Segment Routing v6 Configuration Guide for Cisco 8000 Series Routers, Cisco IOS XR Releases

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Segment Routing v6 Configuration Guide for Cisco 8000 Series Routers, Cisco IOS XR Releases

SRv6 SID information in BGP-LS reports

Updated: September 8, 2026

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Provides bGP Link-State (LS) is used to report the topology of the domain using nodes, links, and prefixes. This feature adds the capability to report SRv6 Segment Identifier (SID) Network Layer Reachability Information (NLRI).

BGP Link-State (LS) is used to report the topology of the domain using nodes, links, and prefixes. This feature adds the capability to report SRv6 Segment Identifier (SID) Network Layer Reachability Information (NLRI).

The following NLRI is added to the BGP-LS protocol to support SRv6:

  • Node NLRI: SRv6 Capabilities, SRv6 MSD types

  • Link NLRI: End.X, LAN End.X, and SRv6 MSD types

  • Prefix NLRI: SRv6 Locator

  • SRv6 SID NLRI (for SIDs associated with the node): Endpoint Function, BGP-EPE Peer Node/Set and Opaque

This example shows how to distribute IS-IS SRv6 link-state data using BGP-LS:

Router(config)# router isis 200 
Router(config-isis)# distribute link-state instance-id 200
Note

It is still possible to ping or trace a SID:

  • ping B:k:F::

  • traceroute B:k:F::

It is possible to use a list of packed carriers to ping or trace a SID, to ping or trace route, use <destination SID> via srv6-carriers <list of packed carriers>.