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Configuring the IEEE 802.11b Radio

116

Configuring Point-to-Point Bridges

In your environment, you may have point-to-point bridges, which send

data from wireless end devices on a secondary LAN to a primary LAN.

This data is sent via a wireless hop. Wireless hops are formed when data

from wireless end devices move from one access point to another access

point through the radio ports.

Figure 42 illustrates a point-to-point bridge configuration.

Figure 42 Point-to-Point Bridging

Note

Before you can create wireless hops, the radios in the access points

must be communicating with each other.

To create wireless hops, one radio in the point-to-point bridge on the

primary LAN must be configured as a master and one radio in the bridge

on the secondary LAN must be configured as a station. The master on

the primary LAN must have the Wireless Hops parameter enabled so that

it honors connections from stations. The master transmits hello packets,

which allow the bridge on the secondary LAN to attach to the spanning

tree in the same way that wired access points do.

You need to set the root priority of the master to a number that is

greater than the root priority of the station. The devices will not form a

point-to-point bridge if the master has a lower root priority than the

station. On the master, you should also set the Secondary LAN Bridge

Priority parameter to 0 and the Secondary LAN Flooding parameter to

disabled. On the station, you should set bridge priority parameter to a

number other than 0 and the flooding parameter to enabled.

Host

21XXT013.eps

Ethernet Ethernet

Host

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