[nsp] Supervisor engine 2 DRAM

[Tim Stevenson]

Nope, that's incorrect.

The MAC table and adj table memories are in the PFC and both are 
independent of the DRAM.

DRAM on the sup is used to store L2 protocol data structures (think 
spanning tree, etc) and shadow copies of the various L3 h/w forwarding 
tables that are contained in the PFC.

Tim.

At 09:00 AM 5/31/2004, cisco-nsp-request at puck.nether.net averred:
>Message: 1
>Date: Sun, 30 May 2004 13:02:38 -0400
>From: Deepak Jain <deepak at ai.net>
>Subject: Re: [nsp] Supervisor engine 2 DRAM
>To: ringwyrm27 <ringwyrm27 at comcast.net>
>Cc: cisco-nsp at puck.nether.net
>Message-ID: <40BA13AE.6030503 at ai.net>
>Content-Type: text/plain; charset=us-ascii; format=flowed
>
>
>
>ringwyrm27 wrote:
>
> > The Sup2 will take a
> >
> >>512MB chip
> >>as well, but its overkill.
> >
>
>If I recall the arch of a Sup2 properly, isn't the memory on it used for
>L2 forwarding... so if say one had about 400,000 directly connected
>hosts or something similar, the ram might come in handy?
>
>Thanks,
>
>DJ


Tim Stevenson, tstevens at cisco.com
Routing & Switching CCIE #5561
Technical Marketing Engineer, Catalyst 6500
Cisco Systems, http://www.cisco.com
IP Phone: 408-526-6759
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