13-14
Cisco IE 2000 Switch Software Configuration Guide
OL-25866-01
Chapter 13 Configuring IEEE 802.1x Port-Based Authentication
Information About Configuring IEEE 802.1x Port-Based Authentication
You can view the AV pairs that are being sent by the switch by entering the debug radius accounting
privileged EXEC command. For more information about this command, see the Cisco IOS Debug
Command Reference, Release 12.2.
For more information about AV pairs, see RFC 3580, “802.1x Remote Authentication Dial In User Service
(RADIUS) Usage Guidelines.”
802.1x Readiness Check
The 802.1x readiness check monitors 802.1x activity on all the switch ports and displays information
about the devices connected to the ports that support 802.1x. You can use this feature to determine if the
devices connected to the switch ports are 802.1x-capable. You use an alternate authentication such as
MAC authentication bypass or web authentication for the devices that do not support 802.1x
functionality.
This feature only works if the supplicant on the client supports a query with the NOTIFY EAP
notification packet. The client must respond within the 802.1x timeout value.
Follow these guidelines to enable the readiness check on the switch:
• The readiness check is typically used before 802.1x is enabled on the switch.
• The 802.1x readiness check is allowed on all ports that can be configured for 802.1x. The readi ness
check is not available on a port that is configured as dot1x force-unauthorized.
• If you use the dot1x test eapol-capable privileged EXEC command without specifying an interface,
all the ports on the switch stack are tested.
• When you configure the dot1x test eapol-capable command on an 802.1x-enabled port, and the link
comes up, the port queries the connected client about its 802.1x capability. When the client respon ds
with a notification packet, it is 802.1x-capable. A syslog message is generated if the client responds
within the timeout period. If the client does not respond to the query, the client is
not 802.1x-capable. No syslog message is generated.
• The readiness check can be sent on a port that handles multiple hosts (for example, a PC that is
connected to an IP phone). A syslog message is generated for each of the clients that respond to the
readiness check within the timer period.
For information on configuring the switch for the 802.1x readiness check, see the “Configuring 802.1x
Readiness Check” section on page 13-36.
Attribute[43] Acct-Output-Octets Never Always Always
Attribute[44] Acct-Session-ID Always Always Always
Attribute[45] Acct-Authentic Always Always Always
Attribute[46] Acct-Session-Time Never Always Always
Attribute[49] Acct-Terminate-Cause Never Never Always
Attribute[61] NAS-Port-Type Always Always Always
1. The Framed-IP-Address AV pair is sent only if a valid Dynamic Host Control Protocol (DHCP) binding
exists for the host in the DHCP snooping bindings table.
Table 13-2 Accounting AV Pairs (continued)
Attribute Number AV Pair Name START INTERIM STOP