On a network where networking is fixed, after MAC address learning is disabled on an interface of a device, other servers or terminals cannot communicate with this device through this interface, improving the device security.
As shown in Figure 1
, the device named CE connects to the server through an interface. The network administrator can configure the interface to allow packets with certain MAC addresses to pass, in order to improve device security by configuring the server's static MAC address on this interface, disabling MAC address learning on this interface, and specifying the action as discard. In this way, other servers or terminals cannot communicate with the device named CE through this interface, improving network security and stability.
Figure 1 Networking diagram for disabling MAC address learning
Before enabling MAC address learning, complete the following task, connect interfaces and set their physical parameters to ensure that the physical status of the interfaces is Up.