Configuring BackboneFast
How to configure BackboneFast

BackboneFast must be enabled on all switches in the Spanning Tree instance. BackboneFast will interoperate with third-party switches. However it is a Cisco proprietary feature and it is not supported on Token Ring VLANs.

Configure BackboneFast
To enable or disable BackboneFast, use this command:

Switch(config)#[no] spanning-tree backbonefast

Verify BackboneFast
To verify BackboneFast configuration, use this command:

Switch#show spanning-tree backbonefast