From: Sean C (Upp_and_Upp@hotmail.com)
Date: Thu Dec 09 2004 - 11:45:08 GMT-3
You sure on that?
If I'm receiving prefixes 197.68.20,21& 22.0/24, and apply a prefix to block
in only 21&22 (and still allow 20):
ip prefix-list 1 se 10 deny 197.68.21.0/23 ge 24 le 24
ip prefix-list 1 seq 20 permit 0.0.0.0/0 le 32
1st, the prefix list goes to 20
R3#sh ip pref
ip prefix-list 1: 2 entries
seq 10 deny 197.68.20.0/23 ge 24 le 24
seq 20 permit 0.0.0.0/0 le 32
And I end up blocking only 20 and 21 - not 21 and 22.
R3#sho ip bgp
Network Next Hop Metric LocPrf Weight Path
*> 197.68.22.0 23.23.23.2 0 0 1 i
----- Original Message -----
From: "Edwards, Andrew M" <andrew.m.edwards@boeing.com>
To: <Zimia123@aol.com>; <ccielab@groupstudy.com>
Sent: Wednesday, December 08, 2004 4:57 PM
Subject: RE: prefix list
> Yep...
>
> Router bgp xxx
> Neighbor w.x.y.z route-map BGP_IN in
>
> Route-map block BGP_IN
> Match ip prefix-list test
>
> ip prefix-list test seq 5 deny 197.68.20.0/23 ge 24 le 24
> ip prefix-list test seq 10 permit 0.0.0.0/0 le 32
>
>
> Andy
>
> -----Original Message-----
> From: Zimia123@aol.com [mailto:Zimia123@aol.com]
> Sent: Wednesday, December 08, 2004 12:33 PM
> To: ccielab@groupstudy.com
> Subject: prefix list
>
>
> say i would like to stop 197.68.21.0/24 and 197.68.22.0/24 from entering
> my
> AS in bgp using prefix-list but allow all the other networks. any
> examples ? thanks
>
> _______________________________________________________________________
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