D-Link DWS-4026 Product Manual - Page 443

Software User Manual 12/10/09 D-Link Unified Access System When the AP changes its channel, all associated wireless clients temporarily lose their connection to the AP and must re-associate. The re-association can take several seconds, which can affect time-sensitive traffic such as voice and video. Field Channel Plan Channel Plan Mode Channel Plan History Depth Channel Plan Interval Channel Plan Fixed Time Power Adjustment Mode Table 270: RF Channel Plan and Power Adjustment Description Each AP is dual-band capable of operating in the 2.4 GHz and 5 GHz frequencies. The 802.11a/n and 802.11b/g/n modes use different channel plans. Before you configure channel plan settings, select the mode to configure. This field indicates the channel assignment mode. The mode of channel plan assignment can be one of the following: • Fixed Time: If you select the fixed time channel plan mode, you specify the time for the channel plan and channel assignment. In this mode the plan is applied once every 24 hours at the specified time. • Manual: With the manual channel plan mode, you control and initiate the calculation and assignment of the channel plan. You must manually run the channel plan algorithm and apply the channel plan to the APs. • Interval: In the interval channel plan mode, the switch periodically calculates and applies the channel plan. You can configure the interval to be from every 6 to every 24 hours. The interval period begins when you click Submit. The channel plan history lists the channels the switch assigns each of the APs it manages after a channel plan is applied. Entries are added to the history regardless of interval, time, or channel plan mode. The number you specify in this field controls the number of iterations of the channel assignment. Note: The APs changed in previous iterations cannot be assigned new channels in the next iteration. This history prevents the same APs from being changed time after time. If you select the Interval channel plan mode, you can specify the frequency at which the channel plan calculation and assignment occurs. The interval time is in hours, and you can specify an interval that ranges between every 6 hours to every 24 hours. If you select the Fixed Time channel plan mode, you can specify the time at which the channel plan calculation and assignment occurs. The channel plan calculation will occur once every 24 hours at the time you specify. You can set the power of the AP radio frequency transmission in the AP profile, the local database or in the RADIUS server. The power level in the AP profile is the default level for the AP, and the power will not be adjusted below the value in the AP profile. The settings in the local database and RADIUS server always override power set in the profile setting. If you manually set the power, the level is fixed and the AP will not use the automatic power adjustment algorithm. You can configure the power as a percentage of maximum power, where the maximum power is the minimum of power level allowed for the channel by the regulatory domain or the hardware capability. • Manual: In this mode, you run the proposed power adjustments manually from the Manual Power Adjustments page. • Interval: In this mode, the switch periodically calculates the power adjustments and applies the power for all APs. The interval period begins when you click Submit. Note: If you set the power level in the local or RADIUS database, the settings override the power level set in the AP profile. Note: This setting gets applied to both radios of the AP. For more information about manually setting the power level, see "Radio" on page 417 and "Valid Access Point Summary" on page 436. Document 34CSFP6XXUWS-SWUM100-D7 AP Management Page 443