From: Tony Paterra (apaterra@gmail.com)
Date: Thu May 18 2006 - 11:52:42 ART
Reading Beau's multicast book and I can't get a clear understanding of
what happens when a multicast listener leaves a group in IGMPv2 (yes
I'm sorry I'm slow)... If you have RouterA as the IGMP Query Router
and a Host H1 on an Ethernet interface that is part of the multicast
group 224.1.1.10... My understanding is when H1 wants to leave the
group:
1. It sends a Leave Group message with the destination in the IP
packet of 224.0.0.2 (All Routers) w/ the Group Address field set to
224.1.1.10
2. The IGMP Query Router responds by sending a Group Specific Query
to 224.1.1.10 to see if there are still any active listeners out there
(who will respond with a Membership Report if they exist).
My question is what the packet looks like for the Group Specific
Query. What is the IP destination of that packet? My guess is that
it's 224.0.0.1 (All Hosts) with the Group Address of the IGMP layer
set to 224.1.1.10. Sorry, don't really know how I could simulate this
with debugs, etc... :-).
Thanks in advance,
-- Tony Paterra apaterra@gmail.com
This archive was generated by hypermail 2.1.4 : Thu Jun 01 2006 - 06:33:21 ART