802.1X is an IEEE standard that defines a client and server-based access control and authentication protocol that restricts unauthorized clients from connecting to a Local Area Network (LAN) through publicly accessible ports. The authentication server authenticates each client connected to a switch port and assigns the port to a Virtual Local Area Network (VLAN) before making available any resources offered by the switch or the LAN. 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.
802.1X authentication is particularly useful in larger networks since certificates and user credentials can be deployed for use in authenticating to the network. This provides security, scalability, ease of management, and ease of use.
The image below displays a network that have configured the devices according to the specific roles.
This article aims to show you how to check the state of the port authentication on the Cisco IP Phone 8800 Series Multiplatform Phones. It assumes that you have already configured the port authentication settings on the switch. For instructions, click here.
Step 1. On the phone, press the Applications button.
Step 2. Navigate to Network configuration using the Navigation cluster button.
Step 3. Choose Ethernet configuration.
Step 4. Choose 802.1X authentication.
Step 5. Verify that Device authentication is On.
Step 6. Choose Transaction status.
The status can be any of the following:
Note: In this example, the Transaction status is Authenticated, and the Protocol is None.
You should now have verified the 802.1X state of the phone.
Revision | Publish Date | Comments |
---|---|---|
1.0 |
12-Dec-2018 |
Initial Release |