Re: bgp

But it doesnt solve my problem - I know conditional advertisement

but in my case how can I say -

advertise 1.1.1.0/24 when Fake subnet in my BGP table ?

command syntax is
advertise-map and non-exist-map >>>

It would have been possible if command was

advertise-map and EXIST-map

On Thu, Nov 26, 2009 at 2:37 PM, Jared Scrivener
<lists_at_jaredscrivener.com>wrote:

> That's a pretty neat solution, Uchil: I like it.
>
> --
> Cheers,
>
> Jared Scrivener, CCIE3 #16983 (R&S, Security, Service Provider), CISSP
> Instructor, Mentor, Consultant
> Homepage: www.JaredScrivener.com <http://www.jaredscrivener.com/>
> Email: Jared_at_JaredScrivener.com
> Twitter: ascentience
> LinkedIn: www.linkedin.com/in/jaredscrivener
>
> On Thu, Nov 26, 2009 at 7:55 PM, Uchil Perera <uchil.groupstudy_at_gmail.com>wrote:
>
>> Hi,
>>
>> You can create a route pointing to a fake subnet and track it with IPSLA,
>> for IPSLA use an interface on the FW. Then use BGP conditional route
>> advertisement to advertise 1.1.1.0/24 subnet only if your fake subnet is
>> in
>> the BGP table. Please not for conditional BGP to work, subnets have to be
>> in
>> the BGP table, hence you need to advertise the fake subnet in BGP and
>> filter
>> it out the SP interface.
>>
>> Please refer below link
>>
>>
>> http://www.cisco.com/en/US/tech/tk365/technologies_configuration_example09186a0080094309.shtml
>>
>> Rgds
>>
>> Uchil Perera
>> CCIE# 18536
>> On Thu, Nov 26, 2009 at 9:00 AM, jack daniels <jckdaniels12_at_gmail.com
>> >wrote:
>>
>> > but even if I poll FW and track it ,
>> > how to apply this IP SLA POLL to BGP router-map or network statement.
>> >
>> > On Thu, Nov 26, 2009 at 1:23 PM, ajaz nawaz <ajaz.nawaz_at_gmail.com>
>> wrote:
>> >
>> > > IP SLA or other methods as suggested.
>> > >
>> > > Ajaz Nawaz
>> > > CCIE#15721
>> > >
>> > > 2009/11/26 jack daniels <jckdaniels12_at_gmail.com>
>> > >
>> > > > Hi,
>> > > >
>> > > > Subnets are same as in advertise map and conditional map , plzz
>> check
>> > the
>> > > > diag
>> > > >
>> > > > On Thu, Nov 26, 2009 at 1:15 PM, Shaughn Smith <
>> shaughn.s_at_cvnnet.co.za
>> > > > >wrote:
>> > > >
>> > > > > What about using an advertise-map in BGP ?
>> > > > >
>> > > > > -----Original Message-----
>> > > > > From: nobody_at_groupstudy.com [mailto:nobody_at_groupstudy.com] On
>> Behalf
>> > > Of
>> > > > > jack daniels
>> > > > > Sent: Thursday, November 26, 2009 9:37 AM
>> > > > > To: Cisco certification
>> > > > > Subject: bgp
>> > > > >
>> > > > > Hi All,
>> > > > >
>> > > > > I have a customer scenario where
>> > > > >
>> > > > >
>> > > > > ISP 2.2.2.1----2.2.2.2 router1.1.1.1/24 -------Switch -----------
>> > > > > 1.1.1.2/24FW------LAN
>> > > > >
>> > > > >
>> > > > > ISP and router are running BGP. Now I want to advertise the
>> > 1.1.1.0/24
>> > > > > when
>> > > > > FW is up if FW is down I dont want to advertise this subnet. I
>> have
>> > > > > redundancy so will use redundant media and firewall . my querriery
>> is
>> > > > > how
>> > > > > not to advertise in BGP 1.1.1.0/24when my FW is down.
>> > > > >
>> > > > >
>> > > > > Blogs and organic groups at http://www.ccie.net
>> > > > >
>> > > > >
>> > _______________________________________________________________________
>> > > > > Subscription information may be found at:
>> > > > > http://www.groupstudy.com/list/CCIELab.html
>> > > >
>> > > >
>> > > > Blogs and organic groups at http://www.ccie.net
>> > > >
>> > > >
>> _______________________________________________________________________
>> > > > Subscription information may be found at:
>> > > > http://www.groupstudy.com/list/CCIELab.html
>> > >
>> > >
>> > > Blogs and organic groups at http://www.ccie.net
>> > >
>> > >
>> _______________________________________________________________________
>> > > Subscription information may be found at:
>> > > http://www.groupstudy.com/list/CCIELab.html
>> >
>> >
>> > Blogs and organic groups at http://www.ccie.net
>> >
>> > _______________________________________________________________________
>> > Subscription information may be found at:
>> > http://www.groupstudy.com/list/CCIELab.html
>>
>>
>> Blogs and organic groups at http://www.ccie.net
>>
>> _______________________________________________________________________
>> Subscription information may be found at:
>> http://www.groupstudy.com/list/CCIELab.html

Blogs and organic groups at http://www.ccie.net
Received on Thu Nov 26 2009 - 14:43:19 ART