MC220L + SFP -GE-0310 & Cisco 4331 Gi porth problem

[Yasen]

Model :

Hardware Version :

Firmware Version :

ISP : [/COLOR]

All diode are green and normal, but ping is - !!!!!.!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!.!!!!!! !!!!!!!!.!!!!!!!!!!! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!! and this is 64 baits, with 1500 - !!!!!!!!!!!!!!.!.!!!!!!!!!!!!!!!!!!!!!!!!!.!!!!!!! !!!!!!!!!!!!!!!!!!!!
!!!!.!!!!!!!!!!!!!!!!!!!!!!!!!
On cisco router interfaces - 204 lost carrier

[sunshinedxd]

Do you mean that all the LEDs on the MC220L are on? What is the LED status on the Cisco switch?

And as I know, some vendors may limit their Fiber products to work only with their own. So you may need to contact the Cisco Support to see if there are such limitations.