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

Note: This RFC has been obsoleted by RFC 7761

Note: This RFC has been updated by RFC 5059, RFC 5796, RFC 6226

Errata ID: 1124
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 4.5.4 says:

          The compound Join/Prune message contains a Prune(S,G,rpt).

          The (S,G,rpt) downstream state machine on interface I
          transitions back to the Prune state.  The Expiry Timer (ET) is
          restarted, set to maximum of its current value and the
          HoldTime from the triggering Join/Prune message.

It should say:

          A compound Join/Prune message containing a Prune(S,G<rpt) is 
          received on interface I with its Upstream Neighbor Address 
          set to the router’s primary IP address on I.

          The (S,G,rpt) downstream state machine on interface I
          transitions back to the Prune state.  The Expiry Timer (ET) is
          restarted, set to maximum of its current value and the
          HoldTime from the triggering Join/Prune message.

Notes:

This section does not consider “Upstream Neighbor Address” as does “Receive Prune(S,G,rpt)” in “Transitions from Prune State” on page 60 or “Receive Prune(S,G,rpt)” in “Transitions from Prune-Pending State” on page 59. Is that information not important in this state transition?

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