So that means I must run OSPF in the localized mobility
management domain,
right? Does IS-IS have this feature too? Also, we do want
something that
works well with MPLS, due to the traffic engineering
considerations, as
mentioned.
jak
----- Original Message -----
From: "Pekka Savola" <pekkas netcore.fi>
To: "James Kempf" <kempfdocomolabs-usa.com>
Cc: <netlmmngnet.it>
Sent: Monday, May 15, 2006 12:26 PM
Subject: Re: [netlmm] a couple of high-view questions
> On Mon, 15 May 2006, James Kempf wrote:
>> The primary issue when I looked at this 9 months
ago was the amount of
>> memory required in all the routers within the
routed localized mobility
>> management domain. I don't have the figures handy
but it was a
>> considerable amount (i.e. didn't look
cost-effective) for the kind of
>> scalability we're interested in (Tokyo
Metropolitan Area for example).
>
> With OSPF and stub areas, only one aggregation router
needs to have full
> routes. ARs only have routes about hosts connected to
them.
>
>> A secondary issue is the amount of time required
for the host routes to
>> propagate.
>
> With OSPF and stub areas, the AR simply sends a routing
update to the
> aggregation router, and it need not propagate further.
I.e., there is no
> propagation or convergence issue.
>
> --
> Pekka Savola "You each name
yourselves king, yet the
> Netcore Oy kingdom bleeds."
> Systems. Networks. Security. -- George R.R. Martin: A
Clash of Kings
>
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