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NAT on a switch?

can you actually run nat on a switch? if not then why are the ip nat commands that you would typically see on a router on a switch. also can you run nat just on specific ports?

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Bronze

Re: NAT on a switch?

NAT is a layer 3 service (or pratically a router function)

so it will not work on 'Layer 2 only' switches.

It should work on switches with Layer 3 capabilities.

However, I believe there are some Catalyst switches

with L3 features that doesn't support NAT (e.g., Catalyst 3550).

When you mentioned 'ports', I assume its the catalyst switch ports.

As mentioned above, the port should be in L3 mode to support NAT.

You can use NAT on at least two ports (inside and outside).

With Catalyst 6000 running native IOS, if the ports are configured for L3,

it will just be like a router with many interfaces.

Hope this helps.

Community Member

Re: NAT on a switch?

thanks

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