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: 1166
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 4.5.7 says:

          The upstream (S,G) state machine remains in Joined state.  If
          the Join Timer is set to expire in more than t_override
          seconds, reset it so that it expires after t_override seconds.

It should say:

          The upstream (S,G) state machine remains in Joined state.  If
          the Join Timer is set to expire in more than t_override
          seconds, reset it so that it expires after t_override seconds.  If the 
          Join Timer is set to expire in less than t_override seconds, leave it   
          unchanged.

Notes:

It would make the Join Timer clearer to understand if an explicit statement was made indicating that if the Join Timer is less than t_override, it should be left unchanged. This needs to be made for “See Prune(S,G) to RPF’(S,G)”, “See Prune(S,G,rpt) to RPF’(S,G)”, and “See Prune(*,G) to RPF’(S,G)”.

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