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RFC 4601, "Protocol Independent Multicast - Sparse Mode (PIM-SM): Protocol Specification (Revised)", August 2006

Note: This RFC has been obsoleted by RFC 7761

Source of RFC: pim (rtg)

Errata ID: 1161
Status: Held for Document Update
Type: Technical
Publication Format(s) : TEXT

Reported By: Maren Peasley
Date Reported: 2007-12-21
Held for Document Update by: David Ward
Date Held: 2009-03-22

Section 4.5.6 says:

     bool JoinDesired(*,G) {
        if (immediate_olist(*,G) != NULL OR
            (JoinDesired(*,*,RP(G)) AND
             AssertWinner(*, G, RPF_interface(RP(G))) != NULL))
            return TRUE
        else
            return FALSE
     }

   JoinDesired(*,G) is true when the router has forwarding state that
   would cause it to forward traffic for G using shared tree state.
   Note that although JoinDesired is true, the router's sending of a
   Join(*,G) message may be suppressed by another router sending a
   Join(*,G) onto the upstream interface.

Notes:

When would immediate_olist(*,G) be NULL and forwarding state exist?

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