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Fluke Network Tester Network Card User Manual

1. Contents continued 3 AutoTest gitgero eji E RUNNING Auto Tz rc Cable Test ResLiltS 2 2 SEE SE se oc docto Eer Cable Length Opens Shorts and Splits nc ee Single Ended AutoTest Results Network Drop EE idinaan iaaii r ei iieiea Network Device Inline AutoTest Results Inline between a Device and ibehetwork eise ees ee eek ee ee ee RE Re ee ee ee RE ee Inline between a POE Powered Device and the Network 4 Troubleshooting a Network Device Unie te AE AE EE RE EE EE RE EE EE N Verifying a Device s ConfiguratiON esse esse ee ee ee ee ee AA ee Re ge ee Viewing Link Status Information Checking Frames for Errors Tracking ProtOCol ME ME RE EE EE ER N Obtaining a Device s IP Address Information Identifying Network Resources 5 Troubleshooting Networks tele c EE Finding Out About Your Network Identifying the Network Type Identifying Key Devices iii NetTool Users Manual Assigning an IP Address to NetTool iese ee ee Re Re ee eme Pinging a Single Device iese ee Re ee Re ee RA ee RA enne nennen Pinging Multiple Devices iese sees ee Re Ge ee ee ee ee Ge ee ee ee ee nnne nnne 6 Common Problems s see ee ee ecce RAAR AA ee AA ee asa raa ee ee Gee ee liggen RR RE RE EE N EE ER EE EE iets Displaying the Problem Log ees ee iese ee Re ee ee Ge ee ee Ge ee ee nennen nnne nnne Understanding the Problem Log Display
2. As you become more familiar with using the log you will learn which icon is associated with a Problem Categorized by three levels of severity particular type of problem Severity Low Medium High Problems are also categorized by severity A single Problem ID A unique identifier that enables you to exclamation mark 1 indicates a low level of severity reference the problem while two 11 and three 111 exclamation marks indicate a moderate and high level of severity respectively Problem Text problem Each problem listed has a unique problem ID and a short description of the problem that was found Things to Consider You can think of problems fitting into one of two categories link connectivity or network Link connectivity problems relate to cabling or cabling properties while network problems involve PC network configuration settings or PC to server interactions Generally you encounter network problems while setting up or changing a PC s connection to the network These types of problems can often be resolved by checking the network settings on the PC With a single ended connection NetTool can only report Unwanted Protocols and link connectivity level problems An inline connection is required for all other problems The different types of connections are discussed in Chapter 2 NetTool enables you to see on which side the problem exists that is whether it is a problem between the PC and NetTool or
3. Serial Port Connection in Chapter 2 then transfer the files from the PC to the tester Chapter 2 Setting Up and Connecting NetTool Introduction This chapter shows you how to set up NetTool Among the tasks covered are how to set NetTool s date and time how to configure its IP address information and how to locate important information such as the serial number This chapter also shows you how to make a single ended connection and an inline connection between NetTool and a network device Configuring NetTool To configure NetTool select the NetTool icon iil The NetTool menu is displayed Ka 4E Ping List Editor 9 Language H About HetTaol afq59s bmp Figure 2 1 NetTool Menu Use this menu to access the tester s setup menus which are described in the following sections 2 1 NetTool Users Manual Changing the System Settings Select Settings to display the Settings menu Br A Settings sd ram O Meters e Auto Off Contrast d Set Time 16 26 06 Set Date 68 1364 Restore Defaults afq42s bmp Figure 2 2 Settings Menu On this menu you can do the following 2 2 Check the battery level If NetTool is running on battery power the battery level indicator saak is displayed at the top of every Setup screen Select a unit of measurement Feet or Meters Enable disable the Auto Off feature When Auto Off is enabled NetTool automatically turns itself off if no key is pressed afte
4. This mismatch prevents connection to the network Remedy Reconfigure the devices so the duplex settings match Problem Polarity reversed Explanation The polarity of the detected link pulse is reversed Remedy This is most likely due to a reversed pair Check cabling to ensure that the pairing is correct Problem Level low Explanation The link pulse detected from a device is low This can negatively affect performance Remedy Replace the NIC card or change the hub switch ports This problem can also be caused by excessive cable attenuation Problem Transmit pair open Explanation The wire pair used to transmit 1 2 or 3 6 has an open This problem prevents connection to the network Remedy Isolate the cable and replace it Network Problems This section lists all of the network problems Keep in mind that this is not an exhaustive list of troubleshooting steps If you know what you need the network administrator for the network you are troubleshooting can provide you with a lot of information to correct these problems Health Problems Problem Short Frames received also jabber F CS Explanation A short frame is a frame that is smaller than the minimum legal size less than 64 bytes after the preamble with a good frame check sequence Jabber is defined as frames longer than the maximum legal size greater than 1518 bytes Frame Check Sequence FCS Bad means that the header information is probably c
5. the PC you are using must be enabled to communicate properly with NetTool Before you begin make sure that you install and start NetTool Blaster and NetTool Toolkit These programs are found on the CD that is packaged with NetTool See Installing and Running the Link Utilities in Chapter 1 for instructions NetTool Users Manual Creating a Report Reporter enables you to create a report that reflects what NetTool currently detects on the PC or another device and or the network To create a report 1 Connect NetTool to the device you want to check and run AutoTest 2 From the Main menu select ToolKit 3 Move the cursor to Reporter then press SELECT to display the Reporter Menu Er Reporter Men xx Delete All Reports 1 5 2 E Le empty 3 empty d Cemptuz 5 empty afq52s bmp Figure 8 1 Reporter Menu 8 2 Move the cursor to an empty slot Then press SELECT to display a screen similar to that shown in Figure 8 2 Save Report Delete Report afq53s bmp Figure 8 2 Save Report Screen To supply a name for the report Note You can use up to 20 alphanumeric characters for the report name Characters include spaces and special symbols such as the period and pound sign a Move the cursor to the Comment field Press the Up or Down A arrow key to supply value in the first position b Press the Right arrow key to move to the next position and supply a
6. Log includes a listing of all problems that NetTool detected from the physical layer to application layer Not every problem contained in this log is at the same level of severity therefore just because a problem is listed here does not imply that it is a catastrophic one For example Unwanted Protocols are included in this log but they are not a major impediment to the operation of a PC on the network This chapter shows you how to access the Problem Log and lists the problems that NetTool detects Possible causes and remedies for the problems are provided Chapter 6 Common Problems Displaying the Problem Log To display the Problem Log From the Main menu select Problems as shown in Figure 6 1 mm Protocols El Key Devices 52 tit Toolkit afqi8s bmp Figure 6 1 Main Menu Showing Problems Selected NetTool Users Manual The Problem Log Figure 6 2 is displayed Table 6 1 lists the types of problems you can see and their associated icons Problem log Ei E n 444 3 58 Table 6 1 Elements of the Problem Log REECH afq60s bmp Type of i rm Connectivity Figure 6 2 Problem Log em Il Link JI Unable to connect to Dns servers IP 123 196 126 014 Understanding the Problem Log Display A Configuration There are nine types of problems listed in the Problem ET Network Log Each type of problem has an icon associated with it For example a stethoscope 2 is used to identify health related problems
7. Manual Topology Topology is the organization of network components The topology of Token Ring network components is a ring Transport Transport refers to the physical method by which data is transmitted e g Ethernet Token Ring etc Different physical network hardware and cable layout are required for different transports Transceiver In Ethernet networks a transceiver is used to couple electrical signals to and from an adapter to the transmission media In ThinLAN and 10BASE T networks the transceiver is integrated directly onto the network adapter card Twisted Pair A pair of wires that is twisted together to minimize crosstalk Crosstalk is minimized with twisted pair wiring by canceling the magnetic fields generated in each of the twisted wires Twisted pair cable UTP or STP is typically made up of several twisted pairs of wires Uptime The amount of uninterrupted time that a resource such as a print server has been available UTP Unshielded Twisted Pair Cable that is twisted by pairs but not shielded This minimizes crosstalk by canceling the magnetic fields generated in each of the twisted wires but only when a single twisted pair is used for Transmit or Receive VoIP Voice over Internet Protocol The technology used to transmit voice conversations over a data network using the Internet Protocol A AC adapter 1 9 accessories optional Addresses Used screen 4 6 AutoTest 3 1 cab
8. entails having NetTool simultaneously plugged in between two network devices such between as a PC or a PoE powered device and a network switch Use this type of connection to verify whether the device can communicate properly with the network Caution When operating inline with a POE powered device connected to NetTool make sure that NetTool is not plugged into the AC adapter or into a serial device that is grounded or damage may occur to the equipment To make an inline connection refer to Figure 2 6 and do the following 1 Plug one end of the supplied RJ 45 cable into the device Plug the other end of the cable into either RJ 45 jack on NetTool Setting Up and Connecting NetTool 2 Connecting NetTool 2 Plug a second RJ 45 cable into the network Plug the other end of the cable into the available RJ 45 jack on NetTool ahn312f eps Figure 2 6 Inline Connection between a PC and the Network Note NetTool must sense traffic on the network or the device so that it can supply protocol or health information You can now run AutoTest see Running AutoTest in Chapter 3 2 7 NetTool Users Manual Serial Port Connection Note The recommended speed setting for the serial port is 115200 A serial port connection enables you to Download software see Updating the Software Enable options Save screens Upload and download PING catalogs Upload Report data Use the Link Uti
9. following ranges of utilization e Green network utilization levels are below 40 96 e Yellow network utilization levels are between 40 96 and 70 96 e Red network utilization levels are greater than 70 96 NetTool Menus NetTool has an icon and menu driven user interface lcons The top area Figure 1 4 contains a connection diagram This diagram contains icons that show what type of device is connected to NetTool s RJ 45 jacks ahn020s eps Figure 1 4 NetTool Icons NetTool s device icons are listed in Table 1 1 By moving the cursor to an icon and then selecting it you can drill down to find out more information about the device Introduction Getting Acquainted 1 Table 1 1 NetTool s Device Icons Icon Menu EZ gt Network gt NetTool Setup m Station 4 Main Menu NetTool s Main menu is located under the connection diagram From this menu you can access the following Note To display these screens move the cursor to the menu item then press SELECT e Problems displays the Problem Log which lists all problems detected from the physical layer to the application layer See Chapter 6 Common Problems for details e Protocols displays all of the protocols that NetTool sees on the desktop or on the network 1 7 NetTool Users Manual e Key Devices displays all of the servers routers and printers that NetTool finds on the network e Tool
