloaded and its load mask is cleared e If you enable mini RMON on the base module and you then configure the DCMMYW subsystem mini RMON is disabled Mini RMON is unloaded and its load mask is cleared For information about installing an Ethernet DCM on an Ethernet expansion module in an ARN router see nstalling an Ethernet RMON DCM in a BayStack ARN Router For information about starting RMON and RMON on an ARN 100 router with an installed Ethernet DCM see Chapter 2 Starting RMON and RMON 2 on AN ANH and ARN Routers Starting Mini RMON To start RMON data collection on an ARN 100 base module use Site Manager to perform the following tasks Prepare a configuration file Enable the base module and RMON data collection 3 2 300018 A Rev 00 Configuring Mini RMON on an ARN 100 Router Preparing a Configuration File To create a configuration file complete the following steps Site Manager Procedure You do this System responds 1 From the Site Manager main window The Tools menu opens choose Tools 2 Choose Confi
53. guration Manager The Configuration Manager window opens 3 Choose Local File Remote File or Site Manager prompts you to choose a Dynamic configuration file 4 Select the configuration file and click on The Configuration Manager window OK opens displaying the router models For information about Site Manager and how to work with configuration files see Configuring and Managing Routers with Site Manager Enabling Mini RMON Data Collection To begin collecting mini RMON statistics on the ARN 100 base module you enable the base module and then enable RMON by completing the following steps Site Manager Procedure You do this System responds 1 In the Configuration Manager window choose the ARN router model 2 Click on Confirm 3 Choose the 10 100BASE TX Ethernet or the 100BASE FX Ethernet net or link module for the ARN 100 router 4 Click on OK continued 300018 A Rev 00 3 3 Configuring RMON and RMON2 Site Manager Procedure continued You do this 5 Choose the link or net module connector on which you are enabling mini RMON for example XTRCV System responds The Add Circuit window opens Accept the default circuit name or modify it then click on OK The Select Protocols window opens 7 Choose IP and RIP then click on OK 8 Setthe following parameters IP Address Subnet Mask Transmit Bcast Addr UnNumber
54. he DCM 11 0 and Later menu opens 3 Choose Global The Global menu opens 4 Choose Base Module DCM or Expansion Module DCM The Edit Base Module DCM Parameters window or the Edit Expansion Module DCM Parameters window opens 5 Setthe Enable Disable parameter to Enable Click on Help or see the parameter description on page A 2 6 Click on OK You return to the Configuration Manager window 300018 A Rev 00 Configuring RMON and RMON2 Deleting the Ethernet DCM Software Subsystem The router requires the DCMMW software to communicate with the Ethernet DCM Deleting DCMMW deactivates the Ethernet DCM Note Before you delete the DCMMW always try disabling the Ethernet DCM by setting the Enable Disable parameter to Disable To deactivate the Ethernet DCM complete the following steps Site Manager Procedure You do this System responds 1 In the Configuration Manager window choose Platform 2 Choose DCM 11 0 and later The Platform menu opens The DCM 11 0 and later menu opens 3 Choose Delete DCM The Delete DCM menu opens 4 Choose one of the following options Base Module DCM only Expansion Module DCM only All DCMs Base Module DCM only removes the DCMMW from the base module on the current platform Expansion Module DCM only removes the DCMMW from the ARN Ethernet expansion module All DCMs removes the DCMMW from all modules on
55. he RMON2 MIB groups see Appendix B RMON and RMON2 MIB Groups Table 1 2 RMON MIB Groups Group Lets You Protocol Directory Compile a master directory of all protocols that the Ethernet DCM can interpret Protocol Distribution Aggregate statistics on the amount of traffic generated by each protocol per LAN segment or for each layer in the protocol stack Address Mapping Connect port numbers MAC addresses and network addresses Network Layer Host Obtain statistics on the traffic of specific hosts in out packets octets and so forth based on the network layer address continued 300018 A Rev 00 1 5 Configuring RMON and RMON2 Table 1 2 RMON 2 MIB Groups continued Group Lets You Application Layer Host Obtain statistics on the traffic of specific hosts in out packets octets and so forth based on the network layer address Network Layer Matrix Obtain statistics on the traffic between pairs of hosts in out packets octets and so forth based on the network layer address Application Layer Matrix Obtain statistics on the traffic between pairs of hosts in out packets octets and so forth based on the application layer address For more information about RMON2 MIB groups see Appendix B RMON and RMON2 MIB Groups Figure 1 2 illustrates the RMON RMON2 MIB tree showing RMON and RMON2 MIB groups 1 6 300018 A Rev 00 RMON and RMON Ov
56. ia 95054 8185 LICENSEE ACKNOWLEDGES THAT LICENSEE HAS READ THIS AGREEMENT UNDERSTANDS IT AND AGREES TO BE BOUND BY ITS TERMS AND CONDITIONS LICENSEE FURTHER AGREES THAT THIS AGREEMENT IS THE ENTIRE AND EXCLUSIVE AGREEMENT BETWEEN BAY NETWORKS AND LICENSEE WHICH SUPERSEDES ALL PRIOR ORAL AND WRITTEN AGREEMENTS AND COMMUNICATIONS BETWEEN THE PARTIES PERTAINING TO THE SUBJECT MATTER OF THIS AGREEMENT NO DIFFERENT OR ADDITIONAL TERMS WILL BE ENFORCEABLE AGAINST BAY NETWORKS UNLESS BAY NETWORKS GIVES ITS EXPRESS WRITTEN CONSENT INCLUDING AN EXPRESS WAIVER OF THE TERMS OF THIS AGREEMENT iv 300018 A Rev 00 Contents About This Guide Bia else LEM EtS ry MEN NET ETT CET OTT T T xiv ROIS CNAs accra 1 0 tx iavoarsamaidetotasaiousnmaidnetanneieratiewiaen xiv PE PONS uoa datas i pbebbcp da qb HO RED Ue bribl dc popa annie pta lu On epoca E en a d a AR XV Bay Networks Technical PUBNGAUGIS 1sisaeec riesce akuten tana cua dedu da Rc REA p ra xvi Bae Networks Customer Serie usciti oiea ag dete ee Me read NE eta REESE xvi x eet A e EN xvii Bay Networks Educational Services sess eet d nee xvii Chapter 1 RMON and RMON Overview PROCU EID dud eio kdo bak ro pacer eon os n belU lob duca E P E E 1 1 ROHN EAD eee e T E 1 3 RMON and RMON Support on Bay Networks Routers sssssseee 1 8 RMON and ROME Architecture cia cc side cus boc upbeat e 1 9 Data Collection Module DOMP UR 1 11 DOM cour eT C 1 11 DOM Middlew
