8-14
Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide
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Release 8.1
78-15486-01
Chapter 8 Configuring Spanning Tree PortFast, BPDU Guard, BPDU Filter, UplinkFast, BackboneFast, and Loop
Configuring PortFast BPDU Filtering
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
.
.
.
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)
Disabling PortFast BPDU Filtering
To disable PortFast BPDU filtering on a switch, perform this task in privileged mode:
This example shows how to disable PortFast BPDU filtering on the switch and verify the configuration:
Console> (enable) set spantree portfast bpdu-filter disable
Spantree portfast bpdu-filter disabled on this switch.
Console> (enable) show spantree summary
Summary of connected spanning tree ports by vlan
Portfast bpdu-filter disabled 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
.
.
.
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)
Task
Command
Step 1
Disable PortFast BPDU filtering on the switch.
set spantree portfast bpdu-filter disable
Step 2
Verify the PortFast BPDU filtering setting.
show spantree summary
