802.1X Configuration; Hp Implementation Of 802.1X; Access Control Methods; Using 802.1X Authentication With Other Features - HP 5120 EI Switch Series Configuration Manual

802.1X configuration

This chapter describes how to configure 802.1X on an HP device. You can also configure the port security
feature to perform 802.1X. Port security combines and extends 802.1X and MAC authentication. It applies
to a network, for example, that requires different authentication methods for different users on a port. Port
security is beyond the scope of this chapter. It is described in the chapter ―Port security configuration.‖

HP implementation of 802.1X

Access control methods

HP implements port-based access control as defined in the 802.1X protocol, and extends the protocol to
support MAC-based access control.
 With port-based access control, once an 802.1X user passes authentication on a port, any
subsequent user can access the network through the port without authentication. When the
authenticated user logs off, all other users are logged off.
With MAC-based access control, each user is separately authenticated on a port. When a user logs

off, no other online users are affected.
For more information about the fundamentals of 802.1X, see the chapter ―802.1X fundamentals.‖

Using 802.1X authentication with other features

VLAN assignment
You can configure the authentication server to assign a VLAN for an 802.1X user that has passed
authentication. The way that the network access device handles VLANs on an 802.1X-enabled port differs
by 802.1X access control mode.
Access control
Port-based
VLAN manipulation
Assigns the VLAN to the port as the default VLAN. All subsequent 802.1X users
can access the default VLAN without authentication.
When the user logs off, the previous default VLAN restores, and all other
online users are logged off.
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