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2.5. Deploying the DRBAP

After the settings have been configured, deploy the DRBAP to the field application environment.
Connect the DRBAP to a LAN segment through an Ethernet switch/hub.

If external high-gain directional antennas are used for LAN-to-LAN bridge interfaces, it’s difficult to
adjust alignments of the antennas when distance between the DRBAP and its peer bridge is long.

To adjust the alignments of directional antennas:

Connect each device to a computer via Ethernet.

Configure the date rate of each bridge to the lowest value, 1Mbps.

Fix the alignment of the antenna on one side.

4. Adjust the alignment of the other side by using response time information obtained from

PINGing (run PING.exe) the “fixed-side” computer.

Fine-tune the alignment of the antenna until you get a best response time.

6. Increase the data rate of each bridge simultaneously until a maximal workable data rate is

reached. You may not be able to use the highest data rate, 54Mbps, because of the distance and
the gain of the antennas.

Fig. 16 illustrates the idea.

DRBAP as

Bridge 1

WDS Link

Computer 1

Computer 2

Bridge 2

Adjust antenna alignment

PING (ICMP Echo Request)

ICMP Echo Reply

Fig. 16. Adjusting alignments of external directional antennas.

NOTE:

There are two antenna connectors on one side of the DRBAP, which are labeled “1” and “2”.

Connector 1 is for the WLAN 1 interface 1 and Connector 2 is for the WLAN 2 interface.

TIP:

You can make use of the Antenna Alignment Assistance feature to help you align the directional

antennas.