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Avaya Configuring PPP Services User's Manual

1. Figure 1 1 Point to Point Network Connection nrrrrnrrrnnnnvnnrnrrrnnnnrnnnenrrenrnrrenennrenenn 1 1 Figure 1 2 PPP Interface Initialization 0 2 2 eeeecececeeeeeeee cece eeeeeeeeeceeeesaeeseeeeeeeaaeeeea 1 6 Figure 1 3 PPP Encapsulated Frame ernnrvnnnnnvnnnnvrrnnnnvnnnvrrnnnnnrnnnerrrnsnnrnenerresrsrnnsennn 1 8 Figure 1 4 Link Quality Monitoring from Router As Perspective a nn 1 10 Figure 2 1 Multilink Circuits reennrrnnonrvrnrnrrrnnnnvnnrvrrnnnnnvnnrrrrrrennnererrreennrnnnerrresssrnnsennn 2 4 Figure 4 1 Configuration Manager Window rrrnnannvnnnnvrnnnnnvnnrnrrrrnnnrnnnenrrerrnrrnsennresen 4 2 Figure 4 2 PPP Interface Lists Window rrrnnnrrnnnnnvnnrnrrrnnnnvnnrerrrnennrnnnerrreesnrrnsennreeen 4 3 Figure 4 3 PPP Line Lists Window arnrnnrorrrrennrrnnenrrvernrrnnnnnrrnrrrrreennnnnrerrressnnnnsennren 4 16 vii viii Tables Table 1 1 Data Link Control Protocol Options rvnanvrernrrrnnnnvnnrrrrrnnnnrnnrerrreennrnnnennn 1 2 Table 1 2 Network Control Protocols and Options c ceeecceesseeeeeeneeeseteeeeeeeetes 1 3 Table 2 1 Comparing Multiline and PPP Multilink oorrrnennrnnnorrrrnnnrrnnenrrrnnnrrnnrnnrneenr 2 7 Table 2 2 PPP Synchronous Line Parameter Values c sccceeeseseeeeeeeesteeeeeeeaes 2 8 Table A 1 Point to Point PPP Interface Parameters rrrnnrnvrnnnnvrnnnnnvnnrrrrnnnnnrnnrnnr A 1 Table A 2 Point to Point PPP Line Parameters onrrnnnnrrnnnn
2. MIB Object ID 1 3 6 1 4 1 18 3 5 9 2 1 1 33 CHAP Periodic Timer None Any number of seconds Setting this value to 0 disables the timer A reasonable value for this parameter is 60 Allows for repeated authentication challenges at an interval in seconds that either peer on the link can specify The timer begins counting when an authentication phase has completed A new challenge does not begin until the amount of time you specify elapses Set to 60 If you have not configured CHAP ignore this field 1 3 6 1 4 1 18 3 5 9 2 1 1 35 4 29 Configuring PPP Services Parameter Default Options Function Instructions MIB Object ID Deleting PPP Allow PAP Reject Disable Enable Disable Some peers do not use PAP If you set this parameter to Enable your router accepts the Reject message from such a peer and removes PAP from the LCP Configure Request Select Enable or Disable If you have not configured PAP ignore this field 1 3 6 1 4 1 18 3 5 9 2 1 1 39 To delete PPP from all circuits on which it is currently configured complete the following steps 1 From the Configuration Manager window refer to Figure 4 1 select Protocols gt PPP gt Delete PPP window pops up and asks Do you REALLY want to delete PPP Click on OK Site Manager returns you to the Configuration Manager window PPP is no longer operating on the router Note Site Manger does not allow you to
3. 4 22 Editing PPP Parameters Parameter Local PAP Password Default None Options Any text string maximum 25 characters Function Specifies the PAP password assigned to this interface During the interface s authentication phase all Password Authenticate Request messages sent to this interface by the peer router must include the correct PAP password Otherwise the peer router sends an Authenticate NAK message and the link is not created Instructions If you have not enabled PAP ignore this field If you set the Local Authentication Protocol to PAPAUTH specify a unique local PAP password for this interface To implement your changes set the Enable LCP parameter to Disable click on Apply and then reset the parameter to Enable Note For dial services that use PAP you must configure local PAP Password through the Dial menu See Configuring Dial Services for details MIB Object ID 1 3 6 1 4 1 18 3 5 9 2 1 1 18 4 23 Configuring PPP Services MIB Object ID Parameter Default Options Function Instructions Remote PAP ID None Any text string maximum 25 characters Specifies the PAP ID assigned to the remote peer router During the interface s authentication phase this interface must include the correct Remote PAP ID in all Password Authenticate Request messages it sends to the peer router or the peer router sends an Authenticate NAK message and the link is not created If the remote peer doe
4. Bay Networks provides live telephone technical support to our distributors resellers and service contracted customers from two U S and three international support centers If you have purchased your Bay Networks product from a distributor or authorized reseller contact the technical support staff of that distributor or reseller for assistance with installation configuration troubleshooting or integration issues Customers also have the option of purchasing direct support from Bay Networks through a variety of service programs The programs include priority access telephone support on site engineering assistance software subscription hardware replacement and other programs designed to protect your investment To purchase any of these support programs including PhonePlus for 24 hour telephone technical support call 1 800 2LANWAN Outside the U S and Canada call 408 764 1000 You can also receive information on support programs from your local Bay Networks field sales office or purchase Bay Networks support directly from your reseller Bay Networks provides several methods of receiving support and information on a nonpriority basis through the following automated systems CompuServe Bay Networks maintains an active forum on CompuServe All you need to join us online is a computer a modem and a CompuServe account We also recommend using the CompuServe Information Manager software available from CompuServe The Bay Network
5. CHAP Secret None CHAP Local Name None CHAP Periodic Timer None Allow PAP Reject Disable Appendix B PPP Statistics The following table summarizes the PPP statistics you can view from the Site Manager Statistics Manager tool or from the Technician Interface Table B 1 PPP Statistics MIB object name What it tells you wfPppMIStatsCircuitID Circuit number for this instance wfPppMIStatsHomeSlot Slot on which this multilink control subsystem exists wfPppMIStatsLineCnt Current count of lines in the multilink bundle wfPppMIStatsBundleSpd Current total bandwidth of the multilink bundle wfPppMIStatsMrru Current Maximum Receive Reconstructed Unit MRRU in use for the multilink bundle wfPppMIStatsEndptDisc Current Endpoint Discriminator in use for the multilink bundle wfPppMIStatsTxOctets Number of octets transmitted by multilink wfPppMIStats TxPkts Number of packets transmitted by multilink wfPppMIStatsAvgTxListLen Average number of packets received in the transient list by the Multilink Transmit gate wfPppMIStatsRxOctets Number of octets received without error wfPppMIStatsRxPkts Number of packets received by multilink wfPppMIStatsReasmFails Number of packet reassembly failures wfPppMIStatsSeqNumberLost Number of multilink packets considered to be lost on the wire Configuring PPP Services Table B 1 PPP Statistics continued
6. Specifies the CHAP secret you assign to this interface The CHAP secret must be the same on both sides of the link Both routers on a link must have the same secret to correctly calculate responses to challenges either one of them may send to the other during the authentication process and the network layer negotiation phase Note For all dial services you must configure CHAP Secret through the Dial menu See Configuring Dial Services for details Instructions MIB Object ID If you have not enabled CHAP ignore this field If you have enabled CHAP specify the secret To implement your changes set the Enable LCP parameter to Disable click on Apply and then reset the parameter to Enable 1 3 6 1 4 1 18 3 5 9 2 1 1 31 4 28 Parameter Default Options Function Instructions Editing PPP Parameters CHAP Local Name None Any text string maximum 20 characters A local CHAP Name informs the peers of each other s identity If you configure CHAP as an authentication protocol you must use CHAP Local Name for router identification on a bandwidth on demand dial on demand or dial backup line If you do not configure CHAP you cannot use CHAP Local Name for identification instead you must configure PAP Note For all dial services you must configure CHAP Local Name through the Dial menu See Configuring Dial Services for details MIB Object ID Parameter Default Options Function Instructions
7. paths can arrive at their destination out of sequence Multilink maintains the sequence of packets sent over different lines of the link Support for bandwidth on demand No Yes Miscellaneous e Address based selection does not always result in even traffic distribution across all data paths e Random selection provides for even traffic distribution All lines in a circuit must negotiate and perform multilink You cannot use non multilink lines in a circuit with multilink lines e All data packets sent over a PPP multilink circuit travel as multilink packets PPP Synchronous Line Parameters If you enable PPP on a circuit PPP automatically sets the following synchronous line parameters Table 2 2 Table 2 2 PPP Synchronous Line Parameter Values Parameter Value BOFL Disable Promiscuous Enable Service Transparent WAN Protocol PPP 2 8 Implementation Notes For more information on these parameters refer to Configuring Routers or Configuring Customer Access BNX Software as appropriate for your platform PPP Software Incompatibilities If you need to configure PPP to run over a point to point connection between a Version 5 x and a Version 10 0 router read this section Note This section is not relevant for BNX software Version 5 x router software uses a Bay Networks proprietary implementation of PPP Version 7 x Version 8 x Version 9 x a
8. you must force Link Control Protocol LCP renegotiation on the interface for your changes to take effect Remote IP Address IPX Remote Node Number Remote AppleTalk Node AppleTalk Routing Protocol Bridge Ethernet Bridge FDDI Bridge Token Ring 4 3 Configuring PPP Services You must disable and then re enable the corresponding network control protocol to implement your changes Therefore after making all your changes to any of the parameters listed in the previous steps but before proceeding to Step 4 do the following a Set the corresponding network control protocol parameter s to Disable For example if you change the Remote IP Address parameter set the IP Enable parameter to Disable if you change the Remote AppleTalk Node parameter set the AppleTalk Enable parameter to Disable b Click on Apply c Reset the corresponding network control protocol parameters to Enable 4 Click on Apply to implement your changes 5 Click on Done to exit the window If you configure bandwidth on demand dial on demand or dial backup services you see a special PPP record for demand or backup circuits in the PPP Interface Lists window that reads Interface for Dialup Lines This is a generic PPP record that dial services circuits use for identification purposes 4 4 Editing PPP Parameters PPP Interface Parameter Descriptions Use the following guidelines to configure the parameters in the PPP Interface Lists
9. 1 8 PPP Overview Monitoring the PPP Link To ensure that the router can successfully transfer data PPP monitors the quality of the point to point link with Link Quality Monitoring LQM and Link Quality Report LQR packets PPP supports LQM over standard synchronous interfaces only PPP does not support LQM over high speed serial interfaces HSSI BNX software however does support LQM and LQR over HSSI interfaces Note PPP uses LOM and LOR only if you set the Link Quality Protocol parameter to LINKQR The default is None When you enable link quality monitoring through the Link Quality Protocol you are turning on monitoring only for the local router For link quality monitoring to be operational it only has to be enabled on one side of the link If two routers are configured for different link quality reporting periods they negotiate to the lower value so that the LQR period will be the same on both sides of the link LQR packets contain counters of incoming and outgoing data packets for the routers on each side of the link Each time a router receives an LQR packet PPP uses that packet to calculate the outbound link quality the percentage of packets the router transmitted that its peer successfully receives and the inbound link quality the percentage of packets that the peer transmitted that this router successfully receives After five LQR reporting periods PPP averages the inbound and outbound link quality and compares th
