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

Configuring Switch Ports as 802.1X Authenticators

4. Enter the RADIUS Host IP Address(es)

If you select either eap-radiusor chap-radiusfor the authentication method, configure the switch to use 1, 2, or 3 RADIUS servers for authentication. The following syntax shows the basic commands. For coverage of all commands related to RADIUS server configuration, refer to chapter 5, “RADIUS Authen­ tication and Accounting”.

Syntax: radius host < ip-address>

Adds a server to the RADIUS configuration.

[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.

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.

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.

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