Enable 802.1X Authentication On The Switch - HP 3500yl Series Access Security Manual

Configuring Port-Based and User-Based Access Control (802.1X)
Configuring Switch Ports as 802.1X Authenticators
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[key < server-specific key-string >]
Optional. Specifies an encryption key for use during
authentication (or accounting) sessions with the spec-
ified server. This key must match the key used on the
RADIUS server. Use this option only if the specified
server requires a different key than configured for the
global encryption key. The tilde (~) character is allowed
in the string. It is not backward compatible; the "~"
character is lost if you use a software version that does
not support the "~" character.
Syntax: radius-server key < global key-string >
Specifies the global encryption key the switch uses for
sessions with servers for which the switch does not have
a server-specific key. This key is optional if all RADIUS
server addresses configured in the switch include a
server- specific encryption key. The tilde (~) character
is allowed in the string, for example, radius-server key
hp~switch. It is not backward compatible; the "~" char-
acter is lost if you use a software version that does not
support the "~" character.
Default: Null
The no form of the command removes the global encryp-
tion key.

5. Enable 802.1X Authentication on the Switch

After configuring 802.1X authentication as described in the preceding four
sections, activate it with this command:
Syntax: aaa port-access authenticator active
Activates 802.1X port-access on ports you have configured
as authenticators.