Juniper JUNOSE 11.1.X MULTICAST ROUTING, Configuration Manual

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Advantages that an SSM-configured network has over a traditionally configured PIM
sparse mode network include the following:
■
No need for shared trees or RP mapping (no RP is required).
■
No need for RP-to-RP source discovery through Multicast Source Discovery
Protocol (MSDP).
■
Simplified administrative deployment; you need only configure PIM sparse mode
on all router interfaces and issue the necessary SSM commands (including
specifying MLDv2 on the receiver local area network).
■
Support for source lists; you can use source lists, supported in MLDv2, where
only specified sources send traffic to the SSM group.
In a PIM SSM–configured network, the E Series router subscribes to an SSM channel
(by means of MLDv2), announcing a desire to join group G and source S. The directly
connected PIM sparse mode router, the designated router of the receiver, sends an
(S,G) join message to its RPF neighbor for the source. For PIM SSM, the RP is not
contacted in this process by the receiver (as happens in normal PIM sparse mode
operations).
Platform Considerations
For information about modules that support PIM for IPv6 multicasting on the ERX7xx
models, ERX14xx models, and the ERX310 Broadband Services Router:
■
See ERX Module Guide, Table 1, Module Combinations for detailed module
specifications.
■
See ERX Module Guide, Appendix A, Module Protocol Support for information about
the modules that support PIM for IPv6 multicasting.
For information about modules that support PIM for IPv6 multicasting on the E120
and E320 Broadband Services Routers:
■
See E120 and E320 Module Guide, Table 1, Modules and IOAs for detailed module
specifications.
■
See E120 and E320 Module Guide, Appendix A, IOA Protocol Support for information
about the modules that support PIM for IPv6 multicasting.
References
For more information about IPv6 multicast, see the following resources:
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RFC 2362—Protocol Independent Multicast-Sparse Mode (PIM-SM): Protocol
Specification (June 1998)
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RFC 3569—An Overview of Source-Specific Multicast (SSM) (July 2003)
■
Source-Specific Multicast for IP—draft-ietf-ssm-arch-06.txt (March 2005 expiration)
■
Source-Specific Protocol Independent Multicast in
232/8—draft-ietf-mboned-ssm232-08.txt (September 2004 expiration)
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Platform Considerations
JUNOSe 11.1.x Multicast Routing Configuration Guide