i have a 5 stack switch connecting via stack cables in the data center. i want to add a 6th switch to the stack running from our IDF closet using a fiber connection. the stack doesn't seem to see the additional switch. how can i add this?
You cannot stack using a fiber connection , the only way you can stack a 3750 is using a stack cable in the back, what you have effectively done is make that other switch a standalone switch. No way around the stack cables if you want it to be part of a stack. If the switch is in a different closet then stacking that switch is not an option.