Difference between a hub and a switch
A Hub is a networking device that allows one to connect multiple PCs to a single network. Hubs may be based on Ethernet, Firewire, or USB connections. A switch is a control unit that turns the flow of electricity on or of in a circuit. It may also be used to route information patterns in streaming electronic data sent over networks. In the context of a network, a switch is a computer networking device that connects network segments.
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Hub
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Switch
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Physical layer. Hubs are classified as Layer 1 devices per the
OSI model.
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Data Link Layer. Network switches operate at Layer 2 of the OSI
model.
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Hubs always perform frame flooding; may be unicast, multicast or
broadcast
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First broadcast; then unicast & multicast as needed.
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4/12 ports
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Switch is multi port Bridge. 24/48 ports
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A network hub cannot learn or store MAC address.
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A network switch stores MAC addresses in a lookup table.
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Passive Device (Without Software)
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Active Device (With Software) & Networking device
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Half duplex
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Full duplex
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Hub has one Broadcast Domain.
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Switch has one broadcast domain [unless VLAN implemented]
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LAN
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LAN
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Electrical signal or bits
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Frame (L2 Switch) Frame & Packet (L3 switch)
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To connect a network of personal computers together, they can be
joined through a central hub.
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Allow to connect multiple device and port can be manage, Vlan
can create security also can apply
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Collisions occur commonly in setups using hubs.
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No collisions occur in a full-duplex switch.
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