Subject: [Pce] [Technical Errata Reported] RFC5440 (2940)

From: RFC Errata System <[email-masked]>
Date: Thu, 18 Aug 2011 02:11:33 -0700 (PDT)

The following errata report has been submitted for RFC5440,
"Path Computation Element (PCE) Communication Protocol (PCEP)".

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You may review the report below and at:
http://www.rfc-editor.org/errata_search.php?rfc=5440&eid=2940

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Type: Technical
Reported by: Ramon Casellas <[email-masked]>

Section: 5

Original Text
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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.

Corrected Text
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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). In other words, a PCC 
connecting to a remote PCE is not constrained to use the registered TCP port 
as the TCP source port, although it MAY use it.

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

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RFC5440 (draft-ietf-pce-pcep-19)
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Title               : Path Computation Element (PCE) Communication Protocol (PCEP)
Publication Date    : March 2009
Author(s)           : JP. Vasseur, Ed., JL. Le Roux, Ed.
Category            : PROPOSED STANDARD
Source              : Path Computation Element
Area                : Routing
Stream              : IETF
Verifying Party     : IESG