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Operation, Administration, and Maintenance (OAM)

  • Enhancements to Bidirectional Forwarding Detection (BFD)-triggered fast reroute (FRR) for unicast next hops and session-id-change-limiter-indirect (MX Series, PTX1000, PTX3000, PTX5000, PTX10001, PTX10002, PTX10016, QFX10002-60C, QFX10002, QFX10008, QFX10016, and vMX)—In Junos OS Release 21.4R1, we've enhanced the BFD-triggered fast reroute (FRR) for unicast next hops and session-id-change-limiter-indirect to address the issue of traffic being silently discarded because of a session mismatch between the control plane and data plane.

    To limit the re-programming of the number of parent nodes of the indirect-nexthop and avoid additional the complexity in the Packet Forwarding Engine when the session-identifier id of the indirect nexthop is changed, use the session-id-change-limiter-indirect configuration statement at the [edit routing-options] hierarchy level.

    [See Bidirectional Forwarding Detection (BFD) for MPLS.]