Cisco Systems 3.2 manual Using the CLI to Enable Link Aggregation

Chapter 3 Configuring Ports and Interfaces

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

Using the CLI to Enable Link Aggregation

Follow these steps to enable LAG on your controller using the CLI.

Step 1 Enter config lag enable to enable LAG.

Note Enter config lag disable if you want to disable LAG.

Step 2 Enter show lag to verify that your change has been saved.

Step 3 Reboot the controller.

Configuring Neighbor Devices to Support LAG

The controller’s neighbor devices must also be properly configured to support LAG.

•Each neighbor port to which the controller is connected should be configured as follows:

interface GigabitEthernet <interface id> switchport

channel-group <id> mode on no shutdown

•The port channel on the neighbor switch should be configured as follows:

interface port-channel <id> switchport

switchport trunk encapsulation dot1q switchport trunk native vlan <native vlan id> switchport trunk allowed vlan <allowed vlans> switchport mode trunk

no shutdown

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. However, you can configure your 4400 series controller to support more access points using one of the following methods:

•Link aggregation (for controllers in Layer 3 mode), page 3-31

•Multiple AP-manager interfaces (for controllers in Layer 3 mode), page 3-31

•Connecting additional ports (for controllers in Layer 2 mode), page 3-36Follow the instructions on the page indicated for the method you want to use.

Cisco Wireless LAN Controller Configuration Guide

3-30 OL-8335-02