Cisco CATALYST 2960 User Manual

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Catalyst 2960 and 2960-S Switches Software Configuration Guide, Release 15.0(1)SE
OL-26520-01
Chapter 10 Configuring IEEE 802.1x Port-Based Authentication
Configuring 802.1x Authentication
You also need to configure some settings on the RADIUS server. These settings include the IP address
of the switch and the key string to be shared by both the server and the switch. For more information,
see the RADIUS server documentation.
Configuring the Host Mode
Beginning in privileged EXEC mode, follow these steps to allow a single host (client) or multiple hosts
on an 802.1x-authorized port that has the authentication port-control interface configuration command
set to auto. Use the multi-domain keyword to configure multidomain authentication (MDA) to enable
authentication of both a host and a voice device, such as an IP phone (Cisco or non-Cisco) on the same
switch port.
This procedure is optional.
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
authentication host-mode [multi-auth |
multi-domain | multi-host |
single-host]
The keywords have these meanings:
• multi-auth–Allow one client on the voice VLAN and multiple
authenticated clients on the data VLAN. Each host is individually
authenticated.
Note The multi-auth keyword is only available with the
authentication host-mode command.
• 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 802.1x-authorized port.
Note You must configure the voice VLAN for the IP phone when the
host mode is set to multi-domain. For more information, see
Chapter 15, “Configuring Voice VLAN.”
• single-host–Allow a single host (client) on an 802.1x-authorized
port.
Make sure that the authentication 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 authentication interface
interface-id
Verify your entries.
Step 8
copy running-config startup-config (Optional) Save your entries in the configuration file.

Cisco CATALYST 2960 Specifications

General

Manageable	Yes
Stacking	No
Model	Catalyst 2960 Series Switches
Power over Ethernet (PoE)	Available on some models (IEEE 802.3af)
VLANs	255 active VLANs
Features	QoS
Operating Temperature	32 to 113°F (0 to 45°C)
Relative Humidity	10% to 85% non-condensing
Power Consumption	Varies by model (30W to 400W)