Cisco CATALYST 2960

7-16
Catalyst 2960 and 2960-S Switches Software Configuration Guide, Release 15.0(1)SE
OL-26520-01
Chapter 7 Managing Switch Stacks
Understanding Stacks
Specific Members
If you want to configure a specific member port, you must include the stack member number in the CLI
notation.
To access a specific member, see the “Accessing the CLI of a Specific Member” section on page 7-22.
Stack Configuration Scenarios
Most of the scenarios in Table 7-2 assume at least two switches are connected through their stack ports.
Table 7-2 Switch Stack Configuration Scenarios
Scenario Result
Master election
specifically determined
by existing masters
Connect two powered-on stacks through the stack
ports.
Only one of the two masters becomes the
new stack master.
Master election
specifically determined
by the member priority
value
1. Connect two switches through their stack ports.
2. Use the switch stack-member-number priority
new-priority-number global configuration
command to set one member with a higher
member priority value.
3. Restart both members at the same time.
The member with the higher priority value
is elected master.
Master election
specifically determined
by the configuration file
Assuming that both members have the same priority
value:
1. Make sure that one member has a default
configuration and that the other member has a
saved (nondefault) configuration file.
2. Restart both members at the same time.
The member with the saved configuration
file is elected master.
Master election
specifically determined
by the MAC address
Assuming that both members have the same priority
value, configuration file, and software image, restart
both stack members at the same time.
The member with the lower MAC address
is elected master.
Member number conflict Assuming that one member has a higher priority
value than the other member:
1. Ensure that both members have the same member
number. If necessary, use the switch
current-stack-member-number renumber
new-stack-member-number global configuration
command.
2. Restart both members at the same time.
The member with the higher priority value
keeps its member number. The other
member has a new stack member number.
Add a member
1. Power off the new switch.
2. Through their stack ports, connect the new
switch to a powered-on stack.
3. Power on the new switch.
The master is kept. The new switch is
added to the stack.