[c-nsp] VRF-Lite & Multicast question

Antonio Querubin tony at lava.net
Tue Jul 8 17:12:03 EDT 2008


On Tue, 8 Jul 2008, Mihai Tanasescu wrote:

> I have just started studying multicast for accomplishing a task that I've 
> been giving and don't know where / what I am doing wrong.
>
>
> My setup is something like the following:
>
>
> RP ---> Router A --- iBGP ---> Router B --- eBGP --> Router C (vrf-lite)
>
>
> between Router B and Router C I have 5 links (4 are vrf-lite in Router C, the 
> 5th is in the global table and use for MPLS ldp).
>
>
> I have configured on each router:
> ip multicast-routing (in C for example for both global and VRF) , ip pim 
> sparse-dense-mode on interfaces and the RP.
>
>
> If I connect with a cable in Router A I can view the multicast stream.
> Same if I connect in Router B.
>
>
> But in Router C it doesn't work (neither in the global table, neither in the 
> VRFs from vrf-lite implementation).
>
>
> Can you help with an advice or what I could be doing wrong ? (I'm just a 
> beginner/newbie when it comes to mcast)

Do you have an RP on the right-hand-side of your diagram and do you have 
MSDP peering running between the left and right to distribute source info?

Antonio Querubin
whois:  AQ7-ARIN


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