[cisco-bba] 7204vxr - IP NAT multiple inside global

Vaibhav Bagaria vaibhav.bagaria at bendigotelco.com.au
Thu May 22 18:56:46 EDT 2014

Hi Nathan,

This link should help you with using pools for a range of public IPs.


I have had thousands of sessions terminate on 7201s before but it didn't include NAT and the total throughput was under 500M.

Hope that help.


From: cisco-bba [mailto:cisco-bba-bounces at puck.nether.net] On Behalf Of Mr Nathan Downes
Sent: Thursday, 22 May 2014 9:55 PM
To: cisco-bba at puck.nether.net
Subject: [cisco-bba] 7204vxr - IP NAT multiple inside global

Hi guys,

I have the following config for NAT translations using the 7204 to terminate a small number of PPPOE sessions and expecting it to double over next month or so..  Most just get a public IP and don't do NAT but some I allocate an address to go through NAT.

interface GigabitEthernet0/2
description Interface for Internet Access
ip address x.x.x.x
ip nat outside
ip virtual-reassembly in
duplex auto
speed auto
media-type rj45
negotiation auto

ip nat inside source list 100 interface GigabitEthernet0/2 overload

access-list 100 remark IP list allowed to NAT
access-list 100 permit ip any

I want to be able to use a larger range of IPs for the inside global but my google fu and understanding is failing me..  say I wanted to allocate..  how would I do that?

I also have an NPE-G2 in it, what would be a reasonable number of sessions for it to be able to terminate?


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