10. Instructions MIB Object ID Parameter Default Range Function Instructions MIB Object ID Parameter Default Range Function Instructions MIB Object ID Enable LCP Enable Enable Disable Enables or disables the Link Control Protocol LCP on the PPP interface Disabling this parameter generates a close event to LCP Similarly enabling this parameter generates an open event to LCP To disable LCP on this interface set this parameter to Disable 1 3 6 1 4 1 18 3 5 9 2 1 1 2 Restart Timer in Seconds 3 seconds 1 to 1000 Specifies the number of seconds that the Restart Timer waits before retransmitting data Accept the default value of 3 1 3 6 1 4 1 18 3 5 9 2 1 1 7 Seconds between Xmit of Echo Request 0 seconds 0 to 100 Specifies the number of seconds that the router waits between the transmission of Echo Request packets A value of 0 means that this parameter is turned off Accept the default value of 0 or enter an integer value in the range 0 to 100 1 3 6 1 4 1 18 3 5 9 2 1 1 8 4 18 Parameter Default Range Function Instructions MIB Object ID Parameter Default Range Function Instructions MIB Object ID Editing PPP Parameters Echo Reply Acceptable Loss 3 packets 1 to 100 Specifies the maximum number of unacknowledged Echo Reply packets that the router will transmit before declaring the point to point link down Ac
11. being routed over this interface To stop IPX traffic from being routed over this interface set this parameter to Disable 1 3 6 1 4 1 18 3 5 9 2 2 1 17 Bridge Enable If you enable the bridge on this interface Site Manager automatically sets this parameter to Enable Otherwise the default is Disable Enable Disable Enables or disables the network control protocol for the bridge This parameter does not enable or disable bridging services for the interface it affects the network control protocol for the bridge However disabling the network control protocol for the bridge stops traffic from being bridged over this interface To stop traffic from being bridged over this interface set this parameter to Disable 1 3 6 1 4 1 18 3 5 9 2 2 1 18 4 8 Parameter Default Options Function Instructions MIB Object ID Parameter Default Options Function Instructions MIB Object ID Editing PPP Parameters VINES Enable If you enable VINES support on this interface Site Manager automatically sets this parameter to Enable Otherwise the default is Disable Enable Disable Enables or disables the network control protocol for VINES This parameter does not enable or disable VINES routing services for the interface it affects the network control protocol for VINES However disabling the network control protocol for VINES stops VINES traffic from being routed over this interface To st
12. include one ISDN B channel an aggregation of T1 DSOs one dial up modem connection and one leased T1 line Links can be either leased or switched lines All links must have the same datalink encapsulation PPP and all links must have the same maximum transmission unit MTU On non ISDN lines you must configure the clock speed When you enable multilink you can configure a set of links between two peers into a single bundle which can consist of up to four links possibly of different bandwidths With multilink configured leased lines in a bundle can be on different router slots Multilink distributes traffic over each logical line in a bundle in an amount roughly proportional to the effective bandwidth of the link With multilink and bandwidth on demand enabled you can configure one side of the link as the congestion monitor This router monitors network traffic and line usage When the traffic exceeds a user specified threshold the bandwidth on demand monitor can initiate the bringing up of a secondary line Figure 2 1 shows a configuration that uses the multilink feature LAN LAN Circuit 1 lt 4 gt Bundle with 2 Links Ef 3 Se A Bundle with 3 Links Circuit 2 lt 4 gt Figure 2 1 Multilink Circuits 2 4 Implementation Notes As Figure 2 1 shows yo
13. on this interface Site Manager automatically sets this parameter to Enable Otherwise the default is Disable VINES Enable If you enabled VINES support on this interface Site Manager automatically sets this parameter to Enable Otherwise the default is Disable CCP Enable If you enabled data compression on this interface Site Manager automatically sets this parameter to Enable Otherwise the default is Disable Remote IP Address 0 0 0 0 IPX Network Number None IPX Remote Node Number None Remote AppleTalk Node None AppleTalk Routing Protocol RTMP Bridge Ethernet Enable Bridge FDDI Enable Bridge Token Ring Enable PPP Mode Normal for a nonmultilink circuit Multilink for a multilink circuit Max Links 4 Max Buffers 30 PPP Parameter Default Settings Table A 2 Point to Point PPP Line Parameters Parameter Default Enable LCP Enable Restart Timer in Seconds 3 Seconds between Xmit of Echo 0 Request Echo Reply Acceptable Loss 3 Max Configure Requests 10 Max Terminate Requests 2 Max Configuration Failure Count 10 Local Authentication Protocol None Local PAP ID None Local PAP Password None Remote PAP ID None Remote PAP Password None Enable PAP Fallback Disable Link Quality Protocol None Peer Link Quality Report Timer Enable LQR Reporting Period 3 Inbound Link Quality 90 Outbound Link Quality 90
14. over this interface To stop DECnet IV traffic from being routed over this interface set this parameter to Disable 1 3 6 1 4 1 18 3 5 9 2 2 1 15 AppleTalk Enable If you enable AppleTalk support on this interface Site Manager automatically sets this parameter to Enable Otherwise the default is Disable Enable Disable Enables or disables the network control protocol for AppleTalk This parameter does not enable or disable AppleTalk routing services for the interface it affects the network control protocol for AppleTalk However disabling the network control protocol for AppleTalk stops AppleTalk traffic from being routed over this interface To stop AppleTalk traffic from being routed over this interface set this parameter to Disable 1 3 6 1 4 1 18 3 5 9 2 2 1 16 4 7 Configuring PPP Services Parameter Default Options Function Instructions MIB Object ID Parameter Default Options Function Instructions MIB Object ID IPX Enable If you enable Internet Packet Exchange IPX support on this interface Site Manager automatically sets this parameter to Enable Otherwise the default is Disable Enable Disable Enables or disables the network control protocol for IPX This parameter does not enable or disable IPX routing services for the interface it affects the network control protocol for IPX However disabling the network control protocol for IPX stops IPX traffic from
15. packets that the originating router sends should no longer specify the unacceptable options Configure NAK If the Configure Request packet contains proposed values for options that the peer disagrees with it responds with a Configure Negative Acknowledgment NAK packet The Configure NAK packet notes the values that the peer disagrees with and it includes the corresponding values that the peer would like to see in subsequent Configure Request packets LCP negotiations between peers continue until either the routers converge reach an agreement regarding the Configure Request and PPP advances to the next phase or until the peer router transmits a user specified number of Configure NAK packets before sending a Configure Reject packet When the originating router receives a Configure Reject packet the originating router removes the offending options The routers should then converge Figure 1 2 demonstrates how a PPP interface initializes Configuring PPP Services C J C J Router A Router B 1 PPP interface comes alive on network begin LCP negotiations Send Configure Request gt lt ___ Send Configure Request lt Send Configure ACK Send Configure ACK 2 LCP opened begin authentication phase PAP or CHAP PAP CHAP Send Authenticate Request gt Challenge gt lt Send Auth
16. slower link the router can send about seven packets over the faster link 2 5 Configuring PPP Services On the receiving end multilink resequences packets arriving on different links using the sequence number from the multilink header Gaps in the ordering may occur however when packets are corrupted or otherwise lost or when they arrive after packets with later sequence numbers To minimize this situation multilink buffers out of sequence packets in case the preceding sequence numbered packets arrive shortly after the later numbered packets Configuring Multilink Operation You configure a PPP multilink circuit by selecting the appropriate value in the PPP circuit entry record for the intended circuit This parameter controls whether the local side of the bundle attempts to negotiate the multilink protocol and whether the local circuit operates as the congestion monitor for bandwidth on demand The congestion monitor locally monitors traffic congestion on the circuit Only one side of any connection should be the congestion monitor Protocol Prioritization Note BNX software uses a different protocol prioritization mechanism from that described in this section For information on BNX traffic prioritization and congestion control mechanisms refer to Configuring Customer Access BNX Software When you configure a router you can prioritize the different types of traffic sent across a synchronous line This process is called pro
17. that you need to enter and command names in text Example Use the dinfo command Indicate optional elements You can choose none one or all of the options Indicates variable values in command syntax descriptions new terms file and directory names 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 Horizontal and vertical ellipsis points indicate omitted information 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 XV Configuring PPP Services Acronyms ANSI ARP ATM BNCP BNX BOFL CCP CHAP CMIP CRC DNCP EGP FCS FDDI HDLC HSSI IP IPCP IPX IPXCP LAN LCP LQM LOR MAC MIB MTU NCP OSI OSINLCP PAP American National Standards Institute Address Resolution Protocol Asynchronous Transfer Mode Bridge Network Control Protocol Backbone Node Switch Breath of Life message Compression Control Protocol Challenge Handshake Authentication Protocol Common Management Information Protocol Cyclic Redundancy Check DECnet Phase IV Control Protocol Exterior Gateway Protocol Frame Check Sequence Fiber Distributed Data Interface High level Data Link Cont
18. the parameter to Enable 1 3 6 1 4 1 18 3 5 9 2 1 1 11 Max Configuration Failure Count 10 1 to 100 Specifies the maximum number of Configure NAK packets the router sends before sending a Configure Reject packet for those options that it does not agree with Accept the default value of 10 If you enter a different value you must set the Enable LCP parameter to Disable click on Apply and then reset the parameter to Enable to implement your change 1 3 6 1 4 1 18 3 5 9 2 1 1 12 4 20 Parameter Default Options Editing PPP Parameters Local Authentication Protocol CHAP for dialed services None for all others None PASSAUTH CHAP Note For all dial services you must use PAP or CHAP either of which provides an identification mechanism that is essential to bring up demand backup and bandwidth lines You must configure CHAP Local Name CHAP Secret PAP ID and PAP Password through the Dial menu See Configuring Dial Services for details Function Instructions MIB Object ID Specifies the type of authentication protocol that this interface uses none PAP Password Authentication Protocol or CHAP Challenge Handshake Authentication Protocol If you do not want to enable security features on this interface accept the default None To enable Password Authentication Protocol select PASSAUTH Then do the following Define the Local PAP ID and Local PAP Password parameters for this in
