I am not sure whether the fibre modules of the D-Link switch (using SC-type connectors) will communicate with a Cisco switch using fibre GBICs. The fibre is MM and both switches are using SC-type ...

Is there a way to interrogate a SFP in a Cisco switch (2950, 3750, etc) in order to glean info about fiber quality? Noise, signal loss.. my company is too cheap to buy a real fiber tester.