57. ion Manager gt Platform gt DCM 11 0 and later gt Global gt Base Module DCM or Expansion Module DCM Local Local Download Specifies whether the DCM uses the image file in its own flash memory for booting or a boot image copied from the BayStack router s flash memory card to DCM shared memory Select Local to specify the image file in DCM local flash memory as the DCM boot image Select Download to specify an image file on the BayStack router s flash memory as the DCM boot image You specify the downloaded image using the Image Name parameter 1 3 6 1 4 1 18 3 3 2 16 2 1 8 A 2 300018 A Rev 00 Parameter Path Default Options Function Instructions MIB Object ID Parameter Path Default Options Function Instructions MIB Object ID Ethernet DCM Parameters Image Name Configuration Manager gt Platform gt DCM 11 0 and later gt Global gt Base Module DCM or Expansion Module DCM None but you must specify an image name when the Boot Option parameter is set to Download An ASCII text string up to 255 characters Specifies an image file on the BayStack router s flash memory card The image name must be a fully qualified file name including both the volume and file name Enter the volume and file name of the image that you want the DCM to boot using the format volume number filename for example 1 dcm image 1 3 6 1 4 1 18 3 3 2 16 2 1 7 Image Save Mode Configuration M
58. it Expansion Module DCM Parameters window opens Set the RMON Object Support parameter Click on Help or see the parameter description on page A 6 Click on OK You return to the Configuration Manager window 300018 A Rev 00 4 3 Configuring RMON and RMON2 Specifying the DCM Boot Image Name By default the DCM uses the image file in its local flash memory as the DCM boot image If you want the DCM to use an image file on the BayStack router s flash memory as the DCM boot image you must e Set the Boot Option parameter to Download When the DCM boots in Download mode the DCMMW software moves a copy of the router s image to DCM shared memory e Specify the image to download with the Image Name parameter The boot image name cannot exceed 255 characters To specify the DCM boot image enter the router volume and file name for the image you want the DCM to boot using the following format volume number filename For example 1 dcm image If you want the DCM to use the image file in DCM local flash memory as the DCM boot image remember to reset the Boot Option parameter to Local To specify the DCM boot image name complete the following steps Site Manager Procedure You do this System responds 1 In the Configuration Manager window The Platform menu opens choose Platform 2 Choose DCM 11 0 and later The DCM 11 0 and later menu opens 3 Choose Global The Global
59. ity Analysis for Windows NT to view and analyze RMON and RMONG statistics Customizing the Ethernet DCM For information about customizing the DCMMW configuration parameters see Chapter 4 Customizing a DCM for RMON and RMON2 2 8 300018 A Rev 00 Chapter 3 Configuring Mini RMON on an ARN 100 Router On the ARN 100 router Bay Networks provides a condensed version of the RMON MIB standard called mini RMON Mini RMON supports the following four RMON MIB groups e Statistics History e Alarm e Event Unlike the AN ANH and ARN routers which use an installed Ethernet DCM to collect RMON statistics the ARN 100 router contains built in RMON capability on the router s base module Using Site Manager to configure the ARN 100 base module you can enable the ARN 100 to collect RMON statistics After you configure the ARN 100 router to collect RMON statistics you can view these statistics using the RMON tools in Optivity Analysis for UNIX or Optivity Analysis for Windows NT For information about using these RMON tools see RMON Network Management Software on page 1 12 300018 A Rev 00 3 1 Configuring RMON and RMON2 Configuration Considerations If you choose you can upgrade an ARN 100 router to collect complete RMON and RMONG statistics by installing an Ethernet expansion module on the router s base module and attaching the Ethernet DCM to it You can collect full RMON RMONG statistics only from the se
60. ivilian agencies and subparagraph c 1 ii of the Rights in Technical Data and Computer Software clause of DFARS 252 227 7013 for agencies of the Department of Defense or their successors whichever is applicable 6 Use of Software in the European Community This provision applies to all Software acquired for use within the European Community If Licensee uses the Software within a country in the European Community the Software Directive enacted by the Council of European Communities Directive dated 14 May 1991 will apply to the examination of the Software to facilitate interoperability Licensee agrees to notify Bay Networks of any such intended examination of the Software and may procure support and assistance from Bay Networks 7 Term and termination This license is effective until terminated however all of the restrictions with respect to Bay Networks copyright in the Software and user manuals will cease being effective at the date of expiration of the Bay Networks copyright those restrictions relating to use and disclosure of Bay Networks confidential information shall continue in effect Licensee may terminate this license at any time The license will automatically terminate if Licensee fails to comply with any of the terms and conditions of the license Upon termination for any reason Licensee will immediately destroy or return to Bay Networks the Software user manuals and all copies Bay Networks is not liable to Licensee for damag
