Re: Conditional Advertise

From: Scott Morris <smorris_at_ine.com>
Date: Sat, 29 Aug 2009 09:23:17 -0400

Multiple matches in an ACL or Prefix List are OR matches.

Multiple route-map stanza are OR matches.

If you have multiple matches in the same stanza, that would be an AND
logic. So I'd make multiple prefix lists and do mutiple matches in the
same route-map statement.

HTH,

 

*Scott Morris*, CCIE/x4/ (R&S/ISP-Dial/Security/Service Provider) #4713,

JNCIE-M #153, JNCIS-ER, CISSP, et al.

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Ahmed Ejaz wrote:
> Try this:
>
> ip prefix-list TRACK permit 10.1.1.0/24
> ip prefix-list TRACK permit 20.2.2.2/32
> ip prefix-list ADVER permit 192.168.10.0/24
>
> route-map ADVERTISE permit 10
> match ip address prefix ADVER
>
> route-map EXIST permit 10
> match ip address prefix TRACK
>
> router bgp xyz
> advertise-map ADVERTISE exist-map EXIST
>
> HTH
>
> Ahmed
>
> On Sat, Aug 29, 2009 at 10:57 AM, Sagar Rane <sagar.ccie_at_gmail.com> wrote:
>
>
>> Hi All,
>>
>> I have requirement where, bgp should check its bgp routing table for two
>> routes eq (10.1.1.0/24 and 20.2.2.2/32) and only if both routes are
>> present,
>> it should originate a route advertisement of 192.168.10.0/24.
>>
>> I have tried advertise-map and exist map, but how can we used exist-map to
>> check both the routes at the same time?
>>
>> Anyway how we can meet this requirement please let me know.
>>
>> Regards,
>> Sagar
>>
>>
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>
>
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Received on Sat Aug 29 2009 - 09:23:17 ART

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