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Routing is based on layer 3 (network layer) which means that the ip address is used to forward packets to it is destination while in switching u are using the MAC address (based on layer 2 datalink layer)
but there are some types of switches which are based also in layer 3 (Can support routing)
swicth is like the old telephone system : hey i wanna connect to person2 then an operator connects u to your destination by connecting wires (make a bus connection between 2 hosts)
Hi
thanks for quick reply.
yes i mean in networks.
yup i know that routing is done on n/w layer and switching on datalink layer, also there are switches,called smart switches, which can work in n/w layer.
can u tell me more abt the difference.
can i assume that switching is performed in physical circuits, while routing is done in virtual circuits?? also switching is done directly b/w two hosts(telephone example) while routing is done through various paths(multiple packets through different routes) to connect two hosts??
In a telecommunications network a switch is a device that channels incoming data from any of multiple input ports to the specific output port. Generally a switch is used for a dedicated but temporary connection between two or more users.
As for a router it is connected to at least two networks and decides which way to send each information packet based on its current protocol.So with a router there is more than one possible route but depending on its protocol it picks a particular route.
can i assume that switching is performed in physical circuits, while routing is done in virtual circuits?? also switching is done directly b/w two hosts(telephone example) while routing is done through various paths(multiple packets through different routes) to connect two hosts??
will i think all what u said is right ,but note that switches also may be connected together (a switch connected to another switch) not only for hosts
may be the most important thing that u must take care of that switches may increase the bandwidth by dividing the collision domains but they donnot prevent broadcasting and that may cause" looping "
this is not happeneing in routers as they prevent the broadcasting for all the conneceted networks and make broadcast in specific domain
and to overcome this problem in switches an algorithm called "spanning tree algorith " is used
take care of the topic of collision domains and broadcast domain
wish this helps u and that u have lucky in your interview
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