Cisco Cisco 2106 Wireless LAN Controller
13
Release Notes for Cisco Wireless LAN Controllers and Lightweight Access Points for Release 4.1.171.0
OL-12979-01
Installation Notes
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RM channel selection—You can now specify the channels that the dynamic channel allocation
(DCA) algorithm considers when selecting the channels to be used for RRM scanning using the
controller GUI. Previously, you could configure this feature only through the controller CLI.
(DCA) algorithm considers when selecting the channels to be used for RRM scanning using the
controller GUI. Previously, you could configure this feature only through the controller CLI.
Other Changes
These additional changes are applicable to controller software release 4.1.171.0:
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The Airespace AS1200 is not supported for use with controller software release 4.1.171.0. The
Airespace AS1200 (not to be confused with the Cisco Aironet AP1200) was never sold by Cisco and
predates Cisco’s acquisition of Airespace. If you attempt to connect an Airespace AS1200 to a
controller running this software, the access point reboots continuously.
Airespace AS1200 (not to be confused with the Cisco Aironet AP1200) was never sold by Cisco and
predates Cisco’s acquisition of Airespace. If you attempt to connect an Airespace AS1200 to a
controller running this software, the access point reboots continuously.
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There is no deployment restriction on the number of hybrid-REAP access points per location.
However, the minimum bandwidth restriction remains 128 kbps with the roundtrip latency no
greater than 100 ms and the maximum transmission unit (MTU) no smaller than 500 bytes.
However, the minimum bandwidth restriction remains 128 kbps with the roundtrip latency no
greater than 100 ms and the maximum transmission unit (MTU) no smaller than 500 bytes.
Installation Notes
This section contains important information to keep in mind when installing controllers and access
points.
points.
Warnings
Warning
This warning means danger. You are in a situation that could cause bodily injury. Before you work on
any equipment, be aware of the hazards involved with electrical circuitry and be familiar with
standard practices for preventing accidents.
any equipment, be aware of the hazards involved with electrical circuitry and be familiar with
standard practices for preventing accidents.
Warning
Only trained and qualified personnel should be allowed to install, replace, or service this equipment.
Warning
Do not locate any antenna near overhead power lines or other electric light or power circuits, or
where it can come into contact with such circuits. When installing antennas, take extreme care not
to come in contact with such circuits, as they may cause serious injury or death. For proper
installation and grounding of the antenna, refer to national and local codes (e.g. U.S.: NFPA70,
National Electrical Code, Article 810, in Canada: Canadian Electrical Code, Section 54).
where it can come into contact with such circuits. When installing antennas, take extreme care not
to come in contact with such circuits, as they may cause serious injury or death. For proper
installation and grounding of the antenna, refer to national and local codes (e.g. U.S.: NFPA70,
National Electrical Code, Article 810, in Canada: Canadian Electrical Code, Section 54).
Warning
This product relies on the building’s installation for short-circuit (overcurrent) protection. Ensure that
the protective device is rated not greater than: 120 VAC, 15A U.S. (240vac, 10A International)
the protective device is rated not greater than: 120 VAC, 15A U.S. (240vac, 10A International)
Warning
This equipment must be grounded. Never defeat the ground conductor or operate the equipment in the
absence of a suitably installed ground connector. Contact the appropriate electrical inspection
authority or an electrician if you are uncertain that suitable grounding is available.
absence of a suitably installed ground connector. Contact the appropriate electrical inspection
authority or an electrician if you are uncertain that suitable grounding is available.