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RFC 2236, "Internet Group Management Protocol, Version 2", November 1997

Source of RFC: idmr (rtg)

Errata ID: 3063
Status: Rejected
Type: Editorial

Reported By: Jon Hak Song
Date Reported: 2011-12-26
Rejected by: Adrian Farrel
Date Rejected: 2012-05-08

Section 6 says:

   - "set timer", setting the timer to its maximum value [Version 1
     Router Present Timeout] and (re)starting it.

                              ________________
                             |                |
                             |                |
                             |   No IGMPv1    |
                             |     Router     |
                             |    Present     |
                             |                |
                        ---->|                |----
                       |     |                |    |
                       |     |________________|    |
         timer expires |                           | IGMPv1 query
                       |      ________________     | received
                       |     |                |    | (set timer)
                       |     |                |    |
                       |     |                |    |
                        -----|     IGMPv1     |<---
                             |     Router     |
                             |    Present     |
                             |                |
                        ---->|                |----
                       |     |________________|    |
                       |                           |
                       | IGMPv1 query received     |
                       | (set timer)               |
                        ---------------------------

It should say:

   - "set timer", setting the timer to its maximum value [Version 1
     Router Present Timeout] and starting it.
   - "reset timer", resetting the timer to its maximum value [Version 1
     Router Present Timeout] and restarting it.

                              ________________
                             |                |
                             |                |
                             |   No IGMPv1    |
                             |     Router     |
                             |    Present     |
                             |                |
                        ---->|                |----
                       |     |                |    |
                       |     |________________|    |
         timer expires |                           | IGMPv1 query
                       |      ________________     | received
                       |     |                |    | (set timer)
                       |     |                |    |
                       |     |                |    |
                        -----|     IGMPv1     |<---
                             |     Router     |
                             |    Present     |
                             |                |
                        ---->|                |----
                       |     |________________|    |
                       |                           |
                       | IGMPv1 query received     |
                       | (reset timer)             |
                        ---------------------------

Notes:

Resetting timer is obviously different than setting timer.
--VERIFIER NOTES--
I am rejecting this Erratum mainly because RFC 2236 has been obsoleted by RFC 3376, but also because I don't agree that the change is needed. The original text covers the two operations adequately.

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