61. mallest size possible The maximum packet size is 2 KB Alarm and Event Groups When you enable the Ethernet DCM the router does not create default alarm or event entries Bay Networks recommends that you create alarm and event entries using a network management application such as Optivity Analysis for Windows NT You can create as many alarm and event entries as memory permits up to the RMON limit of 65 535 entries The memory limitation for alarm and event groups is based on the memory resources allocated on the router base module rather than on the Ethernet DCM The RMON alarm and event groups are maintained by the router base module All other RMON groups are supported on the Ethernet DCM Each alarm entry requires 232 bytes Each event entry requires 542 bytes The log table can accommodate up to 65 535 entries Each entry in the log table requires 267 bytes You cannot delete log entry rows Therefore as events are triggered and the event type specifies logging the log table increases in size Although there is no way to delete a specific log entry all log entries in the log table corresponding to a single event entry are deleted when the event entry is deleted B 16 300018 A Rev 00 Appendix C Upgrading the DCM Software Image This appendix describes how to upgrade the DCM software image on BayStack routers using Site Manager or the Technician Interface This appendix includes the following information
62. module choose Ethernet DCM Foran adapter module choose ISDN y 4 Click on OK 5 Choose a net or link module for the ARN router Choose the link or net module connector on which you are enabling the Ethernet DOM The Add Circuit window opens Accept the default circuit name or modify it then click on OK The Select Protocols window opens 8 Choose IP then click on OK The IP Configuration window opens 9 Setthe following parameters IP Address Subnet Mask Transmit Beast Addr UnNumbered Assoc Address Click on Help or see Configuring IP Services for parameter descriptions 10 Click on OK You return to the Configuration Manager window 2 6 300018 A Rev 00 Starting RMON and RMON2 on AN ANH and ARN Routers Enabling the Ethernet DCM To enable the Ethernet DCM you create the DCM middleware DCMMW configuration using the default parameter values For information about modifying the default values see Chapter 4 Customizing a DCM for RMON and RMON2 Enabling the Ethernet DCM for AN ANH Routers To enable the Ethernet DCM for an AN ANH router complete the following steps Site Manager Procedure You do this System responds 1 In the Configuration Manager window The Platform menu opens choose Platform 2 Choose DCM 11 0 and later The DCM 11 0 and later menu opens 3 Choose Create Base Module DCM The Edit Base Module
63. nts based on thresholds that you define You can use these statistics to initiate functions such as data capture or instance counts to isolate specific portions of your network 1 2 300018 A Rev 00 RMON and RMON Overview RMON MIB RMONG is a standard MIB that extends the scope of the RMON MIB beyond the MAC layer to provide statistics on network and application layer traffic layers 3 through 7 of the OSI model By monitoring higher layer protocols you can get an internetwork or enterprise wide view of network traffic enabling you to e Identify which systems are communicating with which servers and what applications they are using Identify which devices are sending and receiving which types of traffic Using this knowledge of traffic patterns you can strategically place users and resources in the correct location on the network to optimize performance and reduce costs Figure 1 1 shows the level of visibility that RMON and RMON2 provide within a LAN segment and within a network at each layer of the OSI model 300018 A Rev 00 Configuring RMON and RMON2 RMON2 Application layer LJ Lotus Notes Layer 4 7 RMON2 Network layer RMON MAC layer Hub Physical layer Key C1 client 1
64. odule DCM If you choose Base Module DCM the Edit Base Module DCM Parameters window opens If you choose Expansion Module DCM for an ARN router the Edit Expansion Module DCM Parameters window opens 5 Setthe Enable Disable parameter to Disable Click on Help or see the parameter description on A 2 6 Click on OK You return to the Configuration Manager window 300018 A Rev 00 Customizing a DCM for RMON and RMON2 Specifying RMON or RMON2 Data Collection When you enable the Ethernet DCM using default values the DCM collects RMONG statistics from the AN ANH or ARN router Although the ARN 100 router supports multiple Ethernet DCMs it cannot collect RMON2 statistics from more than one Ethernet DCM simultaneously To specify the Ethernet DCM from which you want to collect RMON2 statistics set the RMON Object Support parameter to RMON for that Ethernet DCM any additional Ethernet DCMs automatically default to RMON To specify the Ethernet DCM from which you want to collect RMON2 statistics complete the following steps Site Manager Procedure You do this 1 In the Configuration Manager window choose Platform System responds The Platform menu opens Choose DCM 11 0 and later The DCM 11 0 and later menu opens 3 Choose Global The Global menu opens 4 Choose Base Module DCM or Expansion Module DCM The Edit Base Module DCM Parameters window or the Ed
65. odule DCM or the Expansion Module DCM b e b If the DCM is installed on the base module press Return If the DCM is installed on an ARN expansion module enter e The Technician Interface displays the following prompt Specify DCM image name volume filename Enter the image name in the form volume filename volume is 1 and filename is the name you gave the DCM image during the file transfer For example enter 1 in 2 00 0bj or 1 dcm200image The Technician Interface displays the following prompt Do you want DCM to save this image on its FLASH y n y Answer yes by pressing Return If you answer no the DCM uses the downloaded image only once reverting to the previous image at the next boot The Technician Interface displays the following prompt Do you want to start the download process y n y Answer yes to begin downloading the new image overwriting the existing DCM software image The downloading process takes less than 1 minute Verify that the DCM software image is now Version 2 00 See step 3 in the previous section Verifying Minimum DCM Requirements on page C 2 C 6 300018 A Rev 00 Upgrading the DCM Software Image Sample Display dcmload bat Use this script to download a DCM image from the router s Flash to a DCM board When prompted for the image file name use the form volume filename When prompted whether to save the image on the DCM Flash answ
