RE: [nsp] BGP TRICK

From: KF (kf@reign.sk)
Date: Fri Jan 11 2002 - 06:19:08 EST


thanx anyway , but this is not that case..

Greetz

Alex

-----Original Message-----
From: Michael C. Toren [mailto:mct@netaxs.com]
Sent: Thursday, January 10, 2002 9:42 PM
To: KF
Cc: cisco-nsp@puck.nether.net
Subject: Re: [nsp] BGP TRICK

> How to annouce over E-BGP local loopback address (network), that it will
> stay within the remote AS.
>
> WITHOUT using COMMUNITIES
> WITHOUT using incoming or any other filtering at the remote AS.. better
> say without any touch at the remote AS site..
>
> who knows this trick?

If you happen to know *every* other peer that the remote-AS is speaking
with, you could use prepending to insert those ASN's into the as-path. BGP
loop detection should then prevent those prefixes from being propagated...

-mct



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