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Cisco Catalyst Switch Module 3110 and 3012 for IBM BladeCenter Software Configuration Guide
OL-12189-01
Chapter 5 Managing Switch Stacks
Configuring the Switch Stack
Configuring the Switch Stack
These sections contain this configuration information:
• Default Switch Stack Configuration, page 5-21
• Configuration Guidelines, page 5-21
• Enabling Persistent MAC Address, page 5-22
• Assigning Stack Member Information, page 5-24
Default Switch Stack Configuration
Table 5-3 shows the default switch stack configuration.
Configuration Guidelines
Follow these guidelines when creating and configuring switch stacks:
• AMM version incompatibility—In a switch stack with members in more than one enclosure, all of
the enclosures might not support stacking. If this occurs, all of the stack members do not join the
stack. The stack members in the enclosure with the AMM that supports stacking can power up and
can join stack. However, members with the enclosure that do not support stacking only power on as
standalone switches and do not join the stack.
To resolve this problem, upgrade the AMM software to a version that supports stacking, and then
reboot the stack members.
• Protected mode—The protected-mode feature is supported only on a standalone switch. For
information about using protected mode, see the “Configuring Protected Mode” section on
page 3-15.
If protected mode is enabled on the stack master and a member leaves the stack, protected mode is
still enabled on the switch.
If protected mode is disabled on the stack master and the member leaves the stack, protected mode
is disabled on the switch.
• If a stack member leaves the stack, the AMM resumes control of the switch. The internal Ethernet
management port on the switch and the previously configured default gateway are now active.
Table 5-3 Default Switch Stack Configuration
Feature Default Setting
Stack MAC address timer Disabled.
Stack member number 1
Stack member priority value 1
Offline configuration The switch stack is not provisioned.