D-Link DWS-3000 Series User Manual page 83

Software User Manual
02/15/2011
Field
Load Balancing
Load Utilization
RF Scan Other
Channels
RF Scan Interval
RF Scan Sentry
RF Scan Sentry
Channels
Station Isolation
Rate Sets
Basic
Supported
Document 34CS3000-SWUM104-D10
Table 11: Radio Settings
Description
If you enable load balancing, you can control the amount of traffic that is allowed on the AP.
This field allows you to set a threshold for the percentage of network bandwidth utilization
allowed on the radio. Once the level you specify is reached, the AP stops accepting new client
associations.
If you specify 0 in this field, all new associations will be allowed regardless of the utilization
rate.
The access point can perform RF scans to collect information about other wireless devices
within range and then report this information to the Unified Switch.
If you select the Scan Other Channels check box, the radio periodically moves away from
the operational channel to scan other channels.
Enabling this mode causes the radio to interrupt user traffic, which may be noticeable with
voice connections. Changing the channels also causes the radio to lose auto-calibration
settings which may degrade the signal quality.
When the Scan Other Channels check box is not enabled the AP scans only the operating
channel.
This field controls the length of time between channel changes during the RF Scan.
If you select the RF Scan Sentry check box, the radio primarily performs dedicated RF
scanning. The radio passively listens for beacons and traffic exchange between clients and
other access points but does not accept connections from wireless clients. In sentry mode, all
VAPs are disabled.
In this mode, the radio switches from one channel to the next. The length of time spent on
each channel is controlled by the scan duration. The default scan duration is 10 milliseconds.
The radio can scan channels in the radio frequency used by the 802.11b/g band, the 802.11a
band, or both bands. Select the channel band for the radio to scan.
Note: The band selection applies only to radios in sentry mode.
Select the check box to enable Station Isolation, or clear it to disable station isolation.
• Enabled: Access point blocks communication between wireless clients. The access point still
allows data traffic between its wireless clients and wired devices on the network, but not
among wireless clients.
• Disabled: Wireless clients can communicate with one another normally by sending traffic
through the access point.
Note: Station Isolation is operational only for clients that transmit non-tunneled traffic. When
client traffic is tunneled, Station Isolation is not in effect for those clients even if it is enabled.
Note: Station Isolation is configured independently for each radio. You cannot configure
Station Isolation on a per-SSID or per-AP basis.
Check the transmission rate sets you want the access point to support and the basic rate sets
you want the access point to advertise.
Rates are expressed in megabits per second.
These numbers indicate rates that the access point will advertise to the network for the
purposes of setting up communication with other APs and client stations on the network. It is
generally more efficient to have an AP broadcast a subset of its supported rate sets.
These numbers indicate rates that the access point supports. You can check multiple rates
(click a check box to select or de-select a rate). The AP automatically chooses the most
efficient rate based on factors like error rates and distance of client stations from the AP.
D-Link Unified Access System
Page 83