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Catalyst 3750 Switch Software Configuration Guide
OL-8550-02
Chapter 5 Managing Switch Stacks
Understanding Switch Stacks
• “IP Routing and Switch Stacks” section on page 35-3
• “IPv6 and Switch Stacks” section on page 36-7
• “HSRP and Switch Stacks” section on page 39-4
• “Multicast Routing and Switch Stacks” section on page 40-8
• “Fallback Bridging and Switch Stacks” section on page 42-3
Switch Stack Management Connectivity
You manage the switch stack and the stack member interfaces through the stack master. You can use the
CLI, SNMP, Network Assistant, and CiscoWorks network management applications. You cannot manage
stack members on an individual switch basis.
These sections provide switch stack connectivity information:
• Connectivity to the Switch Stack Through an IP Address, page 5-16
• Connectivity to the Switch Stack Through an SSH Session, page 5-16
• Connectivity to the Switch Stack Through Console Ports, page 5-16
• Connectivity to Specific Stack Members, page 5-17
Connectivity to the Switch Stack Through an IP Address
The switch stack is managed through a single IP address. The IP address is a system-level setting and is
not specific to the stack master or to any other stack member. You can still manage the stack through the
same IP address even if you remove the stack master or any other stack member from the stack, provided
there is IP connectivity.
Note Stack members retain their IP addresses when you remove them from a switch stack. To avoid a conflict
by having two devices with the same IP address in your network, change the IP address or addresses of
the switch that you removed from the switch stack.
For related information about switch stack configurations, see the “Switch Stack Configuration Files”
section on page 5-14.
Connectivity to the Switch Stack Through an SSH Session
The Secure Shell (SSH) connectivity to the switch stack can be lost if a stack master, running the
cryptographic version of the IP base image or IP services image software, fails and is replaced by a
switch that is running a noncryptographic version of the software. We recommend that a switch running
the cryptographic version of the IP base image or IP services image software be the stack master.
Encryption features are unavailable if the stack master is running the noncryptographic version of the IP
base image or IP services image software.
Connectivity to the Switch Stack Through Console Ports
You can connect to the stack master through the console port of one or more stack members.
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