Best practice for BGP session/ full routes for customer
Mark Tinka
mark.tinka at seacom.mu
Fri Jul 18 00:39:12 UTC 2014
On Monday, July 14, 2014 07:32:43 PM Jeff Tantsura wrote:
> Mark,
>
> BGP to RIB filtering (in any vendor implementation) is
> targeting RR which is not in the forwarding path, so
> there¹s no forwarding towards any destination filtered
> out from RIB.
> Using it selectively on a forwarding node is error prone
> and in case of incorrect configuration would result in
> blackholing.
As with every feature on a router, you need to know what
you're doing to make it work.
Don't blame the cows if you turn on knobs you have no
business using, or don't care to learn the risks of.
We use this feature in our network successfully, because we
know what we're doing, and care to understand the risks.
If I use it in a manner other than previously directed
(while I know it's a use-case, I've never heard of any
vendor saying it ONLY targeted out-of-path route reflectors,
but then again, I don't generally walk vendor corridors for
the scoop), well, welcome to the Internet; where core
routers can either be behemoths that move air the size of a
football field and could be mistaken for seismic detection
machines, or last generation's x86 home desktop running
Quagga and grandma's health app :-).
Mark.
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