NETGEAR ProSafe WC7520 Reference Manual page 32

ProSafe 20-AP Wireless Controller WC7520
Figure 10.
The wireless controller uses the management VLAN to continually exchange packets with the
access points. For large networks, if all traffic uses a single VLAN, the client traffic could
potentially flood the network. If this happens, and the wireless controller is not able to
exchange packets with the access points, it can cause network performance to slow down,
and the access points can lose their connectivity with the wireless controller.
You should deploy the wireless controller on a trunk port on your switch. The trunk port
should have access to all VLANs. Use a high-speed port on your switch as the trunk port to
accommodate the traffic load of the trunk.
System Planning and Deployment Scenarios
32