From: ZZ (zurabz@gmail.com)
Date: Sat Sep 27 2008 - 19:58:37 ART
Try this one first
ip prefix-list ABC seq 7 deny 200.20.4.0/24 <http://200.20.4.0/22R4#sh>
ip prefix-list ABC seq 8 deny 200.20.5.0/24 <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 6:53 PM, Mohamed Tandou <dtandou@gmail.com> wrote:
> When i do that everything is coming thru. See
>
> R4#sh ip bgp
> BGP table version is 124, 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
>
> On Sat, Sep 27, 2008 at 6:41 PM, ZZ <zurabz@gmail.com> wrote:
>
>> 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 200.20.5.0and
>>> 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 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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