Cisco WS-SUP32-GE-3B Software Configuration Guide - Page 284

Enabling PortFast BPDU Filtering Chapter 18 Configuring Optional STP Features Router# show spanning-tree interface fastEthernet 4/4 detail Port 196 (FastEthernet4/4) of VLAN0010 is forwarding Port path cost 1000, Port priority 160, Port Identifier 160.196. Designated root has priority 32768, address 00d0.00b8.140a Designated bridge has priority 32768, address 00d0.00b8.140a Designated port id is 160.196, designated path cost 0 Timers:message age 0, forward delay 0, hold 0 Number of transitions to forwarding state:1 The port is in the portfast mode by portfast trunk configuration Link type is point-to-point by default BPDU:sent 30, received 0 Router# Enabling PortFast BPDU Filtering These sections describe how to configure PortFast BPDU filtering. To enable PortFast BPDU filtering globally, perform this task: Step 1 Step 2 Command Router(config)# spanning-tree portfast bpdufilter default Router# show spanning-tree summary totals Purpose Enables BPDU filtering globally on the switch. Verifies the configuration. BPDU filtering is set to default on each port. This example shows how to enable PortFast BPDU filtering on the port and verify the configuration in PVST+ mode: Note For PVST+ information, see Chapter 17, "Configuring STP and MST." Router(config)# spanning-tree portfast bpdufilter default Router(config)# ^Z Router# show spanning-tree summary totals Root bridge for:VLAN0010 EtherChannel misconfiguration guard is enabled Extended system ID is disabled Portfast is enabled by default PortFast BPDU Guard is disabled by default Portfast BPDU Filter is enabled by default Loopguard is disabled by default UplinkFast is disabled BackboneFast is disabled Pathcost method used is long Name Blocking Listening Learning Forwarding STP Active 2 vlans 0 0 0 3 3 Router# 18-10 Catalyst Supervisor Engine 32 PISA Cisco IOS Software Configuration Guide, Release 12.2ZY OL-11439-03