10. is NetTool Service and Adjustment Service and adjustment of NetTool should be performed by trained Fluke Networks service personnel only If you experience a problem with the tester visit the Fluke Networks website at http www flukenetworks com NetTool send email to support flukenetworks com or contact your nearest Fluke Networks Service Center to report the problem see Contacting Fluke Networks for a list of telephone numbers If the tester requires repair service center personnel will provide you with shipping information and repair prices If the tester is covered under warranty it will be promptly repaired or replaced at Fluke Networks option and returned to you postage paid at no charge See the registration card for warranty terms If the warranty has lapsed Fluke Networks will repair the tester for a fixed fee and return it postage paid to you Registering NetTool Please take the time to register your NetTool Go to the Fluke Networks website at http www flukenetworks com registration to register your tester online 1 3 NetTool Users Manual Contacting Fluke Networks e 1 www flukenetworks com z support flukenetworks com sm d 1 425 446 4519 e Australia 61 2 8850 3333 or 61 3 9329 0244 e Beijing 86 10 6512 3435 e Brazil 11 3044 1277 e Canada 1 800 363 5853 e Europe 44 1923 281 300 e Hong Kong 852 2721 3228 e Japan 81 3 3434 0181 e Korea
11. one protocol into another protocol s format For example in a Novell Ethernet environment there are four different methods to encapsulate IPX in Ethernet 802 3 frames 802 3 raw 802 2 Ethernet II and SNAP Appendices C Ethernet Ethernet is a 10 Mbps topology that runs over thick coax thin coax twisted pair and fiber optic cabling systems EtherTalk EtherTalk is the AppleTalk network protocol running over the Ethernet network transport Fast Ethernet Industry standard terminology for 100Base T Industry groups do not agree on using the term to refer to 100VG AnyLAN some call 100VG AnyLAN a Fast Ethernet technology while others do not FCS Frame Check Sequence A field transmitted in LAN frames that encodes error checking information Frame A frame is a unit of data transmission divided into groups of bits The header and a check sequence form the frame NetTool Users Manual Full Duplex 10Base T and 100Base TX network operation using a switching Hub to establish a point to point connection between LAN nodes that allows simultaneous sending and receiving of data packets Full duplex performance is twice that of half duplex performance A 10Base T full duplex network is capable of 20 Mb s data throughput while a full duplex 100Base TX network is capable of 200 Mb s throughput Half Duplex Network operation is one direction at a time only either sending or receiving data packets but not both at the same t
12. sure that the DHCP server is giving the correct addresses Common Problems 6 Problems NetTool Detects Problem Duplicate IP detected Explanation NetTool has detected a duplicate IP address configured on a remote device You should never have duplicate IPs running on the network This problem prevents the PC from connecting to the network until it is resolved Remedy Identify at least one of the devices and change its address to a valid one that is not being used Host Configuration Problem BootP DHCP server not responding Explanation The PC is dynamically configured to find DHCP servers and none are found Remedy Check the router and the DHCP server itself to make sure that they are running Either could be misconfigured Check connectivity to the DHCP server NetTool Users Manual Problem DHCP server issuing IP address that causes duplicate IP on network Explanation The DHCP server in guestion is not detecting an address and is provisioning a duplicate Remedy This problem can be caused by a statically configured PC Find the statically configured PC on the network and changes its IP address to a valid and unique IP address Merging two unique networks into one can lead to this type of problem The problem can also point to an issue with a DHCP server or an implementation bug Name Resolution 6 8 Problem No DNS server found on network to resolve names Explanation The PC is configured to use D
13. the network NetTool is plugged into do the following 1 Run Autotest see AutoTest in Chapter 3 for details 2 To view details about the network press Network icon Chapter 5 Troubleshooting Networks The Network menu Figure 5 1 is displayed Hetwork X IL Link Config ba Health RES Protocols ii Segment ID ahn200s bmp Figure 5 1 Network Menu NetTool Users Manual Four basic functional groups of information about the network are listed on this menu e Link Config provides link pulse information about the network See Viewing Link Status Information in Chapter 4 for details e Health lets you monitor frames and view errors that indicate problems on the link See Checking Frames for Errors in Chapter 4 for details e Protocols displays the protocols running on the network See Tracking Protocols in Chapter 4 for details e Segment ID tells you what type of network you are plugged into If there are multiple Ethernet drops this screen can help you decide which jack to use for the correct configuration See Identifying the Network Type in this chapter 3 To select an item move the cursor to its name then press SELECT 5 2 Identifying the Network Type To identify the type of network you are connected to select Segment ID to display the Segment ID screen Figure 5 2 ix Segment ID Hame Lisco 3758 ort FastEthernet1 B8 21 tforms cisco Pla WS C3756 24P Hati
14. 3 NetTool Users Manual Typical Cisco Skinny SCCP Call Log Following is a sample SCCP call log Events in the exchange are shown on the left Commentary appears on the right to help you follow the sequencing of the exchange The log captures an entire phone transaction starting with the phone going OFF HOOK CallMgr 129 196 197 244 Call manager IP address OFF HOOK Phone goes off hook Keypad 2 x2002 is dialed Keypad 0 Keypad 0 Keypad 2 PROCEED Call manager acknowledges gt 2000 Blade Lab the two parties in the call lt 2002 RING OUT far end is ringing CONNECTED far end has picked up gt 2000 Blade Lab lt 2002 START MEDIA XMIT media transmission is to start G711 Ulaw64k the CODEC being used Call Setup 104ms the time from CONNECTED to RTP B 4 Typical Cisco Skinny SCCP Call Log continued Appendices Sample VoIP Call Logs B RTP streaming the conversation has started 129 196 197 023 30142 phone 1 IP address and port number VLAN untag TOS 0xb8 phone 1 VLAN and TOS being used 129 196 197 016 20828 phone 2 IP address and port number VLAN untag TOS 0xb8 phone 2 VLAN and TOS being used Call Duration 9 51s the length of the call ON HOOK the phone is hung up gt RTP cnt 475frms phone 1 stats the number of RTP frames Jitter 994us the inter frame arrival jitter Arrival Avg 19ms the average arrival of the frames Min 19ms Max 20
15. 3 host configuration problems 6 7 measurement units changing 2 2 reports creating 8 2 icons used in 1096 2 menus service and adjustment 1 3 link connectivity problems 6 3 closing current screen 1 8 services discovered 3 4 name resolution problems 6 8 eons specifications A 1 NetBIOS problems 6 9 Main 1 7 turning on off 1 5 NetWare problems 6 6 navigating 1 8 NetTool Blaster 1 4 network problems 6 5 paging up down 1 8 NetTool Toolkit 1 4 printer problems scrolling 1 8 Network menu 5 1 TCP IP problems 6 7 meters feet changing 2 2 unwanted protocols problems 6 12 P Web EE N Protocols screen 4 5 patch cable connecting 2 5 NetTool PC NetTool Link Utility Programs 1 4 R accessories optional accessories supplied Ping 5 4 IP address lists creating registering NetTool 1 3 Reporter menu 8 2 Auto Off setting changing 2 2 Ping Catalog screen 5 5 backlight turning on 1 5 pinging a single device 5 4 reports creating and saving 8 2 deleting 8 3 routers discovered 3 4 S scrolling through menus 1 8 Segment ID screen 5 2 SELECT key 1 8 serial port connection 2 8 servers discovered 3 4 Servers Used screen 4 7 single ended connection 2 5 specifications A 1 Station menu 4 1 T telephone numbers Fluke Networks GE A U Unwant
16. 82 2 539 6311 e Singapore 65 6738 5655 e Taiwan 886 2 227 83199 e USA 1 800 283 5853 Visit our website for a complete list of phone numbers 1 4 PC NetTool Link Utility Programs The CD ROM that is packaged with NetTool includes two PC based software utility programs NetTool Blaster and NetTool Toolkit After you install and start these programs select Help for instructions on how to use them NetTool Blaster NetTool Blaster enables you to do the following e Update NetTool click the Update button e Get screen shots download screens by clicking NetTool Blaster s Capture button e Add your own splash screen click the Personalize button e Setthe date and time e Enter a key code if you have purchased options for NetTool click Options e Change the language of NetTool s display screens as translations become available e Setcommunication parameters NetTool Toolkit NetTool Toolkit enables you to e Generate reports e Download reports e Configure PING parameters and catalogs Installing and Running the Link Utilities To install the programs 1 Insert the CD ROM that comes packaged with NetTool into your PC A navigation screen displays 2 Runthe setup program to install both programs 3 Run the link utility programs from the Start Programs Fluke Networks menu Introduction Getting Acquainted Getting Acquainted This section shows you how to turn NetTool on and off and acqu
17. Connecting NetTool 2 Connecting NetTool To connect the wiremap adapter 1 Plug one end of the cable into either RJ 45 jack on NetTool 2 Attach the wiremap adapter supplied to the far end of the cable You can now run AutoTest See Running AutoTest in Chapter 3 Single Ended Connection A single ended connection entails plugging NetTool directly into a wall jack or into a network device such as a printer hub or PC To connect refer to Figures 2 4 and 2 5 and do the following 1 Plug one end of an RJ 45 cable into a wall jack Figure 2 4 or a single network device such as a hub PC server or printer 2 Plug the other end of the cable into either RJ 45 jack on NetTool You can now run AutoTest see Running AutoTest in Chapter 3 2 5 NetTool Users Manual Figure 2 4 shows a single ended connection to a wall jack Figure 2 5 shows NetTool connected to a PC ahn308f eps ahn316f eps Figure 2 4 Single Ended Connection into a Wall Jack Figure 2 5 Single Ended Connection to a PC Use this type of connection when you need to check a Use this type of connection when you want to determine network drop for activity and to find out what services lie whether a PC is properly configured to take advantage of on the other side When connected in similar fashion to a network resources hub or switch NetTool can simulate a PC and perform tests like Ping 2 6 Inline Connection An inline connection
18. FLUKE networks Net Tool Inline Network Tester Users Manual PN 1560821 June 2000 Rev 3 3 05 2000 2005 Fluke Corporation All rights reserved All product names are trademarks of their respective companies LIMITED WARRANTY AND LIMITATION OF LIABILITY Each Fluke Networks product is warranted to be free from defects in material and workmanship under normal use and service The warranty period for the mainframe is one year and begins on the date of purchase Parts accessories product repairs and services are warranted for 90 days unless otherwise stated Ni Cad Ni MH Li lon batteries cables or other peripherals are all considered parts or accessories This warranty extends only to the original buyer or end user customer of a Fluke Networks authorized reseller and does not apply to any product which in Fluke Networks opinion has been misused altered neglected contaminated or damaged by accident or abnormal conditions of operation or handling Fluke Networks warrants that software will operate substantially in accordance with its functional specifications for 90 days and that it has been properly recorded on non defective media Fluke Networks does not warrant that software will be error free or operate without interruption Fluke Networks authorized resellers shall extend this warranty on new and unused products to end user customers only but have no author ity to extend a greater or different warranty on behalf of Fluke Netw
19. IP Monitor RTP RTCP Statistics RTP frm The number of RTP frames RTP drop The number of dropped RTP frames An RTP frame is considered dropped when it does not arrive within 16 frames The difference between the maximum and minimum frame inter arrival time This is an unbuffered measurement of the raw packet arrival times RTP jttr RTP seqEr The number of frames that arrived out of sequence but within the 16 frame drop window RTCP frm The number of RTP frames RTCP drop The number of dropped packets as measured post buffer by the endpoint RTCP jttr The amount of jitter as reported by the endpoint RTCP is an optional control protocol that is sent from the RTP endpoints It contains call quality information as reported by the two RTP endpoints involved in the conversation Chapter 8 Creating and Managing Reports Introduction NetTool s Reporter feature enables you to capture device and network configuration data and save that information in a report You can create and save up to 10 reports Reporter helps you do the following e Document configurations for groups of users for example Customer Service Marketing and Technical Support e Escalate trouble tickets by documenting a problem device e View and print data you gather related to setups moves adds or changes This chapter shows you how to create and manage your reports Before You Begin To take full advantage of Reporter
