Eli5 Switch, Router and Hub
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To quote another comment on a similar post on this sub:
Router: Directs network traffic based on destination
addresses and preset rules. These are usually situated
between gateways/modems and switches
Switch: These devices simply connect multiple devices
together, sort of like a splitter. Although managed switches
can do quite a bit more, such as create VLAN’s, which can
help organize and protect network traffic
Hub: These are essentially the dumb versions of switches
They function like repeaters, so when a computer talks on
the network, the hub will broadcast that message to every
port on the hub. If the message reaches the target PC, then
that PC will do the same. This is a very inefficient method,
which is why hubs are obsolete. Switches contain memory,
so they remember which PC is on which port, and will direct
messages to the correct port without having to constantly
broadcast to all ports.
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