Active switch election specifically determined by existing active switches
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Connect two powered-on switch stacks through the StackWise ports.
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Only one of the two active switches becomes the new active switch.
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Active switch election specifically determined by the stack member priority value
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Connect two switches through their StackWise ports.
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Use the switch
stack-member-number priority new-priority-number
command to set one stack member with a higher member priority value.
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Restart both member switches at the same time.
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The stack member with the higher priority value is elected active switch.
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Active switch election specifically determined by the configuration file
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Assuming that both member switches have the same priority value:
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Make sure that one stack member has a default configuration and that the other stack member has a saved (nondefault) configuration
file.
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Restart both member switches at the same time.
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The stack member with the saved configuration file is elected active switch.
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Active switch election specifically determined by the MAC address
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Assuming that both member switches have the same priority value, configuration file, and license level, restart both member
switches at the same time.
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The stack member with the lower MAC address is elected active switch .
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Stack member number conflict
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Assuming that one stack member has a higher priority value than the other stack member:
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Ensure that both member switches have the same stack member number. If necessary, use the switch
current-stack-member-number
renumber
new-stack-member-number
command.
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Restart both member switches at the same time.
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The stack member with the higher priority value retains its stack member number. The other stack member has a new stack member
number.
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Add a stack member
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Power off the new switch.
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Through their StackWise ports, connect the new switch to a powered-on switch stack.
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Power on the new switch.
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The active switch is retained. The new switch is added to the switch stack.
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Active switch failure
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Remove (or power off) the active switch.
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One of the remaining member switches becomes the new active switch. All other member switches in the stack remain as member
switches and do not reboot.
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Add member switches
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Through their StackWise ports, connect devices.
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Power on all devices.
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Two devices become active switches. One active switch has member switches. The other active switch remains as a standalone device.
Use the Mode button and port LEDs on the device to identify which devices are active switches and which devices belong to each active switch.
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