C H A P T E R 17 Configuring High Availability - HP Cisco MDS 9216 - Fabric Switch Configuration Manual

Chapter 17 Configuring High Availability
S e n d d o c u m e n t a t i o n c o m m e n t s t o m d s f e e d b a c k - d o c @ c i s c o . c o m
Figure 17-1
Click Admin > Reset Switch on the main Device Manager screen.
Step 2
Figure 17-2
Click Switch to Standby.
Step 3
Switchover Guidelines
Be aware of the following guidelines when performing a switchover:
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Process Restartability
Process restartability provides the high availability functionality in Cisco MDS 9000 Family switches.
It ensures that process-level failures do not cause system-level failures. It also restarts the failed
processes automatically. This vital process functions on infrastructure that is internal to the switch.
See the
Synchronizing Supervisor Modules
The running image is automatically synchronized in the standby supervisor module by the active
supervisor module. The boot variables are synchronized during this process.
OL-16184-01, Cisco MDS SAN-OS Release 3.x
Modules Screen Shows Current Supervisor
Reset Switch Dialog Box
When you manually initiate a switchover, system messages indicate the presence of two supervisor
modules.
A switchover can only be performed when two supervisor modules are functioning in the switch.
The modules in the chassis are functioning as designed.
"Displaying System Processes" section on page 70-1.
Cisco MDS 9000 Family CLI Configuration Guide
Switchover Guidelines
17-3