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NetTool
Users Manual

6-8

•

Problem: DHCP server issuing IP address that
causes duplicate IP on network.

Explanation: The DHCP server in question 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

•

Problem: No DNS server found on network to resolve
names.

Explanation: The PC is configured to use DNS
(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: Incorrect WINS server xxx.xxx.xxx.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.

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Содержание Network Tester

Страница 1: ...NetTool 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...

Страница 2: ...place 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 s...

Страница 3: ...enance 1 2 Package Contents 1 2 Optional Accessories 1 3 Service and Adjustment 1 3 Registering NetTool 1 3 Contacting Fluke Networks 1 4 PC NetTool Link Utility Programs 1 4 NetTool Blaster 1 4 NetTo...

Страница 4: ...s Software 1 10 2 Setting Up and Connecting NetTool 2 1 Introduction 2 1 Configuring NetTool 2 1 Changing the System Settings 2 2 Identifying Unwanted Protocols 2 3 Manually Assigning NetTool an IP A...

Страница 5: ...e Network 3 5 Inline between a PoE Powered Device and the Network 3 7 4 Troubleshooting a Network Device 4 1 Introduction 4 1 Verifying a Device s Configuration 4 1 Viewing Link Status Information 4 2...

Страница 6: ...Problem Log Display 6 2 Things to Consider 6 3 Problems NetTool Detects 6 3 Link Connectivity Problems 6 3 Network Problems 6 5 Health Problems 6 5 NetWare 6 6 TCP IP 6 7 Host Configuration 6 7 Name R...

Страница 7: ...oIP Log 7 3 Viewing Call Quality Measurements 7 4 8 Creating and Managing Reports 8 1 Introduction 8 1 Before You Begin 8 1 Creating a Report 8 2 Deleting or Overwriting a Report 8 3 Appendices A Spec...

Страница 8: ...NetTool Users Manual vi...

Страница 9: ...Page 1 1 NetTool s Device Icons 1 7 3 1 Services NetTool Discovers 3 4 3 2 Duplex Settings 3 5 3 3 Link and Polarity Level 3 6 5 1 Ping Status Icons 5 6 6 1 Elements of the Problem Log 6 2 7 1 VoIP M...

Страница 10: ...NetTool Users Manual viii...

Страница 11: ...AC Adapter 1 9 2 1 NetTool Menu 2 1 2 2 Settings Menu 2 2 2 3 Edit Screen 2 3 2 4 Single Ended Connection into a Wall Jack 2 6 2 5 Single Ended Connection to a PC 2 6 2 6 Inline Connection between a P...

Страница 12: ...creen 4 5 4 7 Addresses Used Screen 4 6 4 8 CDP Information 4 6 4 9 VLAN Information 4 7 4 10 Servers Used Screen 4 7 5 1 Network Menu 5 1 5 2 Segment ID Screen 5 2 5 3 Key Devices Screen 5 3 5 4 Ping...

Страница 13: ...blesome desktop to network connectivity problems Descriptions of test functions along with illustrations of typical menus and result screens are provided to assist you with the operation of the tester...

Страница 14: ...nstallations by testing for length shorts split pairs or opens including pin to pin wiremapping Check a PC s configuration and identify its network Ping network devices to verify connectivity Listen t...

Страница 15: ...site 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...

Страница 16: ...s 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 o...

Страница 17: ...ty programs from the Start Programs Fluke Networks menu Getting Acquainted This section shows you how to turn NetTool on and off and acquaints you with the functions of the tester s buttons navigation...

Страница 18: ...ollision and Error LED Link Collision and Error LED LED Utilization LED Utilization ahn314f eps Figure 1 3 NetTool LEDs Link Collision Error LED A tri colored LED with these states Green a link pulse...

Страница 19: ...ing it you can drill down to find out more information about the device Table 1 1 NetTool s Device Icons Icon Menu Network NetTool Setup Station Main Menu NetTool s Main menu is located under the conn...

Страница 20: ...n arrow keys cb Left Right arrow keys _ 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 SE...

Страница 21: ...mpartment 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 th...

Страница 22: ...vailable 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 t...

Страница 23: ...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 Configuri...

Страница 24: ...s helps to conserve the tester s battery power Adjust the display contrast Select Contrast and then select to decrease the contrast or to increase the contrast Set the time and date To supply a date a...

Страница 25: ...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 required For manual configuration make sure any IP ad...

Страница 26: ...existing list or edit an existing IP address within a list To add or edit an IP address 1 Press an arrow key to move the cursor to the desired IP address 2 Press SELECT 3 Do one of the following To a...

Страница 27: ...J 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 To connect the wiremap adapter 1 Plug one end of the cable i...

