Consolidated Platform Configuration Guide, Cisco Ios Release 15.2(4)E (Catalyst 2960-X Switches - Cisco Catalyst 2960 series Configuration Manual

SUMMARY STEPS
1. configure terminal
2. interface interface-id
3. authentication host-mode [multi-auth | multi-domain | multi-host | single-host]
4. end
DETAILED STEPS
Command or Action
Step 1
configure terminal
Example:
Switch# configure terminal
Step 2 interface interface-id
Example:
Switch(config)# interface
gigabitethernet2/0/1
Step 3 authentication host-mode [multi-auth |
multi-domain | multi-host | single-host]
Example:
Switch(config-if)# authentication
host-mode multi-host
Step 4
end
Example:
Switch(config-if)# end
Purpose
Enters the global configuration mode.
Specifies the port to which multiple hosts are indirectly attached, and enter
interface configuration mode.
Allows multiple hosts (clients) on an 802.1x-authorized port.
The keywords have these meanings:
• multi-auth–Allow one client on the voice VLAN and multiple
authenticated clients on the data VLAN.
Note
• multi-host–Allow multiple hosts on an 802.1x-authorized port after a
single host has been authenticated.
• multi-domain–Allow both a host and a voice device, such as an IP
phone (Cisco or non-Cisco), to be authenticated on an
IEEE 802.1x-authorized port.
Note
Make sure that the authentication port-control interface configuration
command is set to auto for the specified interface.
Returns to privileged EXEC mode.

Consolidated Platform Configuration Guide, Cisco IOS Release 15.2(4)E (Catalyst 2960-X Switches)

How to Configure 802.1x Port-Based Authentication
The multi-auth keyword is only available with the
authentication host-mode command.
You must configure the voice VLAN for the IP phone when
the host mode is set to multi-domain.
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