Quatech AirborneDirect WLNG-ET Series Especificações descarregar pdf (Página 20)

1 – CLI Overview

Page 14 Airborne™ Product Family CLI Reference Guide 100-8005-101G

Quatech, Inc. Confidential

If wl-ssid is set to the value “any”, the Module will perfrom a scan of APs and attempt to

associate with the AP that reports the highest signal quality. In this configuration, the 802.11

roaming feature is not supported. The use of the “any” SSID allows the Module to associate

with any AP that is in range. Therefore, as the Module becomes mobile, it may associate with

an AP that is not in your expected network (as a result, roaming may not work).

If wl-ssid is set to a value that is not the “any” string, the Module will scan for APs that match

the SSID and 802.11 capability information header. If a matching AP is found, the Module will

associate. As the Module becomes mobile, it will only roam to APs that match the SSID and

802.11 capability information header.

Roaming is primarily a function of the AP. The APs in your network should monitor the signal

strength of the Module and use its Inter Access Point Protocol on your network backbone to

transition the Module’s association to another AP that is closer to the Module. The role of the

Module in roaming is to allow itself to re-associate with the matching AP that is now in range.

The wl-rate command affect how readily the Module will disassociate from an AP and

associate with another while roaming. A high setting causes the Module to more readily switch

to another AP. The wl-rate setting specifies the Module’s maximum wireless data rate in

Mbps. For rates above 1 Mbps, the Module may fall back to a lower rate. Lower data rates may

result in better range, causing the Module to remain connected to the current AP. By increasing

the rate, the Module will tend to have reduced range and switch more frequently to another AP.

1.8 WPA-LEAP SECURITY

The WPA and LEAP software modules provide advanced security configuration and

communication services required by today’s enterprise-class deployments.

Please refer to IEEE standard 802.1x 2001 (section 4) and IEEE standard 802.11i 2004 (section

4) for additional information.

Note:

The blank character (space) may not be included in a pass phrase or LEAP

password.

1.8.4 Computer Resource Requirements

WPA-PSK

In order to function properly, an Access Point that supports WPA-PSK must be available. The

WPA-PSK passphrase installed on the Access Point must match the passphrase configured on

the WLN.

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