66. of the network RFC 2021 defines the function and organization of the RMON2 MIB groups Bay Networks implements the following seven groups in its RMON2 agent for BayStack AN ANH and ARN routers e Protocol Directory e Protocol Distribution e Address Mapping e Network Layer Host e Application Layer Host B 6 300018 A Rev 00 RMON and RMON2 MIB Groups e Network Layer Matrix e Application Layer Matrix Protocol Directory Group The Protocol Directory group lists the protocols that the Ethernet DCM can monitor These protocols represent different network layer transport layer and higher layer protocols Figure B 1 shows the statistics collected for the Protocol Directory group using the Threshold Manager tool in the Optivity Analysis application Figure B 1 Protocol Directory Statistics 300018 A Rev 00 B 7 Configuring RMON and RMON2 Protocol Distribution Group The Protocol Distribution group collects the relative numbers of octets and packets for the different protocols detected on a network segment An RMON application can use this table to quickly determine bandwidth allocation used by different protocols An entry is made in the table for every protocol in the Protocol Directory table that has been seen in at least one packet Counters are updated in this table for every protocol type that is encountered when parsing a packet but no counters are updated for packets with MAC layer errors Figure B 2 sho
67. ontinued 300018 A Rev 00 RMON and RMON Overview Table 1 4 Optivity Analysis for UNIX RMON Based Tools continued RMON Tool Name Purpose Possible Uses Special Features MIB Group Network Layer View conversation pairs Analyze traffic flow to Shows statistics on Network Matrix RMON2 across router boundaries predict bottlenecks and plan for growth traffic between pairs of hosts in out packets octets and So forth Layer Matrix the relationship between end stations including relative traffic volumes and the primary network layer protocol used conversations that require attention View statistics for specific hosts and conversations Start other RMON tools directly from TrafficMan map map on a variety of features including upper layer protocols such as FTP and HTTP Learning Tool Automatically learn Create normative model Learns automatically Ancillary to normal network comprising threshold Alarm and behavior on all values for all segments Flexible sample Event segments Builds model statistically TrafficMan Graphically represents Identify hosts or Filters TrafficMan N A For detailed information about how to install configure and customize the RMON based tools for use with RMON and RMONO see Using Optivity Analysis 8 0 Optivity LAN Optivity LAN offers two tools you can use to monitor network statistics collected by the RMON agen
68. ort sse 1 8 Table 1 4 Optivity Analysis for UNIX RMON Based Tools susssss 1218 Table 2 1 AN ANH Requirements for Using RMON and RMON2 Tm 2 2 Table 2 2 ARN Requirements for Using RMON and RMONe osen 2 3 Table B 1 DRAM and RMON Memory Size seessissseseeeeeennne en tnnnnnn B 11 Table B 2 Maximum MN lfiber oT HORIS 1st terr dart cevaccotecscavanentvevacceescesvacees B 13 Table B 3 Default Size for Capture Buffer sssssseee B 15 300018 A Rev 00 xi About This Guide If you are responsible for configuring and managing an Ethernet remote monitoring RMON data collection module DCM in a Bay Networks BayStack router you need to read this guide The BayStack family of routers includes the following platforms e Access Node AN e Access Node Hub ANH e Advanced Remote Node ARN ARN 100 If you want to Go to Learn about RMON and RMON concepts and terminology and the Chapter 1 Bay Networks implementation of RMON and RMON2 Start RMON and RMON on an AN ANH or ARN router Chapter 2 Configure the ARN 100 router to collect statistics for four RMON Chapter 3 groups mini RMON Customize the DCM configuration by editing DCMMW parameters Chapter 4 Obtain information about Ethernet DCM parameters this is the same Appendix A information you obtain using Site Manager online Help
69. ort for conversations by protocol continued 300018 A Rev 00 1 13 Configuring RMON and RMON2 Table 1 4 Optivity Analysis for UNIX RMON Based Tools continued RMON Tool Name Purpose Possible Uses Special Features MIB Group Filter Capture Define channels and Capture packets for Flexible channel and Filter and filters analysis of a specific filter editors Capture problem or to provide Activate channels for selective traffic statistics Real time display of captures counters Automatic capture activation from other tools DecodeMan Decode and display Troubleshoot problems by Full seven layer Filter and captured packet content pinpointing the source decode Capture Quick search index Quick configuration of RMON probes for standalone operation Alarm Editor View thresholds for Modify individual Editing of individual Ancillary to segment normative models thresholds and Alarm and hysteresis values Event Run Learning Tool Run Learning Tool with interactively locally local configuration for specific segment Alarm Monitor Continually monitor all Proactive maintenance Monitors all Alarm and segments segments at once Event Quick filter by segment or alarm type Linkto Filter Capture and DecodeMan Protocol Provide breakdown by Analyze protocols and N A Protocol Distribution protocol type applications contributing to Distribution RMON2 the overall traffic levels on the network c
