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    Recording IGMP Join and Leave Events

    To determine whether IGMP tuning is needed in a network, you can configure the routing device to record IGMP join and leave events. You can record events globally for the routing device or for individual interfaces.

    Table 1 describes the recordable IGMP events.

    Table 1: IGMP Event Messages

    ERRMSG Tag

    Definition

    RPD_IGMP_JOIN

    Records IGMP join events.

    RPD_IGMP_LEAVE

    Records IGMP leave events.

    RPD_IGMP_ACCOUNTING_ON

    Records when IGMP accounting is enabled on an IGMP interface.

    RPD_IGMP_ACCOUNTING_OFF

    Records when IGMP accounting is disabled on an IGMP interface.

    RPD_IGMP_MEMBERSHIP_TIMEOUT

    Records IGMP membership timeout events.

    To enable IGMP accounting:

    1. Enable accounting globally or on an IGMP interface. This example shows both options.
      [edit protocols igmp]user@host# set accountinguser@host# set interface fe-0/1/0.2 accounting
    2. Configure the events to be recorded and filter the events to a system log file with a descriptive filename, such as igmp-events.
      [edit system syslog file igmp-events]user@host# set any infouser@host# set match “.*RPD_IGMP_JOIN.* | .*RPD_IGMP_LEAVE.* | .*RPD_IGMP_ACCOUNTING.* | .*RPD_IGMP_MEMBERSHIP_TIMEOUT.*”
    3. Periodically archive the log file.

      This example rotates the file size when it reaches 100 KB and keeps three files.

      [edit system syslog file igmp-events]user@host# set archive size 100000user@host# set archive files 3user@host# set archive archive-sites “ftp://user@host1//var/tmp” password “anonymous”user@host# set archive archive-sites “ftp://user@host2//var/tmp” password “test”user@host# set archive transfer-interval 24user@host# set archive start-time 2011-01-07:12:30
    4. You can monitor the system log file as entries are added to the file by running the monitor start and monitor stop commands.
      user@host> monitor start igmp-events
      *** igmp-events ***
Apr 16 13:08:23  host mgd[16416]: UI_CMDLINE_READ_LINE: User 'user', command 'run monitor start igmp-events '
monitor
     

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    Modified: 2015-04-12

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