19. verify that the value you enter for a parameter is valid Entering an invalid value can corrupt your configuration After you enable PPP you can edit all PPP parameters from the Configuration Manager window Figure 4 1 For instructions on using Site Manager to access this window refer to Configuring Routers or Configuring Customer Access BNX Software as appropriate for your platform 4 1 Configuring PPP Services BT antigratten ge Configuration Kode local LOCAL FILE kp ent un Zeches sd ppp screen r Bockbone Link Hode ELH 9 00 Color Key Used Hee lp kon org bows me Sat Sen Ga come coms RSC 420 fuel Sc Single H 8 S300 Qued Sync A57VN0 co oon i Bustes Resource Kodule GH EI Figure 4 1 Configuration Manager Window Editing PPP Interface Parameters To edit the PPP interface specific parameters begin at the Configuration Manager window shown in Figure 4 1 and proceed as follows 1 Select Protocols gt PPP Interfaces The PPP Interface Lists window appears Figure 4 2 You must scroll the list to see all the parameters on this window 4 2 Editing PPP Parameters AMS Enable DECnet IV Enabig AppleTalk Enable IP Enable Figure 4 2 PPP Interface Lists Window Select the PPP interface that you want to edit Edit those parameters you want to change referring to the descriptions following this procedure for guidelines If you change any of the following parameters
20. 100 100 4 100 100 100 5 100 100 100 Outbound average after 5 LQR periods 100 LOR Period Packets Router A Packets Router B Inbound Link Received Transmitted Quality Router A 1 90 100 90 2 90 100 90 3 90 100 90 4 90 100 90 5 90 100 90 Inbound average after 5 LQR periods 90 Figure 1 4 Link Quality Monitoring from Router A s Perspective PPP Overview In addition to LQR packets PPP periodically transmits Echo Request packets when Echo Request is enabled If the peer transmits a user specified number of Echo requests before receiving an Echo reply from its peer router the router disables the link and restarts Chapter 2 Implementation Notes This chapter addresses special configuration features of Bay Networks Point to Point Protocol PPP services It also contains basic guidelines on configuring PPP interfaces PPP Data Compression The Bay Networks data compression feature lets you reduce line costs and improve response times over wide area networks WANs running PPP Our data compression eliminates redundancies in data streams When you use compression on your network bandwidth efficiency improves and you can transmit more data over a given amount of network bandwidth Bay Networks data compression services for PPP include e Software based compression for all platforms and all serial interfaces e Hardware based data compression for PPP networks that use the octal sync
21. 4 1 18 3 5 9 2 1 1 20 Enable PAP Fallback Disable Enable Disable Enabling this parameter causes a fallback to PAP if you have selected CHAP as the authentication protocol and an attempt to negotiate CHAP fails Select Enable or Disable Set this parameter to Enable if you are using any of the switched services Remember that you must use an authentication protocol if you are using bandwidth on demand dial on demand or dial backup 1 3 6 1 4 1 18 3 5 9 2 1 1 32 4 25 Configuring PPP Services Parameter Default Options Function Instructions MIB Object ID Parameter Default Options Function Instructions MIB Object ID Link Quality Protocol None None LINKQR Enables or disables the Link Quality Protocol for this interface To enable link quality reporting set this parameter to Link Quality Report When you enable link quality reporting on one side of the connection the router on which you enable it is responsible for monitoring link quality for the connection To implement your changes set the Enable LCP parameter to Disable click on Apply and then reset the parameter to Enable 1 3 6 1 4 1 18 3 5 9 2 1 1 21 Peer Link Quality Report Timer Enable Enable Disable This parameter deals with the remote peer not the local one The setting determines whether the remote peer runs the Link Quality Report Timer LQR for the connection Setting this parameter enables or disabl
22. Configuring PPP Services Router Software Version 10 0 Site Manager Software Version 4 0 Software Version BNX 6 0 Site Manager Software Version BNX 6 0 Part No 112920 Rev A January 1996 a Bay Networks ES Bay Networks 4401 Great America Parkway 8 Federal Street Santa Clara CA 95054 Billerica MA 01821 Copyright 1988 1996 Bay Networks Inc All rights reserved Printed in the USA January 1996 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 Restricted Rights Legend Use duplication or disclosure by the United States Government is subject to restrictions as set forth in subparagraph c 1 Gi of the Rights in Technical Data and Computer Software clause at DFARS 252 227 7013 Notice for All Other Executive Agencies Notwithstanding any other license agreement that may pertain to or accompany the delivery of this computer software the righ
23. Interface To enable PPP on an interface complete the following steps 1 Select PPP from the WAN Protocols menu this menu appears after you select a link or net module connector that requires a WAN circuit If you are running router as opposed to BNX software Protocol prioritization is enabled automatically when you select PPP For detailed information on protocol prioritization refer to Configuring Traffic Filters and Protocol Prioritization 2 Click on OK to enable default PPP service The Configuration Manager displays the Select Protocols window Refer to the appropriate protocol specific guides for information on enabling the protocols you want to run on this interface 3 1 Chapter 4 Editing PPP Parameters This chapter provides information on how you can edit or customize the parameters for the PPP interfaces that you configure on the router For each PPP parameter that you configure this chapter gives the default setting all valid parameter options the parameter function instructions for setting the parameter and the 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
24. MIB object name What it tells you wfPppMIStatsSeqNumberArrivedLate Number of multilink packets that arrive containing an old sequence number that is packets with a more current sequence number have already been sent up to NCP wfPppMIStatsReSeqBufferCnt Number of multilink packets currently stored in the ReSequencing buffer pool wfPppMIStatsReSeqBufferMax The maximum number of multilink packets stored in the ReSequencing buffer pool wfPppMIStatsExceededBufferMax The number of times a buffer needed to be stored by the Multilink Receive logic when the count of buffers stored wfPppMIStatsReSeqBufferMax was equal to the maximum allowable for this circuit wfPppCircuitMaxBuffers wfPppMIStatsLinkldleEvents The number of times the Multilink Receive logic detected a stored buffer received on a line what has been declared idle wfPppMIStatsCalcPercent Enable disable calculating the percentage of multilink octets received on the line A Allow PAP Reject parameter 4 30 default setting A 3 AppleTalk Control Protocol 1 3 AppleTalk Enable parameter 4 7 default setting A 1 AppleTalk Routing Protocol parameter 4 12 default setting A 2 authentication protocols CHAP 1 2 1 7 PAP 1 2 1 7 setting parameters 4 21 4 28 using with dial services 1 7 bandwidth on demand 1 2 2 2 Bay Networks CompuServe forum xiii customer support xiii Home Page on World Wide Web xiv InfoFACT
25. S service xiv publications ordering xv Technical Response Center xiv BNX software HSSI link quality monitoring 1 9 IP Enable parameter 4 5 prioritization mechanism 2 6 BOFL synchronous line parameter 2 8 Bridge Enable parameter 4 8 default setting A 2 Bridge Ethernet parameter 4 12 default setting A 2 Index Bridge FDDI parameter 4 13 default setting A 2 Bridge Network Control Protocol BNCP 1 3 Bridge Token Ring parameter 4 13 default setting A 2 C CCP Enable parameter 4 9 default setting A 2 Challenge Handshake Authentication Protocol CHAP 1 2 1 7 2 2 setting parameters 4 21 4 28 CHAP Local Name identification mechanism 2 2 Chap Local Name and Interface for Dialup Lines 4 15 identification mechanism 1 2 4 15 used for authentication 1 2 Chap Local Name parameter 4 29 default setting A 3 Chap Periodic Timer parameter 4 29 default setting A 3 Chap Secret parameter 4 28 default setting A 3 circuit statistics calculating and viewing 2 11 comparing multiline and PPP multilink 2 7 compatibility with previous versions 2 9 Compression Control Protocol CCP 4 9 compression data 2 1 Index 1 CompuServe Bay Networks forum on xiii Configure ACK packet 1 5 Configure NAK packet 1 5 setting maximum number 4 20 Configure Reject packet 1 5 Configure Request packet 1 4 setting maximum number 4 19 configuring PPP interfaces guidelines 2 1 congestion monitor 2 4 customer support See ge
26. SI traffic from being routed over this interface To stop OSI traffic from being routed over this interface set this parameter to Disable 1 3 6 1 4 1 18 3 5 9 2 2 1 13 XNS Enable If you enable XNS support on this interface Site Manager automatically sets this parameter to Enable Otherwise the default is Disable Enable Disable Enables or disables the network control protocol for XNS This parameter does not enable or disable XNS routing services for the interface it affects the network control protocol for XNS However disabling the network control protocol for XNS stops XNS traffic from being routed over this interface To stop XNS traffic from being routed over this interface set this parameter to Disable 1 3 6 1 4 1 18 3 5 9 2 2 1 14 4 6 Parameter Default Options Function Instructions MIB Object ID Parameter Default Options Function Instructions MIB Object ID Editing PPP Parameters DECnet IV Enable If you enable DECnet IV support on this interface Site Manager automatically sets this parameter to Enable Otherwise the default is Disable Enable Disable Enables or disables the network control protocol for DECnet IV This parameter does not enable or disable DECnet IV routing services for the interface it affects the network control protocol for DECnet IV However disabling the network control protocol for DECnet IV stops DECnet IV traffic from being routed
27. Seconds 4 18 A 3 Seconds between Xmit of Echo Request 4 18 A 3 synchronous line 2 8 Password Authentication Protocol PAP 1 7 2 2 setting parameters 4 21 Peer Link Quality Report Timer parameter 4 26 default setting A 3 Point to Point Protocol See PPP PPP deleting 4 30 enabling 3 1 implementation notes 2 1 2 10 Link Control Protocol LCP 1 4 overview 1 1 parameter default settings A 1 A 3 Statistics B 1 PPP Interface Lists window 4 5 PPP Interface parameters 4 5 PPP Line parameters 4 15 PPP Mode parameter default setting A 2 prioritization BNX software 2 6 protocol 2 6 Promiscuous synchronous line parameter 2 8 protocol prioritization 2 6 protocols data link control options 1 2 network 1 3 Index 4 Q quality monitoring for link s 1 9 R receive percentages calculating and viewing 2 11 Remote AppleTalk Node parameter 4 11 default setting A 2 Remote IP Address parameter 4 10 default setting A 2 Remote PAP ID parameter 4 24 default setting A 3 Remote PAP Password parameter 4 25 default setting A 3 Restart Timer in Seconds parameter 4 18 default setting A 3 RFCs relevant to PPP 2 9 routing over a PPP link 1 3 S Seconds between Xmit of Echo Request parameter 4 18 default setting A 3 Service synchronous line parameter 2 8 software incompatibilities 2 9 source routing over Token Ring networks incompatibilities 2 9 statistics B 1 calculating and viewing 2 11 switched line PPP suppo
28. adnk ret 2 4 Compatibility with Previous Versions urrrnnrsnvrnnnnrnnnrnrnnnnnvnnnrnnennrrrrennnnnnersrrennnnnnnennnn 2 5 Balancing Traffic Lads A 2 5 Configuring Multilink Operation onrrennnvrnnonvvnnnnrrnnnnnnnnnrrrrnnnnrnnrnrrrennnnnenerrressnnnnsennn 2 6 Protocol Priomtizatlon wes 4 face At teat EA thee ae eet 2 6 Differences between Multiline and Multilink A 2 7 PPP Synchronous Line Parameters cccescceceeeeeeeeeeeeeeeeeecaaeeeeneeeseaaeeseaaeesecaeeesaaeeee 2 8 PPP Software Incompatibilities A 2 9 Configuring IP to Run over PPP Interfaces 2 10 Disabling Network Control Protocols 0 ccccceceeeeeeeneeeeeeeeeeeeaeeseeeeeesaaeeseeeeeeseaaeeneneeess 2 10 Calculating and Viewing Line Statistics ccceceeeeeseeeeeeeeeeeeeeeeeeaeeseeeeeeseaeeeseneeeeaas 2 11 Chapter 3 Enabling PPP Service Enabling PPP on an Interface uante aar detailed 3 1 Chapter 4 Editing PPP Parameters Editing PPP Interface Parameters 0 ccccccesecccceeeeeeceeeeeeeeeceeeeenseaeeeeeneaeeeeeenseeaeenenteeee 4 2 PPP Interface Parameter Descriptions urrnnnrrnnrnrnnrrrnnnnnnnrrnnnnennrrrnnnnensrrenerennnranestenennn 4 5 Editing PPP Line Parameters msrrrnnrnrnnrrnnnnnnnnrrnnnrrnnrrrnnrennnrrnnnrsnsrrrnensensrrenerennnrrensnennn 4 15 PPP Line Parameter Descriptions ss sunteti E e e ea Ea ea E e 4 18 Deleting Ze ee EE 4 30 Appendix A PPP Parameter Default Settings Appendix B PPP Statistics Index vi Figures
