Liaison statement
LS on agreement of draft new Supplement ITU-T Q.Suppl.79 (ex Q.sup.sdwan-srv6) "Implementation of Software-defined wide area networking (SD-WAN) service based on Segment Routing IPv6 (SRv6)"

Additional information about IETF liaison relationships is available on the IETF webpage and the Internet Architecture Board liaison webpage.
State Posted
Submitted Date 2026-01-19
From Group ITU-T-SG-11
From Contact tsbsg11@itu.int
To Groups 6man, spring
To Contacts Bob Hinden <bob.hinden@gmail.com>
Jen Linkova <furry13@gmail.com>
Bruno Decraene <bruno.decraene@orange.com>
Alvaro Retana <aretana.ietf@gmail.com>
Joel Halpern <jmh@joelhalpern.com>
Cc Jim Guichard <james.n.guichard@futurewei.com>
Source Packet Routing in Networking Discussion List <spring@ietf.org>
Éric Vyncke <evyncke@cisco.com>
Ketan Talaulikar <ketant.ietf@gmail.com>
Joel Halpern <jmh@joelhalpern.com>
Erik Kline <ek.ietf@gmail.com>
Gunter Van de Velde <gunter.van_de_velde@nokia.com>
Scott Mansfield <Scott.Mansfield@Ericsson.com>
IPv6 Maintenance Discussion List <ipv6@ietf.org>
Bruno Decraene <bruno.decraene@orange.com>
Bob Hinden <bob.hinden@gmail.com>
Alvaro Retana <aretana.ietf@gmail.com>
Jen Linkova <furry13@gmail.com>
Response Contact tejpal.singh70@gov.in
chengying10@chinaunicom.cn
huangcanc@chinatelecom.cn
Technical Contact tejpal.singh70@gov.in
Purpose For information
Attachments Agreement – draft new Supplement ITU-T Q.Suppl.79
Body 
ITU-T Study Group 11 would like to inform Broadband Forum, IETF spring WG and
IETF 6man WG about the progress of Supplement ITU-T Q.Suppl.79 (ex
Q.sup.sdwan-srv6) "Implementation of Software-defined wide area networking
(SD-WAN) service based on Segment Routing IPv6 (SRv6)", which was agreed at the
ITU-T SG11 meeting, Geneva, 17-26 November 2025.

This Supplement provides an implementation of SD-WAN service based on SRv6 and
gives concrete message parameters needed to carry out a SD-WAN service.

ITU-T Study Group 11 looks forward to keeping continued collaboration and
exchanging information with Broadband Forum, IETF spring WG and IETF 6man WG on
this topic.