I'm trying to configure NAT on a Stick using a Cisco 881 router using Cisco Configuration Professional. Based on the Cisco document "Netwrok Address Translation on a Stick" (Document ID:6505) I run into some questions.
1) The document states to use the Cisco Feature Navigator II to determine which IOS version I could use with this feature. But I have no idea what feature exactly I have to look for in the Cisco Feature Navigator. Could anybody please help me with this? Right now I'm using Version 12.4(24)T3.
2) As I mentioned above, I'm trying to use Cisco Configuration Professional (version 2.2). As stated in the document I created an Loopback interface. Following the document I should now designate the loopback interface as inside NAT interface. However, trying to do this fails, because it is not possible to configure the loopback interface. Instead of showing the select box with options inside/outside/<none> (as it is e.g. on VLAN interfaces) the selct box is greyed out and states <NOT-SUPPORTES>. Does anybody know why? Is this because I'm using a wrong IOS version, is it a bug in Cisco Configuration Professional or something else I'm missing?
Thnaks for your help.