Technical Summary
This document specifies the applicability of SRv6 (Segment Routing
IPv6) to the user-plane of mobile networks. The network programming
nature of SRv6 accomplishes mobile user-plane functions in a simple
manner. The statelessness of SRv6 and its ability to control both
service layer path and underlying transport can be beneficial to the
mobile user-plane, providing flexibility, end-to-end network slicing,
and SLA control for various applications.
Working Group Summary
The main issue during working group development was the document's
intended track. There was consensus to aim for PS, save for one
objection. Upon consultation with the 3GPP liaison from CT/CT4 it
was decided that the document indeed had to be Informational
(this was the reason for its 2nd IETF LC).
Document Quality
Are there existing implementations of the protocol? Have a
significant number of vendors indicated their plan to
implement the specification?
Yes, there are product implementations already.
Are there any reviewers that
merit special mention as having done a thorough review,
e.g., one that resulted in important changes or a
conclusion that the document had no substantive issues?
Joel Halpern's concern about the intended track was borne out,
and his concern prompted important communications with 3GPP
that resulted in useful, decisive feedback.
Lionel Morand's time and energy as liaison were essential to
getting 3GPP's input on the document. Suresh Krishnan helped
coordinate relevant communications, many times.
These folks, and all reviewers, are greatly appreciated.
Personnel
Document Shepherd: Sri Gundavelli
Responsible Area Director: Erik Kline
IESG Note
This document had two IETF Last Calls: one as PS (per the
authors' desire) and a 2nd as Informational (per feedback
from 3GPP liaison communications).
IANA Note
The values defined by this document come from the FCFS portion
of the "SRv6 Endpoint Behaviors" registry. There are placeholders
entries already pointing to this draft.