From: Geert Nijs (Geert.Nijs@simac.be)
Date: Tue Feb 26 2008 - 13:04:57 ARST
Actually they are completely different.
ip igmp access-group acts on IGMP packets at the edge and determines which groups a client can join by determining which IGMP membership packets the switch will accept.
ip multicast boundary acts on the actual multicast stream packets and determines which multicast packets will pass the boundary by looking at the multicast destination address.
Certain destination addresses can be filtered using ACLs. If needed, it can also filter auto-rp messages to remove the same groups from the auto-rp advertisements.
regards,
Geert
________________________________________
From: nobody@groupstudy.com [nobody@groupstudy.com] On Behalf Of Andy [and123and@googlemail.com]
Sent: 26 February 2008 14:43
To: ccie forum
Subject: "ip multicast boundary" v "ip igmp access-group"
Hi
the two commands below kinda acheive the same thing, dont they? What are the
differences and when to use one over the other.
ip multicast boundary
ip igmp access-group
Thanks
-A
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