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BGP SR Policy Extensions for metric

Document Type Replaced Internet-Draft (idr WG)
Expired & archived
Authors KaZhang , Jie Dong , Ketan Talaulikar
Last updated 2023-10-08
Replaced by draft-ietf-idr-sr-policy-metric
RFC stream Internet Engineering Task Force (IETF)
Intended RFC status (None)
Additional resources Mailing list discussion
Stream WG state Candidate for WG Adoption
Document shepherd (None)
IESG IESG state Replaced by draft-ietf-idr-sr-policy-metric
Consensus boilerplate Unknown
Telechat date (None)
Responsible AD (None)
Send notices to (None)

This Internet-Draft is no longer active. A copy of the expired Internet-Draft is available in these formats:


SR Policy candidate paths can be represented in BGP UPDATE messages. BGP can then be used to propagate the SR Policy candidate paths to the headend nodes in the network. After SR Policy is installed on the ingress node, the packets can be steered into SR Policy through route selection. Therefore, route selection may be performed on the ingress node of the SR Policy. If there are multiple routes to the same destination, the route selection node can select routes based on the local policy. The local policy may use the IGP metric of the selected path, which is the IGP Metric of the SR Policy. Thus the BGP UPDATE message needs to carry the metric of each segment list of the SR Policy Candidate Path, which can be used in path selection of routing.


Jie Dong
Ketan Talaulikar

(Note: The e-mail addresses provided for the authors of this Internet-Draft may no longer be valid.)