User's Manual

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Field Name Description
Band The wireless band that you are configuring. This field is set to
5GHz
in the
Wireless
>
5 GHz Band
submenu and to
2.4GHz
in the
Wireless
>
2.4 GHz Band
submenu.
Channel Select the Wi-Fi channel you want to use. Options include
Auto
and
36/80
-
161/80
for the 5 GHz band and are
Auto
and
1
-
7
for the 2.4 GHz band. It is recommended to
use only non-overlapping channels, e.g.,
1
,
5
and
7
.
Auto Channel Timer
(min)
Enter the frequency (in minutes) at which the gateway scans channels for inter-
ference. If a threshold of inference is detected, a new channel will be selected auto-
matically. Options are:
0
-
65535
minutes. The default is
15
minutes.
MIMO-OFDM This option is set to
On
and cannot be changed.
Bandwidth Select the operating bandwidth. Options are:
l 20MHz: Only one 20MHz band is utilized.
l 40MHz: Better throughput is provided by using two adjacent 20MHz bands.
l 80MHZ: Best throughput.
Control Sideband (
Applies only to 40 MHz operation
) The control sideband is the 20 MHz channel on
which the network is advertised, where client devices will find beacons. Options are:
l Lower: The additional 20 MHz of bandwidth for data will be positioned above
the control channel.
l Upper: The additional 20 MHz of bandwidth for data will be positioned below
the control channel. Also, selecting this option changes the channel choices
displayed.
MIMO Data Rate The desired physical transmission rate. This option is set to
Auto
(the Auto-Fallback
feature is enabled) and cannot be changed. This allows the gateway to automatically
use the fastest possible data rate. Auto-Fallback will negotiate the best possible con-
nection speed between the gateway and a wireless client.
RTS/CTS Protection Select whether to enable 802.11n and legacy clients to both work effectively on the
network. Options are:
l Auto: Provides maximum security but produces a noticeable impact on
throughput. With this option, RTS/CTS behavior permits legacy clients to
become aware of 802.11n transmit times, but decreases overall throughput.
This is the default.
l Off: Provides better throughput.
Support MIMO Clients
Only
(
Available for SR515ac models only
) Select whether to restrict non-MIMO clients from
accessing the gateway. Options are
On
and
Off
. The default is
Off
.
RIFS Advertisement Reduced Inter-Frame Space (RIFS). Improves performance by reducing dead time
required between OFDM transmissions. Options are
Auto
and
Off
.
Recommended primarily for "greenfield" deployments that include only 802.11n cli-
ents, and no legacy clients.
OBSS Coexistence Coexistence of Overlapping Basic Service Sets (OBSS) prevents overlapping in the 20
MHz and 40 MHz frequencies. Options are:
l Disable: The gateway advertises and operates in 40 MHz mode regardless of
what other networks are configured nearby.