explicitly configuring node protection
EdTheLad
Member Posts: 2,111 ■■■■□□□□□□
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?
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 $$$$
Comments
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d4nz1g
Member Posts: 464
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. -
daveyb
Member Posts: 28 ■□□□□□□□□□
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.