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HP AdvanceStack Router 245 Basic Troubleshooting Tips, Basic Troubleshooting Tips

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Troubleshooting

Basic Troubleshooting Tips

Basic Troubleshooting Tips

Some of the router’s console commands are used for the troubleshooting instructions in this chapter. Refer to “Connect a console” (page 1-10) for details on connecting to the console port. For information on the Configuration Editor and the Network Command Language Interpreter (NCL), refer to the User’s Guide for your router.

Make sure that you have a valid network topology. If you have trouble after a recent change to the network, switch back to the previous topology. If you no longer have trouble, the new topology is probably at fault.

Make sure that the router is plugged in and that cable connections are secure.

If the console port does not work, refer to “Connect a console” (page 1-10), and then check “Troubleshooting a Terminal or Modem Connection” (page 3-12).

Check LEDs. For descriptions, see “Interpreting Back-Panel LEDs” (page 2-6). LED patterns that indicate a router or network error are shown in tables 3-1 and 3-2 (pages 3-2 through 3-4).

This chapter describes basic troubleshooting for hardware problems indicated by the Power, Self-test, Fault, and Net Fail LEDs appearing on all routers described in this manual. For the operating diagnosis indicated by other LEDs on a router, refer to “Meanings of Port Status LEDs” (page 2-9).

Troubleshooting 3

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Contents

HP AdvanceStack Routers Installation Guide Page Preface Page Contents 1. Installation and Initial Setup 2. Features and General Hardware Operation 3. Troubleshooting A. Cables and Connectors B. Modem Configuration C. Specifications D. FDDI Cable Attachment Configurations Safety Information Regulatory Statements and Warranty Page Page C a u t i o n Phase 1: Ensure that You Have a Complete Set of Accessories Phase 1: Ensure that You Have a Complete Set of Accessories Accessory kit Power cord Cables: Documentation: Phase 2: Prepare the Network N o t e C o n s o l e N o t e Phase 3: Prepare the Router Hardware A. Mount the Router Single-HeightModels Figure 1-1.Rack Mount - Bracket Position Figure 1-3.Flat On Wall Double-HeightModels Figure 1-5.Rack Mount - Bracket Position Figure 1-7.Flat On Wall B. Connect a Console (Optional) C. Attach Network Cables Connecting a LAN to the AUI Interface: Figure 1-9.LAN AUI Connection Figure 1-10.Installing the AUI Retainer W a r n i n g Figure 1-12.BNC Connector -- Mid-Cable Figure 1-14.The Installed BNC Connector Cover Connecting a LAN to the Token Ring Interface Figure 1-15.LAN 802.5 Token Ring Connection Connecting an FDDI Ring to the FDDI Interface Figure 1-16.Connecting FDDI Without a Bypass Switch Using an Optional Bypass Switch to Connect an FDDI Ring : Figure 1-17.Connecting a Bypass Switch Page Connecting a WAN to the WAN Interface Figure 1-18.Connecting a WAN Interface D. Plug In and Verify the Router Hardware Figure 1-19.Example of Power and Self-TestLED Positions for Single-HeightModels Figure 1-20.Example of Power and Self-TestLED Positions for Double-HeightModels Figure 1-21.The Main Menu Screen Phase 4: Initialize and Verify the Router Figure 1-24.The Main Menu A. Create or Modify a Router Configuration An Overview of Your Configuration Tools Quick Configuration Configuration Editor B. Boot the Router Figure 1-25.The Default NCL Prompt Figure 1-26.The Copyright Screen C. Set the Correct Time and Date (Optional) D. Set Manager and User Passwords (Optional) Setting a Password: Figure 1-27.The NCL Screen with Default Prompt E. Verify Router Initialization Examine the Event Log Figure 1-29.The Event Log Line in the Main Menu Page Examine the Statistics Screens To Verify That the Network Links are Operational Figure 1-30.Example of the Statistics Screen Menu Page Examine the Bridging and Routing Tables Page Test Node Accessibility Testing Node Accessibility Page Features Router Ports Additional Features Interpreting Front-PanelLEDs Interpreting Back-PanelLEDs Page Meanings of Router Status LEDs Meanings of Port Status LEDs Tx (green) LED: Insert (Green) LED: Rx (green) LED: FDDI Port "Thru Figure 2-6.FDDI "Thru" and "Wrap A" Operation Thru (green): Wrap A and B (green) LEDs: Optical Bypass — Enabled (green): Testing the LEDs Resetting the Router, Clearing the Passwords, and Clearing the Router Resetting the router: Clearing the password(s): Clearing the router: Figure 2-7.Location of the Reset and Clear Buttons To Reset the Router To Clear the Manager and User Passwords To Clear the Router Page Initialization Sequence Page Introducing Router Troubleshooting Features Basic Troubleshooting Tips Interpreting LED Error Patterns Page General Procedure for Self-TestFailures Recoverable Self-TestFailures Non-Recoverable Self-TestFailures Verifying LED Operation Verifying LED Operation on the HP Router ER, TR, and SR Verifying LED Operation on Other Router Models Diagnostic Tests Testing the Router Only Testing the Router’s Ports Troubleshooting a Terminal or Modem Connection Adjust Baud Rate: Reset the Terminal: Test Router’s Console Port: Check the Configuration Testing a Transceiver on an Ethernet/802.3 Port N o t e : Testing a Link Page Ping Telnet Page Page HP Cables Other Standard Cables Cable and Connector Pin-Outs Router Console Port Connector Pin-Outs RS-232Modem Cable—Minimum Pin-Outs Page RS-232Cable for HP Portable (110) and Portable Plus—Minimum Pin-Outs Null-ModemAdapter for Use with Modem Cable—Minimum Pin-Outs Router AUI LAN Port Definition AUI Cable—Minimum Pin-Outs RS-449/422WAN Cable—Minimum Pin-Outs V.35 WAN Cable—Minimum Pin-Outs X.21 WAN Cable—Minimum Pin-Out RS-232WAN Cable—Minimum Pin-Outs Back-to-BackTest Cables HP 5061-2556 Back-to-BackTest Cable for 62-Pin Connector—Minimum Pin-Outs HP 5061-2557 Back-to-BackTest Cable for 62-Pin Connector—Minimum Pin-Outs Page Router Token Ring/802.5 LAN Port Definition FDDI Optical Bypass DIN Connector Pinouts (HP Part Number 5063-2488) FDDI Cable Loopback Connectors For a WAN Port For an FDDI Port Page HP 35031A Support Link HP 37212B Support Link HP 50759A Support Link Hayes 2400 Smartmodem Black Box V.32 9600 Async Page Physical (without brackets) Power Consumption Environmental Electromagnetic Emissions Acoustical (for Germany) Data Communications Specifications Page Page Page Dual-AttachStation (DAS) Single-AttachStation (SAS) Dual-HomedConnection Safety Symbols WARNING CAUTION Grounding Servicing Informations concernant la sécurité Symboles de sécurité AVERTISSEMENT ATTENTION Hinweise zur Sicherheit Sicherheitssymbole VORSICHT ACHTUNG Considerazioni sulla sicurezza Simboli di sicurezza PERICOLO ATTENZIONE Consideraciones sobre seguridad Símbolos de seguridad ADVERTENCIA PRECAUCION Page Regulatory Statements and Warranty FCC Statement (For U.S.A. Only) Federal Communications Commission Radio Frequency Interference Statement VCCI Class 2 (Japan Only) For the HP Router ER/TR/SR Warranty and European Community Declarations of Conformity Page Three-YearLimited Hardware Warranty Third-Party Products Gewährleistung Garantie Garanzia Software or Firmware Warranty Index