70. ory Site Manager lets you change the default values for the following parameters e RMON Max Host e RMON Default Host e RMON Default Matrix Go to the sections that follow to set these RMON MIB group parameters Specifying the Maximum Number of RMON Hosts You can specify the maximum number of host addresses to be collected in each RMON host control table The maximum limit depends on the amount of flash memory available in the DCM When the host control table reaches the maximum value the DCM deletes entries based on an LRU least recently used algorithm To verify the number of hosts configured check the MIB object wfDCMmsRMONHost using the Site Manager Statistics tool To specify the maximum number of RMON hosts complete the following steps Site Manager Procedure You do this System responds 1 In the Configuration Manager window The Platform menu opens choose Platform 2 Choose DCM 11 0 and later The DCM 11 0 and later menu opens 3 Choose Global The Global menu opens 4 Choose Base Module DCM or The Edit Base Module DCM Parameters Expansion Module DCM window opens or the Edit Expansion Module DCM Parameters window opens 5 Setthe Configuration Mode parameter to Shared Memory Click on Help or see the parameter description on A 4 continued 300018 A Rev 00 4 7 Configuring RMON and RMON2 Site Manager Procedure continued You do this System responds 6 Set the
71. ou to set up automatic histories which the RMON agent collects over a period of time providing trending data on such basic statistics as utilization collisions and so forth Using a network management application such as Optivity LAN or Optivity Analysis you can retrieve histories to understand network usage patterns Because RMON automates this data collection and provides better data to the planning process the process is easier and the outcome more accurate Bay Networks implements seven RMON MIB groups in its RMON agent and the Alarm and Event groups in its base module for BayStack AN ANH and ARN routers Table 1 1 summarizes the RMON MIB groups For detailed information about the RMON MIB groups see Appendix B RMON and RMON2 MIB Groups Table 1 1 RMON MIB Groups Group Lets You Statistics Analyze the operational effectiveness of your network Statistics include packets octets broadcasts multicasts dropped packets soft errors and packet size distribution History Analyze traffic trends based on historical data Host Collect information for each host on the segment HostTopN Reduce network overhead by looking at the most active nodes Matrix Report on traffic and errors between any host pair Filter Define criteria for capturing specific information Capture Copy packets for analysis Alarm Report on changes in network characteristics based on thresholds for any MIB variable of interest Event Log eve
72. r transfer the Software or user manuals in whole or in part The Software and user manuals embody Bay Networks and its licensors confidential and proprietary intellectual property Licensee shall not sublicense assign or otherwise disclose to any third party the Software or any information about the operation design performance or implementation of the Software and user manuals that is confidential to Bay Networks and its licensors however Licensee may grant permission to its consultants subcontractors and agents to use the Software at Licensee s facility provided they have agreed to use the Software only in accordance with the terms of this license 3 Limited warranty Bay Networks warrants each item of Software as delivered by Bay Networks and properly installed and operated on Bay Networks hardware or other equipment it is originally licensed for to function substantially as described in its accompanying user manual during its warranty period which begins on the date Software is first shipped to Licensee If any item of Software fails to so function during its warranty period as the sole remedy Bay Networks will at its discretion provide a suitable fix patch or workaround for the problem that may be included in a future Software release Bay Networks further warrants to Licensee that the media on which the Software is provided will be free from defects in materials and workmanship under normal use for a period of 90 days from the date
73. respective owners Restricted Rights Legend Use duplication or disclosure by the United States Government is subject to restrictions as set forth in subparagraph c 1 ii of the Rights in Technical Data and Computer Software clause at DFARS 252 227 7013 Notwithstanding any other license agreement that may pertain to or accompany the delivery of this computer software the rights of the United States Government regarding its use reproduction and disclosure are as set forth in the Commercial Computer Software Restricted Rights clause at FAR 52 227 19 Statement of Conditions In the interest of improving internal design operational function and or reliability Bay Networks Inc reserves the right to make changes to the products described in this document without notice Bay Networks Inc does not assume any liability that may occur due to the use or application of the product s or circuit layout s described herein Portions of the code in this software product may be Copyright 1988 Regents of the University of California All rights reserved Redistribution and use in source and binary forms of such portions are permitted provided that the above copyright notice and this paragraph are duplicated in all such forms and that any documentation advertising materials and other materials related to such distribution and use acknowledge that such portions of the software were developed by the University of California Berkeley The nam
