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Re: [RAM] The mapping problem: rendezvous points?

Eliot Lear <lear@cisco.com> Thu, 10 May 2007 05:07 UTC

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Date: Thu, 10 May 2007 07:07:20 +0200
From: Eliot Lear <lear@cisco.com>
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To: David Conrad <drc@virtualized.org>
Subject: Re: [RAM] The mapping problem: rendezvous points?
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David Conrad wrote:
>>> I'll ask again:  how does this ARP thing work again?
>> First off, all the ARP implementations I know of queue the packet 
>> during the loopkup, i.e., no loss.
>
> That's what I thought, but folks have been saying that routers don't 
> queue anymore.

Queuing is one thing.  By some definition, we could probably say that 
routers are really all just fancy queues.  But when the latency could be 
in the *seconds* for some destinations, that's no longer queuing.  
That's storage.  That's NOT what routers do today.  Also, please 
consider the problem in the aggregate when you bring a device into 
service.  How many queries must it make?  One?  Tens?  Hundreds?  
THOUSANDS?  If the device sits on the PE or CE (for large CEs), that 
latter number may be what we're talking about.

Eliot

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