Connectivity problems | Nortel Networks BM450 manual

Chapter 11 Frequently Asked Questions 95

Verify the current software revision

1Select Configuration > Sytem > Identification.

How do find the BCM450 System ID and Serial Number?

Use the following procedure to view the system ID and serial number.

Viewing the system ID and serial number

1Select Administration > General > Hardware Inventory.

2Select the BCM450 System tab.

Connectivity problems

This section answers the following question:

•What is an Ethernet loop, and how do I avoid creating one? on page 96

BCM450 Troubleshooting Guide

Image 95

Nortel Networks BM450 Connectivity problems, Verify the current software revision, Viewing the system ID and serial number

Contents

BCM450 Troubleshooting Guide Copyright 2008 Nortel Networks, All Rights Reserved Task List BCM450 Troubleshooting Guide NN40160-700 Task List Contents Contents Chapter Advanced Troubleshooting Chapter Understanding system messages Chapter Contacting Technical Support Organization IntroductionPurpose Audience Acronym Description AcronymsIntroduction List of acronyms Introduction List of acronyms Symbols and conventions used in this guide Related publications Introduction NN40160-700 Navigation Initial TroubleshootingProper installation and routine maintenance Network configuration Logical connections Device configuration informationInitial Troubleshooting Normal behavior on your network Initial Troubleshooting Initial Troubleshooting NN40160-700 Check LED indicators Hardware TroubleshootingTroubleshooting the BCM450 hardware Check the power source System status LEDs states and descriptions Hardware Troubleshooting Status Description LAN port LED locations MBM LED descriptions Power Status Description Status Descriptions DTM LED functions Verify the keycodes Check the wiring connectionsTo verify the keycodes using Element Manager Restart or shut down the system To verify the keycodes using Telset Function Description Impact Reset functionsTo restart the system Viewing the Post log file Power on self testHardware reset functions Example Bootloader.log file with no errors Testing basic hardware functionality To test the expansion unit To test the main unitTo troubleshoot the main unit To troubleshoot the expansion unit Testing an MBM To determine why the ATA 2 does not function Determining why an MBM does not appear in Element ManagerTroubleshooting the FEM Reset to factory settings To determine why there is no dial tone at the ATA2To check the ATA2 wiring Reset levels To perform a Level 2 reset software reset Monitoring the boot processTo perform a Level 1 reset configuration reset Hardware Troubleshooting Boot process with failed or missing memory Check the programming of lines and phones Software TroubleshootingVerify the software version Verify the keycodes Trunk/Line data Software TroubleshootingCheck line programming To check line programming Software Troubleshooting Trunk/Line Data main panel Sheet 2 Properties Software Troubleshooting Trunk/Line Data main panel Sheet 3 Line must be equipped with disconnect supervision from Properties line settings Sheet 1Trunk mode Dia l mode Preferences Software Troubleshooting Properties line settings Sheet 2Signaling Auto privacy Preferences details fields for lines Sheet 1 Answer mode Restrictions Restrictions Assigned DNs To restore data from an archiveRestoring system data Select Components to Restore panel opens To restore the factory configuration To view the BCM450 software inventory Obtaining software updatesVerify the software inventory Viewing the inventory of BCM450 software To obtain updates from the Nortel Technical Support Web Software Troubleshooting NN40160-700 Example 1 Cannot dial out from an analog trunk Advanced TroubleshootingTroubleshooting example Advanced Troubleshooting Example 2 Cannot dial out from a SIP or H323 VoIP trunk Advanced Troubleshooting Advanced Troubleshooting Advanced Troubleshooting Advanced Troubleshooting Example 3 IP set is not registering with the BCM450 Troubleshooting example 3b Troubleshooting example 3a Advanced Troubleshooting Example 5 Cannot dial out from digital trunk Troubleshooting example Advanced Troubleshooting Advanced Troubleshooting Advanced Troubleshooting Advanced Troubleshooting Troubleshooting example Select Configuration Resources Telephony Resources System is not processing calls Recovery trees Start-up profile fails Recovery trees Start-up profile fails Cannot access BCM450 through Element Manager Cannot access BCM450 through Element Manager NN40160-700 BCM450 shuts down unexpectedly Unexpected shutdown BCM450 Troubleshooting Guide Recovery trees NN40160-700 Applications available on BCM450 web Application User Administrator User ApplicationsDownloading Software Downloading software from the BCM450 webpage Downloading Software Applications available on BCM450 web To download software from the BCM450 webpage Downloading Software Downloading software from the Nortel web site Downloading Software NN40160-700 Status and Metrics Troubleshooting ToolsService Management Utilities Command Line InterfaceAccessing the CLI Troubleshooting Tools Using the Configuration CLI Accessing the CLI through a serial connectionAccessing the CLI through the OAM port Using the Maintenance CLI To set Release Reasons Alarms, logs, and trapsUnderstanding system messages Reporting for dropped calls Understanding system messages Release reasons Partner Bulletins Useful Troubleshooting LinksKnowledge and Solution Engine Using the Knowledge and Solution Engine Useful Troubleshooting Links To use the Knowledge and Solution Engine How do I back up the database? Frequently Asked QuestionsBackup, restore, and reset operations To perform a backup Frequently Asked Questions How do I restore the BCM450 from a previous backup?To restore data from the BCM450 Recovering a lost password Password protectionCompleting a warm or cold reset How do I recover a lost password for the BCM450? To view an alarm Fault managementHow do I view Alarms? Can I acknowledge and clear them? How do I capture the logs from the BCM450? To acknowledge an alarmUsing the Element Manager to transfer log files System and status information Using the BCM450 Web Page to transfer log files Capturing the current configuration How do I capture the current BCM450 configuration? Viewing specific process states How do I find the BCM450 system health?Viewing the system health How do I show specific process states? Viewing the system ID and serial number Connectivity problemsVerify the current software revision How do find the BCM450 System ID and Serial Number? Can I modify the IP address of the OAM port? What is an Ethernet loop, and how do I avoid creating one?What are the default IP addresses of the BCM450 ports? IP addresses Frequently Asked Questions Frequently Asked Questions NN40160-700 Gathering critical information Contacting Technical Support Contacting Technical Support Getting help over the phone from a Nortel Solutions CenterGetting Help from the Nortel Web site Getting help through a Nortel distributor or reseller Contacting Technical Support NN40160-700