[nsp] Memory required for a given number of routes

[Lupi, Guy]

If you have a router that has a similar number of routes you can do a "show
ip route summary", it will list the memory consumed by routes in each
category such as static, ospf, bgp etc.  Not the most scientific method but
it should give you a rough idea of what is being consumed on a similar
router.

-----Original Message-----
From: rwcrowe at comcast.net [mailto:rwcrowe at comcast.net] 
Sent: Wednesday, July 07, 2004 10:54 AM
To: cisco-nsp at puck.nether.net
Subject: [nsp] Memory required for a given number of routes


Hello,
      This tool/procedure might be available somewhere, so just bear with
me. I am looking for a way for pre- implementation to calculate the requires
memory for a given number of routes. Say a customer needs to have 45,000
routes in their routing table, what would be the minimum memory required for
just the routes ? Obviously you need extra memory for routing functions and
processes.
    It doesnt have to be an exact amount but just a round about figure. Also
if it could be generic enough so you dont have to specify BGP, OSPF, etc as
they do take differnt memory requirements.  If the router is already
implemented you could do a "show ip route summary" but I am looking for this
as a pre-sales/pre-implementation method. 
Thanks
Rob
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