Cisco Cisco Aironet 350 Wireless Bridge Manual Técnica

When the bridge transmits and receives heavy traffic, sometimes you cannot start a Telnet session, and the
Telnet sessions that exist freeze or hang. However, this behavior is expected because the bridge gives top
priority to data traffic and a lower priority to Telnet traffic.

If you attempt to load software images into the bridge from both a Telnet session and console session
simultaneously, the bridge cannot detect that two images are loaded at the same time. Therefore, do not
attempt this simultaneous Image Download.

Cisco Wireless Bridges can analyze different channels to detect RFI. The Carrier Busy Test helps to view the
activity in the radio frequency (RF) spectrum. The Carrier Busy Test is available on bridges, and enables you
to view the radio spectrum.

Note: This Carrier Busy Test might fail while you run it on the non−root bridge. This test produces any result
only when it is run from the root bridge.

The Running the Carrier Busy Test section of Troubleshooting 1300 Series Autonomous Access Points and
Bridges explains the procedure of how to run a Carrier Busy Test on a 1300 Series Bridge.

The Performing a Carrier Busy Test section of 1400 Series − Configuring Radio Settings explains the CLI
configuration to perform a Carrier Busy Test on a 1400 Bridge.

The configuration of the root and non−root bridges are basically the same. Except for things such as
hostname, IP address, and radio role, if you find differences between the configurations, the differences can be
problematic. Some of the common configuration problems are:

Transmit/Receive Antenna Port SettingIf the bridge only uses a single antenna, make sure that the
antenna port setting is correct. It is usually set to the right antenna port. Do not use the diversity
setting if there is only one antenna.

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ConcatenationThe BR1310 and the BR1410 support concatenation. This Wireless Packet
Concatenation is the process of concatenating smaller packets into larger ones in order to more
efficiently use the wireless medium and to provide higher overall data throughputs on a wireless
bridge. This feature is introduced in Cisco IOS Release 12.2(11)JA. If you connect a BR1310 to a
different device, make sure to disable concatenation on the BR1310 if the other device does not
support it.

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Transmit PowerIn environments that might be subject to multipathing problems, a lower transmit
power can help.

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DistanceIf there is more than 1 km between the sites, you need to set the distance parameter on the
root bridge to allow for sufficient time for the bridges to acknowledge the frames received. If this
parameter is not set on a bridge link over 1 km, the bridges show duplicate frames.

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