Stacking
174
M4300 Series and M4300-96X Fully Managed Switches User Manual
6. Use the Admin Status radio button to enable or disable the NSF feature on the stack.
When enabled, the stack selects a backup unit. Applications on the management unit copy
data to the backup unit.
7. To cause the supervisor unit to fail over to the backup blade, click the Initiate Failover
button on the top right corner of the page.
8. To refresh the page with the latest information on the switch, click the Update
button.
The following table describes the nonconfigurable NSF Summary data that is displayed.
Table 63. NSF Summary
Field Description
Operational Status Indicates whether NSF is enabled on the chassis. NSF is enabled by
default.
Last Startup Reason The type of activation that caused the software to start the last time. The
possible values are as follows:
• Power On. The
switch
is rebooted. A power cycle or an administrative
reload command might caused this
• Cold Admin
Move.
The system resets all hardware tables without a
reboot and the application begins from a pre-initialized state, but no
data is retained from before the failover.
• W
arm Admin Move.
The administrator issued a command for the
standby manager to take over.
• Auto W
arm
. The primary management card restarted due to a failure,
and the system executed a nonstop forwarding failover.
• Auto Cold.
The system switched from the active manager to the
backup manager and could not maintain user data traf
fic. This is
usually caused by multiple failures occurring close together.
Time Since Last Restart Time since the current management card because the active management
card. For the backup manager
, the value is set to 0d:00:00:00.
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