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8-7

Configuring Port-Based and Client-Based Access Control (802.1X)

Terminology

802.1X-Aware: Refers to a device that is running either 802.1X authenticator

software or 802.1X client software and is capable of interacting with other

devices on the basis of the IEEE 802.1X standard.

Authorized-Client VLAN: Like the Unauthorized-Client VLAN, this is a

conventional, static VLAN previously configured on the switch by the

System Administrator. The intent in using this VLAN is to provide authen-

ticated clients with network services that are not available on either the

port’s statically configured VLAN memberships or any VLAN member-

ships that may be assigned during the RADIUS authentication process.

While an 802.1X port is a member of this VLAN, the port is untagged. When

a port loses its authenticated client connection, it drops its membership

in this VLAN. Note that with multiple clients on a port, all such clients use

the same untagged, port-based VLAN membership.

Authentication Server: The entity providing an authentication service to

the switch when the switch is configured to operate as an authenticator.

In the case of a switch running 802.1X, this is a RADIUS server (unless

local authentication is used, in which case the switch performs this

function using its own username and password for authenticating a

supplicant).

Authenticator: In ProCurve applications, a switch that requires a supplicant

to provide the proper credentials before being allowed access to the

network.

CHAP (MD5): Challenge Handshake Authentication Protocol.

Client: In this application, an end-node device such as a management station,

workstation, or mobile PC linked to the switch through a point-to-point

LAN link.

Client-Based Authentication: The 802.1X extension in the switches cov-

ered in this guide. In this operation, multiple clients on the same port must

individually authenticate themselves.

Guest VLAN: See “Unauthorized-Client VLAN”.

EAP (Extensible Authentication Protocol): EAP enables network access that

supports multiple authentication methods.

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