[Idr] RFC 9857 on Advertisement of Segment Routing Policies Using BGP

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        RFC 9857

        Title:      Advertisement of Segment Routing Policies 
                    Using BGP - Link State 
        Author:     S. Previdi,
                    K. Talaulikar, Ed.,
                    J. Dong,
                    H. Gredler,
                    J. Tantsura
        Status:     Standards Track
        Stream:     IETF
        Date:       October 2025
        Mailbox:    stefano@previdi.net,
                    ketant.ietf@gmail.com,
                    jie.dong@huawei.com,
                    hannes@rtbrick.com,
                    jefftant.ietf@gmail.com
        Pages:      52
        Updates/Obsoletes/SeeAlso:   None

        I-D Tag:    draft-ietf-idr-bgp-ls-sr-policy-17.txt

        URL:        https://www.rfc-editor.org/info/rfc9857

        DOI:        10.17487/RFC9857

This document describes a mechanism used to collect Segment Routing
(SR) Policy information that is locally available in a node and
advertise it into BGP - Link State (BGP-LS) updates. Such information
can be used by external components for path computation,
reoptimization, service placement, network visualization, etc.

This document is a product of the Inter-Domain Routing Working Group of the IETF.

This is now a Proposed Standard.

STANDARDS TRACK: This document specifies an Internet Standards Track
protocol for the Internet community, and requests discussion and suggestions
for improvements.  Please refer to the current edition of the Official
Internet Protocol Standards (https://www.rfc-editor.org/standards) for the 
standardization state and status of this protocol.  Distribution of this 
memo is unlimited.

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[Idr] RFC 9857 on Advertisement of Segment Routing Policies Using BGP - Link State