Name: draft-ietf-pim-bidir-07
Title: Bi-directional Protocol Independent Multicast (BIDIR-PIM)
State: Pending
Authors: Mark Handley, Isidor Kouvelas, Tony Speakman, Lorenzo Vicisano
Group: Protocol Independent Multicast (pim)
Date: 2004-07-22
This document discusses Bi-directional PIM, a variant of PIM Sparse-Mode
and receivers. Bi-directional trees are built using a fail-safe Designated
Forwarder (DF) election mechanism operating on each link of a multicast
topology. With the assistance of the DF, multicast data is natively
forwarded from sources to the Rendezvous-Point and hence along the shared
tree to receivers without requiring source-specific state. The DF election
takes place at RP discovery time and provides a default route to the RP
thus eliminating the requirement for data-driven protocol events.
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