Filter
Top Products
5-16
Catalyst 3750 Switch Software Configuration Guide
OL-8550-09
Chapter 5 Managing Switch Stacks
Understanding Stacks
Stack Through an IP Address
The stack is managed through a system-level IP address. You can still manage the stack through the same
IP address even if you remove the master or any other stack member from the stack, provided there is IP
connectivity.
Note Members keep their IP addresses when you remove them from a stack. To avoid having two devices with
the same IP address in your network, change the IP address of the switch that you removed from the
stack.
For related information about switch stack configurations, see the “Stack Configuration Files” section
on page 5-14.
Stack Through an SSH Session
The Secure Shell (SSH) connectivity to the stack can be lost if a 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. We recommend that a switch running the cryptographic version of
the IP base image or IP services image software be the master.
Stack Through Console Ports
You can connect to the master through the console port of one or more members.
Be careful when using multiple CLI sessions to the master. Commands that you enter in one session are
not displayed in the other sessions. Therefore, it is possible that you might not be able to identify the
session from which you entered a command.
We recommend that you use only one CLI session when managing the stack.
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 5-23.
Stack Configuration Scenarios
Most of the scenarios in Table 5-2 assume at least two switches are connected through their StackWise
ports.