29. ameter 4 11 default setting A 2 IPXCP 1 3 L line parameters synchronous 2 8 line parameters editing 4 15 line statistics calculating and viewing 2 11 Link Control Protocol LCP definition 1 4 negotiations Configure Ack 1 5 Configure NAK 1 5 Configure Reject 1 5 Configure Request 1 4 link establishment using PPP 1 4 link monitoring 1 9 setting parameters 4 26 link quality monitoring 1 9 Link Quality Protocol 1 2 Link Quality Protocol parameter 4 26 default setting A 3 link quality report 1 9 link routing using PPP 1 3 Local Authentication Protocol parameter 4 21 default setting A 3 Local PAP ID parameter 4 22 default setting A 3 Local PAP Password parameter 4 23 default setting A 3 LQM 1 9 LQR 1 9 LQR Reporting Period parameter 4 27 default setting A 3 Max A 2 Max Buffers parameter default setting A 2 Max Configuration Failure Count parameter 4 20 default setting A 3 Max Configure Requests parameter 4 19 default setting A 3 Max Links parameter default setting A 2 Max Terminate Requests parameter 4 20 default setting A 3 monitor congestion 2 4 monitoring PPP links 1 9 multilink configuring 2 6 multilink and multiline comparison 2 7 Multilink Endpoint Discriminator 1 2 N network connection establishing 1 8 Network Control Protocol NCP disabling 2 10 Network Control Protocols NCPs disabling 2 10 network security 1 2 1 7 O OSI Enable parameter 4 6 default setting A 1 OSI N
30. ate Request and Terminate ACK packets Link maintenance packets including Code Reject Protocol Reject Echo Request and Echo Reply packets When two routers initialize a PPP dialogue each of them sends a Configure Request packet to the other peer router Each Configure Request packet contains a list of LCP options and corresponding values that the sending router uses to define its end of the link For example a Configure Request packet may specify the link s maximum transmission unit MTU size and whether the sender wants to use Password Authentication Protocol PAP or Challenge Handshake Authentication Protocol CHAP The Configure Request packet contains the user configured values which the sender and its peer router may need to negotiate 1 4 PPP Overview Each router receives a Configure Request packet from its peer Each router responds with one of three types of packets Configure ACK If a router accepts the proposed LCP options it responds with a Configure Acknowledgment ACK packet When the routers on each side of the link send and receive Configure ACK packets the LCP advances to an open state which means that the PPP interface can advance to the next phase Configure Reject If the Configure Request packet contains options that the peer router is not willing to negotiate the peer router sends back a Configure Reject packet specifying the nonnegotiable options From that point on Configure Request
31. buffers the likelihood of delays in the arrival of packets and the amount of total network traffic among other variables In general a higher number uses more memory but allows more latitude for late arriving packets Accept the default 30 or specify a value in the range 10 to 60 If you experience buffer resource problems try setting this parameter to a lower value You can determine whether buffer resource problems exist by using the Site Manager Statistics feature or by using the Technician Interface to check the number of times the number of buffers needing to be stored exceeded the number of buffers available the MIB object wfPppMIStatsExceededBufferMax accessible through the Technician Interface counts these occurrences 1 3 6 1 4 1 18 3 5 9 2 2 1 64 Editing PPP Line Parameters To edit the PPP line specific parameters begin at the Configuration Manager window shown in Figure 4 3 and proceed as follows 1 Select Protocols gt PPP Interfaces The PPP Interface Lists window appears refer to Figure 4 2 If you are configuring a bandwidth on demand dial on demand or dial backup line and if you want to configure CHAP Local Name or PAP ID for identification purposes select the Interface for Dialup Lines interface Click on Lines The PPP Line Lists window appears Figure 4 3 4 15 Configuring PPP Services Enable CLEF Restart Timer in Seconds Seconds beteeen Seit of Echo feqeest i Echi Reply Acceptab
32. ceeeeeeeeeeeeaeeeeeaeesecaeeeeeaaeseeeeeessaeeeeeeeeess xiii ul xiii INfORAGT Sisk E EE xiv World Wide Web WEE xiv How to Get Help nrnna Ge eee a a atin eee eed xiv Ordering Bay Networks Publications c ccccececeeeeeeeeeeeeeeeeeeeeeaeeeeeeeeeeaaeeeeeeeeetaeeeeeeeeees XV Gonvemions eene ee E eg XV e Kei xvi Chapter 1 PPP Overview Routing over a PPP DEE 1 3 Initializing a PPP Interface ee rari ea ANE e NAA ERA A aae aE ENAA ALAT S 1 4 Establishing the PPP Link aoea AEREA ERA EAA AEAEE 1 4 Authenticating the PPP Link PAP and CHAP reennvnerevrvnnnnrvenerrernnnrrnrenrenersrrnnenneneenr 1 7 Password Authentication Protocol arannrrrnnnannnvrnnnnnnnrrrnnnnnnsrrnnnnennnrrnnnsensrrvnnenn 1 7 Challenge Handshake Authentication Protocol ccccsscccecessseeeeeeessteeeeeeeees 1 7 Establishing Network Connections ccccccceceeeeeeeeeeeeeaeeeeeeeeeeaeeeseaeeeseaeeeseaeessaees 1 8 Datagram Encapsulation Gheo karei kren nner EEA AA EE EEEE eA EEA EEEN 1 8 Monitoring the PPP Link rrnnnnornrvnnnnornnnvnnnnonnnvnnnnnnnnntnnnnnnnnntnnnnnnnnntnnnnennntnnnnnennvvnnnnnnnnenn 1 9 Chapter 2 Implementation Notes PPP Data Compression iirnisiiriii taaie dained ie ede a ia a iian 2 1 PPP Dial S rvices Support EE 2 2 Bandwidth on Demard sorserien E EEEE EA AE REEN 2 2 RIIT E RT Lee EE 2 2 Dial BACK NEE 2 2 PPP Multiline ua e erd babbel tel 2 3 PPP MUNK Reeg ch e ees enda dens 2 3 Using PPPs Multilink vs akser das as a
33. cept the default value of 3 If you enter a different value you must set the Enable LCP parameter to Disable click on Apply and then reset the parameter to Enable to implement your change 1 3 6 1 4 1 18 3 5 9 2 1 1 9 Max Configure Requests 10 packets 1 to 100000 Specifies the maximum number of unacknowledged Configure Request packets that the router will transmit before assuming that the peer router on the other end of the link is unable to respond The link is then brought down Valid acknowledgments include Configure ACK Configure NAK or Configure Reject packets Accept the default value of 10 If you enter a different value you must set the Enable LCP parameter to Disable click on Apply and then reset the parameter to Enable to implement your change 1 3 6 1 4 1 18 3 5 9 2 1 1 10 4 19 Configuring PPP Services Parameter Default Range Function Instructions MIB Object ID Parameter Default Range Function Instructions MIB Object ID Max Terminate Requests 2 packets 1 to 100 Specifies the maximum number of unacknowledged Terminate Request packets that the router transmits before assuming that the peer router on the other end of the link is unable to respond The valid acknowledgment is a Terminate ACK packet Accept the default value of 2 If you do enter another value to implement your change set the Enable LCP parameter to Disable click on Apply and then reset
34. data received To view the statistics use the Technician Interface to turn on logging for the PPP entity before enabling the percentage calculation Set the wfPppMIStats Debug parameter in the wfPppMIStatsEntry MIB to a value of 1 The router then dumps the received percentages for all lines of that multilink circuit to the log file You can view the log file using the standard log viewing commands in the Technician Interface For information on how to do this refer to Using Technician Interface Software You can use these statistics to determine how well each line in a multilink bundle is performing and to pinpoint potential trouble spots For best performance on a generally stable circuit you should disable the statistics calculation unless you have a particular reason for enabling it Chapter 3 Enabling PPP Service This chapter describes how to enable PPP service It assumes you have read Configuring Routers or Configuring Customer Access BNX Software as appropriate for your platform and have 1 Opened a configuration file 2 Specified router hardware if this is a local mode configuration file 3 Selected the link or net module connector on which you are enabling PPP When you enable PPP service you do not have to configure any PPP parameters The Configuration Manager supplies default values for all PPP parameters If you want to edit the default values refer to Chapter 4 Editing PPP Parameters Enabling PPP on an
35. delete PPP globally from a router that is running bandwidth on demand dial on demand or dial backup 4 30 Appendix A PPP Parameter Default Settings Tables A 1 and A 2 list the default settings for PPP parameters Table A 1 Point to Point PPP Interface Parameters Parameter Default IP Enable If you enabled IP support on this interface Site Manager automatically sets this parameter to Enable Otherwise the default is Disable OSI Enable If you enabled OSI support on this interface Site Manager automatically sets this parameter to Enable Otherwise the default is Disable XNS Enable If you enabled XNS support on this interface Site Manager automatically sets this parameter to Enable Otherwise the default is Disable DECnet IV Enable If you enabled DECnet IV support on this interface then Site Manager automatically sets this parameter to Enable Otherwise the default is Disable AppleTalk Enable If you enabled AppleTalk support on this interface then Site Manager automatically sets this parameter to Enable Otherwise the default is Disable IPX Enable If you enabled IPX support on this interface Site Manager automatically sets this parameter to Enable Otherwise the default is Disable continued Configuring PPP Services Table A 1 Point to Point PPP Interface Parameters continued Parameter Default Bridge Enable If you enabled bridging
36. enticate ACK lt Response Response Match gt Shows Router A initiating authentication Router B can also initiate authentication 3 Authentication complete begin NCP negotiations Send Configure Request gt lt Send Configure Request e Send Configure ACK Send Configure ACK gt 4 NCP open begin transmitting data ee Gend Data Figure 1 2 PPP Interface Initialization 1 6 PPP Overview Authenticating the PPP Link PAP and CHAP In the authentication phase of PPP initialization one or both peer routers enable either Password Authentication Protocol PAP or Challenge Handshake Authentication Protocol CHAP Password Authentication Protocol PAP imposes network security by requiring the peer router to send a PAP packet that contains a plain text user identifier and password to the originating router before the interface can advance to the network layer protocol phase If PAP fails the network administrator must change the identifier and password on both peer routers and disable and re enable LCP to reinitialize the line Challenge Handshake Authentication Protocol CHAP imposes network security by requiring that the peers share a plain text secret The originating peer sends a challenge message to its receiving peer The receiving peer responds with a value it calculates on the basis of knowing the secret The first peer then matches the response against its own calcu
37. es IP routing 802 1 Transparent Bridge Source Route Bridge Translation Bridge SNMP Agent Bay Networks HDLC PPP OSPF EGP BGP and basic DLSw e The LAN Suite includes DECnet Phase 4 AppleTalk Phase 2 OSI VINES IPX and ATM DXI in addition to the System Suite e The WAN Suite includes ATM DXI Frame Relay LAPB and X 25 in addition to the System Suite e The Corporate Suite includes the System LAN and WAN suites in their entirety e The ARE ATM Suite provides RFC 1483 and 1577 compliance ATM UNI 3 0 signaling in addition to the LAN Suite e The ARE VNR Corporate Suite provides ATM Forum LAN Emulation in addition to the ARE ATM Suite and Corporate Suite e The BNX Suite includes IP Routing SNMP Agent Bay Networks HDLC PPP OSPF EGP BGP File Based Performance Statistics Frame Relay switching and Frame Relay billing and selected components from the Corporate ARE ATM and ARE VNR Corporate suites Availability of features and functionality described in this guide depends on the suites you are using Before You Begin Before using this guide you must e Create and save a configuration file that contains at least one WAN interface e Retrieve the configuration file in local remote or dynamic mode Refer to Configuring Routers or Configuring Customer Access BNX Software depending on your platform for instructions on how to do these functions xii About This Guide Bay Networks Customer Support
