Cisco WS-C4003 Software Guide - Page 136
Enabling PortFast BPDU Guard
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Configuring PortFast BPDU Guard Chapter 8 Configuring Spanning Tree PortFast, UplinkFast, and BackboneFast, and Loop 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: Step 1 Step 2 Task Enable PortFast BPDU guard on the switch. Verify the PortFast BPDU guard setting. Command set spantree portfast bpdu-guard enable show spantree summary 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 Blocking Listening Learning Forwarding STP Active 1 0 0 0 4 4 2 0 0 0 4 4 3 0 0 0 4 4 4 0 0 0 4 4 5 0 0 0 4 4 6 0 0 0 4 4 10 0 0 0 4 4 20 0 0 0 4 4 50 0 0 0 4 4 100 0 0 0 4 4 152 0 0 0 4 4 200 0 0 0 5 5 300 0 0 0 4 4 400 0 0 0 4 4 500 0 0 0 4 4 521 0 0 0 4 4 524 0 0 0 4 4 570 0 0 0 4 4 801 0 0 0 0 0 802 0 0 0 0 0 850 0 0 0 4 4 917 0 0 0 4 4 999 0 0 0 4 4 1003 0 0 0 0 0 1005 0 0 0 0 0 Blocking Listening Learning Forwarding STP Active Total 0 0 0 85 85 Console> (enable) Software Configuration Guide-Catalyst 4000 Family, Catalyst 2948G, Catalyst 2980G, Releases 6.3 and 6.4 8-4 78-12647-02
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