You can set the amount of time a translation times out and get's cleared. It
sounds like yours are sitting around for longer then normal.
ip nat translation timeout <seconds>
When port translation is not configured, translation entries time out after
24 hours. This time can be adjusted with the above command or the following
variations:
ip nat translation udp-timeout <seconds>
ip nat translation dns-timeout <seconds>
ip nat translation tcp-timeout <seconds>
ip nat translation finrst-timeout <seconds>
-----Original Message-----
From: Tai Ngo [mailto:[EMAIL PROTECTED]]
Sent: Wednesday, August 09, 2000 8:37 PM
To: [EMAIL PROTECTED]
Subject: NAT Problems
Hi All,
I am having problems using NAT on my Cisco 3620 router. NAT translations
works fine but for some reason, the cpu utilization on my router starts
increasing to about 91% after a few days. When access to the Internet gets
slow, I also notice that I have lots of dynamic address translation when I
do a "show ip nat stat", over 1000 active translation with dyanmic
translations being the majority and when my router is really slow, around
6000 dynamic translation. When I do a "clear ip nat trans *", the router
returns to normal, cpu utilization also drops to around 10%. Should I have
to do this every so often or am I missing something from my config file.
I am currently running IOS 12.0(5) and have 48MB RAM on my router.
Any hints/tips would be greatly appreciated.
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