Can someone explain to me please? Thanks.

 

Supposedly, a router is a hub that splits internet connection and network computers, while a hub only networks them. But there different ways to split an internet connection with only a hub.

 

a router is Layer 3

a hub is Layer 1 (of the OSI model)

 

meaning hub is physical layer so it simply plugs in different links while router is network layer and can route the different packet

 

Hehe... I'll take a shot at an explaination too.

A hub is a stupid device - that is, it has no built-in intelligence to manage network traffic. All traffic to and from the hub just passes through it. It's fine for small networks.

A switch has some intelligence to be able to manage the network traffic. High-end switches can do lots of other things nowdays (VLAN, routing, etc.), but to keep it simple a switch essentially keeps traffic between computers physically connected to the switch on that switch. Once a network starts getting a lot of traffic, it'll need a switched network to keep from bogging down.

 

Hub
Switch
Router

 

Hub - Dumb device. Broadcasts the signal to all ports within a network.

Switch - Smarter device. Only sends the signal to the port that needs it within a network.

Router - Smartest device. Only sends the signal to the network that needs it within a group of networks.


Think of the phone system as an example.

The hub is basically like your house. Incoming calls ring to all the phones connected to the line.

A switch is like a city. A call for you only rings at your house or your extension.

A router is like a state/country/world. If you want to call someone from city A to city B, a router determines how to best get from one city to the next one.

 

I remember that from Cisco
damn I need to get back into networking.