I apologize if this is the wrong area to ask this question.
Background: I currently have a UC520 connected to 4 8-port CE520, with each CE520 switch on a different port. Each of these switches are in differnt locations in my office. Everything works no issues.
Problem : I recently had to move one of the switches to be in the same location as another one, however due to wiring constraint i was hoping to daisy chain the new switch off the existing switch. However everytime i plug the switch into the existing switch it errors and disables the port.
The error i am getting is
This port is disabled because an unexpected Bridge Protocol Data Unit (BPDU) is received from the connected device.
I am still a little new with regards to networking, I have tried changing the port speed, port types and using crossover cables but nothing seems to work. I have to keep resetting both devices to allow the ports to be enabled. I have also tried using the WAN port rather than the LAN port, but it seems that the moment the new switch see the network the old switch shuts the port down.
Can someone confirm whether it is possible to connect two ce520s together or whether i am doing it incorrectly.