For the life of me, I cannot get a fiber connection to work between a Catalyst 2960G with SFP ports, and the 3548XL gigabit ports...what am I missing?
I thought the fiber might be the problem, as I was originally using Single-mode. But I tried Multi-mode as well and still no luck.
Both ports are "no shut", and a Show Int on both shows that they recognize the gigabit modules.
The 2960G is going to be the "core" switch that the 3548XL's use.
Let me know if you need more information from me.