1-2Figure 1-1 Network diagram for HABP applicationInternetSwitch B Switch CAuthenticatorSupplicantSwitch ASupplicant SupplicantSwitch D Switch EAuthenticationserverHABP is a link layer protocol that works above the MAC layer. It is built on the client-server model.Generally, the HABP server is assumed by the management device (such as Switch A in the aboveexample), and the attached switches function as the HABP clients, such as Switch B through Switch Ein the example. No device can function as both an HABP server and a client at the same time. Typically,the HABP server sends HABP requests to all its clients periodically to collect their MAC addresses, andthe clients respond to the requests. After the server learns the MAC addresses of all the clients, itregisters the MAC addresses as HABP entries. Then, link layer frames exchanged between the clientscan bypass the 802.1X authentication on ports of the server without affecting the normal operation ofthe whole network. All HABP packets must travel in a VLAN, which is called the management VLAN.Communication between the HABP server and the HABP clients is implemented through themanagement VLAN.Configuring HABPComplete the following tasks to configure HABP:z Configuring the HABP Serverz Configuring an HABP ClientConfiguring the HABP ServerWith the HABP server function enabled, the administrative device starts to send HABP requests to theattached switches. The HABP responses include the MAC addresses of the attached switches. Thismakes it possible for the administrative device to manage the attached switches.You can configure the interval of sending HABP requests on the administrative device.Follow these steps to configure an HABP server:To do… Use the command… RemarksEnter system view system-view —Enable HABP habp enable OptionalEnabled by default
