RE: msdp sa message

The only action taken is that the (S,G) entry is installed in the SA cache. MSDP is just used to tell the RPs where the sources are, it doesn't have anything to do with building the tree. PIM is still used for the formation of the tree, which occurs once the RP receives a (*,G) PIM join for a group that is in the SA cache. The (S,G) entry will then be installed in the multicast routing table, and the (S,G) tree joined back to the source.

HTH,

Brian McGahan, CCIE #8593 (R&S/SP/Security)
bmcgahan_at_INE.com
 

-----Original Message-----
From: nobody_at_groupstudy.com [mailto:nobody_at_groupstudy.com] On Behalf Of abderrahim sadki
Sent: Tuesday, January 25, 2011 2:24 PM
To: ccielab_at_groupstudy.com
Cc: sadkia_at_gmail.com
Subject: msdp sa message

Hi all,

After going through the multicast configuration guide I am a bit confused:

When the MSDP peer receives the SA message from the other domain, does he send
a (S,G) join message back to the RP? or does it decapsulate it and forwards it
to the receivers.

Thanks,
Abderrahim

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Received on Tue Jan 25 2011 - 16:23:10 ART