Hi all, we have run into a problem with BFD between Cisco and Juniper box when MPLS-FRR is configured.
ISIS is used as IGP protocol and one hop MPLS-TE tunnels are configured with link protection. BFD is configured on both sides (under IS-IS protocol). After primary logical link is dropped between Cisco-Juniper (simulating DWDM system), BFD session and isis adj are torn down on both sides. The problem is that Juniper does not signal to MPLS-TE FRR that physical interface is logicaly down and FRR should be used. Instead it keeps primary tunnel up showing faulty interface as outgoing. The result is that traffic is blackholed. On the other side Cisco re-routes traffic corectly. Am I missing some configuration or this is a known issue? Config on both sides (FRR without BFD works fine): ge-1/3/0 description Link_to_Cisco; mtu 9110; hold-time up 0 down 0; unit 0 family inet address 10.100.111.50/30; family iso; family inet6 address 2A00:EE00:0:12:10:100:111:50/64; family mpls; protocols rsvp interface ge-1/3/0.0 authentication-key "$9$9cAaCORSrvxNd9AIclKx7jHqmfzAtO1IcApclMXbwHqm"; ## SECRET-DATA bandwidth 850m; link-protection path 10.100.111.66 strict; 10.100.111.53 strict; mpls traffic-engineering mpls-forwarding; explicit-null; ipv6-tunneling; standby; label-switched-path Protect-ge020 to 10.100.100.5; ldp-tunneling; link-protection; primary path1; path path1 10.100.111.49 strict; interface ge-1/3/0.0; isis lsp-lifetime 65000; spf-options delay 50; holddown 2000; topologies ipv6-unicast; overload timeout 600; traffic-engineering family inet shortcuts; family inet6 shortcuts; level 1 disable; level 2 authentication-key "$9$L04XVYoJD.P5bsfz3/0OxNd"; ## SECRET-DATA authentication-type md5; wide-metrics-only; interface ge-1/3/0.0 point-to-point; bfd-liveness-detection version automatic; minimum-interval 300; minimum-receive-interval 300; multiplier 3; On Cisco side I have under interface: bfd interval 300 min_rx 300 multiplier 3 and under router isis: bfd all-interfaces Regards, Robert _______________________________________________ juniper-nsp mailing list juniper-nsp@puck.nether.net https://puck.nether.net/mailman/listinfo/juniper-nsp