Cisco Catalyst 3750-X Software Configuration Manual page 358

Configuring 802.1x Authentication
Command
Step 7
authentication host-mode
multi-domain
Step 8
authentication linksec policy
must-secure
Step 9
authentication port-control auto
Step 10
authentication violation protect
Step 11 mka policy policy name
Step 12
dot1x pae authenticator
Step 13 spanning-tree portfast
Step 14
end
Step 15 show authentication session interface
interface-id
Step 16 copy running-config startup-config
This is an example of configuring and verifying MACsec on an interface:
Switch(config)# interface GigabitEthernet1/0/25
Switch(config-if)# switchport access vlan 10
Switch(config-if)# switchport mode access
Switch(config-if)# macsec
Switch(config-if)# authentication event linksec fail action authorize vlan 2
Switch(config-if)# authentication host-mode multi-domain
Switch(config-if)# authentication linksec policy must-secure
Switch(config-if)# authentication port-control auto
Switch(config-if)# authentication violation protect
Switch(config-if)# mka policy replay-policy
Switch(config-if)# dot1x pae authenticator
Switch(config-if)# spanning-tree portfast
Switch(config-if)# end
Switch# show authentication sessions interface gigabitethernet1/0/25
Interface: GigabitEthernet1/0/25
MAC Address: 001b.2140.ec3c
IP Address: 1.1.1.103
User-Name: ms1
Status: Authz Success
Domain: DATA
Security Policy: Must Secure ß--- New
Security Status: Secured ß--- New
Oper host mode: multi-domain
Catalyst 3750-X and 3560-X Switch Software Configuration Guide
11-68
Chapter 11
Purpose
Configure authentication manager mode on the port to allow both a host
and a voice device to be authenticated on the 802.1x-authorized port. If
not configured, the default host mode is single.
Set the LinkSec security policy to secure the session with MACsec if the
peer is available. If not set, the default is should secure.
Enable 802.1x authentication on the port. The port changes to the
authorized or unauthorized state based on the authentication exchange
between the switch and the client
Configure the port to drop unexpected incoming MAC addresses when a
new device connects to a port or when a device connects to a port after the
maximum number of devices are connected to that port. If not configured,
the default is to shut down the port.
Apply an existing MKA protocol policy to the interface, and enable MKA
on the interface. If no MKA policy was configured (by entering the mka
policy global configuration command), you must apply the MKA default
policy to the interface by entering the mka default-policy interface
configuration command.
Configure the port as an 802.1x port access entity (PAE) authenticator.
Enable spanning tree Port Fast on the interface in all its associated
VLANs. When Port Fast feature is enabled, the interface changes directly
from a blocking state to a forwarding state without making the
intermediate spanning-tree state changes.
Return to privileged EXEC mode.
Verify the authorized session security status.
(Optional) Save your entries in the configuration file.
Configuring IEEE 802.1x Port-Based Authentication
OL-21521-01