From: ZZ (zurabz@gmail.com)
Date: Sat Sep 27 2008 - 20:25:00 ART
ip prefix-list ABC seq 7 deny 200.20.4.0/23 le 24<http://200.20.4.0/22R4#sh>
ip prefix-list ABC seq 10 permit 0.0.0.0/0 le 32
or
ip prefix-list ABC seq 7 deny 200.20.4.0/23 ge 24 le
24<http://200.20.4.0/22R4#sh>
ip prefix-list ABC seq 10 permit 0.0.0.0/0 le 32
On Sat, Sep 27, 2008 at 7:18 PM, Mohamed Tandou <dtandou@gmail.com> wrote:
> my bad. I want to use only one line. it is possible doing that with
> prefix-list ?
>
> On Sat, Sep 27, 2008 at 6:58 PM, ZZ <zurabz@gmail.com> wrote:
>
>> 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
>>>>>
>>>>>
>>>>> Blogs and organic groups at http://www.ccie.net
>>>>>
>>>>> _______________________________________________________________________
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