38. es the remote peer s LQR Timer The peer whose timer is enabled generates one LQR packet for each interval specified in the LQR Reporting Period parameter The peer whose timer is disabled verifies that the other peer did in fact send an LQR If three successive LQRs are not received it disables the connection Use this parameter only when you have enabled the Link Quality Protocol parameter Accept the default Enable if you want the peer router to maintain an LQR timer for the interface Reset this parameter to Disable if you do not want the peer to maintain the LQR timer for the interface To implement your changes set the Enable LCP parameter to Disable click on Apply and then reset the parameter to Enable 1 3 6 1 4 1 18 3 5 9 2 1 1 22 4 26 Parameter Default Range Function Instructions MIB Object ID Parameter Default Range Function Instructions MIB Object ID Editing PPP Parameters LQR Reporting Period 3 seconds 1 to 120 Specifies the maximum number of seconds between the transmission of LQR packets Use this parameter only when you enable the Link Quality Protocol parameter Enter a number representing the interval between the transmission of LQR packets To implement your changes set the Enable LCP parameter to Disable click on Apply and then reset the parameter to Enable 1 3 6 1 4 1 18 3 5 9 2 1 1 23 Inbound Link Quality 90 percent 0 to 100 Speci
39. ese values against a user specified threshold This is a rolling average After the first five LQR reporting periods PPP acquires the data from the next period and drops the oldest data Then it computes the link quality average for that set of five LQR periods and so on If either the inbound or outbound link quality average drops below the threshold PPP brings down the link The driver software automatically brings the link back up and renegotiates the connection PPP monitors the link control packets flowing over the connection and resumes network control protocol packet traffic when the link quality improves Configuring PPP Services For example in Figure 1 4 the acceptable outbound and inbound link quality configured on Router A for the PPP interface is 100 percent After five LQR periods Router A calculates the outbound and inbound link quality averages and determines that the inbound link quality average is below the 100 percent threshold in this case 90 percent As a result Router A disables the link Note Echo Requests are disabled by default and are in no way related to link quality reporting Synchronous Line l Router A Router B i LOR Period Packets Router A Packets Router B Outbound Link Transmitted Received Quality Router A 1 100 100 100 2 100 100 100 3 100
40. eters refer to your Version 5 x configuration guide For further information on configuring different versions of routers to assure software compatibility see Upgrading Routers from Version 5 to Version 10 0 and Upgrading Routers from Version 7 8 xx to Version 10 0 Configuring IP to Run over PPP Interfaces When you enable numbered Internet Protocol IP support on a PPP interface you must also configure an adjacent host entry for the peer router See Configuring IP Services for instructions on configuring an adjacent host entry Disabling Network Control Protocols To stop traffic from routing over a PPP interface either Disable the Network Control Protocol NCP for the upper level routing protocol For example if you disable the NCP for IP even though IP is still enabled on the interface it is no longer able to route traffic over the interface To disable the NCP for IP you set the IP Enable parameter to Disable See Editing PPP Interface Parameters in Chapter 4 for instructions on disabling NCP parameters Disable the upper level routing protocol itself If you disable the routing protocol running on top of the PPP interface Site Manager disables the NCP for the routing protocol automatically For example if you disable IP on an interface Site Manager disables the NCP for IP as well 2 10 Implementation Notes Calculating and Viewing Line Statistics You can optionally calculate receive percentage sta
41. etwork Layer Control Protocol 1 3 Outbound Link Quality parameter 4 28 default setting A 3 Index 3 P PAP 1 2 1 7 2 2 setting parameters 4 21 PAP ID and Interface for Dialup Lines 4 15 identification mechanism 1 2 2 2 used for authentication 1 2 parameters default settings A 1 A 3 interface AppleTalk Enable 4 7 A 1 AppleTalk Routing Protocol 4 12 A 2 Bridge Enable 4 8 A 2 Bridge Ethernet 4 12 A 2 Bridge FDDI 4 13 A 2 Bridge Token Ring 4 13 A 2 CCP Enable 4 9 A 2 DECnet IV Enable 4 7 A 1 editing 4 2 IP Enable 4 5 A 1 IPX Enable 4 8 A 1 IPX Network Number 4 10 A 2 IPX Remote Node Number 4 11 A 2 Max Buffers A 2 Max Link A 2 OSI Enable 4 6 A 1 PPP Mode A 2 Remote AppleTalk Node 4 11 A 2 Remote IP Address 4 10 A 2 VINES Enable 4 9 A 2 XNS Enable 4 6 A 1 line 4 15 Allow PAP Reject 4 30 A 3 Chap Local Name 4 29 A 3 Chap Periodic Timer 4 29 A 3 Chap Secret 4 28 A 3 Echo Reply Acceptable Loss 4 19 A 3 Enable LCP 4 18 A 3 Enable PAP Fallback 4 25 A 3 Inbound Link Quality 4 27 A 3 Link Quality Protocol 4 26 A 3 Local Authentication Protocol 4 21 A 3 Local PAP ID 4 22 A 3 Local PAP Password 4 23 A 3 LQR Reporting Period 4 27 A 3 Max Configuration Failure Count 4 20 A 3 Max Configure Requests 4 19 A 3 Max Terminate Requests 4 20 A 3 Outbound Link Quality 4 28 A 3 Peer Link Quality Report Timer 4 26 A 3 Remote PAP ID 4 24 A 3 Remote PAP Password 4 25 A 3 Restart Timer in
42. fies the minimum acceptable success rate percentage of packets the peer router transmits and this router receives on this interface over the last 5 LQR reporting periods Use this parameter only when you enable the Link Quality Protocol parameter If the percentage drops below the inbound link quality you specify the router brings down the link until the percentage increases to an acceptable level See Monitoring the PPP Link in Chapter 1 for more information Use this parameter only when you enable the Link Quality Protocol parameter Accept the default value 90 1 3 6 1 4 1 18 3 5 9 2 1 1 25 4 27 Configuring PPP Services Parameter Default Range Function Instructions MIB Object ID Parameter Default Options Function Outbound Link Quality 90 percent 0 to 100 Specifies the minimum acceptable success rate percentage of packets the router transmits and the peer router receives on this interface Use this parameter only when you enable the Link Quality Protocol parameter If the percentage drops below the outbound link quality you specify the router brings down the link until the percentage increases to an acceptable level See Monitoring the PPP Link in Chapter 1 for more information Use this parameter only when you enable the Link Quality Protocol parameter Accept the default 90 1 3 6 1 4 1 18 3 5 9 2 1 1 27 CHAP Secret None Any text string maximum 20 characters
43. gure Reject packets Network options include which network addresses to use and which media types to bridge Once both peer routers agree upon network options the network control protocol reaches the opened state The routers then begin transmitting user data packets for any upper layer protocols over the link Datagram Encapsulation Before transmitting data across the link PPP encapsulates data in a frame similar to a High level Data Link Control HDLC frame Figure 1 3 PPP Frame Flag Address Control Protocol Data FCS Flag 1 byte 1 byte 1 byte 2bytes Variable 2or 1 byte 4 bytes Figure 1 3 PPP Encapsulated Frame The parts of the PPP frame function as follows e The Flag field marks the beginning and end of a frame Peers on synchronous lines exchange flags continuously when there are no frames to transmit e The Address field indicates which device originated the frame e The Control field shows the frame type information or administrative e The Protocol field indicates the operative network layer protocol e The Data field contains the data one link sends to the other Its length is less than or equal to the MTU line size The default maximum length is 1594 bytes LCP negotiations determine the actual length e The Frame Check Sequence FCS shows the sequence order of the frame router hardware computes the FCS A 16 or 32 bit Cyclic Redundancy Check CRO is at the end of each frame
44. hronous link module for the Backbone Node BN using only FRE processors Bay Networks provides hardware compression as an optional daughterboard that attaches to the octal synchronous link module You can use data compression on all PPP circuits including multiline multilink bandwidth on demand dial on demand and dial backup lines When you use compression on a bandwidth on demand dial on demand or dial backup circuit the data compression feature automatically configures or deletes compression as lines are added to or removed from the circuit For complete descriptions of hardware and software data compression descriptions of compression parameters and instructions for configuring compression over a PPP interface see Configuring Data Compression Services 2 1 Configuring PPP Services PPP Dial Services Support Bay Networks dial services offer access to switched networks through dial up line connections also called switched lines that are active only when you choose to use them In contrast a leased line is always available If you transmit limited amounts of data or if your data transmission is intermittent dial services may let you run your network effectively and economically Site Manager automatically configures PPP on the lines that you select for dial services PPP with either CHAP or PAP implements a router identification mechanism that dial services require Bay Networks provides three types of dial ser
45. ilability e Uses all lines in the bundle for greatest speed and efficiency Number of Up to 31 concurrent data Up to 4 lines bundle physical lines paths group circuit Data paths can either be physical or logical lines multiple independent data paths running over a single physical interface Grouped bundled The data paths that together Lines in a bundle can have data paths make up a multiline circuit must different speeds share the same speed MTU and encapsulation method Line types Can use leased lines Can use leased as well as switched lines Protocol Automatically enabled User can Automatically enabled Not user prioritization specify protocol priority and or configurable Automatically traffic filters assigns highest interrupt priority to LCP packets and assigns all others normal priority Used with these e Bay Networks standard PPP only data link types synchronous e Frame Relay direct mode e PPP 2 7 Configuring PPP Services Table 2 1 Comparing Multiline and PPP Multilink continued Feature Multiline PPP Multilink Media supported e Synchronous e T1 E1 e MCE1 MCT1 e HSSI e Synchronous e T1 E1 e MCE1 MCT1 e HSSI e ISDN B channel drivers e Raise DTR V 25bis modems Packet resequencing Depends on the path selection With address based selection the default packets always arrive in sequence e With random path selection packets traveling on different
46. ine document viewing via the Internet You need a direct connection to the Internet and a Web Browser such as Mosaic or Netscape Bay Networks maintains a WWW Home Page that you can access at http www baynetworks com One of the menu items on the Home Page is the Customer Support Web Server which offers technical documents software agents and an E mail capability for communicating with our technical support engineers How to Get Help For additional information or advice contact the Bay Networks Technical Response Center in your area United States 1 800 2LAN WAN Valbonne France 33 92 966 968 Sydney Australia 61 2 903 5800 Tokyo Japan 81 3 328 005 xiv About This Guide Ordering Bay Networks Publications To purchase additional copies of this document or other Bay Networks publications order by part number from Bay Networks Press at the following numbers You may also request a free catalog of Bay Networks Press product publications Phone FAX U S Canada FAX International Conventions 1 800 845 9523 1 800 582 8000 1 916 939 1010 This section describes the conventions used in this guide arrow character gt bold text brackets italic text quotation marks screen text ellipsis points vertical line 1 Separates menu and option names in instructions Example Protocols gt AppleTalk identifies the AppleTalk option in the Protocols menu Indicates text
