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Re: inter-domain link recovery

  • From: Paul Ferguson
  • Date: Wed Aug 15 03:50:49 2007 
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- -- "Patrick W. Gilmore" <[email protected]> wrote:

>Why do you think BGP was supposed to find the remaining path?

And to be less verbose -- let's remember that IP-layer
notification (specifically BGP) as a certain "ships-in-the-night"
characteristic with link-layer availability. Protocol time-outs
and all that stuff (BGP is not a LSP, per se).

What we have here... blah... is a situation which is designed
to work around the fact that failures in a certain substrate of
the protocol stack are not (and cannot be) communicated directly
to another adjoining layer.

Welcome to the Internet.

- - ferg

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--
"Fergie", a.k.a. Paul Ferguson
 Engineering Architecture for the Internet
 fergdawg(at)netzero.net
 ferg's tech blog: http://fergdawg.blogspot.com/