RE: NAT inside outside on same interface

From: Dragan Dincic - Dine (dinelists@swiftkenya.com)
Date: Thu Feb 08 2001 - 16:43:39 EST


using mentioned method I get :

"Configuring IP routing on a LAN subinterface is only allowed if that
subinterface is already configured as part of an IEEE 802.10 or ISL vLAN."

this is on: CISCO 4500
IOS (tm) 4000 Software (XX-D-M), Version 11.1(5), RELEASE SOFTWARE (fc1)

regards,
Dine

-----Original Message-----
From: Keith McCallion [mailto:keith@mccallion.com]
Sent: Friday, February 09, 2001 00:35
To: Martin Picard
Cc: cisco-nsp@puck.nether.net
Subject: Re: NAT inside outside on same interface

On Thu, 8 Feb 2001, Martin Picard wrote:

> I can vaguely recall that there was a thread on trying
> to NAT inside and outside on the same interface...
> but can't find it back....any pointer ?

Use subinterfaces. ie:

int FastEther1/0/0
  no ip address
int FastEther1/0/0.1
  ip address 1.1.1.1 255.255.255.0
  ip nat inside
int FastEther1/0/0.2
  ip address 2.2.2.2 255.255.255.0
  ip nat outside

and that should work for you.

-Keith



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