Cisco Catalyst 2975 Software Configuration Manual page 304

Configuring 802.1x Authentication
Command
Step 4
radius-server host
ip-address [acct-port
udp-port] [auth-port
udp-port] [test username
name [idle-time time]
[ignore-acct-port]
[ignore-auth-port]] [key
string]
Step 5
dot1x critical {eapol |
recovery delay milliseconds}
Step 6 interface interface-id
Step 7 authentication event server
dead action [authorize |
reinitialize] vlan vlan-id
Catalyst 2975 Switch Software Configuration Guide
10-54
Purpose
(Optional) Configure the RADIUS server parameters by using these keywords:
• acct-port udp-port—Specify the UDP port for the RADIUS accounting server.
The range for the UDP port number is from 0 to 65536. The default is 1646.
• auth-port udp-port—Specify the UDP port for the RADIUS authentication
server. The range for the UDP port number is from 0 to 65536. The default is
1645.
You should configure the UDP port for the RADIUS accounting server and
Note
the UDP port for the RADIUS authentication server to nondefault values.
test username name—Enable automated testing of the RADIUS server status,
•
and specify the username to be used.
idle-time time—Set the interval of time in minutes after which the switch sends
•
test packets to the server. The range is from 1 to 35791 minutes. The default is
60 minutes (1 hour).
ignore-acct-port—Disable testing on the RADIUS-server accounting port.
•
ignore-auth-port—Disable testing on the RADIUS-server authentication port.
•
key string—Specify the authentication and encryption key for all RADIUS
•
communication between the switch and the RADIUS daemon.
Always configure the key as the last item in the radius-server host
Note
command syntax because leading spaces are ignored, but spaces within and
at the end of the key are used. If you use spaces in the key, do not enclose
the key in quotation marks unless the quotation marks are part of the key.
This key must match the encryption used on the RADIUS daemon.
You can also configure the authentication and encryption key by using the
radius-server key {0 string | 7 string | string} global configuration command.
(Optional) Configure the parameters for inaccessible authentication bypass:
eapol—Specify that the switch sends an EAPOL-Success message when the switch
successfully authenticates the critical port.
recovery delay milliseconds—Set the recovery delay period during which the
switch waits to re-initialize a critical port when a RADIUS server that was
unavailable becomes available. The range is from 1 to 10000 milliseconds. The
default is 1000 milliseconds (a port can be re-initialized every second).
Specify the port to be configured, and enter interface configuration mode. For the
supported port types, see the
section on page 10-35.
Use these keywords to move hosts on the port if the RADIUS server is unreachable:
authorize–Move any new hosts trying to authenticate to the user-specified
•
critical VLAN.
reinitialize–Move all authorized hosts on the port to the user-specified critical
•
VLAN.
Chapter 10 Configuring IEEE 802.1x Port-Based Authentication
"802.1x Authentication Configuration Guidelines"
OL-19720-02