[c-nsp] VRF-Lite & Multicast question

[Alley Hasan]

Some of the basic things to check:
- Everything should be pingible from everywhere, including the sender
and reciver. Layer 3 connectivity should be complete before anything can
happen.
- Make sure that the RP is pinglible by the sender and the reciever.
- Make sure that the RP address is not mis-typed (its amazing how many
times that ends up being the culprit).
- Throw ip pim sparse on the loopbacks as well.

Hope this helps.


Sr. Network Engineer
Megapath Inc.

CCIE 9651

-----Original Message-----
From: cisco-nsp-bounces at puck.nether.net
[mailto:cisco-nsp-bounces at puck.nether.net] On Behalf Of Antonio Querubin
Sent: Tuesday, July 08, 2008 2:12 PM
To: Mihai Tanasescu
Cc: cisco-nsp at puck.nether.net
Subject: Re: [c-nsp] VRF-Lite & Multicast question

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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