Managing Switch Stacks Switch Stack Configuration Scenarios Scenario Result Active switch election specifically determined by the configuration file Assuming that both member switches have the same priority value: 1. Make sure that one stack member has a default configuration and that the other stack member has a saved (nondefault) configuration file. 2. Restart both member switches at the same time. The stack member with the saved configuration file is elected active switch. Active switch election specifically determined by the MAC address Assuming that both member switches have the same priority value, configuration file, and license level, restart both member switches at the same time.
The stack member with the lower MAC address is elected active switch . Stack member number conflict Assuming that one stack member has a higher priority value than the other stack member: 1. 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 EXEC command. 2. Restart both member switches at the same time. The stack member with the higher priority value retains its stack member number. The other stack member has a new stack member number. Add a stack member 1. Power off the new switch. 2. Through their StackWise ports, connect the new switch to a powered-on switch stack. 3.
Power on the new switch. The active switch is retained. The new switch is added to the switch stack. Active switch failure Remove (or power off) the active switch. The standby switch becomes the new active switch. All other member switches in the stack remain as member switches and do not reboot. Add eight member switches 1. Through their StackWise ports, connect eight devices. 2. Power on all devices. Two devices become active switches. One active switch has eight 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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