20. NS Domain Name Server and none can be found Remedy Make sure that the DNS server is up and running Access the PC s network properties and make sure that the settings are correct Problem DNS resolution failed Explanation There are multiple DNS servers on the network and the PC is configured for the wrong one Remedy Find out the correct DNS information Access the PC s network properties and configure the PC with that information Problem WINS resolution failed Explanation The DNS server cannot determine the NetBIOS names Remedy You can manually fix this problem in the DNS configuration section of network properties Problem ncorrect WINS server Xxx XXx XXXx Xxx configured on PC Explanation There are multiple WINS servers on the network and the PC is configured for the wrong one Remedy Find out the correct WINS information Access the PC s network properties and configure the PC with that information Problem No WINS server found on network to resolve names Explanation The PC is configured to use WINS Windows Internet Name Service and none can be found Remedy Make sure the WINS server is up and running Access the PC s network properties Problem PC WINS incorrect Explanation NetTool sees a WINS server on the network but it is not the one configured on the PC in question Remedy View the details of the WINS server by accessing the Key Devices list Change the PC s config
21. P Phone Bootup gt DHCP DISCOVER 00c017a00079 gt DHCP OFFER 129 196 197 016 gt DHCP REQUEST 003094c4426f gt DHCP ACK 129 196 197 016 gt DNS req 003094c4426f CiscoCM1 danahertm com lt DNS response 129 196 197 244 gt TFTP file request OS79XX TXT gt TFTP file request SEP003094C4426F cnf xml gt ALARM TO CM 25 Name SEP003094C4426F gt REGISTER WITH CM ip 129 196 197 016 name SEP003094C4426F the phone broadcasts an IP address request the MAC address of the phone the DHCP server offers an address the offered IP address the phone requests the offered address the server acknowledges the request the phone requests the Call Manager IP the DNS server responds with the Call Manager s address the phone uses TFTP to get operating files the phone signals the Call Manager and registers with the Call Manager B 2 Typical Cisco Skinny SCCP Phone Bootup continued Appendices Sample VoIP Call Logs B lt REGISTER_ACK gt CAPABILITY_REQUEST lt CAPABILITY_RESULT gt TFTP file request SEP003094C4426F cnf xml gt TFTP file request RINGLIST XML gt TFTP file request DISTINCTIVERINGLIST XML gt CDP SEP003094C4426F Cisco IP Phone 7960 the Call Manager acknowledges the registration the phone asks about its capabilities the Call Manager replies the hone TFTPs down three more files the phone sends out CDP packets periodically B
22. Spd 18 only Actual Spd 16Mb Level n Hormal Polarity Harmal Adertsd Duplens Full ahn23s bmp Figure 4 2 Link Configuration Details On this screen NetTool identifies the wire pair it is connected to and reports the duplex level and polarity of the signal see Table 3 3 for descriptions of the icons used This information can help you troubleshoot poor quality in a connection The actual and advertised speeds of the link are also given Monitoring this information can help you anticipate possible performance and connectivity problems If the VolP Voice over IP option is installed this screen gives you PoE Power over Ethernet measurements It displays the output power and line voltage information for the wire pairs Checking Frames for Errors To find out how many frames have been transmitted and whether any errors were discovered in those frames display the Health screen Figure 4 3 El Health X Frames 66444 Broadests 858 153 Errors 7 15 CS 7 Shorts B y Jabbers H A 2 Collisions 235 15 afq35s bmp Figure 4 3 Health Details This screen enables you to look at the status of frames transmitted across the link since AutoTest began As you can see NetTool provides a breakout of the types of errors it discovers These detailed error statistics can help you isolate device and network related problems Troubleshooting a Network Device 4 Verifying a Device s Configuration The Health scr
23. Things to Consider AA Problems NetTool Detects sesse ee Ee ee AE ee Ge Ee ee Ge ee enne Link Connectivity Problems esse ee ee Re ee Re ee Re ee Re ee ee Re ee ee ek ee Network Probleme Health Probleme see ees ee se ee ee ee E NetWare RE ER RE EE AE N Sk epee Qe OE AE OE EE OE AE Host Gro guo If ie Pm Name Hesolutton eene nennen zem acp Unwanted protocols when enabled i ee ee Re ke Re ee Re ee Re 7 Verifying Voice over IP Service esse esse Ese RE ERA EER KEER EA ER RE ER RA RR RE ER EG ER EG nnne EE INMOGUCTION AR EA AE EE EE AE RE cede RUNNING pog e Viewing PoE Voltage and Pair Information Contents continued Viewing VLAN and CDP Information TO VolP LOG RE EE OE EE N M Viewing Call Quality Measurements 8 Creating and Managing Reports Tie ole os AREA OE EE Before You Begin Creating dei RE EE OE EE Deleting or Overwriting a Report Appendices A Specifications RR EE ER EE ED B Sample VolP Call Logs C Glossary NetTool Users Manual vi List of Tables Table Title 1 1 NetTool s Device long 3 1 Services NetTool Discovers ee ee RA RR RA RA RR ee RA ee Re nennen nennen 3 2 DUPIOX SOMtINGS EE 3 8 Link and Polarity Level SERS Re GEREEN repe Rte pn dea ER ESE RENE eR SERA Ee Se EE 5 1 Ping Status Icons ee RA RA RA RA RR ee RA ee RA ee ee RR
24. a Link protocol A bridge evaluates source and destination addresses to pass only frames that have a destination on the connecting network Appendices C Broadcast A message that is addressed to all stations on a network For Ethernet networks the MAC broadcast address is FFFFFFFFFFFF Broadcast Storm A situation in which a large number of stations are transmitting broadcast packets This typically results in severe network congestion This problem is usually a result of a misconfiguration Bus Topology A bus topology is a network architecture in which all of the nodes simultaneously receive network traffic Ethernet is a bus topology Byte A collection of bits A byte usually contains 8 bits Characteristic impedance Characteristic impedance is the opposition resistance and reactance to signal propagation on a cable It depends on the physical properties of a cable which are determined at the time of manufacture Manufacturing variations can cause slight differences in characteristic impedance for the same cable type C 3 NetTool Users Manual Client A client is a computer that makes reguests of a server A client has only one user a server is shared by many users Collision A collision is the result of two or more nodes transmitting at the same time Excessive collisions are most often caused by a problem with the physical media Crossed Pair A wiring error in twisted pair cabling in which a pair on one
25. abling installations by testing for length shorts split pairs or opens including pin to pin wiremapping e Check a PC s configuration and identify its network e Ping network devices to verify connectivity 1 2 e Listen to traffic between network devices to detect common connectivity problems NetTool Pro and VoIP models only e Generate resource reports to document network and PC performance NetTool Pro and VoIP models only Care and Maintenance Treat your NetTool tester with care to ensure the best performance Clean the tester carefully by using a soft slightly damp cloth Never use harsh detergents solvents or abrasive cleaners Clean the LCD by gently wiping it with a soft cloth or tissue moistened with isopropyl alcohol Package Contents Take a moment to check the shipping container to make sure that the contents match the list below If any item is missing contact your place of purchase e Four 4 AA batteries e Serial cable e RJ 45 cable e Wiremap adapter e This NetTool Users Manual and the NetTool Quick Reference Guide e CD ROM containing this NetTool Users Manual NetTool Blaster updates software and the NetTool Toolkit e CD ROM containing Key Device Watch Optional Accessories You can separately purchase the following accessories for NetTool from Fluke Networks or from your local distributor e A C adapter e Battery charger e Rechargeable batteries Introduction What
26. aints you with the functions of the tester s buttons navigation keys and LEDs You will also become familiar with NetTool s icon menu driven user interface Turning on NetTool To turn NetTool on press the green Power button firmly for one second This initial screen is displayed Select AutoTest to begi wun Flukenetworks com ahn13s bmp Figure 1 2 Initial Screen Turning on the Backlight To turn on the display backlight quickly press the Power button Press it again quickly to turn the backlight off 1 5 NetTool Users Manual Understanding the LEDs On each side of the LCD NetTool has a pair of LED indicators Figure 1 3 These LEDs combine to give you immediate insight and at a glance information about your network environment The top pair of LEDs provides link collision and error information while the bottom pair indicates utilization levels i isi 7 Link Collision es id f S and Error LED __ Utilization Utilization LED LED IE Om AutoTest Problems 1 amp Protocols El Key Devices 20 3b Health ahn314f eps Figure 1 3 NetTool LEDs 1 6 Link Collision Error LED A tri colored LED with these states e Green a link pulse is present e Yellow collisions are occurring e Red errors for example FCS and jabbers are being detected Utilization LED A tri colored LED with each color representing the
27. ames DropBurst 21ms the longest dropout lt RTP cnt 2233fr phone 2 stats Jitter 162ms Arrival Avg 19ms Min 830us Max 163ms Drop Ofr DropBurst 0s Call Complete B 10 10BASE2 Sometimes called ThinLAN or CheaperNet 10BASE2 is the implementation of the IEEE 802 3 Ethernet standard on thin coaxial cable The maximum segment length is 185 meters Appendix C Glossary 10BASE5 Sometimes called ThickLAN 10BASES is the implementation of the IEEE 802 3 Ethernet standard on thick coaxial cable The maximum segment length is 500 meters NetTool Users Manual 10BASEF A point to point fiber link This is the draft specification for IEEE 802 3 Ethernet over fiber optic cable 10BASE T 10BASE T is the implementation of the IEEE 802 3 Ethernet standard on unshielded twisted pair wiring It is a star topology with stations directly connected to a multi port Hub and it has a maximum cable length of 100 meters 100BASE TX 100BASE TX is the implementation of the IEEE 802 3u Ethernet standard on two pairs of unshielded twisted pair wiring It is a star topology with a maximum cable length of 100 meters The maximum network diameter is 205 meters with two class II repeaters 802 2 This IEEE standard specifies Logical Link Control LLC which defines services for the transmission of data between two stations at the data link layer of the OSI model 802 3 Often called Ethernet this IEEE standard governs the C
28. arrier Sense Multiple Access Collision Detection CSMA CD networks Typical cabling standards are 10BASE T 10BASE2 and 10BASE5 Access Method The set of rules by which the network determines what node has access to the network The two most popular access methods are Carrier Sense Multiple Access Collision Detection Ethernet and token passing Token Ring and ARCNET Anomaly An impedance discontinuity causing an undesired signal reflection on a transmission cable AppleTalk AppleTalk is a networking protocol primarily used for communications between Macintosh computers and Apple printers The AppleTalk network is segmented into zones ARP Address Resolution Protocol A member of the TCP IP protocol suite ARP is the method by which a station s MAC address is determined given a station s IP Internet Protocol address Attenuation A reduction in the strength of a signal the opposite of gain Bandwidth Bandwidth is the rate at which data can be transmitted over a channel measured in bits per second For example Ethernet has a 10 Mbps bandwidth and FDDI has a 100 Mbps bandwidth Actual throughput is almost always less than the theoretical maximum BPS Bits per second A measure of speed or raw data rate Often combined with metric prefixes as in kbps for thousands of bits per second or Mbps for millions of bits per second Bridge Switch A device that links two or more networks that use the same OSI Dat
