[c-nsp] Sup720 maximum memory?

[Jared Mauch]

On Thu, Aug 10, 2006 at 01:49:12PM +0200, Gert Doering wrote:
> Hi,
> 
> On Thu, Aug 10, 2006 at 12:49:45PM +0200, Edoardo Martelli wrote:
> > The upgrade is possible, we made it on a sup3B because of a lot of BGP
> > peers.
> > MEM-MSFC3-1GB is what you need to upgrade the route processor DRAM.
> > There is also MEM-SUP720-SP-1GB that is the upgrade for the  switch
> > processor DRAM.
> > 
> > You can also evalutate WS-F6K-PFC3BXL: it comes with the card to upgrade
> > the  sup3B to  3BXL and also the two 1GB sticks to upgrade both the
> > router processor and the switch processor DRAM.
> 
> I know that it has been asked before, but either I've never seen the
> answer, or forgotten what it was - in that case, sorry.
> 
> What exactly is the switch processor DRAM used for?  Why could it want
> to have 1 Gb memory?

	We have devices with 1G MFSC and 512m SUP.

	The sup memory usage looks like:

Router-sp#sh mem summary 
                Head    Total(b)     Used(b)     Free(b)   Lowest(b)  Largest(b)
Processor   42B71A60   416112212   195668664   220443548   193894580   129230112
      I/O    8000000    67108864    10418736    56690128    56690128    56690104

> I assume route processor DRAM is used for IOS, BGP tables (RIB), CEF
> tables (FIB), and all the other things IOS wants memory for.
> 
> TCAM space is needed for FIB and ACLs.
> 
> switch processor DRAM?  IOS, CAM tables (mac addresses), ...?

	Login and take a peek :)

	- jared

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Jared Mauch  | pgp key available via finger from jared at puck.nether.net
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