Chapter 29 Object
USG20(W)-VPN Series User’s Guide
473
Activate
Select this option to make this profile active.
Profile Name
Enter up to 31 alphanumeric characters to be used as this profile’s name. Spaces and
underscores are allowed.
802.11 Band
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 802.11ac/a/n wireless clients.
Channel Width
Select the wireless channel bandwidth you want the AP to use.
A standard 20 MHz channel offers transfer speeds of up to 217Mbps (2.4GHz) or
217Mbps (5GHZ) whereas a 40MHz channel uses two standard channels and offers
speeds of up to 450Mbps (2.4GHz) or 450Mbps (5GHZ). An IEEE 802.11ac-specific
80MHz channel offers speeds of up to 1.3Gbps.
40 MHz (channel bonding or dual channel) bonds two adjacent radio channels to
increase throughput. A 80 MHz channel consists of two adjacent 40 MHz channels. The
wireless clients must also support 40 MHz or 80 MHz. It is often better to use the 20
MHz setting in a location where the environment hinders the wireless signal.
Because not all devices support 40 MHz and/or 80 MHz channels, select
20/40MHz
or
20/40/80MHz
to allow the AP to adjust the channel bandwidth automatically.
Select
20MHz
if you want to lessen radio interference with other wireless devices in
your neighborhood or the wireless clients do not support channel bonding.
Channel
Selection
Select the wireless channel which this radio profile should use.
Select
DCS
to have the AP automatically select the radio channel upon which it
broadcasts by scanning the area around it and determining what channels are
currently being used by other devices.
Select
Manual
and specify the channels the AP uses.
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.
Some 5 GHz channels include the label
indoor use only
. These are for use with an
indoor AP only. Do not use them with an outdoor AP.
Note: If you change the country code later,
Channel Selection
is set to
Manual
automatically.
DCS Time
Interval
This field is available when you set
Channel Selection
to
DCS
.
Enter a number of minutes. This regulates how often the USG surveys the other APs
within its broadcast radius. If the channel on which it is currently broadcasting
suddenly comes into use by another AP, the USG will then dynamically select the next
available clean channel or a channel with lower interference.
Enable DCS
Client Aware
This field is available when you set
Channel Selection
to
DCS
.
Select this to have the AP wait until all connected clients have disconnected before
switching channels.
If you disable this then the AP switches channels immediately regardless of any client
connections. In this instance, clients that are connected to the AP when it switches
channels are dropped.
Table 190
Configuration > Object > AP Profile > Add/Edit Radio Profile (continued)
LABEL
DESCRIPTION
Summary of Contents for ZyWall USG20-VPN
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Page 99: ...99 PART II Technical Reference ...
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