47. irective dated 14 May 1991 as may be amended from time to time shall apply for interoperability purposes Licensee must notify Bay Networks in writing of any such intended examination of the Software and Bay Networks may provide review and assistance Notwithstanding any foregoing terms to the contrary if licensee licenses the Bay Networks product Site Manager licensee may duplicate and install the Site Manager product as specified in the Documentation This right is granted solely as necessary for use of Site Manager on hardware installed with licensee s network This license will automatically terminate upon improper handling of Software such as by disclosure or Bay Networks may terminate this license by written notice to licensee if licensee fails to comply with any of the material provisions of this license and fails to cure such failure within thirty 30 days after the receipt of written notice from Bay Networks Upon termination of this license licensee shall discontinue all use of the Software and return the Software and Documentation including all copies to Bay Networks Licensee s obligations under this license shall survive expiration or termination of this license Bay Networks Inc 4401 Great America Parkway Santa Clara CA 95054 8 Federal Street Billerica MA 01821 Contents About This Guide ale le xi EWEG eege ett xii Before YOU BOQ Un TEE xii Bay Networks Customer Support ccccceeeeeeeeece
48. is license Licensee shall not make the resulting software available for use by any third party Neither title nor ownership to Software passes to licensee Licensee shall not provide or otherwise make available any Software in whole or in part in any form to any third party Third parties do not include consultants subcontractors or agents of licensee who have licensee s permission to use the Software at licensee s facility and who have agreed in writing to use the Software only in accordance with the restrictions of this license Third party owners from whom Bay Networks has acquired license rights to software that is incorporated into Bay Networks products shall have the right to enforce the provisions of this license against licensee Licensee shall not remove or obscure any copyright patent trademark trade secret or similar intellectual property or restricted rights notice within or affixed to any Software and shall reproduce and affix such notice on any backup copy of Software or copies of software resulting from modification or combination performed by licensee as permitted by this license Bay Networks Inc 4401 Great America Parkway Santa Clara CA 95054 8 Federal Street Billerica MA 01821 Bay Networks Software License continued 10 11 12 Licensee shall not reverse assemble reverse compile or in any way reverse engineer the Software Note For licensees in the European Community the Software D
49. k number used to negotiate the link The negotiated number must be unique It cannot be a previously assigned network number Note that both sides of the link do not have to have the same network number PPP negotiates the higher of the two numbers Note also that the negotiated number may be 0 that is the IPX network number is 0 on both sides of the link In this case IPX defines the link s network number Enter a valid IPX network number for each PPP interface Be aware that the value for this parameter depends on the IPX configuration for this interface For information about IPX and PPP interaction see Configuring IPX Services 1 3 6 1 4 1 18 3 5 9 2 2 1 24 4 10 Parameter Default Options Function Instructions MIB Object ID Parameter Default Options Function Instructions MIB Object ID Editing PPP Parameters IPX Remote Node Number None Any valid IPX node number Specifies the IPX node number the peer router should use This interface includes this IPX remote node number in NCP negotiations If you want to specify an IPX node number for the peer router enter it here If this interface has been up and running you must also set the IPX Enable parameter to Disable click on Apply and then reset the IPX Enable parameter to Enable to implement your changes 1 3 6 1 4 1 18 3 5 9 2 2 1 26 Remote AppleTalk Node None Any valid AppleTalk node number Specifies the AppleTalk node nu
50. lation of what the response should be If the values match it sends a success message and the LCP establishes the link CHAP uses an incrementally changing identifier and a variable challenge value to provide network security It also allows for repeated challenges at intervals that either router on a link can specify A router may transmit challenge packets not only during the link establishment phase but also at any time during the network layer protocol phase to ensure that the connection retains its integrity If CHAP fails the network administrator must change the identifiers and secret on both peer routers and disable and re enable LCP to reinitialize the line Note For all dial services you must use PAP or CHAP either of which provides an identification mechanism that is essential to bring up bandwidth on demand dial on demand and dial backup lines In addition for all dial services failure of either authentication protocol causes the connection to be dropped and no intervention from the network administrator is needed Configuring PPP Services Establishing Network Connections PPP uses various network control protocols to determine the values of parameters during the final phase of PPP initialization network layer negotiations Like the LCP each network control protocol allows peer routers to negotiate various network options over the data link by transmitting Configure Request Configure ACK Configure NAK and Confi
51. le Loess Hax Conf iqgure Requests Kee Terminate Request Figure 4 3 PPP Line Lists Window 4 16 Editing PPP Parameters Select the PPP line that you want to edit Edit those line parameters that you want to change referring to the descriptions following this procedure for guidelines If you change any of the following parameters you must force LCP renegotiation on the interface for your changes to take effect e Echo Reply Acceptable Loss e Max Configure Requests e Max Terminate Requests e Max Configuration Failure Count e Local Authentication Protocol e Local PAP ID e Local PAP Password e Remote PAP ID e Remote PAP Password e Link Quality Protocol e Peer Link Quality Report Timer e LQR Reporting Period e CHAP Secret e CHAP Local Name e CHAP Periodic Timer You must disable and then re enable the corresponding network control protocol to implement your changes Therefore after making all your changes to any of the parameters listed in the previous steps but before proceeding to Step 5 do the following a Set the Enable LCP parameter to Disable b Click on Apply c Reset the Enable LCP parameter to Enable Click on Apply to implement your changes Click on Done to exit the window 4 17 Configuring PPP Services PPP Line Parameter Descriptions Use the following guidelines to configure the parameters in the PPP Line Lists window Parameter Default Options Function
52. materials related to such distribution and use acknowledge that such portions of the software were developed by the University of California Berkeley The name 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 Bay Networks Software License Note This is Bay Networks basic license document In the absence of a software license agreement specifying varying terms this license or the license included with the particular product shall govern licensee s use of Bay Networks software This Software License shall govern the licensing of all software provided to licensee by Bay Networks Software Bay Networks will provide licensee with Software in machine readable form and related documentation Documentation The Software provided under this license is proprietary to Bay Networks and to third parties from whom Bay Networks has acquired license rights Bay Networks will
53. mber the peer router should use This interface includes this AppleTalk node number in NCP negotiations If you want to specify an AppleTalk node number for the peer router enter it here If this interface has been up and running you must also set the AppleTalk Enable parameter to Disable click on Apply and then reset the AppleTalk Enable parameter to Enable to implement your changes 1 3 6 1 4 1 18 3 5 9 2 2 1 36 Configuring PPP Services Parameter Default Options Function Instructions MIB Object ID Parameter Default Options Function Instructions MIB Object ID AppleTalk Routing Protocol RTMP RTMP Routing Table Maintenance Protocol Specifies the AppleTalk routing update protocol that this interface wants the peer router to use This interface specifies AppleTalk RTMP as the routing update protocol in NCP negotiations Accept the default RTMP 1 3 6 1 4 1 18 3 5 9 2 2 1 38 Bridge Ethernet Enable Enable Disable Specifies whether this PPP interface accepts bridged traffic that is Ethernet encapsulated then forwards it over the PPP network Set to Disable if you do not want the PPP interface to accept bridged Ethernet encapsulated frames If this interface has been up and running you must also set the Bridge Enable parameter to Disable click on Apply and then reset the Bridge Enable parameter to Enable to implement your changes 1 3 6 1 4 1 18 3 5 9 2 2 1 40 4 12 Pa
54. nd Version 10 0 routers support a new implementation of PPP The new implementation complies with the established requirements of the following Internet RFCs 1332 1333 1334 1378 1552 1638 1661 1662 1762 1763 and 1764 Version 10 0 routers also support the multilink feature described in RFC 1717 With the different implementations of PPP each adhering to a different set of RFCs the following functions will not work between a Version 5 x and a Version 9 x or Version 10 0 router e Link Quality Monitoring LQM e Source routing over Token Ring networks For communication over a synchronous line between a Version 5 x and a Version 9 x or Version 10 0 router each running PPP make the following configuration checks e On the Version 9 x or Version 10 0 router The type of synchronous line service MIB object ID 1 3 6 1 4 1 18 3 4 5 1 18 wfSyncService must have a value of Transparent This is the default setting for the Service parameter in the Edit Sync Parameters window To access the parameter through the Configuration Manager click on the appropriate sync connector and select Edit Line Details e On the Version 5 x router The LQM Time parameter must have a value of 0 which disables Link Quality Monitoring on the Version 5 x router 2 9 Configuring PPP Services The Quality of Service parameter must have a value of LLC1 the default setting For information on how to check these Version 5 x param
55. ng Protocol DECnet Phase IV Control None Protocol DNCP OSI Network Layer Control None Protocol OSINLCP Xerox Network System Control None Protocol XNSCP VINES Network Control None Protocol VNCP Bridge Network Control Protocol BNCP MAC Type Selection Routing over a PPP Link You can enable the following protocols over PPP interfaces AppleTalk DECnet Phase IV Internet Packet Exchange IPX Internet Protocol IP Open Systems Interconnection OSI Virtual Networking System VINES Xerox Network System XNS Configuring PPP Services Transparent Translation Bridge and Source Routing Bridge are other routing media that you can enable over any PPP interface The PPP bridge accepts incoming traffic from any media Ethernet FDDI Token Ring and forwards data transparently or translates when necessary Initializing a PPP Interface PPP creates an interface between peer routers to allow them to exchange data The routers initialize the interface in three phases 1 Link establishment 2 Authentication 3 Network layer protocol negotiations The following sections describe each phase Establishing the PPP Link PPP s Link Control Protocol LCP helps establish a link LCP generates three types of packets Link configuration packets including Configure Request Configure ACK Configure NAK and Configure Reject packets e Link termination packets including Termin
