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Trace Operations of the Interface Process

Learn about how to trace interface process operations using traceoptions.

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:
  2. Configure the traceoptions statement.
  3. Configure the no-remote-trace option to disable remote tracing.
  4. Configure the file filename option.
  5. Configure the files number option, match regular-expression option, size size option, and world-readable | no-world-readable option.
  6. Configure the tracing flag.
  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.

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 Administration Library for Routing Devices.

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