RFC 5440, "Path Computation Element (PCE) Communication Protocol (PCEP)", March 2009

Note: This RFC has been updated by RFC 7896, RFC 8253, RFC 8356, RFC 9488

Errata ID: 2940
Status: Verified
Type: Technical
Publication Format(s) : TEXT
Reported By: Ramon Casellas
Date Reported: 2011-08-18
Verifier Name: Adrian Farrel
Date Verified: 2011-08-19

Section 5 says:

PCEP operates over TCP using a registered TCP port (4189).  This allows 
the requirements of reliable messaging and flow control to be met without 
further protocol work.  All PCEP messages MUST be sent using the registered 
TCP port for the source and destination TCP port.

It should say:

PCEP operates over TCP using a registered TCP port (4189).  This allows 
the requirements of reliable messaging and flow control to be met without 
further protocol work.  A PCE MUST listen for incoming connections at the 
registered port and a PCC SHOULD use the registered port as source port 
but MAY use any source port (e.g. ephemeral port).

Notes:

As discussed / agreed during IETF80, IETF81 and following chairs / AD suggestion

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