Overview Trusted Device Access

To protect the core network from being illegally accessed, the edge device of the core network must have high security. This requires that other network devices connected to the edge device of the core network must be a clear trusted device. The trusted device access function is based on a mature 802.1X protocol to prevent unauthorized devices from accessing the core network. The basic network topology, as shown in Figure 7-1, includes three entities: the Access Device, the Authentication System, and the Authentication Server System.

Figure 14-1 The access topology diagram of the trusted device

The specific method of the trusted device access is as follows:

• Enable the access function of the trusted device on the access device, and configure the required identity credentials and related parameters on the access device and authentication server.
• Enable the 802.1X device authentication function on the authentication device, the port connected to the access device becomes the controlled port waiting for the access of the access device.
• The access device automatically initiates the 802.1X authentication after connecting the authentication device. After passing the 802.1X authentication, the authentication device opens the controlled port, and the access device is connected to the network successfully.
• The access device regularly performs the keepalive authentication for the authentication device by the set the keepalive period of the authentication device.