+ Reply to Thread
Results 1 to 3 of 3
  1. Resident Underachiever EdTheLad's Avatar
    Join Date
    May 2005
    Location
    Globe trotter, nfa
    Posts
    2,118

    Certifications
    CCNP/CCIP/IE Written
    #1

    Default explicitly configuring node protection

    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 $$$$
    Reply With Quote Quote  

  2. SS -->
  3. Padawan d4nz1g's Avatar
    Join Date
    May 2013
    Location
    Brazil
    Posts
    424

    Certifications
    CCNP, BCNE, CCNA, CCNA Sec, MCSA2k8, IPv6 Silver
    #2
    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.
    2017 - CCIE RS
    Labbing, labbing, labbing.
    Reply With Quote Quote  

  4. Junior Member
    Join Date
    May 2016
    Posts
    28
    #3
    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.
    Reply With Quote Quote  

+ Reply to Thread

Social Networking & Bookmarks