From: Huang Laurence (huangyinxiao@gmail.com)
Date: Fri Apr 06 2007 - 21:30:37 ART
Hi all,
My topology like this:
R1(point-to-point)----------(FR)--------------(point-to-point)R2
There is no hub and spoken. And I enable the eigrp in this link. I know
that in this situation, eigrp split horizon is disable by default. So I want
to enable split horizon to prevent rooting loops. As far as I know, two
commands can enable split horizon. One is "ip split-horizon"
which is for rip, and the other is "ip split-horizon eigrp 10" which is for
eigrp.
In this situation, after I typed "ip split-horizon eigrp 10", which method
or command can show that the command "ip split-horizon eigrp 10" take
effect?
Cheers,
Laurence
On 07/04/07, mariam.tatevik@yahoo.com <mariam.tatevik@yahoo.com> wrote:
>
> first of all, you have to check the ip subnet:
> Are you using the same or not?
> Because you can have the same ip address/subnet on
> subinterfaces.
>
> For the same subnet (multipoint hub-spokes) I'd say you must
> "reach" no ip split-horizon for both RIP & EIGRP
>
>
>
> From: "Todd, Douglas M." <DTODD@PARTNERS.ORG>
> To: "Edouard Zorrilla" <ezorrilla@tsf.com.pe>, <mariam.tatevik@yahoo.com>,
> <ccielab@groupstudy.com>
> Subject: RE: IP split-horizon
> Date: Fri, 6 Apr 2007 14:15:55 -0400
> Reply-to: "Todd, Douglas M." <DTODD@PARTNERS.ORG>
> Thread-index: Acd4c33I4X3bkg79RYmpYiQr/x+nAQAAuuug
> Thread-topic: IP split-horizon
>
> Depends on you setup and what you are trying to a complish. If you need
> the
> hub
> router to announce routes it learns through the same interface it's
> advertising
> that route, then yes you need to disable it.
>
> The best way to figure this is out in a lab is to test it out. Have a hub
> and
> spoke setup: one setup uses multiple PTP ints, thus no need for split
> horizons;
> the second uses multipoint setup with on network. You will find that the
> routes that the hub learns from the remote routers will not be learned by
> all
> the remote routers because of split horizons/poizon reverse etc. If you
> disable
> split horizons then you will see the routers learn all routes adv by the
> hub.
>
>
> DMT
>
> -----Original Message-----
> From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of
> Edouard
> Zorrilla
> Sent: Friday, April 06, 2007 1:38 PM
> To: mariam.tatevik@yahoo.com; ccielab@groupstudy.com
> Subject: Re: IP split-horizon
>
> Hello,
>
> But if they are in diferent sub-interfaces, do I need to disable
> split-horizont
> ?
>
> Regards
>
> ----- Original Message -----
> From: <mariam.tatevik@yahoo.com>
> To: <ccielab@groupstudy.com>
> Sent: Thursday, April 05, 2007 8:07 AM
> Subject: Re: IP split-horizon
>
>
> > 1) you do need to disable split-horizon for EIGRP
> > on all multipoints FR interfaces due to TTL
> > 2) just "ip split-horizon" is for RIP
> >
> > HTH
>
> _______________________________________________________________________
> Subscription information may be found at:
> http://www.groupstudy.com/list/CCIELab.html
This archive was generated by hypermail 2.1.4 : Tue May 01 2007 - 08:28:35 ART