Following is a quick layout of my network.
Blue connections are connections that work fine, I have other devices on the 5-port switch that work perfectly fine I just didn't draw them in.
On device 7, the yellow and green connections work fine (device 7 is only connected to one other device at a time, either yellow, green or red, never more than one at a time), but the red connection does not work. When the red connection is active, device 7 reports that no lan cable is detected. Yet it works just fine on the router and 5-port using the same device and the same cable. Other devices (1 through 6) work just fine on the 25-port switch, even using the same cable as device 7.
Even if I remove devices from the 25-port switch, device 7 will not work on it. I actually have 2 other devices that exhibit the same exact behavior as device 7. All three of them report that no cable is attached when plugged into the 25-port switch, but work just fine when plugged into the router directly or the 5-port switch.
Is my 25-port switch going bad or something? Makes no sense to me, I just spent the past 2 hours fiddling with my setup and I am unable to get any of the three devices to work on the 25-port switch, even though they work flawlessly on the router or 5-port switch.
Any ideas what the issue could be? If it helps, the router and 25-port switch are both gigabit, as is one of the devices that does not work on the 25-port switch. I am not sure if the 5-port is gigabit and I know the other two devices I am having issues with are only 100mbit.