29. connector of the cable is wired to a different pair on the other end of the cable Crosstalk Crosstalk is electrical interference generated by signal coupling between wires in a multiwire cable C 4 CSMA CD Carrier Sense Multiple Access with Collision Detection In CSMA CD each node or station has equal access to the network Before transmitting each station waits until the network is not busy Since each node has equal access to the network a collision two stations transmitting at the same time can occur If a collision occurs the affected nodes will wait a random time to retransmit Ethernet uses the CSMA CD access method dBm Decibels below 1 mW 1 milliwatt The logarithmic measure of the ratio of the output power of a signal to an input signal of 1 mW DECnet Digital Equipment Corporation s set of communication protocols for networking computers Destination Address The address of the station receiving a frame DNS Domain Name Services provides a mechanism that allows users to remember logical machine names rather than IP addresses DNS provides mapping between a machine name e g www fluke com and its IP address e g XXX XXX XXX XXX EIA568 Electronic Industries Association Commercial Building Telecommunications Wiring Standard Specifies maximum cable lengths installation practices and performance specifications for generic building wiring Encapsulation Encapsulation is the method of placing
30. ddress make sure that the address you assign is correct for the subnet you are in Pinging a Single Device To ping one device do the following 1 From the Main menu select Toolkit 2 Select Ping to display the Ping screen Figure 5 4 Ping Default Router 129 196 196 878 123 136 196 B881 216 119 105 017 129 129 1718 884 afq41s bmp Figure 5 4 Ping Screen 3 Do one of the following e Select the IP address of the device from the list OR e Select Add New Device to display the Edit screen On this screen supply the IP address of the device then select Update NetTool pings the device and automatically adds its address to a running list up to 10 of recently pinged devices If there are more than 10 addresses in the list the oldest address is deleted to make room for the most recent addition Pinging Multiple Devices Ping Catalog lets you create groups of IP addresses that reflect your network configurations For example you can make a group of IP addresses that reflect your Marketing group or Customer Support group After you create a group you can simultaneously ping all of the devices in the group To create the groups you need to use NetTool Toolkit the PC based software located on the CD ROM that comes with NetTool See the online Help for the NetTool Toolkit to learn how to set up and upload your groups of IP addresses Troubleshooting Networks 5 Ping After your lists are uploaded NetTool
31. displays them in the Ping Catalog under the group names you assigned To ping a group do the following 1 Select Ping Catalog from the Toolkit menu to display the Ping Catalog screen 2 Move the cursor to the desired catalog as illustrated in Figure 5 5 then press SELECT EE First Floor Second Floor afq45s bmp Figure 5 5 Ping Catalog Screen The list of IP addresses in the selected group is displayed A status icon see Table 5 1 for descriptions appears to the left of the catalog s name NetTool Users Manual 3 To view results for a particular IP address move the cursor to the address then press SELECT The Ping Results screen Figure 5 6 for your selection is displayed Ping Results x IP 129 196 196 001 Packets 32 bytes Sent Revd Lost Loss Last Min Max Red B DI A ms Done afq50s bmp Figure 5 6 Ping Results Screen 4 To ping the list of IP addresses again move the cursor to the name of the catalog then select Restart Note If you need to edit a list of IP addresses see Creating a List of IP Addresses to Ping in Chapter 2 Table 5 1 Ping Status Icons Status Meaning Icon Running d Ping Complete Problem with the ping Corresponds with the severity level of problems Low severity one packet lost Medium severity two packets lost High severity three packets lost or the device was not found Introduction The Problem
32. e 6 10 Email Problem Unable to connect to SMTP mail server Explanation The Simple Mail Transfer Protocol SMTP server information is either not configured or is not correctly configured on the PC The server itself may be down as well Remedy Access NetTool s Key Devices list to view information about this server and then make corrections within the mail setup area of the PC Problem Unable to connect to POP2 server Explanation The PC cannot find the POP2 server it is configured to find The server itself may be down as well Remedy Access NetTool s Key Devices list to view information about this server and then make corrections within the mail setup area of the PC Problem Unable to connect to POP3 server Explanation The PC cannot find the POPS server it is configured to find The server itself may be down as well Remedy Access NetTool s Key Devices list to view information about this server and then make corrections within the mail setup area of the PC Problem Unable to connect to IMAP server Explanation The PC cannot find the IMAP server it is configured to find The server itself may be down as well Remedy The IMAP server information is either not configured or is not correctly configured on the PC Access NetTool s Key Devices list to view information about this server Common Problems 6 Problems NetTool Detects Printer Problem Unable to connect to IP print spool server Exp
33. ed Protocols screen 2 3 Up Down arrow keys 1 8 Index continued V VLAN information 7 2 VoIP Voice over IP AutoTest 7 1 logs samples B 1 VLAN CDP information viewing 7 2 VoIP log 7 3 VoIP monitor 7 4 voltage pair information viewing 7 2 voltage and pair viewing 7 2 X X symbol closing current screen 1 8 NetTool Users Manual
34. ed ensures that you have access to new call control protocols as they become available For update instructions see Updating NetTool s Software in Chapter 1 Chapter 7 Verifying Voice over IP Service Running AutoTest To begin testing do the following 1 Connect NetTool inline between the network and a PoE powered device see Inline Connection in Chapter 2 Caution When operating inline with a POE powered device connected to NetTool make sure that NetTool is not plugged into the AC adapter or into a serial device that is grounded or damage may occur to the equipment Run AutoTest see Running AutoTest in Chapter 3 7 1 NetTool Users Manual Viewing PoE Voltage and Pair Information After you run AutoTest you can obtain PoE voltage and pair information for the network or phone side Do the following 1 Depending on which side you want to look at select one of the following icons e PC icon IL e Network icon The Station menu PC icon or Network menu Network icon is displayed 2 Select Link Config to display this screen 1 al Duples Full Dot 49 12 12 36 ahn201s bmp Figure 7 1 Link Configuration Screen PoE voltage and pair information are displayed This information is updated every two seconds 7 2 Viewing VLAN and CDP Information NetTool reports VLAN information and CDP information if found for both the phone side and the network side Toloo
35. ee ee RA nennen ee ER ee ee nennen 6 1 Elements of the Problem Log issie ee Roe Ee ee ee ee ee Ee Ge ee ee ee ee ee Ge ee ee ee 7 1 VoIP Monitor RTP RTCP Statistics ee RA ee RR ee Re ee RA ee ee ee nennen Vil NetTool Users Manual viii List of Figures Netkoot Front mte Tale u M InitialSeieen s GE De RR EE IE EE RE Ee N EET NetTool dade EE RE ON EE OE N HE Kaell Mie Battery Compartment iese ee ee Re AR ee Re ee Re ee Re ee Re ee Re ee ee Powering NetTool with the AC Adapter esse ee ee ee Re Re Re Re Re Re Re ee ge ne diere dIE ER AO ER E AA Settings LE EE EE RR OR ORE AA eN Stellies AAR rs Single Ended Connection into a Wall Jack Single Ended Connection to ab Inline Connection between a PC and the Network Connecting NetTool to the Serial Port NE dee ME a EE EA EE N Cable Status Screen ee ee ee ee Re Re RR rte nenori ee Eno ee Re ee ee ee gee Wiremap PEN RR OR OR OE N Diagram of NetTool Connected to ab ix NetTool Users Manual 3 5 Diagram of an Inline ConnecCtiON ee RA RA RR RA RA ee RA ee RA ee Ee ee 3 6 Inline Connection Between a PoE Powered Device and the Network A 1 Station ET 4 2 Link Configuration Details 2 inei EES ice ea pa Deuce Edna deco Ee 4 3 NE ER 4 4 Health Statistics net ne Det liens rice o SE ee ates wes DEE EA ese OSEE Tode ek Ek 4 5 Protocols SCG Ot EE 4 6 IP P
36. een shown in Figure 4 3 displays cumulative activity since you last ran AutoTest You may also want take a look at what is going on now and simultaneously view the health of frames on both sides of a connection To do this 1 Select Toolkit from the Main menu 2 From the Toolkit menu select Health to display the screen shown in Figure 4 4 afq08s bmp Figure 4 4 Health Statistics 3 To change the view move the cursor to Util or Bcast then press SELECT For example selecting Util changes the view to broadcast traffic collision levels or errors coming from either device to which NetTool is connected 4 3 NetTool Users Manual 4 4 To change what NetTool is viewing in real time and to change the direction that is to from Network or to from PC move the cursor to the desired device icon located in the upper right or left Then press SELECT Use this information to make comparisons For example you may see a high percentage of network utilization and observe that the PC is also registering high utilization To segment what the PC is doing to contribute to a high utilization statistic for example broadcasts move the cursor to Util then press SELECT 6 To change how the data is expressed in per seconds or as a percentage of current activity move the cursor to the reading below a meter then press SELECT Note If you exit the Health screen and return later without powering
37. ess gt TFTP file request the phone downloads its operating file uObE8NKkRvq spa000F66FC9 REGISTER sip atlas4 atla the phone sends periodic heartbeat registration 200 OK the gateway responds REGISTER sip atlas4 atla 200 OK B 8 Typical SIP Call Log Appendices B Sample VolP Call Logs INVITE sip 5983842 atlas 407 Proxy Authentication ACK sip 5983842 atlas4 a INVITE sip 5983842 atlas 100 Trying 180 Ringing 180 Ringing 200 OK SIP RTP port 12436 ACK sip 17195983842 216 Call Setup 213ms RTP streaming 129 196 196 202 10106 VLAN untag TOS 0xb8 216 115 023 031 12436 VLAN untag TOS 0x0 BYE sip 17195983842 216 the phone invites the other party the gateway acknowledges the number the gateway tries connecting the far end is ringing we have a connection the RTP port number to be used the call setup time the conversation has started phone 1 IP address and port number phone 1 VLAN and TOS being used phone 2 IP address and port number phone 2 VLAN and TOS being used the phone goes back on hook B 9 NetTool Users Manual Typical SIP Call Log continued gt RTP cnt 2186fr phone 1 stats the number of RTP frames Jitter 21ms the inter frame arrival jitter Arrival Avg 19ms the average arrival of the frames Min 7ms Max 29ms the minimum and maximum inter arrival time Drop 23fr the number of dropped fr
38. ess an arrow key to move the cursor to the desired IP address 2 Press SELECT 2 4 3 Doone of the following e To add an IP address to the list select Add New Device then add it to the list e To edit an existing address select it then change any of the octets within the address Selecting a Language for the Display Screens To select a language for your display screens 1 Select Language 2 Choose the desired language Obtaining Information about Your NetTool To view information about your tester such as the software version serial number and MAC address select About NetTool Be sure to record the serial number and MAC address of your tester for future reference Connecting NetTool NetTool has two RJ 45 jacks one on each side Use the Supplied RJ 45 cable to connect a patch cable to NetTool and to create a single ended or inline connection NetTool also has a serial port which enables you to directly connect the tester to a PC Connecting a Patch Cable You can use NetTool to test the quality of the patch cables you will use If you also attach the supplied wiremap adapter you can verify pin to pin connectivity from the near end to the far end of the cable To connect a patch cable 1 Plug one end of the cable into either RJ 45 jack on NetTool 2 Plug the other end of the cable into the other RJ 45 jack You can now run AutoTest see Running AutoTest in Chapter 3 Setting Up and
