Enabling Portfast Bpdu Guard - Cisco WS-C4003 - Catalyst 4000 Chassis Switch Software Configuration Manual

Configuring PortFast BPDU Guard

Enabling PortFast BPDU Guard

Note PortFast is configured on an individual port and the PortFast BPDU guard option is enabled globally.
When PortFast is disabled on a port, PortFast BPDU guard becomes inactive.
To enable PortFast BPDU guard on a nontrunking switch port, perform this task in privileged mode:
Task
Step 1 Enable PortFast BPDU guard on the switch.
Step 2
Verify the PortFast BPDU guard setting.
This example shows how to enable PortFast BPDU guard and verify the configuration:
Console > (enable) set spantree portfast bpdu-guard enable
Spantree portfast bpdu-guard enabled on this switch.
Console> (enable) show spantree summary
Root switch for vlans: none.
Portfast bpdu-guard enabled for bridge.
Uplinkfast disabled for bridge.
Backbonefast disabled for bridge.
Vlan
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152
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570
801
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850
917
999
1003
1005
Blocking Listening Learning Forwarding STP Active
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Total
Console> (enable)
Software Configuration Guide—Catalyst 4000 Family, Catalyst 2948G, Catalyst 2980G, Releases 6.3 and 6.4
8-4
Chapter 8
Blocking Listening Learning Forwarding STP Active
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Configuring Spanning Tree PortFast, UplinkFast, and BackboneFast, and Loop Guard
Command
set spantree portfast bpdu-guard enable
show spantree summary
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