74. s If you request more buckets than memory allows the agent allocates enough buckets to fill available memory You need 504 bytes of memory for each history configuration 252 bytes each for the short term and long term history configurations The history data requires 52 bytes of memory per bucket You calculate the total memory in bytes you need to store the data as follows number of buckets 52 2 history configurations This calculation shows that you need approximately 5 1 KB for the default setting of 50 buckets 300018 A Rev 00 RMON and RMON2 MIB Groups Host Group When you enable the Ethernet DCM the default setting for the RMON Default Host parameter is Disable meaning that no host configuration is created To create a host configuration set the RMON Default Host parameter to Enable see Modifying Default RMON MIB Group Parameters on page 4 7 Some RMON network management applications expect the Ethernet DCM to set up a host configuration but others set up their own configurations Note The RMON agent allows you to create only one host configuration Make sure to set the RMON Default Host parameter according to the expectations of the RMON network management application The host configuration requires 148 bytes The host data requires 105 bytes of memory per host address that the Ethernet DCM detects on a segment You specify the maximum number of host addresses that appear in the host configura
75. s for the Ethernet DCM to support RMON and RMON2 For each parameter this appendix provides the following information Parameter name Configuration Manager menu path Default setting Valid parameter options Parameter function Instructions for setting the parameter Management information base MIB object ID The Technician Interface allows you to modify parameters by issuing set and commit commands with the MIB object ID This process is equivalent to modifying parameters using Site Manager For more information about using the Technician Interface to access the MIB refer to Using Technician Interface Software Caution The Technician Interface does not verify the validity of your parameter values Entering an invalid value can corrupt your configuration 300018 A Rev 00 A 1 Configuring RMON and RMON2 Parameter Path Default Options Function Instructions MIB Object ID Parameter Path Default Options Function Instructions MIB Object ID Enable Disable Configuration Manager gt Platform gt DCM 11 0 and later gt Global gt Base Module DCM or Expansion Module DCM Enable Enable Disable Enables or disables DCMMW the DCM software subsystem and therefore the DCM To disable the DCM select Disable To reenable the DCM select Enable Use this parameter to reboot the DCM by disabling then reenabling DCMMW 1 3 6 1 4 1 18 3 3 2 16 2 1 3 Boot Option Configurat
76. t Threshold Manager and Fault Correlator These tools allow you to set thresholds on integer based objects and display trap information when a threshold is exceeded Threshold Manager After you establish a level of performance that you consider normal for your network you can configure your system to generate responses whenever your network performance becomes abnormal 300018 A Rev 00 Configuring RMON and RMON2 You can also set thresholds that initiate alarms whenever specified network conditions occur Whenever a threshold is met or exceeded the specified event occurs and the alarm is triggered You can set thresholds specific to a slot or port For detailed information about installing the Threshold Manager tool see Using Optivity LAN 7 1 Fault Correlator After you set alarm thresholds on integer based variables using the Threshold Manager you can use the Fault Correlator tool to decode the traps that are sent to the RMON network management station The Fault Correlator generates fault reports and calculates the current state of network objects and devices Optivity LAN automatically stores this information in the Optivity fault database For detailed information about using the Fault Correlator tool see Using Optivity LAN 7 1 Optivity Analysis for Windows NT Optivity Analysis for Windows NT monitors the performance of heterogeneous LANs to help you identify and solve network problems quickly before they lead to
77. tain exactly the type of information you need 1 12 300018 A Rev 00 RMON and RMON Overview In Optivity Analysis the RMON tools provide methods for collecting data for all RMON and RMON2 MIB groups Table 1 4 summarizes the RMON based tools and lists the corresponding RMON MIB groups that they use to collect and display traffic statistics Table 1 4 Optivity Analysis for UNIX RMON Based Tools RMON Tool Name Purpose Possible Uses Special Features MIB Group Segment Display and record Plan bandwidth intensive Ability to view Statistics Statistics information from the tasks multiple sessions RMON statistics group This information Baseline individual Automatic utilization includes raw packet segment traffic calculation based on counts and bandwidth characteristics available bandwidth utilization History collection Host Statistics Display traffic Determine which hosts are Filter for viewing Host Table summaries for each host generating specific types TopN hosts and on a selected segment of traffic HostTopN Link packet capture Provide a HostTopN filter that allows you to concentrate on only the most active hosts on the network Host Matrix Present statistics on Isolate sources of Sparse matrix Matrix conversations between broadcasts errors and so display host pairs on a selected forth segment Quick view of Locate workgroups for graphic coding of segmentation information Level 3 supp
