Cisco Catalyst 4500 Series Software Configuration Guide

26-8
Catalyst 4500 Series Switch, Cisco IOS Software Configuration Guide - Cisco IOS XE 3.9.xE and IOS 15.2(5)Ex
Chapter 26 Configuring Optional STP Features
Enabling PortFast Port Types
Enabling PortFast Port Types
• Configuring the PortFast Default State Globally, page 26-8
• Configuring a PortFast Edge Port on a Specified Interface, page 26-8
• Configuring a PortFast Network Port on a Specified Interface, page 26-10
Configuring the PortFast Default State Globally
To configure the default PortFast state, perform this task:
Configuring a PortFast Edge Port on a Specified Interface
Interfaces configured as edge ports immediately transition to the forwarding state, without passing
through the blocking or learning states, on linkup. To configure an edge port on a specified interface,
perform this task:
Note Because the purpose of this type of port is to minimize the time that access ports must wait for spanning
tree to converge, it is most effective when used on access ports. If you enable PortFast edge on a port
connecting to another switch, you risk creating a spanning tree loop.
Command Purpose
Step 1
Switch# configure terminal
Enters global configuration mode.
Step 1
Switch(config)# spanning-tree portfast [edge |
network | normal] default
Configures the default state for all interfaces on the
switch. You have these options:
• (Optional) edge—Configures all interfaces as edge
ports. This assumes all ports are connected to
hosts/servers.
• (Optional) network—Configures all interfaces as
spanning tree network ports. This assumes all ports
are connected to switches and bridges. Bridge
Assurance is enabled on all network ports by default.
• (Optional) normal—Configures all interfaces as
normal spanning tree ports. These ports can be
connected to any type of device.
• default—The default port type is normal.
Step 2
Switch(config)# end
Exits configuration mode.
Command Purpose
Step 1
Switch# configure terminal
Enters global configuration mode.
Step 2
Switch(config)# interface {{fastethernet |
gigabitethernet | tengigabitethernet} slot/port}
| {port-channel port_channel_number}
Specifies an interface to configure.

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