Sagem 4450E - Manual (Page 143)

SAGEM 3P@C
3P@C Installation Manual
Page 9-2 Reproduction and communication in any form prohibited without the written permission of SAGEM SA
2) Checking running status of the system control board through the command line
Maintenance item Operation Inspection
In the hidden mode
(input the qpmz in the
config mode to enter the
hidden mode), enter the
show cpuusage all
command to check the
CPU utilization.
Check whether the CPU utilization
is very high (if the data is being
saved or the Flash is being written,
the high CPU utilization is normal,
but this process does not last
long). The normal CPU utilization
of the service board is not higher
than 20%.
Check the system
resource utilization
Use the command show
cpuusage record
to
check the time when the
CPU utilization reaches
maximum value (in the
hidden mode)
Check the CPU utilization in the
historical durations.
Check the version of
the system control
board show version all
If the version of the master system
control board is not consistent with
that of the standby system control
board, the system running fault will
happen.
Show the running
time from the last
reboot to now show running-time (in
the hidden mode)
Check whether an accidental
master/standby switchover occurs
to the system control board from
the last reboot to now.
Check the system
time: show time (in the config
mode) The time here should be the
standard Beijing time.
9.1.2. Hot Plugging
The device supports the hot plugging of the system control board in the normal running, and the configuration
information of the original card is saved in the system in the plugging process.
„ If the device is just configured with a system control board, the system will not run when you
unplug the system control board.
„ If the device is configured with two system control boards, the system will run normally when
you unplug the standby system control board. If you unplug the master system control board,
the master/standby switchover will occur to the device.
After unplugging a card from a slot, you cannot plug a new card immediately, and you should do it in a minute.
Note
During the system startup process, the hot plugging is not
supported.
9.1.3. Master/Standby Switchover
The master/standby switchover refers to that the master/standby relationship switchover happens when the
system control board is operated manually or some faults occur to it in the redundancy mode.
The master/standby switchover is a self-protection function of the system. When some faults occur to the master
system control board, the master/standby is implemented automatically. In this way, the service is transferred to
the standby system control board, and the system can continue to run.