User's Manual

CHAPTER FIVE - CONECTIVITY

a better one, the aggressive scanning stops and the WLAN driver follows its

normal procedures for WLAN association. (Of course, you may need to bring

your PL3000 within the range of some access point that your PL3000 can

associate with.)

Note! Some access points have a configuration parameter referred to

such as ‘Broadcast Wireless Network Name (SSID)’, meaning that you

can prevent the access point sending its SSID in one way or another.

However, the SSID is an important scanning parameter. If your access

point does not broadcast its SSID, the ‘Aggressive Scan’ mode and the

roaming may not work as expected. In addition, hiding an SSID can cause

problems with 802.11 management in general. Over and above, disabling

AP’s SSID broadcasting does not provide any real security for your WLAN

network.

Miscellaneous WLAN Global Settings

• CCX features: (Cisco Compatible Extensions, CCX for short) The default

value ‘Optimized’ of this setting should work OK with autonomous access

points, no matter which manufacturer. To disable totally the features of the

CCX there is a settings value of ‘Off’. If your WLAN network is based on the

concept of Cisco wireless LAN infrastructure, you may set this parameter to

‘Full’. Be aware that the ‘Full’ setting overrides the settings as follows: all the

roaming parameters (see above) and a ‘Tx Power’ setting of an active profile

(see a ‘Profile’ properties page). On the other hand, the ‘Optimized’ value omits

the following features of the CCX: AP-assisted roaming, AP-specified

maximum transmit power, and radio management.

• WMM: (Wi-Fi Multimedia) This is an on-off switch to enable or to disable a

multimedia extension of the WLAN communication. As an aside, WMM (aka

802.11e) provides basic Quality of Service (QoS) features to your IEEE 802.11

network. If you enable the WMM on your PL3000, check that your access point

also uses the WMM property and vice versa.

• Auth Server: If your WLAN network access control is based on some EAP

method, and if the SDC Supplicant is in use, the Auth Server setting is worth

considering; especially if your authentication server is Cisco Secure ACS. The

Auth Server parameter can have two values: ‘Type 1’ and ‘Type 2’.