Cisco Catalyst 4500 Series Command Reference Guide

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Catalyst 4500 Series Switch Cisco IOS Command Reference—Release IOS XE 3.4.0SG and IOS 15.1(2)SG)
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Chapter 2 Cisco IOS Commands for the Catalyst 4500 Series Switches
spanning-tree portfast (interface configuration mode)
• no spanning-tree portfast—This command implicitly enables PortFast if the spanning-tree
portfast default command is defined in global configuration and if the port is not a trunk port. If
you do not configure PortFast globally, the no spanning-tree portfast command is equivalent to the
spanning-tree portfast disable command.
Examples This example shows how to enable PortFast mode:
Switch(config-if)# spanning-tree portfast
Switch(config-if)
Related Commands Command Description
spanning-tree cost Calculates the path cost of STP on an interface.
spanning-tree portfast default Enables PortFast by default on all access ports.
spanning-tree port-priority Prioritizes an interface when two bridges compete for
position as the root bridge.
spanning-tree uplinkfast Enables the UplinkFast feature.
spanning-tree vlan Configures STP on a per-VLAN basis.
show spanning-tree Displays spanning-tree state information.

Cisco Catalyst 4500 Series Specifications

General

Series	Catalyst 4500 Series
Category	Switch
Layer Support	Layer 2, Layer 3
Form Factor	Modular chassis
Stackable	No
Chassis Slots	3, 6, 7, 10
Power Supply Options	AC, DC
Redundancy	Power supply, Supervisor engine
Network Management	Cisco IOS Software CLI, SNMP, Cisco Prime Infrastructure
Features	Security, QoS
Port Density	Up to 384 ports per chassis
Security Features	802.1X, ACLs, DHCP Snooping, Dynamic ARP Inspection, IP Source Guard
Supervisor Engine	8-E