Configuring 802.1X; Hp Implementation Of 802.1X; Access Control Methods; Using 802.1X Authentication With Other Features - HP 6125G Configuration Manual

Configuring 802.1X

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 that requires different authentication methods
for different users on a port. Port security is beyond the scope of this chapter. It is described in "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.
Port-based access control—Once an 802.1X user passes authentication on a port, any subsequent
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user can access the network through the port without authentication. When the authenticated user
logs off, all other users are logged off.
MAC-based access control—Each user is separately authenticated on a port. When a user logs off,
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no other online users are affected.

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.
For more information about VLAN configuration and MAC-based VLAN, see Layer 2
Configuration Guide.
Access control
Port-based
MAC-based
VLAN manipulation
Assigns the VLAN to the port as the port VLAN ID (PVID). All subsequent 802.1X users
can access the port VLAN without authentication.
When the user logs off, the previous PVID restores, and all other online users are
logged off.
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If the port is a hybrid port with MAC-based VLAN enabled, maps the MAC address
of each user to the VLAN assigned by the authentication server. The PVID of the port
does not change. When a user logs off, the MAC-to-VLAN mapping for the user is
removed.
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If the port is an access, trunk, or MAC-based VLAN disabled hybrid port, assigns
the first authenticated user's VLAN to the port as the PVID. If a different VLAN is
assigned to a subsequent user, the user cannot pass the authentication. To avoid the
authentication failure of subsequent users, be sure to assign the same VLAN to all
802.1X users on these ports.
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LAN Switching
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