Re: Regarding Multicasting

 Dont forget that PIM=Protocol Independent Multicast hence it can work
fine with any underlying routing protocol so u can have the route to
the mcast source via any interface and with appropriate static mroute
command evry thing shud work fine.

The ip igmp join-group and ip pim rp-address are two mutually
exclusive commands , one can exist independently of the other . BUT in
ur scenario u will need to specify the ip pim rp-address if u have a
mcast source on one of the interfaces of the router OR ur router is a
transit router to the RP.

There also has to be an ip address on f0/1 as that interface tries to
simulate a client which replies to mcast pings hence it must have an
ip address to source replies from.

HTH

Regards ,

Peter.

On 6/2/09, Raghav Bhargava <raghavbhargava12_at_gmail.com> wrote:
> Hi Experts,
>
> I have couple of queries in Mulitcasting:-
>
> PIM-DM
>
> 1. If we have a route coming via Fast Ethernet as well as Serial Interface
> but it is preferred via Fast Ethernet due to low cost in OSPF. Now using PIM
> - DM while doing the RPF check we find that the route should come via Serial
> Interface, so we have 2 options there:-
>
> ----> Change the cost on Fast Ethernet link so that it prefers Serial
> interface *OR*
> ----> Configure a static mroute entry for that route pointing to the
> next hop which should be serial interface.
>
> Now lets say I use the static route option. when I configure my router
> everything works RPF check succeeds etc etc. What my query is should i see
> that route in the IGP Routing table to come via Serial Interface or Fast
> Ethernet interface coz earlier it was coming via Fast Ethernet ? Also
> whatever is the answer why??
>
>
> PIM- SM
>
> 1. We are using static RP configuration on all the routers . now lets say if
> on one of my routers I have 2 Fast ethernet interfaces i.e Fa0/0, Fa0/1. Now
> only Fa0/0 is configured for PIM- SM. My questions are:-
>
> -------> If I configure IGMP Join group 224.1.1.1 on this router , I
> will also have to configure the configuration for static RP i.e ip pim
> rp-address x.x.x.x 1 along with the access-list permitting that multicast
> IP.
> Because what i know is that when we use static RP we have to configure it on
> all the Routers coz otherwise the Routers will not know who the RP is . So
> even If we configure the IGMP join-group command on this router do we also
> need the static RP config. Please correct me If I am wrong??
>
> -------> Second question is since PIm- SM is not enable on Fa0/1 , can
> I configure IGMP-JOIN group command on this interface. Also something to
> note here is there is no ip address. Can we do this???
> I am kinda confused in this one.
>
> Appreciate all the help ..:)
>
>
> --
> Warm Regards
> Raghav
>
>
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Received on Tue Jun 02 2009 - 07:23:04 ART