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Routing Protocols

  • Support for BGP-LS NLRI to carry confederation ID (ACX7100-32C, ACX7100-48L, ACX7509, ACX7024, PTX10008, and QFX5700)—Starting in Junos OS Evolved Release 23.2R1, Junos OS Evolved enables BGP Link State (BGP-LS) network layer reachability information (NLRI) to carry the confederation ID in TLV 512 when BGP confederation is enabled. The NLRI carries the confederation ID along with the member autonomous system number (AS number) in TLV 517 as defined in RFC 9086. In releases before Junos OS Evolved Release 23.2R1, BGP-LS NLRI carries only the member AS number in TLV 512 and the confederation ID is not encoded in the lsdist.0 routing table.

    [See Link-State Distribution Using BGP Overview.]

  • Support to activate BFD strict mode for BGP peer sessions (PTX10003, PTX10004, PTX10008, PTX10016, and QFX5700)—Starting in Junos OS Evolved Release 23.2R1, you can activate BFD strict mode for BGP peer sessions. Activating BFD strict mode disallows BGP to establish a session until the BFD session is successfully established and has stabilized. BFD strict mode helps avoid situations that result in routing churn. You can also use BFD strict mode to minimize the impact of a network interruption.

    To activate BFD strict mode for BGP peer sessions, include the strict-mode [bfd-wait-timeout <10-255 seconds> CLI statement under bfd-liveness-detection at the [edit protocols bgp group group-name neighbor address] hierarchy level.

    For example, use the following command to activate BFD strict mode for BGP peer sessions:

    set protocol bgp group group-name neighbor address bfd-liveness-detection [strict-mode [bfd-wait-timeout 10-255 seconds]]

    [See Understanding BFD for BGP, bfd-liveness-detection (BGP).]