Internet-Draft draft-ietf-spring-sr-policy-eligibility-00.txt is now
available. It is a work item of the Source Packet Routing in Networking
(SPRING) WG of the IETF.
Title: Eligibility Concept in Segment Routing Policies
Authors: Amal Karboubi
Himanshu Shah
Andrew Stone
Christian Schmutzer
Praveen Maheshwari
Name: draft-ietf-spring-sr-policy-eligibility-00.txt
Pages: 11
Dates: 2026-01-09
Abstract:
Segment Routing (SR) introduces new challenges for pinning candidate
paths on their intended paths (the path the PCE computed based on
provided intent and may have made bandwidth reservations on). The
actual path through a network can change or no longer meet the
required constraints if a SID list of an SR Policy candidate path is
not fully expressed as a list of adjacency SIDs or when a change in
the topology does happen. The introduction of the new candidate path
eligibility concept permits a path to be signaled and established as
operationally up, but controls whether the path is eligible to carry
traffic, thus influencing its active state.
The eligibility concept allows a system (operator, pce, headend,
etc.) to set eligibility as false when path deviations may have
occurred, or path constraints are no longer met for one or more SID
lists of a candidate path and clear it when candidate path deviations
are removed or constraints are met again.
The IETF datatracker status page for this Internet-Draft is:
https://datatracker.ietf.org/doc/draft-ietf-spring-sr-policy-eligibility/
There is also an HTML version available at:
https://www.ietf.org/archive/id/draft-ietf-spring-sr-policy-eligibility-00.html
Internet-Drafts are also available by rsync at:
rsync.ietf.org::internet-drafts
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