RFC 5654, "Requirements of an MPLS Transport Profile", September 2009

Errata ID: 2073
Status: Held for Document Update
Type: Editorial
Publication Format(s) : TEXT
Reported By: Eric Gray
Date Reported: 2010-03-12
Held for Document Update by: Adrian Farrel

Section 2.5.4 says:

83  The external controls as defined in [RFC4427] MUST be supported.

       A.  External controls overruled by higher priority requests
           (e.g., administrative requests and requests due to link/node
           failures) or unable to be signaled to the remote end (e.g.,
           due to a coordination failure of the protection state) MUST
           be dropped.

It should say:

83  The external controls as defined in [RFC4427] MUST be supported.

       A.  External controls overruled by higher priority requests
           (e.g., administrative requests and requests due to link/node
           failures) or unable to be signaled to the remote end (e.g.,
           due to a coordination failure of the protection state) MUST
           be ignored.

Notes:

Dropping a control is meaningless. The original intent may have been to say "control messages", but this requirement is stated in the section "Management-Plane Operation of Protection and Restoration"

In any case, using "ignored" instead of "dropped" fixes the problem regardless of the original intention.

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