ZyXEL Communications ENC User Manual page 277

The following table describes the labels in this screen.
Table 148 Radio List: Add
LABEL
Activate
Profile Name
802.11 Band
Channel
Advanced
Settings
Channel
Width
Guard
Interval
Enable A-
MPDU
Aggregation
A-MPDU Limit
A-MPDU
Subframe
Enable A-
MSDU
Aggregation
A-MSDU Limit Enter the maximum frame size to be aggregated.
Disable-
Channel
Switch for
DFS
ENC User's Guide
DESCRIPTION
Select this option to make this profile active.
Enter up to 30 alphanumeric characters to be used as this profile's name. Spaces and
underscores are allowed.
Select the wireless band which this radio profile should use.
2.4 GHz is the frequency used by IEEE 802.11b/g/n wireless clients.
5 GHz is the frequency used by IEEE 802.11a/n wireless clients.
Select the wireless channel which this radio profile should use.
It is recommended that you choose the channel least in use by other APs in the region
where this profile will be implemented. This will reduce the amount of interference
between wireless clients and the AP to which this profile is assigned.
Select the channel bandwidth you want to use for your wireless network.
Select Auto to allow the NXC5200 to adjust the channel bandwidth depending on network
conditions.
Select 20 MHz if you want to lessen radio interference with other wireless devices in your
neighborhood.
Set the guard interval for this radio profile to either short or long.
The guard interval is the gap introduced between data transmission from users in order to
reduce interference. Reducing the interval increases data transfer rates but also increases
interference. Increasing the interval reduces data transfer rates but also reduces
interference.
Select this to enable A-MPDU aggregation.
Message Protocol Data Unit (MPDU) aggregation collects Ethernet frames along with their
802.11n headers and wraps them in a 802.11n MAC header. This method is useful for
increasing bandwidth throughput in environments that are prone to high error rates.
Enter the maximum frame size to be aggregated.
Enter the maximum number of frames to be aggregated each time.
Select this to enable A-MSDU aggregation.
Mac Service Data Unit (MSDU) aggregation collects Ethernet frames without any of their
802.11n headers and wraps the header-less payload in a single 802.11n MAC header. This
method is useful for increasing bandwidth throughput. It is also more efficient than A-
MPDU except in environments that are prone to high error rates.
This field is available when you select 5G in the 802.11 Band field.
DFS (dynamic frequency selection) allows an AP to detect other devices in the same
channel. If there is another device using the same channel, the AP changes to a different
channel, so that it can avoid interference with radar systems or other wireless networks.
Select this option to disable DFS on the AP.
Chapter 8 Application
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