NETWORK HUB & BRIDGE

 

NETWORK HUB

Hubs were a common network infrastructure device used for local area network connectivity but network switches are rapidly  replacing hub. These  day is vary difficult to spot network hub functioning  in live local area network. Hubs are designed to a work with twisted pair


cabling and  normally  used RJ45   jack to connect the device.Network device are  attached to the hub by individual cable. Hubs usually come in different shape and different numbers of ports.

Hubs are considered to operate  a physical layer of OSI model .  An  8 port hub show below

NETWORK BRIDGE

A Bridge is a network device that typically operates  at the data link layer of the OSI  modal. A bridge or switch performs the its job by examining the data link layer data packet and forwarding the packet to other devices based on layer 2 addresses.Both switches and bridges


function using data link layer addressing system,also know as MAC addresses.

Bridge has only few ports and connect  only a few collision domains,or Hosts a Bridge has comparatively less ports than  a switch .A switch has usually 24 ports or 48 ports .

Different between Network Switches and Bridges

* Packet forwarding in bridges are performed using software. Packet  forwarding switch are performed using ASICs.

*Switch operate comparatively  higher speed that bridges.

*Normally switch has more ports than a Bridge.

*Switch supports full-duplex LOCAL AREA

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