39. ess possible for a device be it a NetBIOS name DNS name IP address or Mac address This helps you determine which services or servers exist on the network Select any key device to view specific information for example its IP address and subnet mask 5 3 NetTool Users Manual Ping NetTool can automatically ping any single device on your network or a group consisting of up to 10 devices Ping provides instant information about how a network device is connected and how it is acting on your local segment making it easier for you to pinpoint connectivity problems This section shows you how to set up and use the Ping utility Notes e The Ping option only works in single ended mode If you want to ping and are in inline mode the following symbol is displayed Pins Disconnect one of the RJ 45 cables from NetTool and then rerun AutoTest e To use all of the functions of Ping make sure that you install NetTool Toolkit on your PC so that NetTool can communicate with your PC through the serial port connection Assigning an IP Address to NetTool To run Ping your NetTool must have a valid IP address By default NetTool uses DHCP to configure itself Therefore if you have DHCP on your network you do not need to configure NetTool s IP address 5 4 If you need to manually assign an IP address go to Manually Assigning NetTool an IP Address in Chapter 2 for instructions When manually configuring the tester s IP a
40. f the IP protocols NetTool sees are listed on this screen 4 5 NetTool Users Manual Obtaining a Device s IP Address Information To obtain IP address information for a device do the following 1 4 6 Select Addresses Used to display the following Addresses deed Ki Pgnamie IP conf C uses Cer EP Lease tim FETE Hrs in Eest Hames LOGEERT JR ahn25s bmp Figure 4 7 Addresses Used Screen The Addresses Used screen enables you to verify a devices IP address information This screen also displays the best discovered name for the device as well as its IP IPX and MAC address CDP Cisco Discovery Protocol information if found is also given on this screen Press the Down w arrow key to locate the CDP section as shown in Figure 4 8 t Addresses Used Ki CEP Hame SEPHBS BS4C 29805 Port Port 1 Platform Cisco IP Phone 7968 VLAH Pri FrmCnt ahn323s bmp Figure 4 8 CDP Information CDP information is reported for the most recently received CDP advertisement on that side This information is updated every two seconds When plugged into a switch VLAN port information for Native VLAN and Appliance phone VLAN are also given 3 You can also find out what VLAN a device belongs to Press the Down e arrow key to locate VLAN statistics as shown in Figure 4 9 HE Addresses Used hd ahn322s bmp Figure 4 9 VLAN Information NetTool can provide information for up to f
41. gical link control LLC frame SNAP provides access to additional protocols and allows vendors to create their own protocol sub types SNMP Simple Network Management Protocol Designed by the Department of Defense and commercial TCP IP implementors SNMP is part of the TCP IP protocol suite SNMP operates on top of the Internet Protocol and can manage virtually any network type Source Address The address of the station originating a frame Split Pair The error of using wires from two different twisted pairs This error cancels the crosstalk elimination characteristics of twisted pair wiring and produces crosstalk Use a single twisted pair for Transmit and another twisted pair for Receive to minimize crosstalk Appendices C Subnet A subnet is a section of the TCP IP network Each subnet has a unique subnet number and is connected to a router which enables connection to other subnets Subnet Number The subnet number is programmed into the subnet router and follows the network number in an IP address TCP IP Transmission Control Protocol Internet Protocol TCP IP is the protocol suite originally developed by the Advanced Research Projects Agency ARPA to interconnect a research network It later evolved into the Internet The TCP IP is an open standard not owned by any particular organization The term TCP IP is often used to refer to the entire suite of related protocols that includes IP FTP Telnet RIP NetTool Users
42. has a tendency to become the master browser Remote Collision A collision that occurs on the other side of a repeater Since a 10BASE T Hub is a multi port repeater with a segment dedicated to each station 10BASE T collisions are remote collisions Repeater A repeater is a layer 1 device that regenerates and retimes frames Router or Gateway A router is a device that connects subnets together Any packets destined for a device on a different subnet are given the subnet s router Routing between subnets can involve multiple routers A user s machine must be configured to know the IP address of the router for its subnet in order to communicate with machines on other subnets Mis identified gateways are a common problem for manually configured IP settings Appendices C RJ 45 Connector A modular connector used for UTP wiring The RJ 45 connector has eight conductors to accommodate four pairs of wires and it has become the dominant connector used in Ethernet and Token Ring UTP installations Router A router is a network layer device that connects networks using like network layer protocols Routers can span different network topologies For example a router can interconnect two IP subnets For a router to pass traffic unlike a bridge it must be configured for the desired protocol Routers are more difficult to configure but offer greater security RTP Real time Transport Protocol The protocol used for actual Voice data
43. ime Hops Most commonly defined as the number of routers traveled by a frame to reach its destination Hub Repeater Today most often referred to in 1OBASE T networks A 10BASE T Hub is essentially a multiport repeater Hub with each segment dedicated to a single 10BASE T connection ICMP Internet Control and Message Protocol A communication protocol used by every device that uses IP ICMP reports errors that occur during the delivery of packets on the network IP Internet Protocol IP is the network layer protocol for the TCP IP suite IP Address An IP address is a series of four numbers separated by dots each of which is between 0 and 255 An IP address must be unique to a machine or the network will not be able to properly deliver network information to that machine The address is made up of a network number a subnet number and a node number IP Network Number The network number consists of the first two numbers of a device IP address on a network IPX Internetwork Packet Exchange IPX is the network layer protocol for Novell s NetWare protocol suite Jabber A frame greater than the maximum legal size greater than 1518 bytes with a good or bad frame check sequence In general you should not see jabbers The most likely causes of jabbers are a faulty NIC driver or perhaps a cabling problem Jitter Variability in latency or delay If a network provides varying levels of latency i e differe
44. iptions of test functions along with illustrations of typical menus and result screens are provided to assist you with the operation of the tester and interpretation of results What is NetTool NetTool is a handheld tester that combines cable network and PC configuration testing into a single device NetTool is specifically designed to speed your frontline network troubleshooting moves adds amp changes and desktop to network connectivity work Chapter 1 Introduction FLUKE NerToot networks V 12 E Om AutoTest Problems 1 ED ahn010f eps Figure 1 1 NetTool Front Panel 1 1 NetTool Users Manual NetTool is available in the following models e NetTool Standard provides single ended testing of network devices Also includes a Ping function and the capability to display VLAN traffic and CDP information e NetTool Pro includes all of the features in the standard model plus the ability to do inline testing between two devices such as a PC and the network switch The Pro model also includes the Reporter a function that enables you to create and save test reports e NetTool VoIP includes all of the features available in NetTool Pro plus the ability to monitor VoIP Voice over IP service NetTool Features NetTool s features and functions enable you to do the following e Verify the reliability of cabling and c
45. ismatches can cause communication between devices to be impeded Table 3 2 Duplex Settings Symbol Meaning Full Duplex 2 i Half Duplex T i 3 5 NetTool Users Manual Polarity information is also given The waveform shaped icons used in the diagram are listed in Table 3 3 Table 3 3 Link and Polarity Level EE EN Low level normal polarity Low level reverse polarity Link level is displayed by the height of the waveform 3 6 Under the NetTool contei you can also obtain status information for the cables connected to NetTool For example 12 wm SE 26 IZ ahn235f eps The tester detects whether the cables are straight or swapped If it sees a swap cable problem it swaps the cables internally allowing you to troubleshoot past a simple swap cable problem The LEDs on either side of NetTool indicate the status and utilization of the link and whether NetTool discovers any errors To get detailed results move the cursor to one of the following icons then press SELECT e PCicon in enables you to view results for the device Go to Chapter 4 Troubleshooting a Network Device for details e Network icon enables you to view network results Go to Chapter 5 Troubleshooting Networks for details You can view additional results by selecting items from the Main menu below the diagram Inline between a POE Powered Device and the Network During AutoTest NetTool checks for a net
46. ive discovered VLANS This screen shows the VLAN s ID its priority frame counts and the untagged frame count This information is updated every two seconds You can monitor VLANs during a VoIP call to see which ones are being used see entries in the VoIP Logs in Appendix B Troubleshooting a Network Device 4 Verifying a Device s Configuration Identifying Network Resources To find out what network resources are being used select Servers Used to display the Servers Used screen Figure 4 10 E Servers Used EK fFirst Resp Bestil z Badcs6b77be Fincas 1 MAL AAaBCSEb betInteld Default Router Best DBINPER DELL ahn14s bmp Figure 4 10 Servers Used Screen This screen lists all servers routers and printers that are attached to the network by name or IP address along with MAC Media Access Control address services provided and encapsulation methods used Network resources can include the following HTTP SMTP POP WINS Nearest NetWare DHCP and DNS servers CDP and VLAN as well as the router gateway 4 7 NetTool Users Manual 4 8 Introduction The information documented in this chapter can help you evaluate the health of your network and assist you with troubleshooting network problems NetTool features a Ping test which is described in this chapter Use this test to verify connectivity between devices on the network Finding Out About Your Network To obtain information about
47. k Disconnect immediately NetTool cannot reliably discover Telco information with the AC adapter or serial cable connected It also detects ISDN signals but cannot reliably detect the S T interface AutoTest 3 Running AutoTest f Token Ring indicates the presence of a Token Ring network Ethernet tells you if the jack is hot and what is on the other end for example a hub or a switch It also provides the speed and duplex setting level polarity and the segment ID so you can pick the right network to hook up to a PC if there are multiple jacks No Response A dangling flashing power cord indicates that NetTool senses an Ethernet device but the device is not responding This usually means that the device is powered off 3 3 NetTool Users Manual Table 3 1 lists the devices and services that NetTool discovers Table 3 1 Services NetTool Discovers Servers IP Servers IP services discovered DHCP DNS email SMTP POP IMAP Web HTTP HTTP proxy WINS NetWare Servers IPX service types Nearest File Server File Server NetWare Access server Time Synchronization Server NetWare Directory Server NDS NetWare Management Server NetBIOS Servers Primary Domain controllers Backup Domain controllers Master Browsers Routers IP Routers RIP IGRP EIGRP OSPF IRDP RIP2 IPX routers RIP Printers IP Printers IP Printers IP Print Spoolers IPX Printers IPX Print services DLC Printers Microsof
48. k at the phone side select the PC icon ae Then on the Station menu select Addresses Used e To look at the network side select the Network icon Then on the Network menu select Segment ID The Addresses Used and Segment ID screens show the same VLAN and CDP information See Obtaining a Device s IP Address Information in Chapter 4 for a description of the information on these screens Both VLAN and CDP information is updated every two seconds You can monitor VLANS during a call to see which ones are being used see entries in the VoIP Logs in Appendix B When plugged into a switch VLAN port the native and appliance phone VLANs are also displayed along with the CDP information as shown in Figure 7 2 EE Segment ID x Hame sCisco_s758 ort FastEthernet1 8 21 tforms cisco Pla WS C3756 24P Hatiwe WLAN 1 Appliance WLAN 196 ahn320s bmp Figure 7 2 VLAN Port Information The VoIP Log The VoIP Log is a per call event log that records major SCCP SIP and RTP events and measurements To access the log do the following 1 From the Main menu select VolP Toolkit 2 On the VoIP Toolkit menu select VoIP Log to display the VoIP Log screen You can use the VoIP Log to watch events that occur as the phone boots up and subsequently to monitor a call that is in progress Verifying Voice over IP Service 7 The VoIP Log During the boot process the log captures the exchanges between the phone and the netw
