Hi jacks!
You have to provide MANY further informations!!
First: (it's quite a silly question, but...) how do tou connect to cFP-2120? (Eth cable through a SWITCH, straight cable, LAN, WAN...)
Second: are you using MAX? With right driver version?
Third: what about "status" LED on cFP module?
After getting these informations, people will be able to help you in a more straightforward way!

graziano