CHAPTER 9
Configuring 802.1X
This chapter describes how to configure IEEE 802.1X port-based authentication on Cisco NX-OS devices.
This chapter includes the following sections:
• About 802.1X, on page 177
• Licensing Requirements for 802.1X, on page 183
• Prerequisites for 802.1X, on page 183
• 802.1X Guidelines and Limitations, on page 183
• Default Settings for 802.1X, on page 185
• Configuring 802.1X, on page 186
• Verifying the 802.1X Configuration, on page 205
• 802.1X Support for VXLAN EVPN, on page 205
• Monitoring 802.1X, on page 210
• Configuration Example for 802.1X, on page 210
• Additional References for 802.1X, on page 211
About 802.1X
802.1X defines a client-server based access control and authentication protocol that restricts unauthorized
clients from connecting to a LAN through publicly accessible ports. The authentication server authenticates
each client connected to a Cisco NX-OS device port.
Until the client is authenticated, 802.1X access control allows only Extensible Authentication Protocol over
LAN (EAPOL) traffic through the port to which the client is connected. After authentication is successful,
normal traffic can pass through the port.
Device Roles
With 802.1X port-based authentication, the devices in the network have specific roles.
Cisco Nexus 9000 Series NX-OS Security Configuration Guide, Release 9.x
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