Choosing of port for new translation entry in case of NAT (PAT)

[keviv22]

Hi

Can anybody please halp on this.

In case of port address translation cisco seems to be statring the inside local/global translated port from 1025 onwards, but why does it retains the translated port number even after clearing the nat translation by using "clear ip nat translation *" command, and takes next port to create translation entry (even if you initiate the connection from same ip).

Any help is highly appreciated.

Thanx in advance

[k.poplitz]

The port is tabled separately in memory. To clear NAT overflow translations, you’ll have to reboot the router. Port assignments will be any port needed >1024. You cannot specify which ports it uses.

[keviv22]

Thanks poplitz for help, but I have seen this, even though I reboot the cisco it retains the port number, I am using Cisco3660, ios 12.1(3)T.

Any specific reason to retain the port number ??

Thanx in advance