Cisco Cisco Access Registrar 4.2 Specifikace stáhnout pdf (Strana 104)

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Cisco Wireless LAN Controller Configuration Guide

OL-13826-01

Chapter 4 Configuring Controller SettingsWireless Device Access

Managing the System Time and Date

Step 24 Enter the code for the country in which the network is located. Enter help to view the list of available

country codes.

Note You can enter more than one country code if you want to manage access points in multiple

countries from a single controller. To do so, separate the country codes with a comma (for

example, US,CA,MX). After the configuration wizard runs, you need to assign each access point

joined to the controller to a specific country. See the “Configuring 802.11 Bands” section on

page 4-8 for instructions.

Step 25 When you run the wizard on a wireless controller network module installed in a Cisco Integrated

Services Router, the wizard prompts you for NTP server settings. The controller network module does

not have a battery and cannot save a time setting. It must receive a time setting from an external NTP

server when it powers up.

Step 26 Enable or disable support for each of the 802.11b, 802.11a, and 802.11g lightweight access point

networks by entering yes or no.

Step 27 Enable or disable the radio resource management (RRM) auto-RF feature by entering yes or no. Refer

to Chapter 10 for more information on RRM.

Note The auto RF feature enables the controller to automatically form an RF group with other

controllers. The group dynamically elects a leader to optimize RRM parameter settings, such as

channel and transmit power assignment, for the group.

The controller saves your configuration, reboots, and prompts you to log in or to enter recover-config

to reset to the factory default configuration and return to the wizard.

Managing the System Time and Date

You can configure the controller to obtain the time and date from a Network Time Protocol (NTP) server,

or you can configure the time and date manually. Greenwich Mean Time (GMT) is used as the standard

for setting the time zone on the controller.

Note Daylight Savings Time (DST) is not supported in controller software release 4.2.

Configuring an NTP Server to Obtain the Time and Date

Each NTP server IP address is added to the controller database. Each controller searches for an NTP

server and obtains the current time upon reboot and at each user-defined polling interval (daily to

weekly).

Use the commands to configure an NTP server to obtain the time and date.

1. To specify the NTP server for the controller, enter this command:

config time ntp server index ip_address

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