Cisco SD2008T-NA Configuration Manual page 89

Chapter 3 Configuring Ports and Interfaces
AP-manager interfaces need not be on the same VLAN or IP subnet, and they may or may not be on the
Note
same VLAN or IP subnet as the management interface. However, Cisco recommends that you configure
all AP-manager interfaces on the same VLAN or IP subnet.
Note You must assign an AP-manager interface to each port on the controller.
Before an access point joins a controller, it sends out a discovery request. From the discovery response
that it receives, the access point can tell the number of AP-manager interfaces on the controller and the
number of access points on each AP-manager interface. The access point generally joins the AP-manager
with the least number of access points. In this way, the access point load is dynamically distributed
across the multiple AP-manager interfaces.
Access points may not be distributed completely evenly across all of the AP-manager interfaces, but a
Note
certain level of load balancing occurs.
Figure 3-14
Before implementing multiple AP-manager interfaces, you should consider how they would impact your
controller's port redundancy.
Examples:
The 4402-50 controller supports a maximum of 50 access points and has two ports. To support the
1.
maximum number of access points, you would need to create two AP-manager interfaces (see
Figure
OL-9141-03
Two AP-Manager Interfaces
3-14) because a controller can support only 48 access points on one port.
Configuring a 4400 Series Controller to Support More Than 48 Access Points
Cisco Wireless LAN Controller Configuration Guide
3-37