Cisco Systems 3750E manual Current-stack-member-number Renumber new-stack-member-number

Chapter 5 Managing Switch Stacks

Understanding Switch Stacks

Table 5-2	Switch Stack Configuration Scenarios (continued)
Scenario			Result
Stack master election		Assuming that all stack members have the	The stack member with the cryptographic image and
specifically determined		same priority value:	the IP base feature set is elected stack master.
by the cryptographic		1. Make sure that one stack member has
software image and the IP
		the cryptographic image installed and
base feature set
		the IP base feature set enabled and that
		the other stack member has the
		noncryptographic image installed and
		the IP base feature set enabled.
		2. Restart both stack members at the same
		time.
Stack master election		Assuming that both stack members have the	The stack member with the lower MAC address is
specifically determined		same priority value, configuration file, and	elected stack master.
by the MAC address		feature set, restart both stack members at
		the same time.
Stack member number		Assuming that one stack member has a	The stack member with the higher priority value
conflict		higher priority value than the other stack	retains its stack member number. The other stack
		member:	member has a new stack member number.
		1. Ensure that both stack members have
		the same stack member number. If
		necessary, use the switch
		current-stack-member-number
		renumber new-stack-member-number
		global configuration command.
		2. Restart both stack members at the same
		time.
Add a stack member		1. Power off the new switch.	The stack master is retained. The new switch is
		2. Through their StackWise Plus ports,	added to the switch stack.
		connect the new switch to a powered-on
		switch stack.
		3. Power on the new switch.
Stack master failure		Remove (or power off) the stack master.	Based on the factors described in the “Stack Master
			Election and Re-Election” section on page 5-5, one
			of the remaining stack members becomes the new
			stack master. All other stack members in the stack
			remain as stack members and do not reboot.
Add more than nine stack		1. Through their StackWise Plus ports,	Two switches become stack masters. One stack
members		connect ten switches.	master has nine stack members. The other stack
		2. Power on all switches.	master remains as a standalone switch.
			Use the Mode button and port LEDs on the switches
			to identify which switches are stack masters and
			which switches belong to each stack master. For
			information about using the Mode button and the
			LEDs, see the hardware installation guide.

Catalyst 3750-E and 3560-E Switch Software Configuration Guide

OL-9775-02 5-19