From: Arun Arumuganainar (aarumuga@hotmail.com)
Date: Thu Dec 08 2005 - 03:21:48 GMT-3
Hi Brian ,
I have tried this with ISIS . Its was working perfectly .
Thanks and Regards
Arun
----- Original Message -----
From: "Brian McGahan" <bmcgahan@internetworkexpert.com>
To: "Andrew Lissitz (alissitz)" <alissitz@cisco.com>; "Mike Flanagan"
<mikenoc@mindspring.com>; "Arun Arumuganainar" <aarumuga@hotmail.com>
Cc: "Cisco certification" <ccielab@groupstudy.com>
Sent: Thursday, December 08, 2005 11:02 AM
Subject: RE: Injecting default route only with loss of IP route WAS: Re: IE
Lab 6 conditional default route advertisement
> Only BGP supports this via conditional advertisement.
>
> Brian McGahan, CCIE #8593
> bmcgahan@internetworkexpert.com
>
> Internetwork Expert, Inc.
> http://www.InternetworkExpert.com
> Toll Free: 877-224-8987 x 705
> Outside US: 775-826-4344 x 705
> 24/7 Support: http://forum.internetworkexpert.com
> Live Chat: http://www.internetworkexpert.com/chat/
>
>
> > -----Original Message-----
> > From: Andrew Lissitz (alissitz) [mailto:alissitz@cisco.com]
> > Sent: Wednesday, December 07, 2005 11:02 PM
> > To: Mike Flanagan; Brian McGahan; Arun Arumuganainar
> > Cc: Cisco certification
> > Subject: RE: Injecting default route only with loss of IP route WAS:
> Re:
> > IE Lab 6 conditional default route advertisement
> >
> > Hey Arun, Mike, Brian, and group,
> >
> > In a separate email, Arun suggested the default-information command
> that
> > referenced a route-map. I configured this and got it to work for a
> > route that was in the routing table. Nice feature, thanks Arun for
> > suggesting this.
> >
> > As Mike asks however, how to do this for a route not in the table via
> an
> > IGP?
> >
> >
> >
> > -----Original Message-----
> > From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf
> Of
> > Mike Flanagan
> > Sent: Wednesday, December 07, 2005 6:25 PM
> > To: Brian McGahan
> > Cc: Cisco certification
> > Subject: Re: Injecting default route only with loss of IP route WAS:
> Re:
> > IE Lab 6 conditional default route advertisement
> >
> > I was thinking of doing this in the IGP like OSPF. Similar to how
> you
> > have in your Internetwork Expert lab 6 for conditional default route
> > injection. Only difference is that instead of advertising when you
> have
> > a route only advertising when the out leaves.
> >
> >
> > On Dec 7, 2005, at 6:11 PM, Brian McGahan wrote:
> >
> > > You could do this with BGP conditional advertisement.
> > >
> > >
> > > HTH,
> > >
> > > Brian McGahan, CCIE #8593
> > > bmcgahan@internetworkexpert.com
> > >
> > > Internetwork Expert, Inc.
> > > http://www.InternetworkExpert.com
> > > Toll Free: 877-224-8987 x 705
> > > Outside US: 775-826-4344 x 705
> > > 24/7 Support: http://forum.internetworkexpert.com
> > > Live Chat: http://www.internetworkexpert.com/chat/
> > >
> > >
> > > -----Original Message-----
> > > From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf
> > > Of Mike Flanagan
> > > Sent: Wednesday, December 07, 2005 3:29 PM
> > > To: Mike Flanagan
> > > Cc: Cisco certification
> > > Subject: Injecting default route only with loss of IP route WAS:
> > > Re: IE
> > > Lab 6 conditional default route advertisement
> > >
> > > Is there a way to only send a default route if you loose a route
> in
> >
> > > the IP routing table ?
> > >
> > >
> > >
> > > On Dec 7, 2005, at 12:06 PM, Mike Flanagan wrote:
> > >
> > >
> > >> In this section for injecting a default route you only do it if
> your
> >
> > >> route-map matches the networks in question. Like for instance as
> long
> >
> > >> as I have a route to 192.10.1.0/24 advertise the default route.
> Well
> > >> what if I wanted to advertise the default route if I lost a route
> in
> > >> my route table ? Like for instance lets say if I lost my connection
> > >> to BB2 would I use
> > >>
> > >> router ospf 1
> > >> default-information originate always route-map CONDITION
> > >>
> > >> ip prefix-list BB2 seq 5 permit 192.10.1.0/24
> > >>
> > >> ip prefix-list BB3 seq 5 permit 204.12.1.0/24
> > >>
> > >> route-map CONDITION deny 10
> > >> match ip address prefix-list BB2
> > >>
> > >> rute-map CONDITION deny 20
> > >> match ip address prefix-list BB3
> > >>
> > >> I think with this I would only advertise the default route if I
> lose
> >
> > >> either route in my route table is this correct ?
> > >>
> > >> Also with this solution would I only advertise the default route
> if
> > >> I lose both connections at the same time ?
> > >>
> > >> router ospf 1
> > >> default-information originate always route-map CONDITION
> > >>
> > >> ip prefix-list BB2 seq 5 permit 192.10.1.0/24 ip prefix-list BB2
> seq
> > >> 5 permit 204.12.1.0/24
> > >>
> > >> route-map CONDITION deny 10
> > >> match ip address prefix-list BB2
> > >>
> > >>
> _____________________________________________________________________
> > >> _
> > >>
> > >
> > >
> > >> _
> > >> Subscription information may be found at:http://www.groupstudy.com/
> > >> list/CCIELab.html
> > >>
> > >
> > >
> ______________________________________________________________________
> > > _
> > > Subscription information may be found at:
> > > http://www.groupstudy.com/list/CCIELab.html
> > >
> > >
> ______________________________________________________________________
> > > _
> > > Subscription information may be found at:
> > > http://www.groupstudy.com/list/CCIELab.html
> >
> >
> _______________________________________________________________________
> > Subscription information may be found at:
> > http://www.groupstudy.com/list/CCIELab.html
>
> _______________________________________________________________________
> Subscription information may be found at:
> http://www.groupstudy.com/list/CCIELab.html
This archive was generated by hypermail 2.1.4 : Mon Jan 09 2006 - 07:07:50 GMT-3