Cisco Aironet 1850 Series - Page 56

Step 2
Enable LAG mode on the individual AP 1850 using the command:
config ap lag-mode support <ap-name> enable
To disable the LAG on the AP, use the command:
config ap lag-mode support <ap-name> disable
APs that support LAG will reset and will reboot only if the LAG state is toggled between enable and disable.Note
Step 3
For optimal traffic load balancing on the LAG ports to the AP and the controller, it is important that the switch support
balancing is based purely on the L4 source and destination ports.
A sample configuration on the Cisco 3850 switch is shown below, where the AP 1850 is connected to G6/0/13 and G6/0/3
on the wired0(plink) and wired1 (Aux port) respectively.
conf t
port-channel load-balance src-dst-port
interface Port-channel1
description To AP-1850
switchport access vlan 192
switchport mode access
interface GigabitEthernet6/0/3
switchport access vlan 192
switchport mode access
channel-group 1 mode active
interface GigabitEthernet6/0/13
switchport access vlan 192
switchport mode access
channel-group 1 mode active
end
Step 4
The state of the LAG configuration on the controller and AP can be seen using the following commands on the controller:
show ap lag-mode
show ap config general <ap-name>
The successful formation of LAG between AP and the switch can be seen using the following commands on the switch:
show lacp neighbors
show lacp internal
Downstream Device connection for the AP 1850
The AUX port is designed to function as a downstream port. The AUX port is ideal for devices such as video cameras, projectors,
IP Phones, Point of Sale terminals, and other end point devices. Also, it is designed to perform port Link Aggregation (LAG).
Additionally, this AUX port will be disabled if the AP is powered by a limited 15.4 W .3af PoE source because it requires PoE+,
.3at, or local power (wall brick type power supply) to properly function.
The AUX port is not manageable and is simply bridged back to the controller. Avoid connecting another
AP to this port or devices such as switches/hubs or the same switch or uplink as the PoE port because it
can create spanning tree loop issues.
Note
For example, if you configure the switch port (to AP 1850) as access in VLAN 5, then the traffic comes from the AUX port.
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