RE: Split horizon in OSPF???

I believe answer to this question is "NO"
Split horizon is loop avoidance feature in Distance vector protocol. Where the routing information received on an interface will not go out on same interface. Since OSPF is a link state protocol and it doesn't send routing table to neighbor, so the answer is "NO"

Regards,
Girish Malla
 

-----Original Message-----
From: nobody_at_groupstudy.com [mailto:nobody_at_groupstudy.com] On Behalf Of Mark Matters
Sent: Friday, July 10, 2009 8:49 AM
To: Darby Weaver
Cc: Manu Ohri (mohri); Naufal Jamal; ccielab_at_groupstudy.com
Subject: Re: Split horizon in OSPF???

Ok the RFC does go into how OSPF uses split-horizon. "
RFC3509 - Alternative Implementations of OSPF Area Border Route

OSPF prevents
   inter-area routing loops by implementing a split-horizon mechanism,
   allowing ABRs to inject into the backbone only Summary-LSAs derived
   from the intra-area routes, and limiting ABRs' SPF calculation to consider
   only Summary-LSAs in the backbone area's link-state database."

But where on the doc cd does it state that OSPF uses split-horizon? It
doesn't. If this was a OEQ, then it's a trick question in my opinion.

On Thu, Jul 9, 2009 at 10:51 PM, Darby Weaver <ccie.weaver_at_gmail.com> wrote:

> RFC3509
>
>
>
>
> On Thu, Jul 9, 2009 at 6:10 PM, Manu Ohri (mohri) <mohri_at_cisco.com> wrote:
>
> > No Split Horizon in OSPF or any link state protocols. It is on in
> > distance vector to protect against loops.
> >
> > Regards
> >
> >
> >
> > -----Original Message-----
> > From: nobody_at_groupstudy.com [mailto:nobody_at_groupstudy.com] On Behalf Of
> > Naufal Jamal
> > Sent: Thursday, July 09, 2009 11:33 AM
> > To: ccielab_at_groupstudy.com
> > Subject: Split horizon in OSPF???
> >
> > Hi all,
> >
> > someone recently asked me a question that is there any way to disable
> > split horizon in OSPF as in case of eigrp or NBMA n/w?got pretty
> > confused.can any one help or send me a link to understand it better.
> >
> > Naufal Jamal
> >
> >
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Received on Fri Jul 10 2009 - 22:51:21 ART