User guide

Radio and Antenna Configuration
4-20 Configuring the Enterasys Wireless Standalone 802.11n AP
Channel Width Select the channel width. The AP can use two channels at the
same time to create a 40MHz wide channel. To achieve a 40MHz
channel width, the AP employs channel bonding — two 20MHz
channels at the same time. Channel bonding improves the
effective throughput of the wireless LAN.
When selecting Channel Width, the following options are
available:
• 20MHz (default) – Allows 802.11n clients to use the primary
channel (20MHz) and non-802.11n clients, as well as beacons
and multicasts, to use the 802.11a/b/g radio protocols.
• 40MHz – Allows 802.11n clients that support channel bonding
to use it. 802.11n clients that do not support channel bonding
can use the 20-MHz channel width and legacy clients will use
the 802.11a/b/g or 802.11a/b protocols.
• Auto – Automatically switches between 20MHz and 40MHz,
depending on how busy the extension channel is.
Guard Interval Select the guard interval, Long or Short. It is recommended to
use a short guard interval in small rooms (for example, a small
office space) and a long guard interval in large rooms (for
example, a conference hall). The default guard interval is Long.
Channel Select the wireless channel that the AP uses to communicate with
wireless devices. Depending on the regulatory domain (based on
country, environment, antenna type, radio mode and channel
width), some channels may be restricted.
The auto selection (default) allows the AP to select an appropriate
channel automatically (ACS). If auto is selected, the current
selected channel displays next to the Channel drop-down menu.
The auto-cluster selection enables coordinated ACS on all APs
within the cluster.
Field Description