Step 2: Display Sent or Received IS-IS Protocol Packets

Action

To configure the tracing for only sent or received IS-IS protocol packets, follow these steps:

1. In configuration mode, go to the following hierarchy level:

[edit]

user@host# edit protocol isis traceoptions

2. Configure the flag to display sent, received, or both sent and received packets:

[edit protocols isis traceoptions]

user@host# set flag hello send

or

[edit protocols isis traceoptions]

user@host# set flag hello receive

or

[edit protocols isis traceoptions]

user@host# set flag hello

3. Verify the configuration:

user@host# show

For example:

[edit protocols isis traceoptions]

user@host# show 

file isislog size 10k files 10;

flag hello send;

or

[edit protocols isis traceoptions]

user@host# show 

file isislog size 10k files 10;

flag hello receive;

or

[edit protocols isis traceoptions]

user@host# show 

file isislog size 10k files 10;

flag hello send receive;

4. Commit the configuration:

user@host# commit

5. View the contents of the file containing the detailed messages:

user@host# run show log filename

For example:

user@host# run show log isislog

Sep 27 18:17:01 ISIS periodic xmit to 01:80:c2:00:00:15 (IFL 2)

Sep 27 18:17:01 ISIS periodic xmit to 01:80:c2:00:00:14 (IFL 2)

Sep 27 18:17:03 ISIS periodic xmit to 01:80:c2:00:00:15 (IFL 2)

Sep 27 18:17:04 ISIS periodic xmit to 01:80:c2:00:00:14 (IFL 2)

Sep 27 18:17:06 ISIS L2 hello from 0000.0000.0008 (IFL 2) absorbed

Sep 27 18:17:06 ISIS periodic xmit to 01:80:c2:00:00:15 (IFL 2)

Sep 27 18:17:06 ISIS L1 hello from 0000.0000.0008 (IFL 2) absorbed