Setting the 802.1X operational mode

Last Updated : Aug 28, 2026 |
Prolog information
The IEEE 802.1X standard provides specifications for secure layer 2 network access. Phones implement 802.1X supplicant in unicast, multicast, and pass-through modes, and proxy logoff for the attached device on the PC port. You can use this procedure to set the operational modes.
Before you begin
  • Make the correct RADIUS server configuration and layer-2 network switch for 802.1X authentication.
  • If you require EAP-TLS, pre-install the required identity and trusted certificates on the phone. If you require EAP-PEAP, pre-install the required trusted certificate on the phone. If you require EAP-TTLS, pre-install the required identity and trusted certificates on the phone. For more information on certificates, see Certificate management.
  • You can use the DOT1XSTAT parameter to enable 802.1X with the phone settings file, phone administration menu, or web interface. Ensure to align this change with a layer-2 switch and the RADIUS server. You can perform this step in a staging environment before deploying the phones for production use.
Other:
Improper configuration of this feature can result in a site-wide outage of IP phones.
  1. Press Main MenuAdministration.
  2. In the Access code field, enter the admin menu password.
  3. Press Enter.
  4. Select 802.1X.
    STEP RESULT:
    The phone displays the following settings:
    • Supplicant
    • Pass-thru mode
    • Authentication method
    • Username
    • Password
    • TLS identity
  5. Select the setting that you want to change.
  6. Press the Toggle soft key or the Left and Right Arrow keys to cycle through the following settings:
    • For the 802.1X supplicant:
      • Disabled
      • Unicast
      • Multicast
    • For the Pass-thru mode:
      • Enabled
      • Enabled logoff
      • Disabled
    • For the Authentication method:
      • MD5
      • TLS
      • TTLS
      • PEAP
      When you choose a password-based authentication method, configure the following if required:
      • Username
      • Password
  7. Press Save.