Liaison statement
LS on recent service function chaining related developments in Q4/SG11: two new draft Supplements

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State Posted
Submitted Date 2021-04-19
From Group ITU-T-SG-11
From Contact Denis ANDREEV
To Group sfc
To Contacts Jim Guichard <jguichar@cisco.com>
Joel Halpern <jmh@joelhalpern.com>
Cc itu-t-liaison@iab.org <itu-t-liaison@iab.org>
Service Function Chaining Discussion List <sfc@ietf.org>
Martin Vigoureux <martin.vigoureux@nokia.com>
Scott Mansfield <Scott.Mansfield@Ericsson.com>
John Scudder <jgs@juniper.net>
Alvaro Retana <aretana.ietf@gmail.com>
Jim Guichard <james.n.guichard@futurewei.com>
Joel Halpern <jmh@joelhalpern.com>
Response Contact Tatiana Kurakova <tatiana.kurakova@itu.int>
Purpose For information
Attachments SG11-LS179_Att3
SG11-LS179_Att2
SG11-LS179_Att1
SG11-LS179
Body 
At its virtual meeting (17-26 March 2021), ITU-T Study Group 11, particularly
Q4/11 agreed to start two new work items:

- Draft Supplement ITU-T Q.Suppl.heter_SI "Signaling Requirements of SFC based
on heterogeneous service index in mobile scenarios" aims to specify the
signalling requirements of service function chaining based on heterogeneous SI.
This Supplement focuses on the signalling among the service function
forwarders. The A.13 justification is included as Annex C in the Q4/11 meeting
report (SG11-TD1560-R1/GEN) and the baseline text is contained in
SG11-TD1633/GEN.

- Draft Supplement ITU-T Q.Suppl.pSFC "Signalling requirements for parallel SFC
packet processing" aims to specify the signalling requirements of parallel SFC
packet processing. The A.13 justification is included as Annex C in the Q4/11
meeting report (SG11-TD1560-R1/GEN) and the baseline text is contained in
SG11-TD1632/GEN.

We will keep ITU-T Study Group 13, IETF SFC WG, JCA-IMT2020 informed on the
progress of these two draft Supplements and hope you can share your related
works with us if you have similar studies in this area.

Please kindly find below, in Appendix, the information of this work item using
SDN Roadmap template.