Re: Split horizon in OSPF???

From: Darby Weaver <ccie.weaver_at_gmail.com>
Date: Fri, 10 Jul 2009 10:12:20 -0400

It's a rumor of a rumor.

Quite frankly it does not seem to fit into the same classification as any
other OEQ I've seen yet and I really doubt it was ever an OEQ.

On Fri, Jul 10, 2009 at 9:49 AM, Mark Matters <markccie_at_gmail.com> wrote:

> 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 - 10:12:20 ART

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