User Manual

Value: Full (all channels); 1,6,11 (the most commonly used 2.4 GHz channels); 1,7,13 (for ETSI and
TELEC radios only); or Custom (see note on Custom below the list)
Default: Full
DFS Channels: Support for 5 GHz (802.11a) channels where support for dynamic frequency selection
(DFS) is required
Value: On, Off
Default: Off
Aggressive Scan: When this setting is On and the current connection to an AP becomes tenuous, the radio
scans for available APs more aggressively. Aggressive scanning complements and works in conjunction
with the standard scanning that is configured through the Roam Trigger, Roam Delta, and Roam Period
settings. Summit recommends that the Aggressive Scan global setting be On unless there is significant
co-channel interference because of overlapping coverage from APs that are on the same channel.
Value: On or Off
Default: On
CCX Support: Use of Cisco information element (IE) and CCX version number; support for CCX features
Value:
Full: Use Cisco IE and CCX version number; support all CCX features
Optimized: Use Cisco IE and CCX version number; support all CCX features except
AP-assisted roaming, AP-specified maximum transmit power, and radio management
Off: Do not use Cisco IE and CCX version number
Default: Optimized
WMM: Use of Wi-Fi Multimedia Extensions, also known as WMM
Value: On, Off
Default: Off
Frag Thresh: If packet size (in bytes) exceeds threshold, then packet is fragmented
Value: An integer from 256 to 2346
Default: 2346
RTS Thresh: Packet size above which RTS/CTS is required on link
Value: An integer from 0 to 2347
Default: 2347
RX Diversity: How to handle antenna diversity when receiving data from AP
Value:
On-Start on Main: On startup use main antenna
On-Start on Aux: On startup, use auxiliary antenna
Main only: Use main antenna only
Aux only: Use auxiliary antenna only
Default: On-Start on Main
TX Diversity: How to handle antenna diversity when transmitting data to AP
Value:
Main only: Use main antenna only
Aux only: Use auxiliary antenna only
On: Use diversity
Default: On
LED: Use of LED; available only with MCF10G
Value: On, Off
Default: Off
If SCU displays a value of "Custom" for a global setting, then the operating system registry has been edited to
include a value that is not available for selection on the Global window. Selecting "Custom" has no real effect. If
SCU displays a value other than "Custom" and you select the value of "Custom" and tap the Commit button, then
SCU reverts to the value that it displayed before you selected "Custom".
The following SCU global settings, which apply to SCU itself, can be changed in SCU: