Re: split horizon

hi jack,

PE1 import 1.1.1.0/24. This route will be never exported from PE1.
To make your hub work as transit for spokes, you need to advertise a route
from hub that include 1.1.1.0/24 and 2.2.2.0/24. Try with default route and
remember to add default-information originated where needed.

Packet from spoke1 go to hub (by default router). From Hub go to spoke2 (IP
lookup).

mirco.

On Tue, Jan 5, 2010 at 7:39 PM, jack daniels <jckdaniels12_at_gmail.com> wrote:

> I think my case - its due to rule of IGP ..not advertise route back to the
> neighbour from whom u learnt the route.
>
>
> On Wed, Jan 6, 2010 at 12:07 AM, jack daniels <jckdaniels12_at_gmail.com
> >wrote:
>
> > But if you see my scenario OSPF is running with PE ( same neighbour IP)
> >
> > CE-PE protocol is OSPF
> >
> > On Wed, Jan 6, 2010 at 12:01 AM, <olukolade_at_gmail.com> wrote:
> >
> >> Yes. With ospf, It will advertise out the same interface but to a
> >> different neighbor.
> >>
> >> Regards
> >>
> >> Kolade
> >> ------Original Message------
> >> From: jack daniels
> >> Sender: nobody_at_groupstudy.com
> >> To: Marko Milivojevic
> >> Cc: Cisco certification
> >> ReplyTo: jack daniels
> >> Subject: Re: split horizon
> >> Sent: Jan 5, 2010 7:19 PM
> >>
> >> I understand that but ,u mean in OSPF
> >>
> >> IF i recive 1.1.1.0/24 on G0/1 of HUB
> >>
> >> I'LL advertise 1.1.1.0/24 on Gi0/1 (SAME INTERFACE) of HUB
> >>
> >>
> >>
> >>
> >> On Tue, Jan 5, 2010 at 11:44 PM, Marko Milivojevic <markom_at_ipexpert.com
> >> >wrote:
> >>
> >> > On Tue, Jan 5, 2010 at 19:00, jack daniels <jckdaniels12_at_gmail.com>
> >> > wrote:
> >> > > Hi guys,
> >> > >
> >> > > I have a scenario where in MPLS VPN - HUB and SPOKE.
> >> > >
> >> > > CE-PE protocol is OSPF everywhere
> >> > >
> >> > >
> >> > > HUB is recieving routes from one SPOKE on int G0/1 and not
> >> advertiseing
> >> > on
> >> > > same (SPLIT horizon).
> >> > >
> >> > > In ospf how can we overcome such issue.
> >> >
> >> > OSPF is a link state protocol. It doesn't use split horizon (at least
> >> > not within the same area and even in multiarea, the behavior is not
> >> > called that). You are probably having some other issue...
> >> >
> >> > --
> >> > Marko Milivojevic - CCIE #18427
> >> > Senior Technical Instructor - IPexpert
> >> >
> >> > Mailto: markom_at_ipexpert.com
> >> > Telephone: +1.810.326.1444
> >> > Fax: +1.810.454.0130
> >> > Community: http://www.ipexpert.com/communities
> >>
> >>
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> >>
> >>
> >>
> >>
> >>
> >>
> >> Sent from my BlackBerry. wireless handheld from Glo Mobile.
>
>
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Received on Tue Jan 05 2010 - 20:02:17 ART