On a new install of a WS-C2960S-48TS-L. The switch has 4 SFP ports. I have other Cisco switches with the same SFP port module this one has and am fimiliar with them. The documentation claims I am using the correct SFP module.
I installed a new GLC-SX-MM module in one of the ports and connected it to a SFP port on my WS-C2960G-24TC-L. Here is what happens:
C2960S (new) - Gi1/0/50 1000 BaseSX SFP Status: Port is disabled.
C2960G (existing) - Gi0/23 1000 Base SX SFP Status: Link up Speed 1000 mbps Duplex Full.
I can't find any way to get it to work. I have disabled and enabled the port without luck. I have used different SFP modules in different ports. Same result.