Hi list Let's examine an MPLS network where the connections between MPLS routers (P and PE) involve L2 devices. The connections might be leased L2 pseudowires or something similar. As a consequence the interface link state information cannot be used by routers to determine the state of the connection or neighboring router. For example consider routers A and B. If the connection between them is down, both still see interface (fiber or copper) link up. Similarly in case of failure of router A, B still sees interface link up. For the sake of simplicity, let's assume all routers are Juniper (e.g. MX series), IS-IS is used as IGP and RSVP(-TE) as the MPLS signaling protocol.
We would like to achieve the fastest convergence times safely available. What is the current best practise to accomplish this and what order of magnitude are the convergence times? I have spent some time searching for a solution. I have found these: 1) enable BFD on the IGP session 2) enable BFD on the LSPs 3) enable BFD on the RSVP session Which one of them (if any) is the best solution? I also read that BFD might cause IGP to reconverge instead of switching the traffic to bypass LSP (when using link-node protection). Any help and pointers to good material is greatly appreciated. Thanks _______________________________________________ juniper-nsp mailing list [email protected] https://puck.nether.net/mailman/listinfo/juniper-nsp
