The MPLS WG Archive

["Doug Degan" <doug_degan@hotmail.com>]

in section 4.3  it is said that the PLR should try to find the bypass tunnel. NHOP/NNHOP one.

 

 my question is what are the assumptions that are made when saying that the PLR is capable to do so?

 

1.a) The PLR should choose from the Bypass tunnels available, meaning tunnels which this router is their Ingress. should it know their explicit route, or their recorded route is enough?

 

1.b) It should parse the current (protected) LSP's recorded route. does it gives enough information?

the PLR needs to know which node/link to avoid and what bypass destinations are good.

as far as I know - the recorded route doesn't have to include router's ID/addresses.

 

2.a) what happens if TE is not enabled in the PLR or in another node along the protected lsp's path - does it mean that FRR wil not work?

 

2.b) what if TE is enabled anywhere but CSPF is not used (and no explicit path is found in the candidate for bypass tunnels)

 

 

thanks alot again.

douglas