49. kit or VoIP Toolkit so named if the VoIP option is installed displays the Toolkit menu where you can access the Ping utility the Reporter function and health statistics If the VoIP Voice over IP option is installed the Toolkit menu lists VolP related functions Navigation Keys The navigation keys are the four directional arrow keys that encircle the SELECT key see the diagram on the right e Up Down arrow keys AY e Left Right arrow keys gt Use the arrow keys to navigate through the menu system They control the on screen cursor and when pressed move you to the icons and to different menu entries 1 8 TEN ahn310f eps Scrolling To scroll through individual items on a menu press the Up and Down arrow A Y keys To scroll quickly through a menu use the Scroll bar which is located along the right side of a menu Paging Up and Down If a menu has several pages press the Left or Right arrow key gt respectively to display the preceding page or to advance to the next page Closing the Current Screen To close the current screen press the Up arrow A key to move the cursor to the EB located in the top right corner then press SELECT Power Supply To supply power to the tester you can use the four AA size batteries supplied or the optional rechargeable batteries Alternatively you can use the optional AC adapter Installing the Batteries Figure 1 5 shows you how to i
50. lanation NetTool is detecting that the PC is not able to connect to the configured IP printer server The server itself may be down as well Remedy Access NetTool s Key Devices list to view a list of IP printers and correct the problem in the printer setup area on the PC Problem Unable to connect to IP print spooler Explanation The print spooler configuration on the PC is either not correct or the spooler itself is down or offline Remedy Check the spooler itself and then access NetTool s Key Devices list to view a list of IP devices and correct the problem in the printer setup area on the PC NetTool Users Manual Unwanted protocols when enabled The purpose of the Unwanted Protocols feature is to enable you to find protocols that you do not want on the network For example if you have migrated away from NetWare on the network NetTool will flag a device that still has NetWare configured on it e Problem NetBEUI detected e Problem WINs detected e Problem NetWare detected e Problem MB master browser election detected Introduction With the VoIP Voice over IP option enabled you can use NetTool to verify VoIP service on a link NetTool can track SCCP SIP call control and measure RTP quality of service The VoIP Log and VoIP Monitor capture call transactions providing you with a step by step record of major events so that you can troubleshoot problems with VoIP service Note Keeping your NetTool updat
51. le test results 3 2 PoE powered device results 3 7 services discovered 3 4 single ended results 3 3 wiremap results 3 2 B Backlight turning on 1 5 battery installing 1 9 level indicator 2 2 C care and maintenance 1 2 connecting NetTool 2 5 p date time setting 2 2 DHCP 2 3 duplex settings 3 5 E environmental requirements A 2 equipment supplied 12 errors viewing 4 3 Index F factory default settings restoring 2 3 feet meters changing 2 2 Fluke Networks contacting 1 4 H Health screen 4 3 inline connection 2 7 IP address setting NetTool s 2 3 K Key Devices screen 5 3 NetTool Users Manual L batteries 1 9 pinging multiple devices 5 5 care and maintenance 1 2 results screen 5 6 LEDs configuring 2 1 status icons 5 6 Link Collision and Error 1 6 date time setting 2 2 polarity and link levels 3 6 Utilization 1 6 environmental requirements A 2 powering NetTool 1 9 Left Right arrow keys 1 8 factory default setting changing 2 3 printers discovered 3 4 link and polarity levels 3 6 features 1 2 Problem log Link Config screen 4 2 IP address setting 2 3 displaying 6 1 Ping lists creating email problems 6 10 M power supply 1 9 health problems 6 5 registering the product 1
52. lity programs supplied on the CD ROM see PC NetTool Link Utility Programs 2 8 To connect NetTool use the supplied serial cable As shown in Figure 2 7 connect one end of the cable to the serial port on the PC and the other end to the serial port on the right side of NetTool ahn019f eps Figure 2 7 Connecting NetTool to the Serial Port Chapter 3 AutoTest Introducti The AutoTest screen Figure 3 1 is displayed ntroauction AutoTest flashes to indicate that the tester is ready to AutoTest provides a good starting point for trying to run a test determine what devices are on your network and for making a quick assessment of your network s overall condition Results from AutoTest can alert you to connectivity problems before they impact network performance This chapter shows you how to run Select AutoTest to begi AutoTest and describes the results this test provides ww flukenetwarks com ahn13s bmp Running AutoTest Figure 3 1 AutoTest Screen To run AutoTest 1 Connect NetTool using one of the connection 3 Press SELECT schemes documented under Connecting NetTool in Chapter 2 NetTool searches both RJ 45 connections to determine what it is connected to Upon completion 2 Turn on the tester a connection diagram is displayed 3 1 NetTool Users Manual Cable Test Results If NetTool is connected to a patch cable AutoTest evaluates the integrity
53. me types used If the client is suspected determine the frame type of the client Determine the frame types enabled on the server Problem No nearest server replies seen on network Explanation After a PC boots up it sends a broadcast to initiate a connection with the closest server If after three attempts there is no response this problem is listed in the log Remedy Ensure that GNS Get Nearest Server is enabled on the server and check connectivity to routers by doing an IPX ping Check the Key Devices list If the routers are listed NetTool is seeing the routers but the PC is not You might suspect a bad NIC card or NIC card configuration file Problem No first responder seen on network Unable to configure PC network number Explanation During boot up a PC running IPX sends a query to the router asking for its network number If there is no response after three queries this problem is listed in the log Remedy Check connectivity from the PC to the network drop TCP IP Problem PC using incorrect IP subnet mask Explanation NetTool has determined that the PC is not properly configured Remedy Access PC network properties and correct the IP subnet mask Problem Router issued ICMP redirect Hosts or devices using incorrect gateway routers Explanation NetTool has determined that the PC is not properly configured Remedy Access PC network properties and correct the IP address You should also make
54. ms the minimum and maximum inter arrival time Drop 3fr the number of dropped frames DropBurst 61ms the longest dropout B 5 NetTool Users Manual Typical Cisco Skinny SCCP Call Log continued lt RTP cnt 476fr phone 2 stats Jitter 1ms Arrival Avg 20ms Min 19ms Max 20ms Drop Ofr DropBurst 0s Call Complete B 6 Appendices B Sample VolP Call Logs Typical SIP Phone Bootup Log gt DHCP DISCOVER the phone broadcasts an IP address request O00f66fc9e72 he MAC address of the phone gt DHCP OFFER the DHCP server offers an address 129 196 196 202 the offered IP address gt DHCP REQUEST the phone requests the offered address O00f66fc9e72 SDHCP ACK the server acknowledges the request 129 196 196 202 gt DNS req 000f66fc9e72 atlas4 atlas vonage net DNS response 216 115 025 056 the phone uses DNS to look up the gateway the DNS server responds with the IP address REGISTER sip atlas4 atla the phone registers 200 OK gt DNS req 000f66fc9e72 the phone looks up the time server time vonage net lt DNS response 216 115 031 140 REGISTER sip atlas4 atla the phone does a periodic heartbeat register 200 OK B 7 NetTool Users Manual Typical SIP Phone Bootup Log continued gt DNS req 000f66fc9e72 the phone looks up the FTP file server Is tftp vonage net DNS response 192 015 192 015 the DNS server responds with the IP addr
55. ng Fluke Networks Re Re Re Re Re Re ee Re ee Re PC NetTool Link Utility Programs esse ese esse ee ee Re Re Re ee Re ee ee de ee ee ee NetTool Bla i i toS NetTool Rtl Installing and Running the Link Utilities eeee m Getting Acoualrted nennen ee Re ee Re ee Re ee ee T ming on Hel onc Turning on the Backlight KEER DREEF ete retten GEKEER R ERGE ERKEN GEE NetTool Users Manual Understanding the L Els Link Collision Error LED eese Sills dd de RE EE NE EN OR EE ONE Mame MEER EO OE ON EE RA AR EE Navigation GR RE N EE EE EE PoWer EE N AE EE OR RE N OE AE EE Installing the oi RR N EE ER thee ur nena iid Maximizing Battery Lie Using the AC Adapter AAA Updating NetTool s Software AA 2 Setting Up and Connecting NetTool RE RE RE AR EE EE AR EE nnn gyirerolUrei oj eL RE EE EE eee Configuring NetTool ees ee ee RR ee Re ee Re ee Re ee Re ed ee ke ee Changing the System Settings A Identifying Unwanted Protocols AAA Manually Assigning NetTool an IP Address AAA Creating a List of IP Addresses to Ping Selecting a Language for the Display Screens Obtaining Information about Your Nerfool ese ees ee ke Re Re ee Re ee eek Connecting NetTool ees ee de AA ee ee Re ee Re ee anena ee ee ee Connecting a Patch Cable A Single Ended Connection nennen nennen elle ll TEE Serial Port Connection ee ee ee Re ee Re AA ee ke ee ee ge ee ke ii
56. nsert the four AA batteries into the tester s battery compartment ahn011f eps Figure 1 5 Battery Compartment Introduction Power Supply Maximizing Battery Life The life of batteries is strongly influenced by the care that they receive The greatest enemy of batteries is heat When using rechargeable batteries avoid charging them when they are hot Battery life can also be shortened if you frequently leave NetTool in a hot place such as a car on a warm day and then charge the batteries immediately upon returning to your Office Using the AC Adapter The optional AC adapter plugs into the left side of NetTool as shown in Figure 1 6 below afq03f eps Figure 1 6 Powering NetTool with the AC Adapter 1 9 NetTool Users Manual Updating NetTool s Software From time to time updates to NetTool s software become available e Select the NetTool icon then select About NetTool to find out what version of software is installed on the tester e Tofind out if there is a new software version available go to www flukenetworks com Select NetTool from the Find your product selection box Click the software link to display the Software page Check the version number to determine if it is later than the version installed on your tester To update NetTool 1 Follow the web instructions to download the update file to your PC Connect the supplied serial cable between NetTool and the PC see
57. nt waiting times for different packets or cells it introduces jitter which is particularly disruptive to audio communications because it can cause audible pops and clicks LAN Local Area Network A physical network technology used over short distances up to a few thousand meters to connect many workstations and network devices using a communication standard Token Ring or Ethernet for example Late Collision A collision that occurs after the first 64 bytes in a frame In 10BASE T networks late collisions will be seen as frames with a bad FCS Causes of Late Collisions are a faulty NIC or a network that is too long A too long network is one in which the end to end signal propagation time is greater that the minimum legal sized frame Appendices C Layer One of seven levels in the Open Systems Interconnection OSI reference model See OSI Link Pulse A single bit test pulse that is transmitted at least every 150 milliseconds during idle periods on 10BASE T link segments to verify link integrity Manufacturer Prefix The standard partial address used to identify a particular manufacturer The prefix of the address is predefined uniquely for each manufacturer while the remainder of the address uniquely identifies the station Master Browser The Master Browser maintains the browse list a list of all servers in the master browser s domain or workgroup MBPS Millions of bits per second See BPS Multicast Packe
