Technical data

210 Meru System Director Configuration Guide © 2012 Meru Networks, Inc.
Configure an AP’s Radios with the Web UI
Channel
In the drop-down list, select the channel number for the wireless
interface to use. The channel numbers displayed depend on the RF
Band Selection and the regulatory domain for each country; for
example, in the United States 802.11b shows channels 1 through 11 and
802.11a shows channels 36, 40, 44, etc. Two access points can belong
to the same virtual AP only if they are on the same channel. Thus, two
neighboring access points on different channels cannot perform
seamless handoff (0 ms).
Short Preamble
Short preambles are more efficient on the air, but not all clients
support them.
— On
— Off
RF Band
Selection
Select the RF Band this interface uses. Available selections are based
on both the AP model and radio cards installed (for example, 802.11an)
and the licensing in effect.
Transmit Power
High
Meru AP radios operate at their maximum power level by default. High
power level increases the signal strength of the frames received by the
client stations, allowing a client station to decode frames at a higher
rate and increasing the coverage area. This causes minimal
interference because Meru uses Virtual Cell technology, moving clients
to a better AP without re-association. For a very few cases, we
recommend that you reduce the power level on APs due to
co-channel-interference. Check with Support first to make sure your
issue really is due to co-channel-interference. To change transmit
power, change the value in the Transmit Power High (dBm) field. The
maximum level depends on the country code and the RF band in use.
AP Mode Select whether the radio for the interface is in Normal Mode (servicing
clients first and scanning in the background) or Scanning Mode
(dedicated monitoring for Rogue APs).
Protection
Mode
Configures 802.11b/g interoperability mode. This setting defaults to
auto and should not be changed without consulting Meru Support.
Channel Width Channel Width can be:
— 20 MHz
— 40MHz Extension Channel Above
— 40MHz Extension Channel Below
Note that all APs in a Virtual Cell must have the same channel width.
MIMO Mode Select:
2x2 for either AP1000 or AP300 with an 802.3af PoE
3x3 for AP300 or AP400 depending on radio and power source
configuration
Field Description