07-06-2021 04:29 AM
Hi all
I'm looking for a Cisco device in order to have large scale NAT (CGN).
Anyone can advise me how to select suitable device (hardware) either any calculator application which can show what hardware would be suit.
I've about 1Tbps traffic and about 100K online user.
Also I've to keep NAT logs on a server (Syslog)
07-06-2021 05:55 AM
Are you Looking FW or Routers here :
A. The NAT session limit is bounded by the amount of available DRAM in the router. Each NAT translation consumes about 312 bytes in DRAM. As a result, 10,000 translations (more than would generally be handled on a single router) consume about 3 MB. Therefore, typical routing hardware has more than enough memory to support thousands of NAT translations.
https://www.cisco.com/c/en/us/support/docs/ip/network-address-translation-nat/26704-nat-faq-00.html
07-06-2021 07:32 AM
Thankyou Balaji
Do you know how I can monitor the amount of RAM which are used by NAT (The command that shows memory usage by NAT I mean)
07-06-2021 07:54 AM
I general Monitor before and After NAT Enable :
#show platform resources
07-06-2021 07:59 AM
May I use "clear ip nat translation * " ??
07-06-2021 08:31 AM
that is to clear NAT, yes you can do that.
07-07-2021 01:46 AM
I did but nothing changed before and after doing this command.
Amount of memory was fixed !!!
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