Hack the Route Start free Open app Switches and VLANs
Broadcast domain
The set of devices a broadcast reaches: one network at the link layer.
ARP requests and DHCP discovers are broadcasts (to ff:ff:ff:ff:ff:ff), heard by every device in the domain.
Routers do not forward broadcasts, so each network behind a router is its own domain. VLANs split one switch into
several.