Allied Telesis TQ5403, Installation Manual, Page: 27 / 82

TQ5403 and TQm5403 Wireless Access Points Installation Guide
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LAN1 and LAN2 Ports
The wireless access point has two Ethernet ports, labeled LAN1 and
LAN2. The wireless clients communicate with your wired network through
these ports. You need to connect them to a device on your network, such
as an Ethernet switch or router.
You can connect either one or both LAN ports to your network. The
benefits of using both LAN ports are listed here:

You double the bandwidth between the wireless access point and
your wired network, improving wireless network performance.
 You add cable redundancy between the access point and the
wired network. If the link on one of the LAN ports is lost, the
wireless access point and wired network can continue to
communicate through the remaining link on the other LAN port.
The default setting for the LAN1 port is enabled. You cannot disable it. The
default setting for the LAN2 port is disabled. Activating it requires enabling
the static link aggregation feature, as explained in the next section.
Static Link
Aggregation
To use the LAN2 port, you have to activate static link aggregation (LAG)
on the wireless access point. The feature combines the two LAN ports into
a single logical link between the wireless access point and the network
device to which the ports are connected. Without the feature, the two ports
would form a loop in your network topology, which could result in reduced
network performance. After you activate the feature, the wireless access
point activates the LAN2 port and forms the static LAG of the two LAN
ports. It then uses both ports to transmit network traffic to and receive
network traffic from your wired network.
Here are guidelines to using both LAN1 and LAN2 ports:
 You have to connect them to the same network device, such as an
Ethernet switch or router, or virtual stacking devices. Do not
connect the LAN ports to different network devices.
 The network device has to support static LAGs.
 You have to configure the two ports on the network device to which
the LAN ports are connected as a static LAG.

The default setting for static LAG and LAN2 port on the wireless
access point is disabled. You enable them with the on-board web
browser management interface.
Note
Do not enable the LAN2 port until you have configured the other
network device for the static LAG.