Re: Conditional Advertise

Hi Ahmed,

I have tried it and it doesn't work, just see that logic, the exist match
crieteria is met , avertise map will advertised it. Now give it a thought,
if only tracl1 prefix is avilable , it meets the condition from route-map
line 0 and doesn't go to line 20.

Hence 192.168 is advertised.

Have you tried it and has it worked for you?

Regards,
Sagar

On Sat, Aug 29, 2009 at 7:21 AM, Ahmed Ejaz <aahmedejaz_at_gmail.com> wrote:

> I think the goal is to advertise the 192 route if both 10 and 20 networks
> in the routing table exist. What you have mentioned is same as my config i-e
> I am matching 2 networks in one prefix list and you are matching 2 networks
> in 2 prefix lists but the route-map will do the same as both the matches are
> made in a single statement. If the requirement was to advertise the 192
> network if either 10 or 20 exist (one of them) then the route map would
> change for example:
>
> route-map ADVERTISE permit 10
> match ip address prefix TRACK1
>
> route-map ADVERTISE permit 20
> match ip address prefix TRACK2
>
> REgards
>
> Ahmed.
>
> On Sat, Aug 29, 2009 at 11:15 AM, Divin Mathew John <divinjohn_at_gmail.com
> > wrote:
>
>> Wont this trigger the advertise-map if one route is there in the routing
>> table?
>>
>> i thinkthis would do the dew.
>>
>> ip prefix-list TRACK1 permit 10.1.1.0/24
>> ip prefix-list TRACK2 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 match-all permit 10
>> match ip address prefix TRACK1
>> match ip address prefix TRACK2
>>
>> router bgp xyz
>> advertise-map ADVERTISE exist-map EXIST
>>
>>
>> On Sat, Aug 29, 2009 at 11:42 AM, Ahmed Ejaz <aahmedejaz_at_gmail.com>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 - 07:59:18 ART