[98660] in North American Network Operators' Group
Re: inter-domain link recovery
daemon@ATHENA.MIT.EDU (Paul Ferguson)
Wed Aug 15 03:12:06 2007
From: "Paul Ferguson" <fergdawg@netzero.net>
Date: Wed, 15 Aug 2007 06:17:37 GMT
To: nanog@merit.edu
Errors-To: owner-nanog@merit.edu
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- -- "Patrick W. Gilmore" <patrick@ianai.net> 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/
