Group, I am having an issue with activating a Gige interface between a Cisco 7206 VXR w/IO-1GE module to a 7606 w/sup720-3bxls connecting to a line module WS-X6416-GBIC. I have verified that the GBIC-MMF have good light reading and the MMF fiber jumper are not reversed. The GigE connection comes up briefly for about a few seconds, takes a burst of errors and goes down. I have tried to set the speed to nonegotiate on both ends, set one end to speed auto. No dice. Here is the copy of the configuration. On my 7606 I show that the GigE interface is up/up but on the 7206vxr I show down/down. Any help will be greatly appreciated. Thanks! This is the Cisco 7206VXR configuration. interface GIabitEthernet0/0 no ip address duplex full speed 1000 media-type gbic no negotiation auto This is the Cisco 7606 configuration. interface GigabitEthernet1/8 description AR4-DLLSTXHW-GE0/0 no ip address speed nonegotiate Michael Ruiz Network Engineer