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The distinction between bandwidth and latency is something that confuses a whole lot of people, but if you are an it expert it'd be beneficial to recognize the difference among the 2 because in the end you'll face a network problem associated with it. Part of the confusion has been created via internet providers by continually recommending growth of bandwidth to each internet pace related problem, however as we are able to see, an internet connection velocity is not continually dictated by bandwidth.

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What's bandwidth?

Bandwidth is the amount of facts that can be transferred from one point to every other commonly measured in seconds. Net carriers typically advertise their net bandwidth like this 20/20 mbps because of this that 20 megabits/s of facts may be uploaded or downloaded from youtube in a second as an instance. Most people are most effective acquainted with bandwidth measuring phrases like megabytes, gigabytes, and many others., however net carriers nonetheless use the megabit metric because it makes the numbers look larger but in fact a 20/20 mbps connection is only approximately 2 megabytes. The critical issue to remember approximately bandwidth is that bandwidth isn't always pace. hence the confusion!

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What's latency?

Latency is the time that a information packet takes to travel from one point to some other. Any other correct term for latency is postpone. One critical component to recollect about latency is that it's far a natural phenomenon postulated through einstein in the theory of relativity. In our universe, the whole lot desires time to journey, even mild. So at the internet, the time it takes a packet to travel ( from facebook’s information middle on your computer for example ) it’s known as latency.

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What’s the distinction among bandwidth and latency?

Via studying the definition of both terms above you probable already spot the distinction between the two, however i’ll give you an analogy to make it simpler to understand it in case you are still confused. Consider a toll road with 4 lanes in which the rate restrict is 60 mph. Now on the net, bandwidth is the toll road, and latency is the 60 mph pace restrict. Now if you need to growth the quantity of automobiles that travels via the motorway you could upload more lanes, however because the toll road has too many curves, and bumps, you can’t increase the speed restriction so all vehicles need to journey at 60 mph nonetheless. It doesn’t depend how many lanes the highway has, the cars will get to their vacation spot on the equal time no matter the scale of the dual carriageway.

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Why growing bandwidth increases down load pace then you definitely would possibly ask, isn’t that velocity?

No, with the aid of increasing bandwidth you growth capacity not speed. Following the toll road analogy, imagine that vehicles traveling through that toll road were all vans with residence bricks for transport. All vans need to tour at 60 mph, however once they come at their vacation spot in preference to handing over 4 masses of bricks, 6 hundreds are added because 2 more lanes were delivered to the motorway. The equal factor occurs while you upload bandwidth to an internet connection, the ability is increased but the latency (pace ) remains the identical.

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What reasons latency?

Latency is caused by the distance and the exceptional of the medium that the internet packets journey thru. As an example, the latency through a fiber optic connection is shorter than via a copper cord cable, however latency through a copper wire cable is shorter than through a satellite tv for pc connection, and so on. Satellites use the microwave spectrum to relay statistics connections from area. What will increase the latency e.g. lag in satellite tv for pc connections is the space that packets must journey backward and forward.

When is latency a trouble?

Most of the people don’t observe and don’t care approximately latency as long as web pages, netflix, youtube, and other multimedia stuff load fast. l
Latency will become a trouble only when actual time records transfer is necessary. For instance, voip calls, on-line face to face conferences, and so on. Any latency beyond 200ms will give you troubles in real time verbal exchange. As an example in a skype or voip name, you will enjoy a substantial put off, so one can make it nearly impossible to have a fluid communication without interruptions.

How am I able to check latency?

The fastest way to test latency from any laptop is the usage of the icmp protocol with the ping command. As an instance, if i want to test the latency between my pc and google’s facts center, i'm able to type in the command ping google.com:

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As you may see the average latency among my laptop and google’s facts middle is 18ms.