Примечания к выпуску для Cisco Cisco 2106 Wireless LAN Controller
6
Release Notes for Cisco Wireless LAN Controllers and Lightweight Access Points for Release 4.0.219.0
OL-31336-01
Important Notes
5.
When installing an antenna, remember:
a.
Do not use a metal ladder.
b.
Do not work on a wet or windy day.
c.
Do dress properly—shoes with rubber soles and heels, rubber gloves, long-sleeved shirt or
jacket.
jacket.
6.
If the assembly starts to drop, get away from it and let it fall. Remember that the antenna, mast,
cable, and metal guy wires are all excellent conductors of electrical current. Even the slightest touch
of any of these parts to a power line completes an electrical path through the antenna and the
installer: you!
cable, and metal guy wires are all excellent conductors of electrical current. Even the slightest touch
of any of these parts to a power line completes an electrical path through the antenna and the
installer: you!
7.
If any part of an antenna system should come in contact with a power line, do not touch it or try
to remove it yourself. Call your local power company. They will remove it safely.
to remove it yourself. Call your local power company. They will remove it safely.
8.
If an accident should occur with the power lines, call for qualified emergency help immediately.
Installation Instructions
Refer to the appropriate quick start guide or hardware installation guide for instructions on installing
controllers and access points.
controllers and access points.
Note
To meet regulatory restrictions, all external antenna configurations must be professionally installed.
Personnel installing the controllers and access points must understand wireless techniques and
grounding methods. Access points with internal antennas can be installed by an experienced IT
professional.
grounding methods. Access points with internal antennas can be installed by an experienced IT
professional.
The controller must be installed by a network administrator or qualified IT professional, and the proper
country code must be selected. Following installation, access to the controller should be password
protected by the installer to maintain compliance with regulatory requirements and ensure proper unit
functionality.
country code must be selected. Following installation, access to the controller should be password
protected by the installer to maintain compliance with regulatory requirements and ensure proper unit
functionality.
Important Notes
This section describes important information about the controllers and access points.
Dynamic Frequency Selection Added to Access Points in -A Regulatory Domain
In controller software release 4.0.219.0, dynamic frequency selection (DFS) is enabled automatically on
the following Cisco lightweight access points that are configured for use in the -A regulatory domain
(U.S., Canada, and Philippines): AP1130, AP1230, and AP1240. DFS affects channels 52 to 64 of the
802.11a radio. The access points use DFS to detect radar signals such as military and weather sources
and then switch channels to avoid interfering with them.
the following Cisco lightweight access points that are configured for use in the -A regulatory domain
(U.S., Canada, and Philippines): AP1130, AP1230, and AP1240. DFS affects channels 52 to 64 of the
802.11a radio. The access points use DFS to detect radar signals such as military and weather sources
and then switch channels to avoid interfering with them.