[c-nsp] iBGP fall-over without selective address tracking

Phil Mayers p.mayers at imperial.ac.uk
Tue Dec 7 12:49:19 EST 2010


On 07/12/10 16:48, Phil Mayers wrote:
>
> I do need the summary route, to advertise to our upstream.
>
> In the absence of the "route-map" argument to "fall-over" to limit it to
> matching /32 (why oh why isn't that the default for iBGP!) does anyone
> have any ideas? I could presumably originate the covering route from a
> separate router dedicated for the purpose, but it seems a bit of a waste
> of hardware!

Actually, answering my own question - this does NOT seem to work. 
12.2(33)SXI happily considers BGP routes as valid to reach BGP 
neighbours, and since we have a default route...

It seems like in the absence of selective address tracking my only 
option is to tune BGP timers?


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