Страница 28: ...k drop for activity and to find out what services lie on the other side When connected in similar fashion to a hub or switch NetTool can simulate a PC and perform tests like Ping Figure 2 5 shows NetT...

Страница 29: ...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...

Страница 30: ...Save screens Upload and download PING catalogs Upload Report data Use the Link Utility programs supplied on the CD ROM see PC NetTool Link Utility Programs To connect NetTool use the supplied serial c...

Страница 31: ...s you how to run AutoTest and describes the results this test provides Running AutoTest To run AutoTest 1 Connect NetTool using one of the connection schemes documented under Connecting NetTool in Cha...

Страница 32: ...d Splits To find out about the cable move the cursor to the Spool 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 N...

Страница 33: ...ot designed to be used on the public telephone network Disconnect immediately NetTool cannot reliably discover Telco information with the AC adapter or serial cable connected It also detects ISDN sign...

Страница 34: ...rollers 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 DL...

Страница 35: ...ected 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 This screen ref...

Страница 36: ...rity Link level is displayed by the height of the waveform Under the NetTool icon you can also obtain status information for the cables connected to NetTool For example ahn235f eps The tester detects...

Страница 37: ...is 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...

Страница 38: ...NetTool Users Manual 3 8...

Страница 39: ...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...

Страница 40: ...en press SELECT The following sections describe the detailed information you can obtain about your network Viewing Link Status Information To view information about the cable and status of the connect...

Страница 41: ...or statistics can help you isolate device and network related problems The Health screen shown in Figure 4 3 displays cumulative activity since you last ran AutoTest You may also want take a look at w...

Страница 42: ...zation 5 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 sec...

Страница 43: ...here are any protocol configuration mismatches See Table 3 1 for a list of the protocols that NetTool can discover The network icon appears next to the name of a protocol group to indicate that there...

Страница 44: ...displays the best discovered name for the device as well as its IP IPX and MAC address 2 CDP Cisco Discovery Protocol information if found is also given on this screen Press the Down b arrow key to lo...

Страница 45: ...can monitor VLANs during a VoIP call to see which ones are being used see entries in the VoIP Logs in Appendix B Identifying Network Resources To find out what network resources are being used select...

Страница 46: ...NetTool Users Manual 4 8...

Страница 47: ...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 the network NetTool is pl...

Страница 48: ...hernet 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...

Страница 49: ...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 afq13s bmp Figure 5 3 Key Devices Screen Use this information to...

Страница 50: ...s 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 NetT...

Страница 51: ...r 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 softw...

Страница 52: ...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 Pi...

Страница 53: ...mply 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 acc...

Страница 54: ...A single exclamation mark indicates a low level of severity while two and three exclamation marks indicate a moderate and high level of severity respectively Each problem listed has a unique problem I...

Страница 55: ...see on which side the problem exists that is whether it is a problem between the PC and NetTool or whether it is between NetTool and the network itself Whether it is a cabling problem or a protocol mi...

Страница 56: ...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...

Страница 57: ...um 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...

Страница 58: ...r 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...

Страница 59: ...server is giving the correct addresses Problem Duplicate IP detected Explanation NetTool has detected a duplicate IP address configured on a remote device You should never have duplicate IPs running o...

Страница 60: ...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 mult...

Страница 61: ...ails of the WINS server by accessing the Key Devices list Change the PC s configuration to match NetBIOS Problem Incorrect Workgroup or Domain configured on PC Explanation There are specific names and...

Страница 62: ...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 software Email Problem Unable to connect to SMTP m...

Страница 63: ...correctly configured on the PC Access NetTool s Key Devices list to view information about this server Printer Problem Unable to connect to IP print spool server Explanation NetTool is detecting that...

Страница 64: ...able 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 Prob...

Страница 65: ...e Keeping your NetTool updated 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 Running AutoTest...

Страница 66: ...ted every two seconds Viewing VLAN and CDP Information NetTool reports VLAN information and CDP information if found for both the phone side and the network side To look at the phone side select the P...

Страница 67: ...onitor a call that is in progress During the boot process the log captures the exchanges between the phone and the network When the phone goes off hook the boot information is cleared and transactions...

Страница 68: ...P RTCP Statistics Statistic Meaning 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 RTP jttr The...

Страница 69: ...l Support Escalate trouble tickets by documenting a problem device View and print data you gather related to setups moves adds or changes This chapter shows you how to create and manage your reports B...

Страница 70: ...Menu 4 Move the cursor to an empty slot Then press SELECT to display a screen similar to that shown in Figure 8 2 afq53s bmp Figure 8 2 Save Report Screen 5 To supply a name for the report Note You ca...

Страница 71: ...tTool 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...

Страница 72: ...NetTool Users Manual 8 4...