56. not grant any Software license whatsoever either explicitly or implicitly except by acceptance of an order for either Software or for a Bay Networks product Equipment that is packaged with Software Each such license is subject to the following restrictions 1 Upon delivery of the Software Bay Networks grants to licensee a personal nontransferable nonexclusive license to use the Software with the Equipment with which or for which it was originally acquired including use at any of licensee s facilities to which the Equipment may be transferred for the useful life of the Equipment unless earlier terminated by default or cancellation Use of the Software shall be limited to such Equipment and to such facility Software which is licensed for use on hardware not offered by Bay Networks is not subject to restricted use on any Equipment however unless otherwise specified on the Documentation each licensed copy of such Software may only be installed on one hardware item at any time Licensee may use the Software with backup Equipment only if the Equipment with which or for which it was acquired is inoperative Licensee may make a single copy of the Software but not firmware for safekeeping archives or backup purposes Licensee may modify Software but not firmware or combine it with other software subject to the provision that those portions of the resulting software which incorporate Software are subject to the restrictions of th
57. nstructions MIB Object ID PPP Mode Multilink for a demand or bandwidth on demand circuit Normal for a nonmultilink circuit Multilink Monitor for a demand or bandwidth on demand circuit Normal Multilink for all other circuit types Specifies the type of multiline or multilink connection on this interface The set of available options depends on the type of circuit you ve configured Accept the default or choose one of the following values depending on what options are available for the circuit you re configuring Select Normal for a nonmultilink circuit Select Multilink to enable the multilink feature Select Monitor to designate the local router as the multilink monitor 1 3 6 1 4 1 18 3 5 9 2 2 1 50 Max Links 4 links 1 to 4 This parameter is active only for multilink It specifies the maximum number of links both leased and switched lines allowed in the multilink bundle for this circuit at any one time Accept the default 4 or enter a value in the range 1 to 4 If this is not a multilink circuit leave this parameter blank 1 3 6 1 4 1 18 3 5 9 2 2 1 58 4 14 Parameter Default Range Function Instructions MIB Object ID Editing PPP Parameters Max Buffers 30 buffers 10 to 60 buffers This parameter is active only for multilink It specifies the maximum allowable number of buffers stored by multilink for this circuit The choice depends on the amount of memory available for
58. nvnnnnrrnnnnnvnnrrrrennnnrnerenr A 3 Table B 1 PPP Statistics eet Hadas dee D EE EE B 1 Audience About This Guide If you are responsible for configuring and managing Bay Networks routers and or BNX switching platforms running over Point to Point links you need to read this guide This guide describes Point to Point Protocol PPP services and provides instructions for using Site Manager to configure PPP parameters for your network Refer to this guide for e An overview of Point to Point Protocol services Chapter 1 Information on the Bay Networks implementation of PPP services Chapter 2 e Instructions on enabling PPP Chapter 3 e Descriptions of PPP parameters and how to edit those parameters Chapter 4 e Default parameter settings Appendix A e PPP Statistics Appendix B See Configuring Routers or Configuring Customer Access BNX Software depending on your platform for information and instructions about the following topics e Initially configuring and saving a WAN interface e Retrieving a configuration file e Rebooting the device with a configuration file Written for system and network managers this guide describes how to configure the Bay Networks implementation of PPP interfaces and how to use the Site Manager tool to manage your environment xi Configuring PPP Services Software Suites Routing and Switching software is available in the following suites e The System Suite includ
59. op VINES traffic from being routed over this interface set this parameter to Disable 1 3 6 1 4 1 18 3 5 9 2 2 1 19 CCP Enable If you enable data compression on this interface Site Manager automatically sets this parameter to Enable Otherwise the default is Disable Enable Disable Enables or disables data compression This parameter does not enable or disable data compression for the interface However disabling the Compression Control Protocol CCP stops data compression over this interface To stop compression over this interface set this parameter to Disable 1 3 6 1 4 1 18 3 5 9 2 2 1 49 4 9 Configuring PPP Services Parameter Default Options Function Instructions MIB Object ID Parameter Default Options Function Instructions MIB Object ID Remote IP Address 0 0 0 0 Any valid IP address Specifies the IP address the peer router should use This interface includes this IP address in NCP negotiations If you want to specify an IP address for the peer router enter it here If this interface has been up and running you must also set the IP Enable parameter to Disable click on Apply and then reset the IP Enable parameter to Enable to implement your changes 1 3 6 1 4 1 18 3 5 9 2 2 1 22 IPX Network Number None Any valid unique unreserved network number This number must be a string of up to eight hexadecimal characters Oxffffffff is invalid Specifies a networ
60. rameter Default Options Function Instructions MIB Object ID Parameter Default Options Function Instructions MIB Object ID Editing PPP Parameters Bridge FDDI Enable Enable Disable Specifies whether this PPP interface accepts bridged traffic that is FDDI encapsulated then forwards it over the PPP network Set to Disable to refuse bridged FDDI encapsulated frames on this PPP interface If this interface has been up and running you must also set the Bridge Enable parameter to Disable click on Apply and then reset the Bridge Enable parameter to Enable to implement your changes 1 3 6 1 4 1 18 3 5 9 2 2 1 42 Bridge Token Ring Enable Enable Disable Specifies whether this PPP interface accepts bridged traffic that is Token Ring encapsulated then forwards it over the PPP network The Token Ring network must support source routing the router expects all Token Ring bridged frames to be source routed Set to Disable if you do not want the PPP interface to accept bridged Token Ring encapsulated frames If this interface has been up and running you must also set the Bridge Enable parameter to Disable click on Apply and then reset the Bridge Enable parameter to Enable to implement your changes 1 3 6 1 4 1 18 3 5 9 2 2 1 44 4 13 Configuring PPP Services Parameter Default Options Function Instructions MIB Object ID Parameter Default Range Function I
61. rk control protocols to connect peer routers PPP also allows peer routers to negotiate and determine data link and network layer options Table 1 1 and Table 1 2 When negotiations complete successfully PPP encapsulates the data and transmits it over the link Table 1 1 Data Link Control Protocol Options Option Function Maximum Receive Unit Specifies the Maximum Transmission Unit MTU size for the line Authentication Protocol Password Authentication Protocol PAP or Challenge Handshake Authentication Protocol CHAP Imposes network security by requiring an authentication process PAP ID or CHAP Local Name Text string that identifies the caller for bandwidth on demand dial on demand and dial backup lines Link Quality Protocol Enables or disables link quality monitoring and reporting Multilink Endpoint Discriminator Enables the PPP mulitlink protocol and specifies the identity of the sender of the option Table 1 2 PPP Overview Network Control Protocols and Options Protocol Negotiable Options IP Control Protocol IPCP IP Addresses for backward compatibility IP Address default Internet Packet Exchange Control Protocol IPXCP IPX Network Number IPX Node Number IPX Routing Protocol IPX Router Name IPX Configuration Complete AppleTalk Control Protocol ATCP AppleTalk Network Number AppleTalk Node Number AppleTalk Routi
62. rol High speed serial interface Internet Protocol IP Control Protocol Internet Packet Exchange IPX Control Protocol Local Area Network Link Control Protocol Link Quality Monitoring Link Quality Report Media Access Control Management Information Base Maximum Transmission Unit Network Control Protocol Open Systems Interconnection OSI Network Layer Control Protocol Password Authentication Protocol xvi RFC SMDS SNMP TCP IP TFTP VINES VNCP WAN XNS XNSCP About This Guide Request for Comment Switched Multimegabit Data Service Simple Network Management Protocol Transmission Control Protocol Internet Protocol Trivial File Transfer Protocol Virtual Networking System VINES Network Control Protocol Wide Area Network Xerox Network System Xerox Network System Control Protocol xvii Chapter 1 PPP Overview Point to Point Protocol PPP is a standard method of routing or bridging datagrams between peer routers or other devices over serial point to point links Figure 1 1 LAN LAN Router Router Synchronous Line Figure 1 1 Point to Point Network Connection PPP serves three major functions e Data link layer connection and management e Network layer connection and management e Datagram encapsulation Configuring PPP Services PPP uses a suite of data link and netwo
63. rt 2 2 synchronous line parameters 2 8 T Technician Interface statistics B 1 Token Ring networks incompatibilities 2 9 V Versions 5 x 7 x 8 x and 9 x router software 2 9 VINES Enable parameter 4 9 default setting A 2 VINES Network Control Protocol 1 3 W WAN Protocol synchronous line parameter 2 8 World Wide Web Bay Networks Home Page on xiv X Xerox Network System Control Protocol XNSCP 1 3 XNS Enable parameter 4 6 default setting A 1 Index 5
64. s forum contains libraries of technical and product documents designed to help you manage and troubleshoot your Bay Networks products Software agents and patches are available and the message boards are monitored by technical staff and can be a source for problem solving and shared experiences Customers and resellers holding Bay Networks service contracts can visit the special libraries to acquire advanced levels of support documentation and software To open an account and receive a local dial up number call CompuServe at 1 800 524 3388 and ask for Representative No 591 xiii Configuring PPP Services InfoFACTS e Inthe United Kingdom call Freephone 0800 289378 In Germany call 0130 37 32 In Europe except for the United Kingdom and Germany call 44 272 760681 e Outside the U S Canada and Europe call 614 529 1349 and ask for Representative No 591 or consult your listings for an office near you Once you are online you can reach our forum by typing the command GO BAYNETWORKS at any prompt InfoFACTS is the Bay Networks free 24 hour fax on demand service This automated system contains libraries of technical and product documents designed to help you manage and troubleshoot your Bay Networks products The system can return a fax copy to the caller or to a third party within minutes of being accessed World Wide Web The World Wide Web WWW is a global information system for file distribution and onl
65. s not have PAP enabled ignore this field If the remote peer has PAP enabled specify the remote PAP ID that identifies the remote peer To implement your changes set the Enable LCP parameter to Disable click on Apply and then reset the parameter to Enable Note For dial services that use PAP you must configure remote PAP ID through the Dial menu See Configuring Dial Services for details 1 3 6 1 4 1 18 3 5 9 2 1 1 19 4 24 Parameter Default Options Function Instructions Editing PPP Parameters Remote PAP Password None Any text string maximum 25 characters Specifies the PAP password assigned to the remote peer router During the interface s authentication phase this interface must include the correct Remote PAP Password in all Password Authenticate Request messages it sends to the peer router Otherwise the peer router sends an Authenticate NAK message and the link is not created If the remote peer does not have PAP enabled ignore this field If the remote peer has PAP enabled specify the remote PAP password that identifies the remote peer To implement your changes set the Enable LCP parameter to Disable click on Apply and then reset the parameter to Enable Note For all dial services you must configure Local PAP ID through the Dial menu See Configuring Dial Services for details MIB Object ID Parameter Default Options Function Instructions MIB Object ID 1 3 6 1
