explicitly configuring node protection

EdTheLadEdTheLad Posts: 2,112Member
I'm wondering what functionality this command gives?
tunnel mpls traffic-eng fast-reroute "node-protect"

FRR local protection can be either link or node, node is preferred by default. I created a topology with only a link protection bypass tunnel available and set the primary tunnel explicitly with the "node protection" keyword. I was expecting after protected interface failed, the tunnel would go down, wasn't the case, its rerouted using link protection.
Anyone know what exactly the "node-protect" knob does?
Networking, sometimes i love it, mostly i hate it.Its all about the $$$$


  • d4nz1gd4nz1g Posts: 464Member
    Im not a pro on TE, but i have ran into this doc (which is not clear enough):

    MPLS Traffic Engineering (TE)--Fast Reroute (FRR) Link and Node Protection - Cisco

    As far as i understood, it keeps track of the next hop (the other one after the tunnel termination) and manages to have a backup tunnel towards it, in case of a failure on the intermediate router.
  • daveybdaveyb Posts: 28Member ■□□□□□□□□□
    Node protect will keep a backup path that doesn't go via the same node as the primary path.

    Link protect will just make sure there is a backup path.
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