Allied Telesis AT-WA7501, AT-WA7500 manual Using Dual Radio Access Points for Redundancy

Using Dual Radio

Access Points for

Redundancy

AT-WA7500 and AT-WA7501 Installation and User’s Guide

You can configure AT-WA7500 units and AT-WA7501 units that have two 802.11g radios, two 802.11b radios, or two 802.11a radios to provide redundancy for your network.

During normal operations, end devices send frames to the master radio in one of the access points, which bridges the frames to the wired network. If a section of the wired network goes down, the master radio receives the frames, and then the station radio forwards the frames to a master radio in another access point that is within range.

In each access point, you need to configure one radio’s node type as a Master, which communicates with the wireless end devices, and configure the other radio’s node type as a Station, which communicates to another access point with a master radio and within range.

In this example, AP3 is a dual radio access point. It may be located on a loading dock or other remote location. During normal operations, AP3 functions as a normal access point, transmitting frames to and from the host. However, if the Ethernet connection is disrupted, AP3 can function as a WAP and continue operations by transmitting frames to a master radio in AP1. AP3 must be within range of AP1.

Host

AP1 AP3

Ethernet

Figure 16. Dual Radio Access Points

To install dual radio access points for redundancy

ˆFollow the instructions for installing a simple wireless network with a WAP on page 25.

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