66. sed fault tolerance and greater bandwidth between two sites Refer to the section Differences between Multiline and Multilink on page 2 7 for a comparison of these features For more information about the Bay Networks multiline feature see Configuring Line Services For information on configuring PPP Multiline over HSSI interfaces within the BNX environment refer to Configuring Customer Access BNX Software PPP Multilink Note BNX software does not support the PPP multilink feature If you use BNX ignore this and the following four sections The multilink feature of PPP provides capabilities beyond those of multiline circuits The major characteristics of multilink include the ability to e Use lines that have different speeds proportionally distributing traffic over those lines e Balance traffic load and maintain packet sequence e Use switched lines such as ISDN B channels as well as leased lines e Monitor traffic volume Configurations with bandwidth on demand which can activate additional lines in response to increased traffic can find these features particularly useful Multilink is available on the following platforms e BLN BCN e LN CN e AFN A AN e ASN 2 3 Configuring PPP Services Using PPP Multilink The routers at each end of a PPP link that is a logical communications line are called peers A link is an individual communication channel between two peers Typical links
67. terface Set the Enable LCP parameter to Disable click on Apply and then reset the parameter to Enable To enable Challenge Handshake Authentication Protocol select CHAP Then do the following Define the CHAP Secret CHAP Local Name and CHAP Periodic Timer parameters for this interface Find these parameters by scrolling further through the list of line parameters Set the Enable LCP parameter to Disable click on Apply and then reset the parameter to Enable 1 3 6 1 4 1 18 3 5 9 2 1 1 15 4 21 Configuring PPP Services MIB Object ID Parameter Default Options Function Instructions Local PAP ID None Any text string maximum 25 characters Specifies the PAP ID assigned to this interface During the interface s authentication phase all Password Authenticate Request messages the peer router sends to this interface must include the correct PAP ID Otherwise the interface sends an Authenticate NAK message and the link is not created If you have not enabled PAP ignore this field If you set the Local Authentication Protocol to PASSAUTH specify a unique local PAP ID for this interface To implement your changes set the Enable LCP parameter to Disable click on Apply and then reset the parameter to Enable Note For dial services that use PAP you must configure the local PAP ID through the Dial menu See Configuring Dial Services for details 1 3 6 1 4 1 18 3 5 9 2 1 1 17
68. tistics on the active multilink circuits connecting two peers To do this you must use the Technician Interface to enable the wfPppMIStatsCalcPercent parameter in the wfPppMIStatsEntry MIB When you enable this feature the router calculates the percentage of data successfully received per line By default this parameter is set to disabled The Active Circuit parameter wfPppLineActiveCct in the wfPppLineEntry MIB shows the actual PPP circuit associated with each line The purpose of this parameter is to easily extract the line numbers within a given multilink circuit and vice versa For all line types the default value of wfPppLineActiveCct is Oxffff equivalent to a value of 1 The actual value depends on whether the line is leased or switched e Fora leased line the parameter wfPppLineActiveCct always shows the correct active circuit number e For an active up switched line this parameter contains the actual circuit associated with the line This applies to dial on demand dial backup bandwidth on demand and demand groups When a switched line is brought down this parameter reverts to the default value After you enable w PppMIStatsCalcPercent the router requires some transient time before the percentage readings are accurate that is it must collect sufficient data and do the calculations based on that data The time required for accurate calculations depends on a variety of factors including the line speed and the amount of
69. tocol prioritization The ability to prioritize traffic is important because some types of operations require faster responses than other types For example PPP control messages must have precedence over other types of data When you select PPP on a circuit Site Manager automatically enables protocol prioritization without specifying any filters With the multiline feature you can configure both priorities and filters For more information about protocol prioritization see Configuring Traffic Filters and Protocol Prioritization 2 6 Implementation Notes The multilink feature uses the automatically enabled functions of protocol prioritization but only for interrupt queuing You cannot specify either traffic filters or priorities Multilink assigns the highest that is interrupt level priority to link control packets treating all other traffic as normal priority This gives PPP control messages precedence over other types of data while preserving the packet sequencing Differences between Multi ine and Multilink Both multiline and multilink use circuits consisting of one or more data paths between two peer routers Each has its special characteristics and advantages described in the following paragraphs and summarized in Table 2 1 Table 2 1 Comparing Multiline and PPP Multilink Feature Multiline PPP Multilink Advantages e Fault tolerance e Fault tolerance e Bandwidth availability e Bandwidth ava
70. ts 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 Trademarks of Bay Networks Inc ACE AFN BCN BLN BN CN FRE LN Optivity SynOptics SynOptics Communications Wellfleet and the Wellfleet logo are registered trademarks and AN ANH ASN BaySIS BayStack BCNX BLNX BNX EZ Internetwork EZ LAN FN PathMan PhonePlus PPX Quick2Config RouterMan SPEX Bay Networks Bay Networks Press the Bay Networks logo and the SynOptics logo are trademarks of Bay Networks Inc Third Party Trademarks All other trademarks and registered trademarks are the property of their respective owners 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 are 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
71. tting help D data compression 2 1 enabling on PPP interface 4 9 data link control protocols authentication 1 2 1 7 maximum receive unit 1 2 quality protocol 1 2 datagram encapsulation 1 8 DECnet IV Enable parameter 4 7 default setting A 1 DECnet Phase IV Control Protocol 1 3 defaults for interface parameters A 1 for line parameters A 3 deleting PPP globally 4 30 dial backup 1 2 2 2 4 28 dial services 2 2 identification mechanism 1 2 1 7 PPP support 2 2 dial on demand 1 2 2 2 4 28 implementation notes 2 6 dial up line PPP support 2 2 E Echo Reply Acceptable Loss parameter 4 19 default setting A 3 editing parameters interface 4 2 line 4 15 Enable LCP parameter 4 18 default setting A 3 Enable PAP Fallback parameter 4 25 default setting A 3 encapsulation 1 8 F frame structure 1 8 G getting help from a Bay Networks Technical Response Center xiv through CompuServe xiii through InfoFACTS service xiv through World Wide Web xiv implementation notes dial on demand 2 6 Inbound Link Quality parameter 4 27 default setting A 3 incompatibilities 2 9 InfoFACTS service xiv interface initialization phases 1 4 Interface parameters 4 5 interface parameters editing 4 2 IP Enable parameter 4 5 default setting A 1 IP enabling on a PPP interface 2 10 Index 2 IPX Enable parameter 4 8 default setting A 1 IPX Network Number parameter 4 10 default setting A 2 IPX Remote Node Number par
72. u can have more than one multilink bundle active between two peer routers Each bundle is a separate circuit that is a separate logical connection You cannot share links between circuits Once you have configured a circuit for multilink or bandwidth on demand operation it always uses PPP multilink encapsulation All lines in a circuit must negotiate and perform multilink You cannot pair non multilink lines with multilink lines in a circuit Multilink can resequence packets sent over different lines of the link but Version 10 0 does not support packet fragmentation and reassembly You can use the multilink feature over the following physical media e V35 e MCTI MCEI e ISDN B channel drivers e Raise DTR modems V 25bis modems Compatibility with Previous Versions A multilink circuit using PPP cannot communicate with a router running a version earlier than 9 0 because pre 9 0x versions use a multiline circuit in which LCP is run on only one line In this situation therefore you must use uniline PPP Balancing Traffic Loads In a configuration with multilink enabled a sending router divides the outbound traffic among all the lines in the bundle keeping each packet intact The configured external clock speed of each line determines the proportion of the total traffic each receives For example pairing a 9600 bit second line with an ISDN B channel yields a clock speed ratio of roughly 1 6 8 That is for every packet sent over the
73. vices bandwidth on demand dial on demand and dial backup For information on how to configure bandwidth on demand dial on demand and dial backup lines see Configuring Dial Services Bandwidth on Demand Bandwidth on demand uses secondary dial up lines to augment a primary leased line or lines or an initial dial on demand line when the primary line experiences congestion Congestion occurs when traffic volume exceeds the configured congestion threshold Bandwidth on demand brings up these secondary lines one at a time as needed up to a maximum of four lines including the primary lines When congestion abates the secondary lines become inactive Dial on Demand Dial Backup Dial on demand enables you to establish a circuit on demand as opposed to having a leased line connection which is always available By using a circuit on a demand basis you can have a network connection only when you need it and significantly reduce your line costs If a primary PPP Frame Relay or standard line fails and you have enabled dial backup the router automatically establishes a backup line and data transmission continues 2 2 Implementation Notes PPP Multiline Bay Networks PPP services include support for the multiline feature which lets you configure a single circuit that consists of one or more WAN data paths A data path is a logical point to point channel that is a permanent leased line Multiline provides both increa
74. window Note In BNX software environments only the IP Enable parameter is meaningful In the BNX environment ignore all other PPP interface parameters Parameter IP Enable Default If you enable IP support on this interface Site Manager automatically sets this parameter to Enable Otherwise the default is Disable Options Enable Disable Function Enables or disables the network control protocol for IP This parameter does not enable or disable IP routing services for the interface it affects the network control protocol for IP However disabling the network control protocol for IP stops IP traffic from being routed over this interface Instructions To stop IP traffic from being routed over this interface set this parameter MIB Object ID to Disable 1 3 6 1 4 1 18 3 5 9 2 2 1 12 4 5 Configuring PPP Services Parameter Default Options Function Instructions MIB Object ID Parameter Default Options Function Instructions MIB Object ID OSI Enable If you enable Open Systems Interconnect OSI support on this interface Site Manager automatically sets this parameter to Enable Otherwise the default is Disable Enable Disable Enables or disables the network control protocol for OSI This parameter does not enable or disable OSI routing services for the interface it affects the network control protocol for OSI However disabling the network control protocol for OSI stops O

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