[j-nsp] RSVP-Signalled LSPs

[Dermot Williams]

Hello all,

 

I have a quick question about RSVP LSPs that one or more of you might be
able to answer for me. According to the JNCIS study guide "when an
established LSP experiences a failure and is torn down, the traffic that
was transiting the LSP begins to be forwarded using native IPv4 lookups
in the network."

 

It's unclear from this sentence whether or not the LSP will be rebuilt
using an alternative path or if the router will forward packets using
the IGP indefinitely (requiring a manual clear in order to get it
rebuilt). Our experience is that the LSP will be rebuilt over an
alternative path fairly quickly but to date we have only used them to
carry Layer 2 VPNs so that may impact the behaviour.

 

Could anyone clarify this for me?

 

Dermot Williams

 

Senior Network Engineer

Irish Broadband Internet Services

 

Mobile:   +353 86 3887961

DDI:         +353 1 4818481

 








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