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Step 2: Analyze OSPF Link-State Advertisement Packets in Detail

Action

To analyze OSPF link-state advertisement packets in detail, follow these steps:

  1. In configuration mode, go to the following hierarchy level:
    2. [edit]

    user@host# edit protocols ospf traceoptions
  2. Configure OSPF link-state packages:
    3. [edit protocols ospf traceoptions]

    user@host# set flag lsa-update detail
  3. Verify the configuration:
    4. user@host# show

For example:

[edit protocols ospf traceoptions]

user@host# show 

file ospf size 5m world-readable;

flag hello detail;

flag lsa-update detail;
  1. Commit the configuration:
    2. user@host# commit
  2. View the contents of the file containing the detailed messages:
    3. user@host# run show log filename

For example:

user@host# run show log ospf

Dec  2 16:23:47 OSPF sent LSUpdate (4) -> 224.0.0.5 (so-1/1/0.0)

Dec  2 16:23:47   Version 2, length 196, ID 10.0.0.6, area 0.0.0.0

Dec  2 16:23:47   checksum 0xcc46, authtype 0

Dec  2 16:23:47   adv count 6

Dec  2 16:23:47 OSPF sent LSUpdate (4) -> 224.0.0.5 (so-1/1/1.0)

Dec  2 16:23:47   Version 2, length 196, ID 10.0.0.6, area 0.0.0.0

Dec  2 16:23:47   checksum 0xcc46, authtype 0

Dec  2 16:23:47   adv count 6
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