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6.0 Summit Radio Utility
Because passive scanning consumes a longer period of
DFS Scan Time
time, DFS Scan Time (an SCU Global setting) enables
the user to determine the dwell (listen) time (in millisec-
onds or ms) when passively scanning on a DFS channel.
When decreasing the scan time (to a value lower
Note:
than the default) for DFS channels, correspond-
ing changes in the infrastructure's beacon peri-
od are recommended. For optimal performance
and reliability, Summit recommends a dwell
time that is 1.5 times that of the beacon period.
For example, if the DFS scan time is set to 30 ms,
the beacon period should be adjusted to 20 ms.
If the user adjusts this parameter directly in the
Note:
registry and configures it to a number outside of
the 20-500 ms range, the setting value will re-
turn to the default (120 ms).
Frag Thresh
Frag Thresh (fragmentation threshold) is an SCU Global
setting that indicates the packet size (in bytes) at which
the packet is fragmented. For SCU, the Frag Thresh
integer range is 256 to 2346 (bytes) with a default setting
of 2346 bytes.
For 30AG (SDC-MSD30AG and SDC-SSD30AG)
Note:
radio modules, this parameter is disabled.
Hide Passwords
Hide Passwords is an SCU Global setting that indicates
whether or not security information is masked. If this
setting is turned on, SCU (along with EAP authentica-
tion dialog boxes) masks credentials and other sensitive
information.
The SCU default setting is Off.
LED
LED is an SCU Global setting that indicates whether or
not an LED is used. This setting applies only to select
Summit devices/radios.
Logon Options
Ping Delay is an SCU Global setting that indicates the
Ping Delay ms
amount of time (in milliseconds or ms) between succes-
sive ping requests.
A ping timeout integer value can range from 0 to
7200000 ms. The SCU default is 1000 ms.
Ping Payload is an SCU Global setting that indicates the
Ping Payload
amount of data (in bytes) that is transmitted on a ping.
Ping payload values include 32, 64, 128, 256, 512, and
1024 bytes. The SCU default is 32 bytes.
Ping Timeout is an SCU Global setting that indicates the
Ping Timeout
amount of time (in milliseconds) that passes without a
ms
response before the ping request is considered a failure.
A ping timeout integer value can range from 1 to 30000
ms. The SCU default is 5000 ms.
PMK (Pairwise Master Key) Caching is an SCU Global
PMK Caching
setting that indicates the type of PMK caching to use
(Standard or OPMK) with a WPA2 encryption type.
PMK caching is an alternative to CCKM supported
with WPA2. The goal of PMK caching is to speed up
roaming between access points by accomplishing 802.1X
reauthentications without communicating with the
authentication server. When a station does an initial
authentication to the WLAN infrastructure, both sides
receive the information needed for reauthentications.
If there are no controllers, then Standard PMK caching
is used and reauthentication information is cached only
on the initial access point. When the station tries to
reauthenticate to that access point, the station and the
access point use the cached information to do the four-
way handshake to exchange keys.
(cont'd)
If there are controllers, then Opportunistic PMK
PMK Caching
(OPMK) caching is used and reauthentication informa-
(cont'd)
tion is cached on the controllers. When the station tries
to reauthenticate, the station and the controller behind
the access point use the cached information to do the
four-way handshake to exchange keys.
Use the PMK Caching global setting to configure the
type of PMK caching supported by the infrastructure.
If the Summit radio is configured for one type of PMK
caching and the infrastructure supports the other type,
then PMK caching will not work, and every roam will
require a full 802.1X authentication that requires inter-
action with an authentication server.
If the active profile has an Encryption setting of WPA2
CCKM, then the Summit radio ignores the PMK Cach-
ing global setting and attempts to use CCKM.
Roam Delta
Roam delta indicates the signal strength (RSSI) level (in
dBm) that the radio looks for in a different access point
(after the roam trigger is met) before it attempts to roam
to the new access point.
Note:
Roam Period
Roam period indicates the amount of time a radio col-
lects RSSI scan data (after association or a roam scan)
before it considers roaming to a different access point.
Note:
Roam Trigger
Roam trigger indicates the signal strength (RSSI) (in
dBm) at which the radio scans for an access point with
a better signal strength. When scanning for a different
access point, the radio looks for one with a RSSI at the
indicated roam delta dBm level or stronger.
Note:
RTS Thresh (Request To Send threshold) is an SCU
RTS Thresh
Global setting that indicates the packet size (in bytes) at
which a Request To Send (RTS) or Clear To Send (CTS)
is required on the link.
For SCU, the RTS Thresh integer range is 0 to 2347
(bytes) with a default setting of 2347 bytes.
Note:
Antenna diversity refers to the use of multiple antennas
Rx Diversity
to increase the odds that a functional signal is received.
Rx (Receive) Diversity is an SCU Global setting that in-
dicates how to handle antenna diversity when receiving
data from an access point. Rx Diversity setting options
include:
•
On-Start on Main
antenna upon startup.
•
On-Start on Aux
antenna upon startup.
•
Main only
•
Aux only
Note:
The Task Bar Icon is an SCU Global setting that allows
Tray Icon
the user to enable or disable the System Tray icon.
The Task Bar Icon provides a status for the device's Sum-
mit radio and enables the user to launch SCU. This service
is available only for Windows CE and Windows Mobile.
108
For an example of how Roam Delta works, refer
to Standard Roaming.
For an example of how Roam Period works, refer
to Standard Roaming.
For an example of how Roam Trigger works, re-
fer to Standard Roaming.
For 30AG (MSD30AG and SSD30AG) radio
modules, this parameter is disabled.
- Indicates use of the main
- Indicates use of the auxiliary
- Indicates use of the main antenna only.
- Indicates use of the auxiliary antenna only.
Summit does not support the AUX antenna as a
single-antenna solution.
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