58. of the cable and finds errors that might suggest a physical media problem If a wiremap adapter is attached NetTool performs deeper testing of the cable by additionally verifying pin to pin connectivity Cable Length Opens Shorts and Splits To find out about the cable move the cursor to the Spool g icon then press SELECT The Cable screen is displayed as shown in Figure 3 2 afq32s bmp Figure 3 2 Cable Status Screen On this screen NetTool accurately measures wire lengths within the cable and indicates whether there are any opens shorts or split pairs present 3 2 Wiremap If a wiremap is attached select a Wiremap icon The Crossover Cable screen Figure 3 3 is displayed which verifies the length of the cable and identifies the pinouts at each end arft Crossover Cable FA afq34s bmp Figure 3 3 Wiremap Details Single Ended AutoTest Results AutoTest result screens vary depending on the device that NetTool is connected to Note This results described in this section are provided as examples of what information NetTool provides Network Drop If NetTool is connected to a network drop it displays one of the following icons to identify the service that is active on the jack H Bireleg shows the tip and ring pins in the case of voice being carried on an RJ 45 cable Caution Although NetTool can detect Telco signals it is not designed to be used on the public telephone networ
59. off the tester NetTool displays the last saved settings If you power off NetTool while viewing the Health screen readings are not saved Display the Setup screen and select Restore Defaults to restore the factory settings Tracking Protocols Note You can also view protocol information by selecting Protocols fom the Main menu To find out what protocols are associated with a device or running on the network do the following 1 Display the Protocols screen Figure 4 5 HetWare NetBIos Apple Other afq20s bmp Figure 4 5 Protocols Screen The Protocols screen lists groups of protocols present on the network This information can help you find out if there are any protocol configuration mismatches See Table 3 1 for a list of the protocols that NetTool can discover Troubleshooting a Network Device 4 Verifying a Device s Configuration The network icon appears next to the name of a protocol group to indicate that there are protocols of that type running on the network Note that some protocols also display the PC icon in which means that NetTool sees them on both the PC and the network sides To view detailed information for a particular protocol group move the cursor to its name then press SELECT For example if you select IP Protocols the IP Protocols screen Figure 4 6 is displayed E WebsHT TP Protocol TPud Error See Datar UDP ahn15s bmp Figure 4 6 IP Protocols Screen All o
60. ool see Setting Up and Connecting NetTool in Chapter 2 2 Run AutoTest see Running AutoTest in Chapter 3 for details To get information about the device press Ja PC icon in the connection diagram at the top of the screen The Station menu Figure 4 1 is displayed B Station Ki JL Link Contig oh Health gm Protocols Ei Addresses Used El Servers Used afqi6s bmp Figure 4 1 Station Menu 4 1 NetTool Users Manual Five basic types of information about the device or network can be selected from this menu e Link Config provides link pulse information If the VolP option is installed you can also find out POE voltage and pair information e Health lets you monitor frames and view errors that may indicate problems on the device or network e Protocols displays the protocols running on the device or network e Addresses Used enables you to verify a devices IP address information find out what VLAN a device belongs to and obtain CDP Cisco Discovery Protocol information e Servers Used lists the servers that the device is using 4 To select an item move the cursor to its name then press SELECT The following sections describe the detailed information you can obtain about your network 4 2 Viewing Link Status Information To view information about the cable and status of the connection display the Link Config screen Figure 4 2 m Link Config x ir 1 2 Advrtsd
61. ork When the phone goes off hook the boot information is cleared and transactions between the parties are recorded Call quality and QoS statistics are logged for both sides Figure 7 3 shows an example of a VoIP Log entry Depending on the length of a call the VoIP Log may have several pages of screens To page up or down press the Up or Down 4 arrow keys VoIP Log X LCallMar 123 136 137 2dd OFF HOE Keypad e Keypad bevpads enpad PROCEED ahn321s bmp Figure 7 3 VoIP Log Appendix C contains sample SCCP and SIP boot and call logs The logs are fully commented to give you idea of what happens during the boot process and while a call is in progress You can also look at the parameters that are tracked from the start of a call until the far end phone goes on hook 7 3 NetTool Users Manual Viewing Call Quality Measurements The VoIP Monitor tracks call quality RTP data To display the VoIP Monitor do the following 1 From the Main menu select VoIP Toolkit 2 On the VoIP Toolkit menu select VoIP Monitor to display the screen shown in Figure 7 4 VoIP Monitor Ki Phone RSC ahn309s bmp Figure 7 4 VoIP Monitor The VoIP Monitor includes RTP statistics and RTCP information when present for both the phone side and the network side You can view this data this while a call is in progress Table 7 1 defines the RTP and RTCP statistics seen on this screen 7 4 Table 7 1 Vo
62. orks Warranty support is available only if product is purchased through a Fluke Networks authorized sales outlet or Buyer has paid the applicable international price Fluke Networks reserves the right to invoice Buyer for importation costs of repair replacement parts when product purchased in one country is submitted for repair in another country Fluke Networks warranty obligation is limited at Fluke Networks option to refund of the purchase price free of charge repair or replace ment of a defective product which is returned to a Fluke Networks authorized service center within the warranty period To obtain warranty service contact your nearest Fluke Networks authorized service center to obtain return authorization information then send the product to that service center with a description of the difficulty postage and insurance prepaid FOB Destination Fluke Networks assumes no risk for damage in transit Following warranty repair the product will be returned to Buyer transportation prepaid FOB Destina tion If Fluke Networks determines that failure was caused by neglect misuse contamination alteration accident or abnormal condition of operation or handling or normal wear and tear of mechanical components Fluke Networks will provide an estimate of repair costs and ob tain authorization before commencing the work Following repair the product will be returned to the Buyer transportation prepaid and the Buyer will be billed for the
63. orrect but the checksum calculated by the receiving station does not match the checksum appended to the end of the frame Remedy Check the NIC card or NIC driver file This problem can also be caused by cabling or grounding problems Common Problems 6 Problems NetTool Detects Problem Excessive utilization seen also collisions Explanation Excessive utilization collisions is defined as a collision rate of greater than 5 percent or a utilization rate of greater than 70 percent Remedy If this problem exists everywhere on the network it is most likely caused by excessive traffic If it is isolated to a single PC you can suspect cabling For collisions suspect excessive traffic Reduce traffic on the network Check cabling Change the NIC card or switch hub port For utilization reduce the number of stations in the collision domain Install a switch Use a tool like the OptiView Network Analyzer Etherscope Network Assistant or OptiView Console to determine the top contributors to further segment this network 6 5 NetTool Users Manual NetWare 6 6 Problem Ethernet frame type mismatches Explanation For the PC and network to communicate they both must be configured for the same frame type 802 3 raw 802 2 Ethernet Il and SNAP You can configure a client for a single frame type A server can optionally be configured to recognize some or all frame types Remedy Use NetTool to determine the fra
64. quired For manual configuration make sure any IP address you assign to your NetTool is correct for the subnet you are on To manually assign an IP address 1 2 Select IP Setup to display the IP Setup screen Select Manual Setting Up and Connecting NetTool 2 Configuring NetTool Press the Down e arrow key to highlight the address you want to configure in this case NetTool then press SELECT to display the Edit screen Figure 2 3 HetTool IP Address 129 176 176 00 Select Update x ancel afq47s bmp Figure 2 3 Edit Screen Press the Up Aor Down e arrow key to supply a number in the first field in the address Then press the Right arrow key to advance to the next position Continue in this manner until the desired IP address is displayed 2 3 NetTool Users Manual 5 Press SELECT to save the IP address for NetTool NetTool lists the updated address with the subnet and router IP addresses 6 In like manner configure the subnet mask and router addresses NetTool assists you by entering the first parts of those addresses based on common addressing rules Creating a List of IP Addresses to Ping Select Ping List Editor to display a screen that lets you view edit or add to the lists of preset IP addresses that you previously downloaded using NetTool Toolkit You can add IP addresses to an existing list or edit an existing IP address within a list To add or edit an IP address 1 Pr
65. r 10 minutes elapses This helps to conserve the tester s battery power Adjust the display contrast Select Contrast and then select G to decrease the contrast or 8 to increase the contrast Set the time and date To supply a date and time 1 In the first field press the Up A or Down e arrow key to select the desired number Press the Right gt arrow key to advance to the next position After the desired time and date are displayed press SELECT Notes The format for time is hour minutes seconds The format for the date is month day year The clock does not self adjust for local time zones changes NetTool Blaster allows you to set the time for NetTool and even synchronize it with the PC clock check NetTool Blaster s Help for details Restore factory default settings Select Restore Defaults to restore all of NetTool s factory default settings Identifying Unwanted Protocols Select Unwanted Protocols to display a screen that allows you to identify protocols on the network that you want NetTool to warn you about This feature can be especially helpful to you during a network wide migration away from certain protocols If NetTool sees a particular protocol it reports it to you in the Problem Log Manually Assigning NetTool an IP Address Notes By default NetTool uses DHCP to obtain its IP address If you have DHCP on your network you can skip this section because no further configuration is re
66. repair and return transportation charges FOB Shipping Point THIS WARRANTY IS BUYER S SOLE AND EXCLUSIVE REMEDY AND IS IN LIEU OF ALL OTHER WARRANTIES EXPRESS OR IM PLIED INCLUDING BUT NOT LIMITED TO ANY IMPLIED WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE FLUKE NETWORKS SHALL NOT BE LIABLE FOR ANY SPECIAL INDIRECT INCIDENTAL OR CONSEQUENTIAL DAM AGES OR LOSSES INCLUDING LOSS OF DATA ARISING FROM ANY CAUSE OR THEORY Since some countries or states do not allow limitation of the term of an implied warranty or exclusion or limitation of incidental or consequen tial damages the limitations and exclusions of this warranty may not apply to every buyer If any provision of this Warranty is held invalid or ee by a court or other decision maker of competent jurisdiction such holding will not affect the validity or enforceability of any other provision 4 04 Fluke Networks PO Box 777 Everett WA 98206 0777 USA Table of Contents Chapter Title 1 hun m Using This VEG N iiaaaeaoe e E Whats ago NetTool AS LA Care and Maintenance ee ee Re Re Re Re Re Re Re Re ee Re ee ee Package ee OR N RR ON EE EE EE N Optional Accessories Lee ee ee RA Re Re Re Re Re ke ee ke ee ke ee ee Service and Adjustment AR ee Re ee ee ee ee ee Registering NetTool iese sees ee ee Ge RA Ge Ee ee ee ER ee ee ee ee ee AE Re ee ee Contacti
67. rotocols teen dieu ed Auden reete N OR RE OE OE N 4 7 Addresses Used Green 4 8 CDP Information sees ee ee ee Re ee Ee ee ee ee ee ee Re ee ee ee ee inne ee ee ee sss ee ee ee 4 9 VLAN Iniommatton ee EE EE EE EE EE EE EE EE GE Ee GE Ge Ee ee ee ee ee ee ee ee ee ee ee ee ee ee ee ee ee ee ee ee ee ee ee ee ee ee ee 4 10 Servers Used Screen RA ERA RA RA Re ee RA ee RA ee RR ee RA ee ee Bill Network TEE 5 2 Segment ID Screen ee ee Re ee AA ee AR ee RA Abe RA ee RA de ee RA ee Sia ee ek 5 8 Key Devices Screen EE EE HIR oae esie ee ee deed See S ME lee RE ER EE ER OR OE EE EE N 5 5 Ping Catalog KEE 5 6 Ping Results Screen iese ee RA RA RA RA ee AR Re ee RA ee ede ee RR ee Re ee Ee ee 6 1 Main Menu Showing Problems Selected sese 6 2 Problem Logs wo 7 1 Link Configuration SCIGen secco ete iritis E Ea 7 2 VLAN Port Iotormaton ee EE EE EE EE Ee aaa araa ee ee ee nenne Aa ee ee ee ee ee ee nnne ee ee ee nnne 7 8 VolP Ibog EE EE EE ge Ed FECE Oleo RET Em 8 1 Reporter Men 8 2 Save Report Screen Using This Manual This Users Manual is supplied with the NetTool Inline Network Tester hereafter referred to as NetTool to help you learn to use your new tester quickly and more efficiently The manual introduces you to the key features and operation of NetTool and shows you how to set it up and use it to resolve troublesome desktop to network connectivity problems Descr
68. rt customized 2 5mm stereo input jack Push button navigation of icon menu driven view Removable alkaline batteries or optional rechargeable NiMH batteries 12 5 cm x 7 8 cm x 4 8 cm 0 21 kg 0 46 Ibs One year Extended warranty available 2 on each side Link Utilization Collision and Error A 1 NetTool Users Manual Environmental Reguirements Operating Temperature Non Operating Temperature Approvals Approvals Accessories Electromagnetic Interference Certifications Connection to public telephone network A 2 10 C to 30 C with up to 95 Relative Humidity 10 C to 40 C with up to 75 Relative Humidity 20 C to 60 C The Fluke NetTool has the following approvals European Standard EN 60950 CSA CAN C22 2 No 950 and UL 1950 The optional Universal AC Adapter for NetTool has UL CSA and TUV approvals or other approvals valid in the USA Canada and Europe The Fluke NetTool complies with European standard EN 61326 Class B Complies with European CE directive EMC directive 89 336 EEC and low voltage directive 73 23 EEC NetTool should never be connected to the public telephone network Appendix B Sample VolP Call Logs Introduction This appendix contains sample SCCP and SIP call logs All of the logs contain running commentaries to familiarize you with the messaging and information that is exchanged during a call NetTool Users Manual Typical Cisco Skinny SCC
69. t DLC HP DLC Network Device If NetTool is connected to a single network device printer hub or a PC a diagram similar to that shown in Figure 3 4 is displayed Note In the diagram below the PC icon represents the single device be it a phone printer or PC LIE mr t Il E ahn317s eps Figure 3 4 Diagram of NetTool Connected to a PC Select the PC icon ia to find out more about the connected device Go to Chapter 4 Troubleshooting a Network Device Inline AutoTest Results The diagrams at the top of the screen can give you a quick indication of what is going on with your network Inline between a Device and the Network Caution When operating inline with a POE powered device connected to NetTool make sure that NetTool is not plugged into the AC adapter or into a serial device that is grounded or damage may occur to the equipment If NetTool is connected inline between a device and the network a diagram similar to that shown in Figure 3 5 is displayed at the top of the screen ahn020s eps Figure 3 5 Diagram of an Inline Connection AutoTest 3 Running AutoTest This screen reflects NetTool s connection to devices Note that the duplex settings and link speeds are underscored The underscore signifies a determined or negotiated result while the non underlined value signifies the advertised value The diagram also indicates the duplex settings see Table 3 2 for each device Duplex m
70. transmission C 9 NetTool Users Manual RTCP Real time Transport Control Protocol A protocol that provides insight on the performance and behavior of the RTP media stream Runts Typically defined as an Ethernet frame which is less than 64 bytes Depending on what device is counting the runts the frame check sequence may be good or bad SAP Service Advertising Protocol A NetWare protocol used to request and broadcast information about file servers print servers and other services on a network SCCP Skinny Client Control Protocol A Cisco proprietary VoIP control protocol that is used for control communications with the Cisco Call Manager Short Frame A frame less than the minimum legal size less than 64 bytes with a good frame check sequence In general you should not see Short Frames The mostly likely cause of a Short Frame is a faulty adapter card or driver Signal Noise Ratio The ratio of worst case received signal level to noise level measured at the receiver input expressed in dB The S N ratio may be expressed as NEXT dB Attenuation dB provided idle channel background noise is low Higher S N ratios provide better channel performance SIP Session Initiation Protocol A text based IP based protocol that is used for initiating a unicast session or for initiating and controlling a multicast session SNAP Subnetwork Access Protocol An IP protocol that is an extended version of the IEEE LAN lo
71. ts that are directed to a group of nodes rather than to a single node or all nodes This is contrasted to a broadcast packet which is directed to all nodes C 7 NetTool Users Manual NEXT Near end crosstalk crosstalk between two twisted pairs measured at the same end of the cable as the disturbing signal source NIC Network Interface Card A network interface card is the adapter card that plugs into a computer to provide a network connection Node Number Node number identifies the device of interest NVP Nominal Velocity of Propagation The speed that a pulse travels along a cable expressed as a percentage of the speed of light in a vacuum Packet A group of bits in a defined format containing a data message that is sent over a network C 8 Ping Packet Internet Groper ping is a common method of accessing devices on a network to see if they are active Ping sends a packet from one device attempts to pounce it off another device and listens for a reply A successful ping indicates that the network path to that device including the routers in between are up and functioning Protocol A language that a device uses to communicate on a network Examples of protocols are TCP IP or AppleTalk Primary Domain Controller A device that manages the common security policy and user account databases for a group of NetBIOS servers The election protocols are such that the primary domain controller
72. uration to match Common Problems 6 Problems NetTool Detects NetBIOS Problem ncorrect Workgroup or Domain configured on PC Explanation There are specific names and privileges needed for access to domains or workgroups The name is not correctly configured or privileges are not set up Remedy Determine what domain names and privileges are required and correct the PC s configuration Problem Unable to find Primary Domain Controller PDC for network Explanation These domain controllers act as gatekeepers for domain access If one of them is not found on the network no access can be granted Remedy Various 6 9 NetTool Users Manual Problem xxx xxx xxx xxx causing duplicate NetBIOS name Explanation Only one unique NetBIOS name is allowed on a domain Remedy The name specified on the PC needs to be changed to eliminate duplication Problem PC involved in MB elections Explanation NetTool sees packets from the PC that are generating master browser elections on the network This problem can be the source of excessive traffic and slow performance Remedy Take preventive measures within the PC s configuration to stop the PC from generating Master Browser elections Web Problem Unable to connect to HTTP proxy server Explanation The standard proxy port is 1080 The HTTP port is 80 on the server Remedy Correct the naming or port assignments in the setup area of the web browser softwar
73. value there Continue in this manner until the desired name of the report is displayed c Move the cursor to Save Report Then press SELECT to save If you inadvertently give two reports the same name on NetTool check the date time stamp when you view the reports to differentiate between them After you save a report you can use NetTool Toolkit to upload view and print it See the online Help for instructions Deleting or Overwriting a Report To delete or overwrite a report 1 From the Main menu select ToolKit 2 Move the cursor to Reporter then press SELECT to display the Reporter Menu Creating and Managing Reports Deleting or Overwriting a Report Do one of the following To delete all reports in the list select Delete All Reports To delete a single report select the desired report from the list Then select Delete Report To overwrite a report select the desired report Then select Overwrite Report 8 3 NetTool Users Manual Appendices Appendix Title Page Eheu ee T aub A 1 AE OE B 1 TA M C 1 Appendix A Specifications General Specifications Media Access Cable Tests Ports Interface Battery Dimensions Weight Warranty LED Indicators 4 10Base T and 100Base TX Internal wiremap cable length opens shorts and split pairs Shielded Hub NIC connector RJ 45 Serial po
74. we VLAH 1 Appliance WLAN 196 ahn319s bmp Figure 5 2 Segment ID Screen This screen gives you specific details about the connection It not only tells you the type of network NetTool is plugged into but also identifies the port number Because not all wall plate connectors are labeled this information can be especially useful for troubleshooting that is when a plate includes multiple jacks and you need to find out which connection is which This screen also tells you which VLAN NetTool is connected to If CDP information is found it is also reported on this screen Note The Segment ID screen is identical to the Addresses Used screen documented in Chapter 4 For information on VLANs and CDP see Obtaining a Device s IP Address Information in Chapter 4 Identifying Key Devices To find out what servers routers and printers are available on the network segment do the following 1 From the Main menu select Key Devices to display the Key Devices screen Figure 5 3 E Key Devices ka El IP Servers d El Netware Servers 1 EL HetBIOS Servers d Ey Routers 3 dd Printers 6 afqi3s bmp Figure 5 3 Key Devices Screen Troubleshooting Networks Finding Out About Your Network Use this information to verify whether a device is seen on the network If there is a configuration problem this list can help you pinpoint where the problem exists NetTool always attempts to display the highest level addr
75. whether it is between NetTool and the network itself Whether it is a cabling problem or a protocol mismatch NetTool helps you isolate a problem and keep things running Common Problems 6 Problems NetTool Detects Problems NetTool Detects This section lists by category the problems that NetTool can detect For each problem an explanation if needed is given and possible corrective steps are provided Every network is complex and the solutions given are meant to assist you with troubleshooting This is not an exhaustive troubleshooting guide Link Connectivity Problems The problems listed in this section involve cabling or cabling properties e Problem Speed mismatch Explanation The network is running at 10 Mbps and the PC is running at 100 Mbps or vice versa This speed mismatch prevents connection to the network Remedy Correct the speed mismatch by making sure both devices are running at the same speed 6 3 NetTool Users Manual 6 4 Problem Pair mismatch Explanation The link pulse is being sourced on the same wire pair by both sides This problem does not prevent connection to the network NetTool automatically swaps the pairs to correct this problem Remedy Check the cabling It may be plugged into an uplink port Also there may be a crossover cable between NetTool and the device Problem Duplex mismatch Explanation One side is running at half duplex and the other side is running at full duplex
76. work on one side and an Ethernet termination on the other If this configuration is found the sides are connected together for up to 20 seconds while NetTool searches for a link pulse This enables an Ethernet powered device to power up and source link to complete the connection If NetTool is connected between a Pot powered device and the network a diagram similar to the one shown in Figure 3 6 is displayed AutoTest 3 Running AutoTest ahn311s bmp Figure 3 6 Inline Connection Between a PoE Powered Device and the Network The diagram in Figure 3 6 also shows the speed of the link Icons represent duplex settings see Table 3 2 and link and polarity levels see Table 3 3 Status information is displayed in the area below AutoTest To get detailed results on the network select the Network icon For VolP specific information see Chapter 7 Verifying Voice over IP Service 3 7 NetTool Users Manual Chapter 4 Troubleshooting a Network Device Introduction NetTool can provide information that you can use to determine whether a device is configured properly for your network After you have confidence that all of the stations and devices on your network are configured correctly you can move on to evaluate the entire network This chapter shows you how to resolve device and configuration problems Verifying a Device s Configuration To find out whether a device is properly configured 1 Connect NetT

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