Fwd: [OSPF] SPF calculation in OSPF

"Santosh Esale" <s.esale@gmail.com> Wed, 30 August 2006 09:50 UTC

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Date: Wed, 30 Aug 2006 15:12:10 +0530
From: Santosh Esale <s.esale@gmail.com>
To: ospf@ietf.org
Subject: Fwd: [OSPF] SPF calculation in OSPF
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---------- Forwarded message ----------
From: Santosh Esale <s.esale@gmail.com>
Date: Aug 30, 2006 11:27 AM
Subject: Re: [OSPF] SPF calculation in OSPF
To: Navina Balan <navinab@gmail.com>

 Full spf calclualtion need to run again if there is any change in the
topology of area. If neighbour changes from Full to any of the lower state
or lower state to full state , Router LSA will be regenerated again for this
as well the neighbouring router and DR will regenerate network lsa(in case
of boradcast link) which will result in topology change.

If summary or external LSAs are withdrawn or added, most of the
implementation runs incremental SPF.

Thanks
Santosh


 On 8/30/06, Navina Balan <navinab@gmail.com> wrote:

>  Hi all,

I have a doubt in OSPF.

Can you let me know, if Nbr Change occurs, do SPF calculation needs to done
again.

TIA
Swapna

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