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Lectures notes for 2010 - KTH

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Multicast Source Discovery Protocol<br />

(MSDP)[13]<br />

As the routing protocols deployed in the multicast networks operating in sparse<br />

mode do not support flooding in<strong>for</strong>mation, a mechanism was needed to propagate<br />

in<strong>for</strong>mation about sources (i.e., hosts sourcing data to a multicast group) and the<br />

associated multicast groups to all the multicast networks.<br />

Sends Source Active (SA) messages containing (S,G,RP):<br />

• Source Address,<br />

• Group Address,<br />

• and RP Address<br />

these are propagated by Rendezvous Points over TCP<br />

MSDP connects multiple PIM-SM domains together. Each domain uses its own<br />

independent Rendezvous Point (RP) and does not depend on RPs in other<br />

domains.<br />

Maguire Multicast Source Discovery Protocol (MSDP)[13] 8: 55 of 78<br />

maguire@kth.se <strong>2010</strong>.03.21 Internetworking/Internetteknik

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