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Chapter 9: Additional Access Point Features
286
sdvars set checkpoint 2
TFTP get * ap824x.prg 1
sdvars set checkpoint 3
reboot
When the software download is started, you can use SNMP to query its
progress by reading the checkpoint variable. If the variable has a value of
2, you know that the access point is trying to execute the TFTP get
statement. If the value is 3, you know the script has completed and the
reboot was executed. The value of the checkpoint variable may also be
helpful in determining where an error occurred if the script fails.
sdvars set terminate
Purpose: Sets the internal variable terminate to a specified value. Use
terminate to stop a countdown process in the access point. If either
starttime or nextpoweruptime is counting down, setting this variable stops
the timer and halts the countdown process.
Note
You should use caution when using this command. If the script file is
being downloaded or executed, setting this variable interrupts the
processing and can leave the access point in an undetermined state
that may require user intervention.
Syntax: sdvars set terminate
sdvars set setactivepointers
Purpose: Sets the setactivepointers command to change inactive
segments to active segments the next time the access point is rebooted.
This command is usually used with the nextpoweruptime command.
Syntax: sdvars set setactivepointers none/boot/data/both
where:
none does not change the active segments. The default is none. Also,
when the reboot is completed, the access point resets this value to none.
boot changes the inactive boot segment to the active boot segment.
data changes the inactive data segment to the active data segment.
both changes both the boot and data inactive segments to the active
segments.