Enabling Portfast Edge Bpdu Filtering - Cisco Catalyst 4500 Series Software Configuration Manual

Chapter 26 Configuring Optional STP Features
If the port configuration is not set to default, then the PortFast edge configuration does not affect PortFast
edge BPDU filtering.
PortFast edge BPDU filtering allows access ports to move directly to the forwarding state as soon as the
end hosts are connected.
Table 26-1
Per-Port Configuration
Default
Default
Default
Disable
Enable
1. The port transmits at least 10 BPDUs. If this port receives any BPDUs, then PortFast edge and PortFast edge BPDU filtering

Enabling PortFast Edge BPDU Filtering

Enabling PortFast Edge BPDU Filtering Globally
Command
Step 1
Switch# configure terminal
Step 2
Switch(config)# spanning-tree portfast edge
bpdufilter default
Step 3
Switch# show spanning-tree summary totals
This example shows how to enable PortFast edge BPDU filtering as default on all edge ports and verify
the configuration in PVST+ mode :
Switch(config)# spanning-tree portfast edge bpdufilter default
Switch(config)# exit
Switch# show spanning-tree summary totals
Root bridge for: Bridge VLAN0025
EtherChannel misconfiguration guard is enabled
Extended system ID
PortFast Edge BPDU Guard Default
Portfast Edge BPDU Filter Default
Portfast Default
Bridge Assurance
Loopguard
UplinkFast
BackboneFast
Pathcost method used is long
Name
Table 26-1
PortFast Edge BPDU Filtering Port Configurations
Global Configuration
Enable
Enable
Disable
Not applicable
Not applicable
are disabled.
Blocking Listening Learning Forwarding STP Active
Catalyst 4500 Series Switch, Cisco IOS Software Configuration Guide - Cisco IOS XE 3.9.xE and IOS 15.2(5)Ex
lists all the possible PortFast edge BPDU filtering combinations.
PortFast Edge State
Enable
Disable
Not applicable
Not applicable
Not applicable
Purpose
Enters global configuration mode.
Enables BPDU filtering globally by default on all edge
ports of the switch. Use the no prefix to disable BPDU
filtering by default on all edge ports of the switch.
Verifies the BPDU configuration.
is enabled
is disabled
is enabled
is edge
is enabled
is disabled
is disabled
is disabled
Enabling PortFast Edge BPDU Filtering
PortFast Edge BPDU Filtering
State
1
Enable
Disable
Disable
Disable
Enable
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