78. tains the alarm and event groups Use Optivity Analysis RMON tools see Table 1 4 to configure retrieve and view these RMON statistics Complete support for all nine RMON groups and ARN with for seven RMON groups Ethernet DCM AN ANH and ARN 100 with Ethernet expansion module and Ethernet DCM Using Site Manager you must enable the Ethernet DCM see Chapter 2 This action enables the following subagents on the router Ethernet DCM DCMMW RAESA e Use RMON tools in Optivity Analysis for Windows NT to configure retrieve and view RMON and RMONe statistics For more information about configuring DCM enabled RMON see Chapter 2 Starting RMON and RMON2 on AN ANH and ARN Routers For information about configuring mini RMON on an ARN 100 router see Chapter 3 Configuring Mini RMON on an ARN 100 Router 1 8 300018 A Rev 00 RMON and RMON Overview RMON and RMON Architecture The Bay Networks RMON and RMON architecture consists of the following components e AN ANH and ARN base modules and ARN Ethernet expansion modules which reside on the router Ethernet data collection module DCM which physically attaches to the router s base module and contains its own flash memory module e DCM agent software which operates on the Ethernet DCM e Data collection module middleware DCMMW which operates on the router s base module e RMON agent software which operates on the
79. the current platform Site Manager displays a confirmation prompt 5 Click on OK Site Manager completely deactivates all Ethernet DCMs If you need to reactivate the Ethernet DCM after deleting the DCMMW see Enabling the Ethernet DCM on page 2 7 300018 A Rev 00 Using the Customizing a DCM for RMON and RMON2 Technician Interface to Manage a DCM You can use Technician Interface commands to Download a new Ethernet DCM software image See Appendix C Upgrading the DCM Software Image Display or modify DCMMW configuration parameters See Using Technician Interface Software for information about accessing the DCM MIB using set get and commit commands with the MIB object ID Caution The Technician Interface does not verify that the value you enter for a parameter is valid Entering an invalid value can corrupt your configuration e Enable disable and reboot the Ethernet DCM See Using Technician Interface Software for information about using the enable disable dcmmw scripts Caution Avoid running scripts that continually issue Technician Interface commands while you are running another RMON network management application This combination can cause the SNMP agent to fill the system buffers with RMON data causing a system restart 300018 A Rev 00 4 13 Appendix A Ethernet DCM Parameters This appendix contains reference information about customizing the parameter
80. tion Parameters 300018 A Rev 00 C 3 Configuring RMON and RMON2 The Edit Base Module DCM Parameters window opens Figure C 2 _ ___rrrrrrrrrrrrrrrrr Cancel 6 Values Help Enable Disable ENABLE Boot Option LOCAL Image Name Image Save Mode Configuration Mode EHARED MEMORY Save Configuration Info SAVE RMON Max Host 500 RMON Default Host DISABLE RMON Default Matrix DISABLE RMON Object Support RMON2 Figure C 2 Edit Base Module DCM Parameters Window 4 Set the Enable Disable parameter to Disable 5 Change the Boot Option from Local to Download This setting specifies that you want the Ethernet DCM to boot the downloaded DCM image from the router s shared memory instead of from the Ethernet DCM s flash memory 6 In the Image Name field specify the target volume and the file name of the new DCM software image in_2 00 0bj on the router for example 1 in 2 00 0bj 7 Setthe Image Save Mode parameter to Save and click on OK You return to the Configuration Manager window C4 300018 A Rev 00 10 11 Upgrading the DCM Software Image If you set the Image Save Mode parameter to No Save the Ethernet DCM boots with the new software image but does not save the image to the Ethernet DCM s flash memory In the Configuration Manager window Figure C 1 choose Platform DCM 11 0 and later Global Base Module DCM or Expansion Module DCM The Edit Bas
81. tion by setting the RMON Max Host parameter If there is not enough memory for the number of hosts you request the RMON agent sets the RMON Max Host parameter to the highest possible value The number of addresses can range from 100 to 8 128 hosts depending on the Ethernet DCM memory configuration Table B 2 shows recommended values for this parameter Table B 2 Maximum Number of Hosts Installed DRAM MB Maximum Hosts 2 4 2 048 5 8 4 096 9 16 8 128 You calculate the total memory in bytes you need for the host data as follows 105 value of the RMON Max Host parameter 300018 A Rev 00 B 13 Configuring RMON and RMON2 HostTopN Group To save memory and increase performance there is no default configuration for the HostTopN group You must create HostTopN configurations through your RMON network management application You can create as many HostTopN configurations as memory permits up to the RMON limit of 65 535 configurations Note Before you create a HostTopN configuration you must create a host configuration Each HostTopN configuration requires 164 bytes The HostTopN data requires 10 bytes of memory per host address that the Ethernet DCM detects on a segment You calculate the total memory in bytes you need for the HostTopN data as follows 10 value of the RMON Max Host parameter For information about setting the RMON Max Host parameter see Modifying Default RMON MIB Group
82. tions For information about setting trap destinations see Configuring SNMP BootP DHCP and RARP Services You can set up events to either record the monitoring information or to notify the network management station The event group includes an event table and a log table The event table defines the notification that takes place when an event is triggered Each entry in the event table identifies an event that can be triggered and indicates an action The event can trigger any of the following actions e The system sends an SNMP trap to the network management station e The management station is notified immediately The management station determines how to react to the SNMP trap e The system logs the event in the log table in the agent system e The system sends an SNMP trap and logs the event in the log table The log table is a read only data table for the network management station It records each event that needs to be logged including the event number an index that distinguishes occurrences of the same event the time at which the event occurred and the event description You are not required to configure the log table The management station can retrieve the information stored in the log table for further analysis For example the information collected can be used to select proper threshold values 300018 A Rev 00 B 5 Configuring RMON and RMON2 Event Trap Considerations To allow RMON to generate trap events
