[23674] in North American Network Operators' Group
Re: Cisco Route filtering [was Re: OPS: BGP spew from ASN 7374]
daemon@ATHENA.MIT.EDU (Mike Hughes)
Tue Apr 13 07:57:11 1999
From: "Mike Hughes" <mike@dircon.net>
To: alex@tempest.nac.net, nanog@merit.edu
Date: Tue, 13 Apr 1999 12:57:44 +0000
In-reply-to: <Pine.BSF.4.05.9904080410320.6962-100000@iago.nac.net>
Errors-To: owner-nanog-outgoing@merit.edu
On 8 Apr 99, at 4:14, alex@tempest.nac.net wrote:
> Would the same be true with a prefix-length filter, which I assume the
> syntax would be:
>
> ip prefix-list 1 permit 209.123.0.0/16
> neigh 2.3.4.5 prefix-list 1 in
With the prefix list it would have to be an exact match using the
above. To accept more specifics within that block, you would do
something like...
ip prefix-list 1 permit 209.123.0.0/16 ge 16
neigh 2.3.4.5 prefix-list 1 in
Mike
--
Mike Hughes - Network Services mike@dircon.net
Tel: +44 181 297 0300 http://www.dircon.net/
Fax: +44 181 463 9820
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