[c-nsp] Reasons for "random" ISIS flapping?

[Gert Doering]

Hi,

On Fri, Aug 30, 2013 at 04:41:45AM +0200, Mark Tinka wrote:
> The reason I'm thinking about this is because I recently 
> lab'ed up some Juniper kit, and didn't notice any real 
> difference in failure detection and local re-routing with 
> BFD on or off, when the box had LFA running.

That depends on what the failure is...

If the failure is "unplug fiber 10G link" (or "switch off remote router,
which leads to loss of link"), detection of carrier loss is faster than 
BFD in any case, so BFD won't make a difference.

If the failure is "this is a link that goes through some L2 switching
gear, so if the remote router crashes, the local router will still see
link on the port", BFD will be the protocol to detect the outage.

gert
-- 
USENET is *not* the non-clickable part of WWW!
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Gert Doering - Munich, Germany                             gert at greenie.muc.de
fax: +49-89-35655025                        gert at net.informatik.tu-muenchen.de
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