we have just purchased a few 3750x's that we intend to add to our 3750g stacks. We've purchased the 10gb uplink modules, C3kx-nm-10gt, but when they are installed they are not appearing in the switches web gui nor can you configure them correctly. If we upgrade a 3750x to 15.0.1 they seem to work fine. All of our current 3750g's are running 12.2(58)SE2 IPBASE so we don't really want to have to upgrade them all to 15.0.1
Are we missing something or do the 10gb modules only work properly with ios 15.0.1?
Do you see this interfaces in "show int" command output? And did you try to reload the switch?
I checked minimum software requirement and this modules are supported starting with 15.0(1)SE, so those won't work with 12.2(58)SE2:
**Please grade this post if you find it useful.