83. tware Prerequisites 2 2 Starting RMON and RMON2 2 4 Enabling the Ethernet DCM 2 7 Customizing the Ethernet DCM 2 8 For detailed information about RMON and RMON2 and the Bay Networks implementation of RMON and RMON2 see Chapter 1 RMON and RMON2 Overview 300018 A Rev 00 2 1 Configuring RMON and RMON2 Router Hardware and Software Prerequisites Before you can use the full RMON and RMON2 functionality on BayStack AN ANH ARN and ARN 100 routers your router must meet specific hardware and software requirements To ensure a successful implementation of RMON and RMON2 complete the following tasks 1 Install an Ethernet DCM module in each BayStack AN ANH or ARN router from which you want to collect RMON and RMONG statistics For complete installation instructions see one of the following guides Installing an N11 Data Collection Module DCM in a BayStack AN Installing an NII Data Collection Module DCM in an 8 Port ANH Installing an Ethernet RMON DCM in a BayStack ARN Router Upgrade the memory on the Ethernet DCM The minimum memory requirements are as follows e RMON 4 MB e RMON2 8 MB To determine how much memory you need to configure RMON MIB groups and to store the data for these groups see Memory Requirements for RMON Groups on page B 11 Review the recommended software and hardware requirements for RMON and RMON2 operation Table 2 1 lists the software and hardware requirements for
84. up The Application Layer Host group records the amount of traffic by protocol sent from and to each network layer address discovered by the Ethernet DCM To implement this group you must first implement the Network Layer Host group The Ethernet DCM adds all addresses seen as the source or destination address in all packets with no MAC errors to the application layer host table and increments octet and packet counts for all packets with no MAC errors Network Layer Matrix Group The Network Layer Matrix group provides a table of traffic matrix entries that collect statistics for conversations between two network layer addresses This table is indexed first by the source address and then by the destination address to make it convenient to collect all conversations from a particular address The Ethernet DCM adds all pairs of addresses seen in all packets with no MAC errors to this table and increments octet and packet counts for all packets with no MAC errors 300018 A Rev 00 B 9 Configuring RMON and RMON2 Application Layer Matrix Group The Application Layer Matrix group provides a table of application layer traffic matrix entries which collect statistics for conversations of a particular protocol between two network layer addresses This table is indexed first by the source address and then by the destination address to make it convenient to collect all conversations from a particular address The Ethernet DCM adds all pairs of
85. uration information in DRAM to its local DCM flash memory overwriting the existing configuration file If you do not want to overwrite the DCM configuration file set the Save Configuration Info parameter to No Save To set the save mode for the configuration information complete the following steps Site Manager Procedure You do this System responds 1 In the Configuration Manager window choose Platform The Platform menu opens 2 Choose DCM 11 0 and later The DCM 11 0 and later menu opens 3 Choose Global The Global menu opens 4 Choose Base Module DCM or Expansion Module DCM The Edit Base Module DCM Parameters window or the Edit Expansion Module DCM Parameters window opens 5 Set the Save Configuration Info parameter Click on Help or see the parameter description on page A 4 6 Click on OK You return to the Configuration Manager window 4 10 300018 A Rev 00 Customizing a DCM for RMON and RMON2 Rebooting the Ethernet DCM After you finish modifying Ethernet DCM configuration parameters you must reboot the Ethernet DCM for these changes to take effect You do this by reenabling the Ethernet DCM To reboot the Ethernet DCM complete the following steps You do this Site Manager Procedure System responds 1 In the Configuration Manager window choose Platform The Platform menu opens 2 Choose DCM 11 0 and later T
86. ws the statistics collected for the Protocol Distribution group using the Optivity Analysis for Windows NT application FA Protocol Statistics 192 168 153 100 192 168 153 100 Options View Encapsulation All B rip E snmptrap snmp Packets sec netbios ns y 15 58 53 155924 Optivity Analysis for Windows NT Figure B 2 Protocol Distribution Statistics B 8 300018 A Rev 00 RMON and RMON2 MIB Groups Address Mapping Group The Address Mapping group maps network layer addresses to MAC layer addresses discovered by the Ethernet DCM The network management application can correlate these network layer addresses to names via DNS or another naming utility The Ethernet DCM creates entries in this table for all protocols that it understands If it cannot perform address mapping for the protocol or if this protocol is not a network layer protocol then it does not interpret the addresses Network Layer Host Group The Network Layer Host group records the amount of traffic sent to and from each network layer address discovered by the Ethernet DCM These entries enable the collection of the network and application layer host tables indexed by network addresses Entries in the network layer host table are created on behalf of each entry in this table Additionally if the Ethernet DCM implements the application layer host table entries in that table are created on behalf of this table Application Layer Host Gro

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