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Liaison statement
LS on update to MPLS-TP work in ITU-T SG15

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State Posted
Submitted Date 2014-12-19
From Group ITU-T-SG-15
From Contact Hiroshi Ota
To Group mpls
To Contacts Loa Andersson <>
George Swallow <>
Ross Callon <>
Cc Adrian Farrel <>
Alia Atlas <>
John Drake <>
Scott Mansfield <>
Response Contact
Purpose For information
Attachments LS on update to MPLS-TP work in ITU-T SG15
ITU-T SG15 wishes to inform the IETF MPLS WG that ITU-T SG15 has initiated at
our December 2014 closing plenary meeting the final approval process for:

- Corrigendum 1 to Recommendation ITU-T G.8112/Y.1371 (2012).  This Corrigendum
replaces a bibliographical reference to
draft-ietf-mpls-tp-ethernet-addressing-08 with a normative reference to
published IETF RFC 7213.

- Recommendation ITU-T G.8151/Y.1374.  This Recommendation incorporates
Amendment 1 (2012) and Amendment 2 (2013) into the base document
(Recommendation ITU-T G.8151/Y.1374-2012), includes extensions for managing
Recommendations ITU-T G.8121.1/Y.1381.1 and ITU-T G.8121.2/Y.1381.2
functionalities, and maintenance items.

- Recommendation ITU-T G.8101/Y.1355.  This Recommendation adds items defined
in Recommendation ITU-T G.8131/Y.1382 (2014) and IETF RFC 7087. ITU-T SG15 also
wishes to inform the IETF MPLS WG of an update to the ITU-T SG15 work programme
to include an amendment to Recommendation ITU-T G.8131/Y.1382, Linear
protection switching for MPLS transport profile. This amendment provides 3
editorial enhancements to the text in the approved Recommendation without
introducing any change in behaviour:

- Adding an illustration in clause 8.1 of the format of the APC PDU for the
convenience of the reader.  Currently, the Recommendation references RFC6378
for the base PDU and RFC7271 for a mandatory TLV to be included within that PDU
but does not illustrate the format of the PDU after those two components have
been put together.

- Updating the description of the Type field of the aforementioned TLV from
‘TBD’ to ‘1’ to reflect the IANA assignment that has been made.

- A number of clauses describe configurable parameters of the protection
mechanism.  The amendment adds text to identify the specific management
information signals that are used to configure those parameters.

The initial draft of this amendment is attached together with the consented
texts.  The amendment to Recommendation ITU-T G.8131/Y.1382 is targeted for
consent at the July 2015 meeting of SG15.


− Draft Amendment 1 to Recommendation ITU-T G.8131/Y.1382 (2014) (latest draft)

− Draft Corrigendum 1 to Recommendation ITU-T G.8112/Y.1371 (2012) (Consented,
5 December 2014) (TD349/PLEN)

− Draft revised Recommendation ITU-T G.8151/Y.1374 (Consented, 5 December 2014)
(TD302/PLEN Rev.1)

− Draft revised Recommendation ITU-T G.8101/Y.1355 (Consented, 5 December 2014)
(TD326/PLEN Rev.1)