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Tracing Operations of the Interface Process

To trace the operations of the router or switch interface process, dcd, perform the following steps:

  1. In configuration mode, go to the [edit interfaces] hierarchy level:
    [edit]user@host# edit interfaces
  2. Configure the traceoptions statement.
    [edit interfaces]user@host# edit traceoptions
  3. Configure the no-remote-trace option to disable remote tracing.
    [edit interfaces traceoptions]user@host# set no-remote-trace
  4. Configure the file filename option.
    [edit interfaces traceoptions]user@host# edit file
  5. Configure the files number option, match regular-expression option, size size option, and world-readable | no-world-readable option.
    [edit interfaces traceoptions file]user@host# set files numberuser@host# set match regular-expressionuser@host# set size sizeuser@host# set word-readable | no-world-readable
  6. Configure the tracing flag.
    [edit interfaces traceoptions]user@host# set flag flag-option
  7. Configure the disable option in flag flag-option statement to disable the tracing operation. You can use this option to disable a single operation when you have defined a broad group of tracing operations, such as all.
    [edit interfaces traceoptions]user@host# set flag flag-option disable

You can specify the following flags in the interfaces traceoptions statement:

  • all—Enable all configuration logging.
  • change-events—Log changes that produce configuration events.
  • gres-events—Log the events related to GRES.
  • resource-usage—Log the resource usage for different states.
  • config-states—Log the configuration state machine changes.
  • kernel—Log configuration IPC messages to kernel.
  • kernel-detail—Log details of configuration messages to kernel.
  • select-events—Log the events on select state machine.

By default, interface process operations are placed in the file named dcd and three 1-MB files of tracing information are maintained.

For general information about tracing, see the tracing and logging information in the Junos OS System Basics Configuration Guide.

Published: 2012-12-11