Which module can adding for catalyst 4006

[hungnm]

My network will upgrade backbone use 100 base single mode fiber optic,at present we'd been used catalyst 4006,and catalyst 2950.Could you tell me which module I need to install for two catalysts.

(At present, two catalysts onlu use 10/100 (RJ 45) module.

Thank you very much.

[vmiller]

you will need a fiber to copper converter.THere are quite a few available on the web.

Unless of course you want to do a hardware upgrade.