Intermec MobileLAN 21 Series System Manual page 151

Note: If you are using a 902 MHz access point, it only needs one 902 MHz radio. This
radio can simultaneously be a master and a station. It will create wireless hops
automatically when it cannot communicate to the wired network.
You need to set the root priority of the master radio to a number that is greater than the
root priority of the station radio. The devices will not form a point-to-point bridge if the
master radio has a lower root priority than the station radio. On the master radio, you
should also set the Secondary LAN Bridge Priority parameter to 0 and the Secondary
LAN Flooding parameter to disabled. On the station radio, you should set bridge
priority parameter to a number other than 0 and the flooding parameter to enabled.
You may also need to adjust the flooding parameters. Follow these recommendations
when configuring the flooding parameters for a point-to-point bridge:
•
If there are no wireless end devices on the secondary LAN, the access point on the
secondary LAN can use the default flooding settings.
•
If there are wireless end devices on the secondary LAN, the access point on the
secondary LAN should have its Secondary LAN Flooding parameter enabled. Also,
the Secondary LAN Bridge Priority parameter must be non-zero.
•
If there are wireless end devices on the secondary LAN and the end devices
communicate with end devices on another secondary LAN, the root access point
should have its Multicast Flood Mode parameter set to Universal.
To configure the master radio (in the point-to-point bridge on the primary LAN)
1. From the main menu, click the link corresponding to the radio that you are
configuring.
2. Click Wireless Bridging. The Wireless Bridging screen appears.
3. Click the down arrow on the right side of the Node Type field and choose Master
and then click Submit Changes. Your changes are saved and the Wireless Hops
parameter appears.
4. Click the down arrow on the right side of the Wireless Hops field and choose
Enabled and then click Submit Changes. Your changes are saved and the Hello
Period parameter appears.
5. Click the down arrow on the right side of the Hello Period field and choose a hello
period of 1, 2, or 3 seconds and then click Submit Changes. Your changes are
saved.
6. From the main menu, click Spanning Tree Settings. The Spanning Tree Settings
screen appears.
7. In the Root Priority field, enter a number other than 0.
8. In the Secondary LAN Bridge Priority field, enter 0.
Configuring the Radios
5
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