Страница 73: ...Appendices Appendix Title Page Specifications A 1 VoIP Logs B 1 Glossary C 1...

Страница 74: ......

Страница 75: ...NIC connector RJ 45 Serial port customized 2 5mm stereo input jack Interface Push button navigation of icon menu driven view Battery Removable alkaline batteries or optional rechargeable NiMH batteri...

Страница 76: ...AN C22 2 No 950 and UL 1950 Approvals Accessories The optional Universal AC Adapter for NetTool has UL CSA and T V approvals or other approvals valid in the USA Canada and Europe Electromagnetic Inter...

Страница 77: ...mple VoIP 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 exchang...

Страница 78: ...equests the offered address the server acknowledges the request DNS req 003094c4426f CiscoCM1 danahertm com DNS response 129 196 197 244 TFTP file request OS79XX TXT TFTP file request SEP003094C4426F...

Страница 79: ...file request SEP003094C4426F cnf xml TFTP file request RINGLIST XML TFTP file request DISTINCTIVERINGLIST XML CDP SEP003094C4426F Cisco IP Phone 7960 the Call Manager acknowledges the registration th...

Страница 80: ...ion starting with the phone going OFF HOOK CallMgr 129 196 197 244 OFF HOOK Keypad 2 Keypad 0 Keypad 0 Keypad 2 Call manager IP address Phone goes off hook x2002 is dialed PROCEED 2000 Blade Lab 2002...

Страница 81: ...6 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 RTP cnt 475frms phone 1 stats the...

Страница 82: ...NetTool Users Manual B 6 Typical Cisco Skinny SCCP Call Log continued RTP cnt 476fr Jitter 1ms Arrival Avg 20ms Min 19ms Max 20ms Drop 0fr DropBurst 0s Call Complete phone 2 stats...

Страница 83: ...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...

Страница 84: ...e 192 015 192 015 the phone looks up the FTP file server the DNS server responds with the IP address TFTP file request uObE8NkRvq spa000F66FC9 REGISTER sip atlas4 atla 200 OK REGISTER sip atlas4 atla...

Страница 85: ...12436 ACK sip 17195983842 216 Call Setup 213ms the gateway tries connecting the far end is ringing we have a connection the RTP port number to be used the call setup time RTP streaming 129 196 196 20...

Страница 86: ...DropBurst 21ms phone 1 stats the number of RTP frames the inter frame arrival jitter the average arrival of the frames the minimum and maximum inter arrival time the number of dropped frames the long...

Страница 87: ...the implementation of the IEEE 802 3 Ethernet standard on thin coaxial cable The maximum segment length is 185 meters 10BASE5 Sometimes called ThickLAN 10BASE5 is the implementation of the IEEE 802 3...

Страница 88: ...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 stan...

Страница 89: ...ocol A bridge evaluates source and destination addresses to pass only frames that have a destination on the connecting network Broadcast A message that is addressed to all stations on a network For Et...

Страница 90: ...generated by signal coupling between wires in a multiwire cable CSMA CD Carrier Sense Multiple Access with Collision Detection In CSMA CD each node or station has equal access to the network Before tr...

Страница 91: ...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 Ethernet Ethernet is a 10 Mbps to...

Страница 92: ...BASE 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 u...

Страница 93: ...isions 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 great...

Страница 94: ...ng a data message that is sent over a network 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 attemp...

Страница 95: ...der to communicate with machines on other subnets Mis identified gateways are a common problem for manually configured IP settings RJ 45 Connector A modular connector used for UTP wiring The RJ 45 con...

Страница 96: ...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 sh...

Страница 97: ...imination characteristics of twisted pair wiring and produces crosstalk Use a single twisted pair for Transmit and another twisted pair for Receive to minimize crosstalk Subnet A subnet is a section o...

Страница 98: ...apter 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...

Страница 99: ...ng on 1 5 battery installing 1 9 level indicator 2 2 C care and maintenance 1 2 connecting NetTool 2 5 D date time setting 2 2 DHCP 2 3 duplex settings 3 5 E environmental requirements A 2 equipment s...

Страница 100: ...3 reports creating 8 2 service and adjustment 1 3 services discovered 3 4 specifications A 1 turning on off 1 5 NetTool Blaster 1 4 NetTool Toolkit 1 4 Network menu 5 1 P patch cable connecting 2 5 PC...

Страница 101: ...screen 4 7 single ended connection 2 5 specifications A 1 Station menu 4 1 T telephone numbers Fluke Networks 1 4 U Unwanted Protocols screen 2 3 Up Down arrow keys 1 8 V VLAN information 7 2 VoIP Voi...

Страница 102: ...NetTool Users Manual 4...

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