Local Broadcast Domain¶
The broadcast domain represents a network segment where all the nodes can reach each other by sending layer 2 broadcast frames. For a network interface, the local broadcast domain is the broadcast domain of that interface.
Hosts belonging to the local broadcast domain of a network interface are marked with the icon. For such hosts, the MAC address seen by ntopng corresponds to the actual device MAC address, as opposed to non local broadcast domain hosts, whose MAC address corresponds to the MAC address of the router towards the network where they are located.
Local broadcast domain hosts can be usually identified by MAC address, in order to correctly serialize them in a DHCP network. This can be set from the interface configuration settings.