Re: prefix-list implict deny ? | bgp ORF questions

sweet, nice find i was looking for it just didnt see it...

too many options in BGP and i dont have enough eyes to see them all...

thanks..
garry..
 --
Garry L. Baker

"With sufficient thrust, pigs fly just fine..." - RFC 1925

On Mon, Apr 11, 2011 at 3:34 PM, Daniel Kratz <dkratz_at_gmail.com> wrote:

> Garry,
>
> Only one comment:You can verify the received prefix-list with the command
> "show ip bgp neighbor x.x.x.x received prefix-filter".
>
>
http://www.cisco.com/en/US/docs/ios/iproute_bgp/command/reference/irg_bgp5.ht
ml#wp1159860
>
>
> []4s
> Kratz
>
>
> 2011/4/11 garry baker <baker.garry_at_gmail.com>
>
>> is their a implicit deny in prefix list as access-list ?:
>>
>>
>>
http://www.cisco.com/en/US/docs/ios/iproute_bgp/command/reference/irg_bgp2.ht
ml#wp1114171
>> "An implicit deny is applied to traffic that does not match any
>> prefix-list
>> entry"
>>
>> in bgp ORF how do i check if the filtering router received the prefix list
>> ?:
>> you can see that ORF capability is running, but i did not find a way to
>> see
>> the acutal prefix-list, but you can run the command 'show ip bgp neighbors
>> x.x.x.x advertised-routes' to see if they match your prefix-list, over
>> course you will see this on the router you sent the prefix-list from also
>> with normal 'show ip bgp' but that just might be the "normal" function of
>> the prefix-list in command on the neighbor statemen which means you still
>> recieved the prefixes from the neighbor and just filtered them....
>>
>> you can test with 'show ip bgp neighbors x.x.x.x received-routes' after
>> you
>> configure 'soft-reconfiguration inbound' to see if you actually received
>> them and then filtered or not..
>>
>>
>>
>> cant i use access-list in bgp ORF as opposed to prefix list ?
>> only works with prefix-list from what i can see:
>>
>>
>>
>> --
>> Garry L. Baker
>>
>> "With sufficient thrust, pigs fly just fine..." - RFC 1925
>>
>>
>>
>> On Mon, Apr 11, 2011 at 10:32 AM, imran ali <immrccie_at_gmail.com> wrote:
>>
>> > hi all
>> >
>> >
>> > is their a implicit deny in prefix list as access-list ?
>> >
>> > in bgp ORF how do i check if the filtering router received the prefix
>> list
>> > ?
>> >
>> > cant i use access-list in bgp ORF as opposed to prefix list ?
>> >
>> >
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> --
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Received on Mon Apr 11 2011 - 16:16:27 ART