User's Manual Part 2
Release8InstallationandConfigurationGuide
Issue2,November2007 Draft5forRegulatoryReview 195
Site Name
This field indicates the name of the SM. You can assign or change this name on the
Configuration web page of the SM. This information is also set into the sysName SNMP
MIB-II object and can be polled by an SNMP management server.
Software Version
This field displays the software release that operates on the SM, the release date and
time of the software.
Software Boot Version
This field indicates the CYCLONEBOOT version number.
FPGA Version
This field displays the version of FPGA that runs on the SM.
Session Timeout
This field displays the timeout in seconds for management sessions via HTTP, telnet, or
ftp access to the SM. 0 indicates that no limit is imposed.
AirDelay
This field displays the distance of the SM from the AP. To derive the distance in meters,
multiply the displayed number by 0.3048. At close distances, the value in this field is
unreliable.
Session Count
This field displays how many sessions the SM has had with the AP. Typically, this is the
sum of Reg Count and Re-Reg Count. However, the result of internal calculation may
display here as a value that slightly differs from the sum.
If the number of sessions is significantly greater than the number for other SMs, then this
may indicate a link problem or an interference problem.
Reg Count
When an SM makes a registration request, the AP checks its local data to see whether it
considers the SM to be already registered. If the AP concludes that the SM is not, then
the request increments the value of this field.
Re-Reg Count
When an SM makes a registration request, the AP checks its local data to see whether it
considers the SM to be already registered. If the AP concludes that the SM is not, then
the request increments the value of this field. Typically, a Re-Reg is the case where both
◦ an SM attempts to reregister for having lost communication with the AP.
◦ the AP has not yet observed the link to the SM as being down.
A high number in this field is often an indication of link instability or interference problems.
RSSI, Jitter, and Power Level (Avg/Last)
The Session Status tab shows the received Power Level in dBm and Jitter. Proper
alignment maximizes Power Level and minimizes Jitter. As you refine alignment, you
should favor lower jitter over higher dBm. For example, if coarse alignment gives an SM
a power level of −75 dBm and a jitter measurement of 5, and further refining