Configuring Backbonefast; Enabling Backbonefast; Displaying Backbonefast Statistics - Cisco WS-C2948G-GE-TX Configuration Manual

Chapter 8 Configuring Spanning Tree PortFast, BPDU Guard, BPDU Filter, UplinkFast, BackboneFast, and Loop Guard
The portvlancost of all bridge ports set to default value.
uplinkfast all-protocols field set to off.
uplinkfast disabled for bridge.
Console> (enable) show spantree uplinkfast
uplinkfast disabled for bridge.
Console> (enable)

Configuring BackboneFast

The following sections describe how to configure BackboneFast on the switch.

Enabling BackboneFast

Note You must enable BackboneFast on all switches in the network. BackboneFast is not supported on Token
Ring VLANs. This feature is supported for use with third-party switches.
To enable BackboneFast on the switch, perform this task in privileged mode:
Task
Step 1
Enable BackboneFast on the switch.
Step 2
Verify that BackboneFast is enabled.
This example shows how to enable BackboneFast on the switch and verify the configuration:
Console> (enable) set spantree backbonefast enable
Backbonefast enabled for all VLANs
Console> (enable) show spantree backbonefast
Backbonefast is enabled.
Console> (enable)

Displaying BackboneFast Statistics

To display BackboneFast statistics, perform this task in privileged mode:
Task
Display BackboneFast statistics.
This example shows how to display BackboneFast statistics:
Console> (enable) show spantree summary
Summary of connected spanning tree ports by vlan
Uplinkfast disabled for bridge.
Backbonefast enabled for bridge.
Vlan
----- -------- --------- -------- ---------- ----------
1
Catalyst 4500 Series, Catalyst 2948G, Catalyst 2948G-GE-TX, and Catalyst 2980G Switches Software Configuration Guide—Release 8.2GLX
78-15908-01
Blocking Listening Learning Forwarding STP Active
0 0
Command
set spantree backbonefast enable
show spantree backbonefast
Command
show spantree summary
0 1 1
Configuring BackboneFast
8-17