[c-nsp] as-path access lists

[Alex Foster]

Joshua,

Im trying to do some load-sharing across two feeds - so need at the very
least some customer routes to populate the BGP route tables on both of
my 3550s, Level3s customer routes exceed 15000 so I need to try and
filter this down.

Thanks, Alex


-----Original Message-----
From: joshua sahala [mailto:jejs at sahala.org] 
Sent: 15 November 2004 19:37
To: Alex Foster; cisco-nsp at puck.nether.net
Subject: Re: [c-nsp] as-path access lists

On (15/11/04 19:29), Alex Foster wrote:
> To: cisco-nsp at puck.nether.net
> From: Alex Foster <afoster at gammatelecom.com>
> Date: Mon, 15 Nov 2004 19:29:52 -0000
> Subject: [c-nsp] as-path access lists
> 
> Do as-path access lists filter routes as they are received or after
they
> are in memory - I have a 3550 that cant handle the full list of
customer
> routes my provider is sending (+15000) - so Im wondering if I can use
> as-path access lists to restrict the amount of routes I receive (but
> still maintain a usable route table).
> 

alex,

before - i'm using an as path filter to limit the routes on a couple of
routers.  you could also limit the length of prefixes recieved.

do you need the full routing table, or would it work to just have your
provider send a default?

/joshua
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