Re: OSPF WG Charter Proposal

"Manral, Vishwas" <VishwasM@NETPLANE.COM> Wed, 30 October 2002 12:52 UTC

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Date: Wed, 30 Oct 2002 07:57:18 -0500
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From: "Manral, Vishwas" <VishwasM@NETPLANE.COM>
Subject: Re: OSPF WG Charter Proposal
To: OSPF@DISCUSS.MICROSOFT.COM
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Hi Rohit,

I am not claiming that with flooding optimizations the network
meltdowns/failures, which the paper observes "could" be typical(its been
some time since I read the paper though), would be solved, not optimizing
aggravates the problem further.

The same is true about our draft. Though flooding optimizations by
themselves wont suffice they do help solve part of the problem.

I think if "flooding optimizations" can be achieved without cluttering up
the spec/code, it would be helpful, besides from the two documents I refer
to it could mean the problem has been seen by the operators too(though I am
not sure of the no workarounds in site part of it).

Thanks,
Vishwas

-----Original Message-----
From: Rohit Dube [mailto:rohit@XEBEO.COM]
Sent: Wednesday, October 30, 2002 12:21 AM
To: OSPF@DISCUSS.MICROSOFT.COM
Subject: Re: OSPF WG Charter Proposal


On Tue, 29 Oct 2002 08:22:54 -0500 "Manral, Vishwas" writes:
=>Hi Rohit/Acee,
=>
=>>Is anybody running OSPF networks hitting this problem with no workarounds
=>in sight?
=>I am not sure about this statement exactly, however I do think it can be
=>helpful in a few cases. A recent paper by Aman Shaikh/Albert Greenberg
=>et.al. about analyzing OSPF for Enterprise is one such case. One of our
=>drafts "Congestion Avoidance and Control for OSPF networks" talks about
=>problems that have been caused by flooding overload in production
networks.
[snip]

Vishwas,

I am familiar with Aman's work. The problem identified there was
that of (a) sub-optimal network/ospf configuration and (b) broken router.
This does not ofcourse justify building new protocol mechanisms, thereby
complicating the protocol.

I will look at the congestion again to see if/why it concludes otherwise.

Regards,
--rohit.