Technical Documentation

Analyze IS-IS-Link State Packets in Detail

Action

To analyze IS-IS link-state packets (LSPs) in detail, follow these steps:

  1. In configuration mode, go to the following hierarchy level:
    [edit]user@host# edit protocols isis traceoptions
  2. Configure IS-IS open messages:
    [edit protocols isis traceoptions]user@host# set flag lsp detail
  3. Verify the configuration:
    user@host# show

    For example:

    [edit protocols isis traceoptions]
    user@host# show 
    file isislog size 5m world-readable;
    flag error;
    flag lsp detail;
  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
    Nov 28 20:17:24 Received L2 LSP abc-core-01.00-00, interface so-1/1/0.0
    Nov 28 20:17:24     from abc-core-01
    Nov 28 20:17:24     sequence 0x1c4f9, checksum 0x9fea, lifetime 1199
    Nov 28 20:17:24     max area 0, length 426
    Nov 28 20:17:24     no partition repair, no database overload
    Nov 28 20:17:24     IS type 3, metric type 0
    Nov 28 20:17:24     area address 99.0908 (1)
    Nov 28 20:17:24     speaks CLNP
    Nov 28 20:17:24     speaks IP
    Nov 28 20:17:24     dyn hostname abc-core-01
    Nov 28 20:17:24     IP address 10.10.134.11
    Nov 28 20:17:24    IP prefix: 10.10.10.0/30 metric 1 up
    Nov 28 20:17:24    IP prefix: 10.10.10.4/30 metric 5 up
    Nov 28 20:17:24    IP prefix: 10.10.10.56/30 metric 5 up
    Nov 28 20:17:24    IP prefix: 10.10.10.52/30 metric 1 up
    Nov 28 20:17:24    IP prefix: 10.10.10.64/30 metric 5 up
    Nov 28 20:17:24    IP prefix: 10.10.10.20/30 metric 5 up
    Nov 28 20:17:24    IP prefix: 10.10.10.28/30 metric 5 up
    Nov 28 20:17:24    IP prefix: 10.10.10.44/30 metric 5 up
    Nov 28 20:17:24     IP prefix 10.10.10.0 255.255.255.252
    Nov 28 20:17:24     internal, metrics: default 1
    Nov 28 20:17:24     IP prefix 10.10.10.4 255.255.255.252
    Nov 28 20:17:24     internal, metrics: default 5
    Nov 28 20:17:24     IP prefix 10.10.10.56 255.255.255.252
    Nov 28 20:17:24     internal, metrics: default 5
    Nov 28 20:17:24     IP prefix 10.10.10.52 255.255.255.252
    Nov 28 20:17:24     internal, metrics: default 1
    Nov 28 20:17:24     IP prefix 10.10.10.64 255.255.255.252
    Nov 28 20:17:24     internal, metrics: default 5
    Nov 28 20:17:24     IP prefix 10.10.10.20 255.255.255.252
    Nov 28 20:17:24     internal, metrics: default 5
    Nov 28 20:17:24     IP prefix 10.10.10.28 255.255.255.252
    Nov 28 20:17:24     internal, metrics: default 5
    Nov 28 20:17:24     IP prefix 10.10.10.44 255.255.255.252
    Nov 28 20:17:24     internal, metrics: default 5
    Nov 28 20:17:24     IS neighbors:
    Nov 28 20:17:24     IS neighbor abc-core-02.00
    Nov 28 20:17:24     internal, metrics: default 1
    [...Output truncated...]
    Nov 28 20:17:24     internal, metrics: default 5
    Nov 28 20:17:24     IS neighbor abc-brdr-01.00
    Nov 28 20:17:24     internal, metrics: default 5
    Nov 28 20:17:24     IS neighbor abc-core-02.00, metric: 1
    Nov 28 20:17:24     IS neighbor abc-esr-02.00, metric: 5
    Nov 28 20:17:24     IS neighbor abc-edge-03.00, metric: 5
    Nov 28 20:17:24     IS neighbor abc-edge-01.00, metric: 5
    Nov 28 20:17:24     IS neighbor abc-edge-02.00, metric: 5
    Nov 28 20:17:24     IS neighbor abc-brdr-01.00, metric: 5
    Nov 28 20:17:24    IP prefix: 10.10.134.11/32 metric 0 up
    Nov 28 20:17:24    IP prefix: 10.11.0.0/16 metric 5 up
    Nov 28 20:17:24    IP prefix: 10.211.0.0/16 metric 0 up
    Nov 28 20:17:24     IP prefix 10.10.134.11 255.255.255.255
    Nov 28 20:17:24     internal, metrics: default 0
    Nov 28 20:17:24     IP prefix 10.11.0.0 255.255.0.0
    Nov 28 20:17:24     internal, metrics: default 5
    Nov 28 20:17:24     IP prefix 10.211.0.0 255.255.0.0
    Nov 28 20:17:24     internal, metrics: default 0
    Nov 28 20:17:24     Updating LSP
    Nov 28 20:17:24 Updating L2 LSP abc-core-01.00-00 in TED
    Nov 28 20:17:24 Analyzing subtlv's for abc-core-02.00
    Nov 28 20:17:24 Analysis complete
    Nov 28 20:17:24 Analyzing subtlv's for abc-esr-02.00
    Nov 28 20:17:24 Analysis complete
    Nov 28 20:17:24 Analyzing subtlv's for abc-edge-03.00
    Nov 28 20:17:24 Analysis complete
    Nov 28 20:17:24 Analyzing subtlv's for abc-edge-01.00
    Nov 28 20:17:24 Analysis complete
    Nov 28 20:17:24 Analyzing subtlv's for abc-edge-02.00
    Nov 28 20:17:24 Analysis complete
    Nov 28 20:17:24 Analyzing subtlv's for abc-brdr-01.00
    Nov 28 20:17:24 Analysis complete
    Nov 28 20:17:24     Scheduling L2 LSP abc-core-01.00-00 sequence 0x1c4f9 on interface so-1/1/1.0

Published: 2010-01-25