Stack Software Compatibility Recommendations - Cisco Catalyst 2960 Software Configuration Manual

Chapter 7 Managing Switch Stacks
Table 7-1 Results of Comparing the Provisioned Configuration with the Provisioned Switch (continued)
Scenario
The stack member number of
the provisioned switch is not
found in the provisioned
configuration.
If you add a provisioned switch that is a different type than specified in the provisioned configuration to
a powered-down switch stack and then apply power, the switch stack rejects the (now incorrect) switch
stack-member-number provision type global configuration command in the startup configuration file.
However, during stack initialization, the nondefault interface configuration information in the startup
configuration file for the provisioned interfaces (potentially of the wrong type) are executed. Depending
on how different the actual switch type is from the previously provisioned switch type, some commands
are rejected, and some commands are accepted.
If the switch stack does not contain a provisioned configuration for a new switch, the switch joins the
Note
stack with the default interface configuration. The switch stack then adds to its running configuration a
switch stack-member-number provision type global configuration command that matches the new
switch.
For configuration information, see the
Effects of Replacing a Provisioned Switch in a Stack
When a provisioned switch in a switch stack fails, is removed from the stack, and is replaced with
another switch, the stack applies either the provisioned configuration or the default configuration to it.
The events that occur when the switch stack compares the provisioned configuration with the
provisioned switch are the same as those described in the
Stack" section on page
Effects of Removing a Provisioned Switch from a Stack
If you remove a provisioned switch from the switch stack, the configuration associated with the removed
stack member remains in the running configuration as provisioned information. To completely remove
the configuration, use the no switch stack-member-number provision global configuration command.

Stack Software Compatibility Recommendations

All stack members must run the same Cisco IOS software version to ensure compatibility in the stack
protocol version among the members.
OL-26520-01
"Provisioning a New Member for a Stack" section on page
7-8.
Catalyst 2960 and 2960-S Switches Software Configuration Guide, Release 15.0(1)SE
Understanding Stacks
Result
The switch stack applies the default
configuration to the provisioned switch
and adds it to the stack.
"Effects of Adding a Provisioned Switch to a
7-21.
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