Disabling Portfast Bpdu Guard - Cisco WS-C2950SX-48-SI Configuration Manual

Configuring PortFast BPDU Guard
This example shows how to enable PortFast BPDU guard on module 6 port 1, and verify the
configuration in the Per VLAN Spanning Tree + (PVST+) mode:
Console> (enable) set spantree portfast bpdu-guard 6/1 enable
Spantree port
Console> (enable)
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
----- -------- --------- -------- ---------- ----------
1
2
3
4
5
6
10
20
.
.
.
999
1003
1005
----- -------- --------- -------- ---------- ----------
Total
Console> (enable)

Disabling PortFast BPDU Guard

To disable PortFast BPDU guard, perform this task in privileged mode:
Task
Step 1
Disable PortFast BPDU guard on the switch.
Step 2 Verify the PortFast BPDU guard setting.
This example shows how to disable PortFast BPDU guard on the switch and verify the configuration:
Console> (enable) set spantree portfast bpdu-guard disable
Spantree portfast bpdu-guard disabled on this switch.
Console> (enable) show spantree summary
Summary of connected spanning tree ports by vlan
Portfast bpdu-guard disabled for bridge.
Uplinkfast disabled for bridge.
Backbonefast disabled for bridge.
Vlan
----- -------- --------- -------- ---------- ----------
1
2
Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide
8-12
Chapter 8 Configuring Spanning Tree PortFast, BPDU Guard, BPDU Filter, UplinkFast, BackboneFast, and Loop
6/1 bpdu guard enabled.
Blocking Listening Learning Forwarding STP Active
0 0
0 0
0 0
0 0
0 0
0 0
0 0
0 0
0 0
0 0
0 0
Blocking Listening Learning Forwarding STP Active
0 0
Blocking Listening Learning Forwarding STP Active
0 0
0 0
0 4 4
0 4 4
0 4 4
0 4 4
0 4 4
0 4 4
0 4 4
0 4 4
0 4 4
0 0 0
0 0 0
0 85 85
Command
set spantree portfast bpdu-guard mod/port
[disable | enable | default]
show spantree summary
0 4 4
0 4 4
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Release 8.1
78-15486-01