Network switches provide more bandwidth to each target device and are very common in networks with large groups of users. The use of Provisioning Services in the network may require changes to switch configurations. When planning an implementation, give special consideration to managed switches.
Managed switches usually offer loop detection software. This software turns off a port until the switch is certain the new connection does not create a loop in the network. While important and useful, the delay this causes prevents your target devices from successfully performing a PXE boot.
To avoid this problem, you must disable the loop detection function on the ports to which your target devices are connected. To do this, specify all ports to which target devices are connected as edge-ports. This has the same effect as enabling the fast link feature in older switches (disables loop detection).