Re: [c-nsp] BGP Multihomed Selective/Conditional Advertisement

[Tony]

--- On Sun, 26/10/08, [EMAIL PROTECTED] <[EMAIL PROTECTED]> wrote:

> From: [EMAIL PROTECTED] <[EMAIL PROTECTED]>
> Subject: RE: [c-nsp] BGP Multihomed Selective/Conditional Advertisement
> To: [EMAIL PROTECTED], cisco-nsp@puck.nether.net
> Date: Sunday, 26 October, 2008, 3:54 AM
> I'm not sure if I can have multiple advertise-maps also,
> but can't find any documentation on it either. Does
> anyone else know?
> 

This is the best doco I could find:

http://www.ciscopress.com/articles/article.asp?p=169556&seqNum=2

Probably the most relevant section is this :

===
NOTE

A conditional advertisement does not create routes; it only withholds them 
until the condition is met. These routes must already be present in the BGP RIB.
===

Having read that, I don't think you're going to be able to do what you want 
with exist or nonexist maps, as they only control IF a prefix is advertised, 
not any of the other stuff about the prefix being advertised.


      
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