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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
 

Related Documentation

 

Published: 2014-07-23

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