I've a got 2960G switch with a GLC-GE-100FX SPF module connected to another cisco switch. In the 2960G port configuration setting I'm unable to force the port to communicate in Full Duplex, but rather it always reverts to auto; however, in port status it indicates that the port is in Half Duplex. My other switch can be easily changed between full and half duplex. My goal is to have both switches in full duplex.