CAN YOU NAT on a CISCO 3550 switch using a VLAN Interface?

I am configuring a cisco 3550 switch with several vlans for my network. I would like to nat 1 of the fa ports to a different subnet since that port will host a connection to a trusted trading partner. Since that trading partner has the same subnet addressing scheme as I do, I need to nat to a different address group. I don't want to re-address my internal hosts so I am back to natting. Is this possible or do I have to insert a router in between?

My plan was to set up a vlan with and assign it to the interface that will be servicing the connection and then set up natting on that VLAN interface with several static nats.
Who is Participating?

[Product update] Infrastructure Analysis Tool is now available with Business Accounts.Learn More

I wear a lot of hats...

"The solutions and answers provided on Experts Exchange have been extremely helpful to me over the last few years. I wear a lot of hats - Developer, Database Administrator, Help Desk, etc., so I know a lot of things but not a lot about one thing. Experts Exchange gives me answers from people who do know a lot about one thing, in a easy to use platform." -Todd S.

NAT is listed as unsupported in the 3550 documentation:

And the NAT support matrix
Catalyst 3550   Not currently supported.

Perhaps a firewall instead of a router? Little PIX 506e or something?


Experts Exchange Solution brought to you by

Your issues matter to us.

Facing a tech roadblock? Get the help and guidance you need from experienced professionals who care. Ask your question anytime, anywhere, with no hassle.

Start your 7-day free trial
ljucasAuthor Commented:
Thanks, that was what I was afraid the answer would be since the nat commands were not being accepted on the switch. Interesting that Cisco Level 3 support is telling me that it is supported, even after I pressed him to be sure.

Thanks for your insight!
It's more than this solution.Get answers and train to solve all your tech problems - anytime, anywhere.Try it for free Edge Out The Competitionfor your dream job with proven skills and certifications.Get started today Stand Outas the employee with proven skills.Start learning today for free Move Your Career Forwardwith certification training in the latest technologies.Start your trial today

From novice to tech pro — start learning today.