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Dell PowerEdge FN I/O Module Configuration Guide 9.10(0.0)

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Modifying Interface STP Parameters

You can set the port cost and port priority values of interfaces in Layer 2 mode.

  • Port cost — a value that is based on the interface type. The greater the port cost, the less likely the port is selected to be a forwarding port.
  • Port priority — influences the likelihood that a port is selected to be a forwarding port in case that several ports have the same port cost.

To change the port cost or priority of an interface, use the following commands.

  • Change the port cost of an interface. INTERFACE mode spanning-tree 0 cost cost The range is from 0 to 65535. The default values are listed in Modifying Global Parameters .
  • Change the port priority of an interface. INTERFACE mode spanning-tree 0 priority priority-value The range is from 0 to 15. The default is 8.
To view the current values for interface parameters, use the show spanning-tree 0 command from EXEC privilege mode. Refer to the second example in Enabling Spanning Tree Protocol Globally .

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