Re: Route table growth and hardware limits...talk to the filter

* Sam Stickland · * Tue Sep 11 10:59:36 2007

Forrest wrote:

Maybe this is a dumb question, but why isn't there a BGP option to just

filter more specific routes that have the same AS path as the larger

aggregate? This would allow the networks that announce more specifics for

traffic engineering to still accomplish that, while throwing away the

garbage from someone else that decides to announce their /19 as 33 routes

for no apparent reason. Sure, this would fail if a network decided to
only announce /24's for example without a larger aggregate, but how many
networks are really doing that?
Forrest

There's a couple of feature requests open at Cisco that would do this.
Rodney Dunn (at Cisco) pushed quite hard for these but couldn't get any
traction. As he's previously pointed out it would have if people would
vote for them (attach a case to).
FORWARDED MESSAGE:
Rodney Dunn wrote:
Take your pick. :) 
CSCsa45474 Ability to block overlapping BGP prefixes from being installed in RIB
or better:
CSCsa46049 IOS RIB should not install overlapping routes with same next hop
Rodney

On Tue, Oct 03, 2006 at 05:26:51PM +0200, Gert Doering wrote:
> Hi,

>
> On Tue, Oct 03, 2006 at 11:09:16AM -0400, Rodney Dunn wrote:

> > I could never get them to agree to do it before and I have no reason

> > to believe anything has changed.

>
> Is there a CSC number that one could attach cases to?

>
> gert

> --
> USENET is *not* the non-clickable part of WWW!

> //www.muc.de/~gert/

> Gert Doering - Munich, Germany [email protected]

> fax: +49-89-35655025 [email protected]

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