04 Try it yourself Interactive

The same frame, three devices in the middle

The four hosts from section 02, wired to one device, and A sends a frame to C. The tabs swap the device in the middle. Every step shows which ports the frame actually left on and which hosts had to look at it and throw it away, and the two counters add up across the whole run. In Switch the MAC address table is drawn below the ports and fills as the switch learns; watch the second frame leave on one port instead of three. In Router the hosts move onto two networks, because a router only exists when there is more than one.

Hub
4 hosts · one collision domain
Indigo = this host is sending. Amber = the frame arrived here. Green = the card accepted it. Rose = the card compared the destination MAC with its own and threw the frame away.
Press Next to begin. Each press advances the delivery by one step.


      

        
Collision domains–

        
Broadcast domains–

        
Hosts that accepted0

        
Hosts that discarded0

      


      

      

        
        
        
        step 0 / 0