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Table 20 Configuration > Wireless > Wireless
LABEL
Channel Width
802.11 Mode
Security Mode
Apply
Cancel
See the rest of this chapter for information on the other labels in this screen.
7.3 Wireless Security
The screen varies depending on what you select in the Security Mode field.
Chapter 7 Wireless LAN
DESCRIPTION
Select the wireless channel width used by EMG2881-T20A.
A standard 20 MHz channel offers transfer speeds of up to 144Mbps (2.4GHz) or 217Mbps
(5GHZ) whereas a 40MHz channel uses two standard channels and offers speeds of up to
300Mbps (2.4GHz) or 450Mbps (5GHZ). An IEEE 802.11ac-specific 80MHz channel offers speeds
of up to 1.3Gbps.
Because not all devices support 40 MHz and/or 80 MHz channels, select Auto 20/40 MHz or
Auto 20/40/80 MHz to allow the EMG2881-T20A to adjust the channel bandwidth
automatically.
Select 20 MHz if you want to lessen radio interference with other wireless devices in your
neighborhood or the wireless clients do not support channel bonding.
If you are in the Wireless LAN 2.4G > General screen, you can select from the following:
•
802.11b: allows either IEEE 802.11b or IEEE 802.11g compliant WLAN devices to associate
with the EMG2881-T20A. In this mode, all wireless devices can only transmit at the data
rates supported by IEEE 802.11b.
•
802.11g: allows IEEE 802.11g compliant WLAN devices to associate with the Device. IEEE
802.11b compliant WLAN devices can associate with the EMG2881-T20A only when they
use the short preamble type.
•
802.11bg: allows either IEEE 802.11b or IEEE 802.11g compliant WLAN devices to associate
with the EMG2881-T20A. The EMG2881-T20A adjusts the transmission rate automatically
according to the wireless standard supported by the wireless devices.
•
802.11n: allows IEEE 802.11n compliant WLAN devices to associate with the EMG2881-
T20A. This can increase transmission rates, although IEEE 802.11b or IEEE 802.11g clients will
not be able to connect to the EMG2881-T20A.
•
802.11gn: allows either IEEE 802.11g or IEEE 802.11n compliant WLAN devices to associate
with the EMG2881-T20A. The transmission rate of your EMG2881-T20A might be reduced.
•
802.11 bgn: allows IEEE802.11b, IEEE802.11g and IEEE802.11n compliant WLAN devices to
associate with the EMG2881-T20A. The transmission rate of your EMG2881-T20A might be
reduced.
If you are in the Wireless LAN 5G > General screen, you can select from the following:
•
802.11a: allows only IEEE 802.11a compliant WLAN devices to associate with the EMG2881-
T20A.
•
802.11a/an: allows both IEEE802.11n and IEEE802.11a compliant WLAN devices to
associate with the EMG2881-T20A. The transmission rate of your EMG2881-T20A might be
reduced.
•
802.11a/an/ac: allows both IEEE802.11a, IEEE802.11n and IEEE802.11ac compliant WLAN
devices to associate with the EMG2881-T20A. The transmission rate of your EMG2881-T20A
might be reduced.
Select WPA2-PSK to add security on this wireless network. The wireless clients which want to
associate to this network must have same wireless security settings as this device. After you
select to use a security, additional options appears in this screen. See
for detailed information on different security modes. Or you can select No Security to allow
any client to associate this network without authentication.
Note:
Click Apply to save your changes back to the EMG2881-T20A.
Click Cancel to reload the previous configuration for this screen.
EMG2881-T20A User's Guide
59
Section 7.3 on page 59
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