Preventing Switch Stack Problems - Cisco Catalyst 9200 Configuration Manual

Troubleshooting the Software Configuration
Device(config)# enable secret password
The secret password can be from 1 to 25 alphanumeric characters, can start with a number, is case sensitive, and allows
spaces but ignores leading spaces.
Step 7 Return to privileged EXEC mode:
Device(config)# exit
Device#
Before continuing to Step 9, power on any connected stack members and wait until they have completely
Note
initialized.
Step 8 Write the running configuration to the startup configuration file:
Device# copy running-config startup-config
The new password is now in the startup configuration.
Step 9 You must now reconfigure the device. If the system administrator has the backup device and VLAN configuration files
available, you should use those.

Preventing Switch Stack Problems

To prevent switch stack problems, you should do the following:
• Make sure that the Device that you add to or remove from the switch stack are powered off. For all
• Press the Mode button on a stack member until the Stack mode LED is on. The last two port LEDs on
• We recommend using only one CLI session when managing the switch stack. Be careful when using
• Manually assigning stack member numbers according to the placement of the Device in the stack can
If you replace a stack member with an identical model, the new Device functions with the exact same
configuration as the replaced Device. This is also assuming the new Device is using the same member number
as the replaced Device.
Removing powered-on stack members causes the switch stack to divide (partition) into two or more switch
stacks, each with the same configuration. If you want the switch stacks to remain separate, change the IP
address or addresses of the newly created switch stacks. To recover from a partitioned switch stack, follow
these steps:
powering considerations in switch stacks, see the "Switch Installation" chapter in the hardware installation
guide.
the Device should be green. Depending on the Device model, the last two ports are either 10/100/1000
ports or small form-factor pluggable (SFP) module. If one or both of the last two port LEDs are not green,
the stack is not operating at full bandwidth.
multiple CLI sessions to the active switch . 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.
make it easier to remotely troubleshoot the switch stack. However, you need to remember that the Device
have manually assigned numbers if you add, remove, or rearrange Device later. Use the switch
current-stack-member-number renumber new-stack-member-number global configuration command
to manually assign a stack member number.
System Management Configuration Guide, Cisco IOS XE Gibraltar 16.10.x (Catalyst 9200 Switches)
Preventing Switch Stack Problems
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