9-9
Catalyst 2928 Switch Software Configuration Guide
OL-23389-01
Chapter 9 Configuring IEEE 802.1x Port-Based Authentication
Understanding IEEE 802.1x Port-Based Authentication
lists the AV pairs and when they are sent are sent by the switch:
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
at this URL:
For more information about AV pairs, see RFC 3580, “IEEE 802.1X Remote Authentication Dial In User
Service (RADIUS) Usage Guidelines.”
Using IEEE 802.1x Authentication with VLAN Assignment
The RADIUS server sends the VLAN assignment to configure the switch port. The RADIUS server
database maintains the username-to-VLAN mappings, assigning the VLAN based on the username of
the client connected to the switch port. You can use this feature to limit network access for certain users.
Table 9-1
Accounting AV Pairs
Attribute Number
AV Pair Name
START
INTERIM
STOP
Attribute[1]
User-Name
Always
Always
Always
Attribute[4]
NAS-IP-Address
Always
Always
Always
Attribute[5]
NAS-Port
Always
Always
Always
Attribute[8]
Framed-IP-Address
Never
Sometimes
1
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.
Sometimes
1
Attribute[25]
Class
Always
Always
Always
Attribute[30]
Called-Station-ID
Always
Always
Always
Attribute[31] Calling-Station-ID
Always
Always
Always
Attribute[40]
Acct-Status-Type
Always
Always
Always
Attribute[41]
Acct-Delay-Time
Always
Always
Always
Attribute[42]
Acct-Input-Octets
Never
Never
Always
Attribute[43] Acct-Output-Octets
Never
Never
Always
Attribute[44]
Acct-Session-ID
Always
Always
Always
Attribute[45] Acct-Authentic
Always
Always
Always
Attribute[46]
Acct-Session-Time
Never
Never
Always
Attribute[49] Acct-Terminate-Cause
Never
Never
Always
Attribute[61]
NAS-Port-Type
Always
Always
Always
