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NAT question

Does anybody know how many static NAT can I configure on a Cisco 3640 Router, may I take this as reference for the number:

Q. How many concurrent NAT sessions are supported in Cisco IOS NAT?

A. The NAT session limit is bound by the amount of available DRAM in the router. Each NAT translation consumes about 160 bytes in DRAM. As a result, 10,000 translations (more than would generally be handled on a single router) can consume about 1.6 MB. Therefore, a typical routing platform has more than enough memory to support thousands of NAT translations.

And What kind of routing performance can I expect when I use Cisco IOS NAT?

Best Regards,

Berlitz Maldonado

1 REPLY
Gold

Re: NAT question

NAT will process switch. So performance will be slower. Depending on what version of code you are running there have been some translation issues with NAT when the router was running CEF.

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