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Maximum number of simultaneous NAT translations

Hi all...

Does anyone know how many simultaneous NAT translations a low end device such as a Cisco RV016 supports?

I  know this is a low end device but I see no reason that with a typical  allocaiton of  220 bytes per entry and modern CPU's to walk the tree that this RV016  could not support 500 to 1000 easily?

http://www.cisco.com/warp/public/cc/pd/iosw/ioft/ionetn/prodlit/792_pp.htm#wp39411

Any  reasonable device should support 500 to 1000? I believe a linux box  would do it effortlessly for 500 tcp/udp connections ,mapped via  NAT at 100Mbits/second but I would prefer a  cisco router any day.

I am looking for at least 500+ users  in on the WAN side to 1 or 2 servers on the LAN side behind the NAT wall.

Of course worst case would assume 1 to 1 NAT simultaneous translations for numbers.

What would be the mimum low end cisco gateway router I could use to do this 500 to 1? 1000 to 1?

Am I way off on this?

Thanx.

-Glenn

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