From: sabrina pittarel (sabri_esame@yahoo.com)
Date: Thu Aug 31 2006 - 01:07:39 ART
That's correct.
For example in a catalyst switch you could
you apply the igmp profile on an access port and the igmp access-group on the SVI (interface vlan)
Look at this example:
int vlan 10
ip igmp access-group 1
int f0/1
sw mode access
sw access vlan 10
ip igmp filter PROFILE
int f0/2
sw mode access
sw access vlan 10
IGMP join received on f0/1 will be filtered against the profile PROFILE first and against the access-list 1 later.
IGMP join received on f0/2 will be only filtered by the ACL.
Also the "ip igmp filter" prevents IGMP *snooping* (L2 mcast) from learning about group membership on a port and indirectly affects IGMP (L3 mcast) since it drops these joins.
The igmp access-group only prevents IGMP (L3 mcast) from learning about the group membership .
To summarize: one command only affect L3 multicast forwarding, the other affect L2 mcast switching and L3 mcast forwarding as well.
HTH
Sabrina
----- Original Message ----
From: Ivan <ivan@iip.net>
To: ccielab@groupstudy.com; Paul Thomas <paultf@eim.ae>
Sent: Wednesday, August 30, 2006 10:21:49 AM
Subject: Re: IP IGMP profile and Access group
In my understanding ip igmp profile used on switched port and ip igmp
access-group used on routed port.
On Wednesday 30 August 2006 20:02, Paul Thomas wrote:
> Hi,
>
> I don't understand the difference between --- IP IGMP profile and IP IGMP
> Access group.
>
> Can any one explain it in more detail.
> Thanks.
>
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-- Ivan
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