Cisco Catalyst 4500 Series Software Configuration Guide

49-84
Catalyst 4500 Series Switch, Cisco IOS Software Configuration Guide - Cisco IOS XE 3.9.xE and IOS 15.2(5)Ex
Chapter 49 Configuring 802.1X Port-Based Authentication
Configuring 802.1X Port-Based Authentication
This example shows how to enable 802.1X on Fast Ethernet interface 5/9 and to allow multiple hosts:
Cisco IOS Release 12.2(50)SG and later
Switch# configure terminal
Switch(config)# interface fastethernet5/9
Switch(config-if)# switchport mode access
Switch(config-if)# dot1x pae authenticator
Switch(config-if)# authentication host-mode multi-host
Switch(config-if)# authentication port-control auto
Switch(config-if)# end
Switch#
Cisco IOS Release 12.2(46)SG or earlier
Switch# configure terminal
Switch(config)# interface fastethernet5/9
Switch(config-if)# switchport mode access
Switch(config-if)# dot1x pae authenticator
Switch(config-if)# dot1x host-mode multi-host
Switch(config-if)# dot1x port-control auto
Switch(config-if)# end
Switch#
Changing the Quiet Period
When the switch cannot authenticate the client, the switch remains idle for a set period of time, and then tries again. The idle
time is determined by the quiet-period value. A failed authentication of the client might occur because the client provided an
invalid password. You can provide a faster response time to the user by entering a number smaller than the default.
To change the quiet period, perform this task:
Command Purpose
Step 1
Switch# configure terminal
Enters global configuration mode.
Step 2
Switch(config)# interface
interface-id
Enters interface configuration mode and specifies the interface to be
enabled for timeout quiet-period.
Step 3
Switch(config-if)# switchport mode
access
Specifies a nontrunking, nontagged single VLAN Layer 2 interface.
Step 4
Switch(config-if)# dot1x pae
authenticator
Enables 802.1X authentication on the port with default parameters.
Refer to the “Default 802.1X Configuration” section on page 49-27.
Step 5
Switch(config-if)# dot1x timeout
quiet-period seconds
Sets the number of seconds that the switch remains in the quiet-period
following a failed authentication exchange with the client.
To return to the default quiet-period, use the
no dot1x timeout quiet-period configuration command.
The range is 0 to 65,535 seconds; the default is 60.
Step 6
Switch(config-if)# authentication
port-control auto
Enables 802.1X authentication on the interface.
Step 7
Switch(config-if)# end
Returns to privileged EXEC mode.
Step 8
Switch# show dot1x all
Verifies your entries.
Step 9
Switch# copy running-config
startup-config
(Optional) Saves your entries in the configuration file.

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