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Switches are very similar to bridges as they both resides at layer 2
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or the data link layer of the OSI model.
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The big advantage of switching when compared to bridging is that processing
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can be done in hardware using what are called ASICs
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or Application Specific Integrated Circuits.
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The number of ports supported by switches is also a lot higher
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hundreds of ports are supported on certain switches.
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Whereas with bridges you were limited to a few ports.
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Switches are able to do this because processing is done in hardware and in actual fact
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these days processing is done at wire speed which means that there is no degradation of
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performance between 2 devices when they are connected via a switch in other words
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switches can move traffic from one port to another port at the same speed
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as if they went there, they can process and switch frames from one port to another port
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without slowing the frame down.
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So here�s a quick comparison between switches and bridges
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Switches processed in hardware using ASICs.
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Bridges process in software and are therefore a lot slower
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switches support many ports, bridges are limited in the number of ports
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that they support, bridges have been replaced by switches in today�s network.
1972
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