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18. Provide connectivity between two network devices

uplink-fast

Reduce the time for network convergence
Should not be run on the root bridge because it is preventing it to become a root bridge.
Create an uplinkfast group of ports that are redundant and currently blocked.
If the forwarding port fails, uplinkfast will immediately move one of the blocked ports into a forwarding state.
Failover time is approximately 3 seconds.

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