The Cat 3550 doesn't support NAT. As a reference for you, I found the following list of unsupported Cat 3550 commands on Cisco's website:
Network Address Translation (NAT) commands Unsupported User EXEC Commands clear ip nat translation show ip nat statistics show ip nat translations Unsupported Global Configuration Commands ip nat inside destination ip nat inside source ip nat outside source ip nat pool Unsupported Interface Configuration Commands ip nat Also, just to confirm, I checked the Cisco Feature Navigator - no support (for the 3560 too). As for an alternative solution to your Internet sharing issue, I think you might be out of luck... -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of nicholas golden Sent: Friday, October 30, 2009 8:55 AM To: [email protected] Subject: [OSL | CCIE_RS] Stupid question - maybe yes, maybe no 3550. OK so the noob here has a silly question. I have a 3550 I want to hook my pc up to it and hook the 3550 to my cable modem and then of course the internet. I know how to do it with nat, all that good stuff with my rack of routers but I am just messing around and seeing If I can do it on the 3550 with a single host going through the switch to the cable modem to the internet. Well, I can't do IP nat, inside or outside soooooooooo is there an alternative on the 3550, or do I need a higher IOS code? Maybe some trickery to some kind of manual nat or list or trick or something? Tried googling it and not coming up with a whole lot :) I have: Cisco IOS Software, C3550 Software (C3550-IPSERVICESK9-M), Version 12.2(25)SEC2, RELEASE SOFTWARE (fc1) So if I seem silly - slap me please 8)- -Nick _______________________________________________ For more information regarding industry leading CCIE Lab training, please visit www.ipexpert.com
