Selecting Native and Alternate Stack Ports

On switches that provide both native stack ports and alternate stack ports, you can configure each logical stack port to use either the native stack port or the alternate stack port. You can configure logical stack ports to use any of the following physical stack port configurations:

Two native stack ports
Two alternate stack ports
One native stack port and on alternate stack port

When the Stacking Port Selection Control column in the following table displays Yes for a switch configuration, you can choose between native and alternate ports.

The default selection is the native stack ports.

To select between the native and alternate stack ports, use the following command:
configure stacking-support stack-port [stack-ports | all] selection [native {V80 | V160} | V320} | alternate]
To display the stacking and stacking-support configuration, use the following command:

show stacking-support

show stacking stack-ports

show stacking {node-address node_address | slot slot_number} detail
To unconfigure the stacking-support feature, use the following command:
unconfigure stacking-support

Note
Commands that contain the stacking-support keyword apply to the local switch only. This means that each switch that will use alternate stacking ports must be separately configured. When the stack is fully active, you can use the telnet slot slot-number command to log in to another node over the stack to unconfigure SummitStack-V on that node only. There is no way to intentionally or accidentally unconfigure the stacking-support options on all nodes in a stack.
Once the stacking-support feature has been configured as required on all nodes in a stack, reboot each node.
Run the show stacking stack-ports command to verify that the stack has been properly connected. Subsequently you can use the stacking commands described in the following sections to complete the stacking configuration.

Published March 2020prev | next

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