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Configuring System Information
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ProSafe M5300 Switch
NSF
Use the NSF Summary page to enable nonstop forwarding feature on the stack, view
operational status information, and to initiate a warm restart of the management unit.
When nonstop forwarding is enabled, if the management unit of a stack fails, the backup unit
takes over as the master without clearing the hardware tables of any of the surviving units.
Data traffic continues to be forwarded in hardware while the management functions initialize
on the backup unit.
NSF is enabled by default on platforms that support it. The administrator may wish to disable
NSF in order to redirect the CPU resources consumed by data checkpointing.To display the
NSF Summary page, click System
Stacking Advanced NSF > NSF Summary. A screen
similar to the following is displayed.
To configure NSF:
1. To enable or disable NSF on the switch, select the desired option from the Admin Mode
field. When enabled, the stack selects a backup unit to receive checkpointed data from
applications on the management unit.
2. Click INITIATE FAILOVER to start a warm restart. On a warm restart, the backup unit
becomes the management unit without clearing its hardware tables (on a cold restart,
hardware tables are cleared). Applications apply checkpointed data from the former
management unit to the backup unit as the original management unit reboots.
If the system is not ready for a warm restart, for example because no backup unit has
been elected or one or more members of the stack do not support nonstop forwarding,
the command fails with a warning message.
3. Click APPLY if you have updated the NSF Admin Status. If you want the switch to retain the
new setting across a power cycle, you must perform a save.