Configuring and Verifying BackboneFast

Configuring and Verifying BackboneFast
Configuring BackboneFast sounds difficult, but it is really quite easy. You enable it with the set
spantree backbonefast command, as you can see in the following example:
Terry_4000> (enable) set spantree backbonefast
Usage: set spantree backbonefast <enable|disable>
Terry_4000> (enable) set spantree backbonefast enable
Backbonefast enabled for all VLANs
Notice in the preceding switch output that BackboneFast is enabled for all VLANs, and it
must be enabled on all switches in your network to function. To verify that it is running on a
switch, use the show spantree backbonefast command:
Terry_4000> (enable) show spantree backbonefast
Backbonefast is enabled.
Terry_4000> (enable)
The preceding command shows that BackboneFast is enabled. That’s all there is to it. It is a
little different with the IOS-based switches:
Terry_2950(config)#spanning-tree ?
backbonefast Enable BackboneFast Feature
Using Redundant Links with STP 533
etherchannel Spanning tree etherchannel specific configuration
extend Spanning Tree 802.1t extensions
loopguard Spanning tree loopguard options
mode Spanning tree operating mode
pathcost Spanning tree pathcost options
portfast Spanning tree portfast options
uplinkfast Enable UplinkFast Feature
vlan VLAN Switch Spanning Tree
Terry_2950(config)#spanning-tree backbonefast ?
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