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Cisco IE 3000 Switch Software Configuration Guide
OL-13018-01
Chapter 10 Configuring IEEE 802.1x Port-Based Authentication
Configuring IEEE 802.1x Authentication
Configuring the Host Mode
Beginning in privileged EXEC mode, follow these steps to allow a single host (client) or multiple hosts
on an IEEE
802.1x-authorized port that has the dot1x port-control interface configuration command set
to auto. This procedure is optional.
To disable multiple hosts on the port, use the no dot1x host-mode multi-host interface configuration
command.
This example shows how to enable IEEE 802.1x authentication and to allow multiple hosts:
Switch(config)# interface gigabitethernet1/2
Switch(config-if)# dot1x port-control auto
Switch(config-if)# dot1x host-mode multi-host
Switch(config-if)# end
Configuring Periodic Re-Authentication
You can enable periodic IEEE 802.1x client re-authentication and specify how often it occurs. If you do
not specify a time period before enabling re-authentication, the number of seconds between attempts is
3600.
Command Purpose
Step 1
configure terminal Enter global configuration mode.
Step 2
radius-server vsa send authentication Configure the network access server to recognize and use vendor-specific
attributes (VSAs).
Step 3
interface interface-id Specify the port to which multiple hosts are indirectly attached, and enter
interface configuration mode.
Step 4
dot1x host-mode {single-host |
multi-host}
The keywords have these meanings:
• single-host–Allow a single host (client) on an
IEEE
802.1x-authorized port.
• multi-host–Allow multiple hosts on an IEEE 802.1x-authorized port
after a single host has been authenticated.
Make sure that the dot1x port-control interface configuration command
set is set to auto for the specified interface.
Step 5
switchport voice vlan vlan-id (Optional) Configure the voice VLAN.
Step 6
end Return to privileged EXEC mode.
Step 7
show dot1x interface interface-id Verify your entries.
Step 8
copy running-config startup-config (Optional) Save your entries in the configuration file.