From: ZZ (zurabz@gmail.com)
Date: Sat Sep 27 2008 - 19:41:20 ART
You are not allowing everything else. At the end there is explicit deny any.
try this
ip prefix-list ABC seq 5 deny 200.20.4.0/22
<http://200.20.4.0/22R4#sh> <http://200.20.4.0/22R4#sh>ip prefix-list ABC
seq 10 permit 0.0.0.0/0 le 32
<http://200.20.4.0/22R4#sh> <http://200.20.4.0/22R4#sh>
On Sat, Sep 27, 2008 at 6:36 PM, Mohamed Tandou <dtandou@gmail.com> wrote:
> GS,
> i want to use prefix-list to filter the following network 200.20.5.0 and
> 200.20.6.0 from my neighbor
> this is how it looks before i applied filtering
>
> R4#sh ip bgp
> BGP table version is 80, local router ID is 11.11.4.4
> Status codes: s suppressed, d damped, h history, * valid, > best, i -
> internal,
> r RIB-failure, S Stale
> Origin codes: i - IGP, e - EGP, ? - incomplete
> Network Next Hop Metric LocPrf Weight Path
> *> 150.3.11.0/24 0.0.0.0 0 32768 i
> *> 192.168.100.254/32
> 11.11.5.5 0 100 0 (4002) 21 111
> i
> *> 198.18.1.0 150.3.11.254 0 0 254 i
> *> 200.20.1.0 150.3.11.254 0 0 254 i
> *> 200.20.2.0 150.3.11.254 0 0 254 i
> *> 200.20.3.0 150.3.11.254 0 0 254 i
> *> 200.20.4.0 150.3.11.254 0 0 254 i
> *> 200.20.5.0 150.3.11.254 0 0 254 i
> *> 200.20.6.0 150.3.11.254 0 0 254 i
> *> 200.20.7.0 150.3.11.254 0 0 254 i
> *> 200.20.8.0 150.3.11.254 0 0 254 i
> *> 200.20.9.0 150.3.11.254 0 0 254 i
> *> 200.20.10.0 150.3.11.254 0 0 254 i
>
> When i configured filtering everything is being denied.
>
> router bgp 4001
> no synchronization
> bgp router-id 11.11.4.4
> bgp log-neighbor-changes
> neighbor 150.3.11.254 remote-as 254
> neighbor 150.3.11.254 prefix-list ABC in
> no auto-summary
>
> ip prefix-list ABC seq 5 deny 200.20.4.0/22
> R4#sh <http://200.20.4.0/22R4#sh> ip bgp
> BGP table version is 91, local router ID is 11.11.4.4
> Status codes: s suppressed, d damped, h history, * valid, > best, i -
> internal,
> r RIB-failure, S Stale
> Origin codes: i - IGP, e - EGP, ? - incomplete
> Network Next Hop Metric LocPrf Weight Path
> *> 150.3.11.0/24 0.0.0.0 0 32768 i
> *> 192.168.100.254/32
> 11.11.5.5 0 100 0 (4002) 21 111
> i
>
> Thanks
>
> Moh
>
>
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This archive was generated by hypermail 2.1.4 : Sat Oct 04 2008 - 09:26:20 ART