Encrypting a MAN connection using 3750's with the service module using MACsec

[Jay Girlardo]

So we have two sites and we are trying to encrypt our MAN connection between the sites. We have 3750's with the C3KX-SM-10G module that allows for MACsec. The only issue is the switches within the carriers network.
Has anyone tried this before or know if it's possible.

[cedar_lee]

Yes, we have MACsec working with C3750X and C3KX-SM-10G between two cities.

But not sure what the carrier uses. We were informed they use optical service. We tested it and confirmed the MTU is over 9000.

You might want to talk to your carrier. They should be able to tell you if they can provide the circuit to support MACsec or not.

Cedar