Specifications

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Catalyst 2950 and Catalyst 2955 Switch Command Reference
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Chapter 2 Cisco IOS Commands
spanning-tree uplinkfast
If you set the max-update-rate to 0, station-learning frames are not generated, so the spanning-tree
topology converges more slowly after a loss of connectivity.
Examples This example shows how to enable UplinkFast:
Switch(config)# spanning-tree uplinkfast
You can verify your setting by entering the show spanning-tree summary privileged EXEC command.
Related Commands Command Description
show spanning-tree summary Displays a summary of the spanning-tree port states.
spanning-tree stack-port Enables cross-stack UplinkFast (CSUF) on an interface and
accelerates the choice of a new root port when a link or switch
fails or when spanning tree reconfigures itself.
spanning-tree vlan root primary Forces this switch to be the root switch.