draft-ietf-pim-source-discovery-bsr-05

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Presentation transcript:

draft-ietf-pim-source-discovery-bsr-05 IJsbrand Wijnands, ice@cisco.com Stig Venaas, stig@cisco.com Michael Brig, michael.brig@mda.mil Anders Jonasson, anders@jomac.se

PFP—SA PIM Flooding Protocol – Source Announcements Generic protocol for distributing information throughout a PIM domain RPF based flooding, similar to how BSR is done Source Announcements based on the above DRs announce sources in PFP instead of sending PIM registers No RPs or shared trees No single point of failure, good redundancy Simplification You may think of it as SSM plus network source discovery Potential replacement for Dense Mode in AD-HOC networks Can co-exist with other PIM modes, different mode for different group ranges

Use cases AD-HOC multicast networks IPTV Works well in dynamic environments No wasted bandwidth Common to use Dense Mode in such networks, but data packets are flooded Dense Mode has many issues and not that many current implementations Swedish Army has tested a prototype and wants to deploy this Several other AD-HOC networks considering the solution IPTV Good for high rate streaming, only SPTs, no registers Only a few hundred sources

Simplified message format 0 1 2 3 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |PIM Ver| Type |N| Reserved | Checksum | | Originator Address (Encoded-Unicast format) | | PFP Type | Reserved |U| | Type 1 | Length 1 | | Value 1 | . | Type n | Length n | | Value n | No PFP type No forwarding unknown bit Most significant bit of the type indicating if should be forwarded when unsupported.

Status A prototype has been successfully tested in the field At least a handful of networks are interested in deploying it Draft has been revised based on some review comments. A few comments not addressed yet. More reviews wanted. Volunteers?