From: ehiwe peter (ccie.in.nigeria@gmail.com)
Date: Fri Aug 08 2008 - 16:59:43 ART
igmp filter is similar to ip igmp access-group .
the ip igmp filter is implemented on switches but the ip igmp access-group
is implemented on routers.
The igmp profile specifies the multicast groups to be filtered the same way
the acl does in igmp access-group.
But they(igmp filter,ip igmp access-group) both prevent hosts on a lan from
joining(igmp) the multicast groups specified in the acl and igmp profiles.
But the other two methods filters or creates boundaries for multicast
traffic in any location of the multicast network unlike the igmp filter and
igmp acces-group which are both limited to the lan segment.
On 8/8/08, Doan Dung Chi <dungchid@gmail.com> wrote:
>
> Hi GS !
>
> To filtering multicast stream, we have some methods:
> 1. ip igmp access-group {ACL}
> 2. ip multicast boundary {ACL} in/out
> 3. ip access-group {ACL}
> 4. ip igmp filter {profile-number}
>
> Actually, I always confuse when choosing the method 1 & 2 & 3. With method
> 4,
> I don't understand how it work? And which situation is used ?. In my
> understand that:
> - "ip igmp access-group": filter base on "inbound direction"
> - "ip multicast boundary": filter base on "inbound/outboud direction"
> - "ip access-group": filter base on "inbound/outbound" (this method is not
> common)
> - "ip igmp filter {profile} : I don't understand this method. I read on
> DocCD
> "You can control the distribution of multicast services, such as IP/TV,
> based
> on some type of subscription or service plan. You might also want to limit
> the
> number of multicast groups to which a user on a switch port can belong."
>
> Can anyone clarify 4 above methods, please. (which scenario is used for
> each
> method)
>
> Thanks
>
> Chidd
>
>
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