Re: DB Synchronization

Shanthi Pendyala <spendyala@LUMINOUS.COM> Fri, 29 August 2003 18:14 UTC

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Date: Fri, 29 Aug 2003 10:40:25 -0700
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From: Shanthi Pendyala <spendyala@LUMINOUS.COM>
Subject: Re: DB Synchronization
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hi,

Router A will request a copy of the stale LSA from B even though it has the more upto-date LSA.

It will then immediately flood the updated LSA after
increasing the seq no.

so the DB exchange will complete..

shanthi kiran

-----Original Message-----
From: Parag Deshpande [mailto:paragdeshpande@SDKSOFT.COM]
Sent: Friday, August 29, 2003 10:13 AM
To: OSPF@PEACH.EASE.LSOFT.COM
Subject: DB Synchronization


Hi,

I had a doubt ->

2 routers A and B have an ospf adjacency.

Router A sends an ASExt lsa for network N1/m1 with LSID = N1.
Then Router A goes down & comes up again & reoriginates
ASExt lsa for network N1/m2 with LSID = N1 and then
gets adjacent with Router B.

**where m1 != m2 & they are multiple of 8. (/8, /16..)
also assuming that all other parameters are same.

However in this case the DB Exchange will fail to
synchronize these LSAs bcoz they appear
to be similar- LSID, SeqNum, Checksums being equal**
and thus will have to wait for the LSA to get refreshed.

I was wondering whether this can be resolved faster.

Thanks
Parag

Re: DB Synchronization Shanthi Pendyala
Re: DB Synchronization Parag Deshpande