From: Hobbs (deadheadblues@gmail.com)
Date: Sat Jan 31 2009 - 17:26:52 ARST
Karim,
1) This is my understanding, although I don't know the full capacity
of the boundary command:
ip igmp access-group filter IGMP requests, preventing or allowing
hosts from receiving traffic.
ip multicast boundary can filter PIM join request as well as prevent
traffic going to a multicast address. Depends on inbound or outbound
configuration. It can also filter auto-rp messages from groups.
You would likely use igmp access-group on ports where hosts reside,
and multicast boundary on ports where other routers connect.
2) Sounds about right. Make sure that R5 and R4 are PIM neighbors but
filter RP messages (or manually assign them) to actually separate the
domains.
3) IPv6 behaves a little differently, that's why there is the
"include-connected" option.
-hth. I recommend labbing these scenarios in dynamips or something to
actually see for yourself how these work
On Fri, Jan 30, 2009 at 12:16 PM, karim jamali <karim.jamali@gmail.com> wrote:
> Hello experts,
>
> I have a couple of questions to pose.I would really be thankful for any
> guidance and help from your side.
>
> 1) Concerning multicast:is there any difference between using ip igmp
> access-group/ip multicast boundary?If yes could you please explain to me?
>
> 2) I have a scenario having SW2,R5,R4,R6
>
> R5 AND R4 are configured to be *msdp peers* having the same rp-address
>
> SW2 and R6 are configured to use this RP address( *SW2 will associate to R5*
> ,*R6 will associate to R4*). Having the msdp peering relationship
> configured between R4 and R5, aren't these two multicast domains
> communicating together i.e. is it not true that R5 and R4 will communicate
> the information about clients and servers between them? is there an
> additional requirement?
>
> 3) *IPV6 redistribution*: When doing redistribution in IPV6 I noticed that
> option include-connected. Well as far as i know when RIP is redistributed
> into OSPF the following happens
>
> a) RIP Routes in the routing table will be redistributed
> b) Interfaces running RIP which show as connected will also be redistributed
>
> Is there any difference related to IPV6?
>
>
> Thank You for your time & effort:)
> --
> KJ
>
>
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