Configuring A 4400 Series Controller To Support More Than 48 Access Points; Using Link Aggregation; Using Multiple Ap-Manager Interfaces - Cisco SD2008T-NA Configuration Manual

Configuring a 4400 Series Controller to Support More Than 48 Access Points

Configuring a 4400 Series Controller to Support More Than 48
Access Points
As noted earlier, 4400 series controllers can support up to 48 access points per port. When the limit is
reached and another access point tries to register with the controller, the following error message is
generated:
However, you can configure your 4400 series controller to support more access points using one of the
following methods:
•
•
•
Follow the instructions on the page indicated for the method you want to use.
The following factors should help you decide which method to use if your controller is set for Layer 3
operation:
•
•

Using Link Aggregation

See the
enabling link aggregation.
Link aggregation is the only method that can be used for the Cisco WiSM and Catalyst 3750G Integrated
Note
Wireless LAN Controller Switch controllers.

Using Multiple AP-Manager Interfaces

This method can be used only with Cisco 4400 series stand-alone controllers.
Note
When you create two or more AP-manager interfaces, each one is mapped to a different port (see
Figure
port 2, AP-manager interface 3 is on port 3, and AP-manager interface 4 is on port 4.
Cisco Wireless LAN Controller Configuration Guide
3-36
Error: AP cannot join because the maximum number of APs on interface 1 is reached.
Link aggregation (for controllers in Layer 3 mode), see
Multiple AP-manager interfaces (for controllers in Layer 3 mode). A single AP manager interface
supports upto 48 access points, but multiple AP manager interfaces allows more than 48 access
points to be registered with the controller. See
Connecting additional ports (for controllers in Layer 2 mode), see
With link aggregation, all of the controller ports need to connect to the same neighbor switch. If the
neighbor switch goes down, the controller loses connectivity.
With multiple AP-manager interfaces, you can connect your ports to different neighbor devices. If
one of the neighbor switches goes down, the controller still has connectivity. However, using
multiple AP-manager interfaces presents certain challenges (as discussed in the
AP-Manager Interfaces" section below) when port redundancy is a concern.
"Enabling Link Aggregation" section on page 3-29
3-14). The ports should be configured in sequential order such that AP-manager interface 2 is on
Chapter 3 Configuring Ports and Interfaces
page 3-36.
page 3-36.
page 3-41.
for more information and instructions on
"Using Multiple
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