NEC IP8800/S2400 Series, Troubleshooting Manual

Page: 182 / 250

3.
Troubleshooting Functional Failures in Operation
120
3.19 Problems on Redundant Configuration of Basic
Control Unit (BCU)/Control and Switching Unit
(CSU)/Management and Switching Unit (MSU)
[IP8800/S6700] [IP8800/S6600] [IP8800/S6300]
3.19.1 Active System Switchover Is Disabled
If switch between the active system and standby system is disabled, follow instructions in the table below.
Table 3-67: Problems and Actions When Switching Active System
No. Cause for Switchover Disabled Troubleshooting Steps
1 The standby system is not
activated.
Check the STATUS LED on the
standby system. Lit in red The standby system has failed. Replace the standby system BCU, CSU,
or MSU board.
OFF or lit in
orange Board is not activated. Execute the
inactivate standby
/
activate standby command on the active system to activate the
standby system.
Blinking in
green The standby system is being activated. Wait a while until lit in green.
Lit in green The standby system is already activated, and another cause may exist. See
other items.
2 The standby system is not
prepared for switch.
Login the active system, and use
the
show system
command to
check the status of the standby
system.
fault Any one of the followings is applied:
• Activation of the standby system failed.
• Inhibited combination of the active system board and standby system
board is adopted. Eliminate the cause for failure, and restart the system.
•
Unavailable configuration has been set. Review settings in the
configuration.
Otherwise, see No. 1.
inactive Activation of the standby system is suppressed. Execute the
activate
standby
command to activate the standby system.
notconnect The standby system is not installed. Install the standby system, then
execute the
activate standby
command to activate the standby
system.
initialize Activation of the standby system is not completed. Wait until activation
completes.
active or
standby Another cause may exist. See other items.
3 Modifying configuration.
If the operation command is used
to switchover, command
execution fails. During modifying configuration, switchover by the operation command is suppressed.
Execute configuration command
status
on the active system to make all users working
with configuration log out, then switch over the system by the operation command.