Administrator Guide

Switch Management Commands 2274
User Guidelines
This command must be used with caution, as disabling a stack port causes
the stack to attempt to reconverge. Ensure that the stack is in an active ring
topology in order to avoid a stack split. Check the stack ports for errors and
also verify that NSF is synced before shutting down any stacking links.
Application messages will appear in the logs during stack convergence.
This command persists across reboots, therefore, administrators should use
this command with caution during stack upgrade procedures.
Example
console(config-stack)#stack-port tengigabitethernet 1/2/1 shutdown
Disabling a stack port will cause the stack to attempt to re-converge.
Application messages will appear in the logs during stack convergence.
Before shutting down a stack link, please ensure that your stack is in an
active ring topology in order to avoid a stack split. Continue? (y/n)
console(config-stack)#no stack-port twentygigbitethernet 1/0/1 shutdown
standby
Use the standby command to configure the standby unit in the stack. This
unit comes up as the master when the stack failover occurs. Use the no form
of this command to reset to default, in which case, a standby is automatically
selected from the existing stack units if there no preconfiguration.
Syntax
standby unit
no standby
• unit — Valid unit number in the stack. (Range: 1–12 maximum (less on
stacks with a restricted stack size, for example, AdvLite). The range is
limited to the number of units available on the stack.)
Default Configuration
The default configuration is to allow the software to automatically select a
standby unit.