I'm a desktop support engineer working with a Cisco certified manager. I value her opinion greatly when it comes to networking issues. However, I'm split on this because with my knowledge of networking (granted not as much as hers) I don't see how this particular setup would be a problem. But here goes:
Our boss asked us for a fairly cheap solution which places 6-7 client machines, 2 printers in a trailer outside of our building. The network inside the building consists of several Cisco devices such as ASA, 3750 switches, routers, etc. She asked me what my solution would be.
My solution: Run a Cat6 cable from one of the 3750 switches to the trailer and add two 8 port retail switches. The client machines and printers would connect to the switch and from there to the 3750's and our network.
She said this wouldn't work because there is no STP on the switches and if anyone were to plug in a cable both ends into the retail switch it would cause a network storm on our entire network.
My problem with this is that wouldn't the 3750's STP prevent that from happening?