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    Check for SSB Alarms

    To check for SSB alarms:

    1. Display SSB Error Messages in the System Log File
    2. Display SSB Error Messages in the Chassis Daemon Log File

    Display SSB Error Messages in the System Log File

    Purpose

    To determine the details of the SSB error messages in the system log file. Periodically check the SYSLOG messages on the management console for messages sent by the SSB. During normal operation, the SSB notifies the Routing Engine of any errors it detects.

    Action

    To display the SSB error messages in the system log file, use the following CLI command:

    user@host> show log messages

    Sample Output

    user@host> show log messages
    Jul 10 13:28:45 myrouter /kernel: fxp1: media DOWN 100Mb / full-duplex
    Jul 10 13:28:45 myrouter /kernel: fxp1: media DOWN 10Mb / half-duplex
    Jul 10 13:28:45 myrouter /kernel: fxp1: media DOWN 100Mb / full-duplex
    Jul 10 13:28:45 myrouter /kernel: fxp1: link UP 100Mb / full-duplex
    Jul 10 13:28:45 myrouter rpd[564]: EVENT <UpDown> fxp1.0 index 1 <Up Broadcast Multicast> address #0 0.a0.a5.12.1d.6d
    Jul 10 13:28:45 myrouter mib2d[563]: SNMP_TRAP_LINK_UP: ifIndex 2, ifAdminStatus up(1), ifOperStatus up(1), ifName fxp1
    [...Output truncated...]
    

    Meaning

    The messages system log file records the time the failure or event occurred, the severity level, a code, and a message description. You can also use the show log messages | match ssb command to see error messages that are generated when an SSB fails or is offline. Use this information to diagnose a problem and to let the Juniper Networks Technical Assistance Center (JTAC) know what the error messages are and the router events that occurred before and after the problem. For more information about system log messages, see the Junos OS System Log Messages Reference.

    Display SSB Error Messages in the Chassis Daemon Log File

    Purpose

    To determine the details of the SSB error messages in the chassis daemon log file.

    Action

    To display the SSB error messages in the chassis daemon (chassisd) log file, use the following command:

    user@host> show log chassisd | match ssb

    Sample Output

    user@host> show log chassisd |match ssb
    Jul 10 13:27:28 SSB0 is now not present
    Jul 10 13:27:28 Assert reset on SSB0
    Jul 10 13:27:28 Turn on ethernet loop
    [...Output truncated...]
    

    Meaning

    The chassisd database provides the date, time, and a component status message. The chassisd database is dynamic. It is initialized at router startup and is updated when components are added or removed. You can search for multiple items in the chassisd log file by using the | match “item | item | item” command. For example, | match “ssb | kernel | tnp” is a search for error messages for the SSB, kernel, and Trivial Networking Protocol (TNP), and indicates communication issues between the Routing Engine and the Packet Forwarding Engine components.

     
     

    Published: 2012-08-20