[Xorp-users] How to decide Unsolicited Report Interval in IGMPv3 XORP

Tushar Mehta tushar.mehta at einfochips.com
Mon Jul 21 22:15:50 PDT 2008


Can anyone tell me how i can find the Unsolicited Report Interval that 
is used when any IGMP host use while transmitting state change record?

according to the rfc-3376:
- To cover the possibility of the State-Change Report being missed by 
one or more multicast routers, it is retransmitted [Robustness
  Variable] - 1 more times, at intervals chosen at random from the range 
(0, [Unsolicited Report Interval]).

- Unsolicited Report Interval
   The Unsolicited Report Interval is the time between repetitions of a
   host's initial report of membership in a group.  Default: 1 second.

by default Unsolicited Report Interval should be 1 but XORP is not 
following it. it is picking up this interval randamly.

i m attaching the configuration file that i am using for my set up.


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