What's the difference between a hub and a switch? Click for Solution |
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A hub is not an intelligent device where as switch is an intelligent device.switch stores the ip address in MAC table
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A rupesh...Hub is also a layer2 device
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A Hub is a broadcast device, i.e packets coming from one port os forwaded to all ports of hub. since it is a broadcast device, there is a lot of collision between packets, and hence this device is not used for large networks.
properties of hub:- 1, it has one collision domain(by collision domain we mean that, ther is only one domain where all packets will collide). 2, it has one broadcast domain(broadcast domain means that, there is only one domain where all the packets will be send). IT is not intelligent, and dosent have any hardware chip type.
switch is an intelligent device in which there is one broadcast domain but collision domain is= no of ports in switch, i.e each port is itself a collision domain. It has an hardware AISC(or ASIC dnt remember right now) chip.
IT has some memory also, where filter table or mac table id stored.
when ever a packet comes from a port it is checked in the mac table and the destination mac address is searched, if found then the packet is directly send to that port, it not found then it bloadcasts to all port except from where it came.
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b whenever hub gets a mssage packet it sends it to all nodes connected to it but switch first time send message to all nods but next time it sends only to destination node.so switch is called intelligent device.hub is layer1 device while switch works on layer 2 as well as 3.
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