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If i am having a wifi modem, who controls the speed of it

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jraju:
Hi, Now only i know that the speed of broadband and wifi are totally different. I thought that the speed of any net acess is controlled by the ISP of the plan rate of the usesrs. But on seeing some articles, i now know that both are different. If BB is speed is controlled by ISP, any device connected it also shares the speed. This was my thinking. But now i know that both are differnet. Who controls the speed of the wifi, is it the vendor of the wifi modem, Dlink ? or any other thing.
Neighbourhood routers may be of differrent brands . I want to know the details about

Boggin:
The speed you get from your ISP will be the max you can get when wired and the wireless speed is proportionate to that.

Some routers can allow a better wireless speed to be achieved than others and in other cases it can be because of the wireless NIC in a computer.

To give an example of that, I have two models of my ISP VDSL routers.

One is a HG633 and the other is a HG635.

While I get a max of 37.5Mbps wired on three laptops with both routers, I'm looking at wireless speeds of 20 - 22Mbps from the HG633 and 28 - 30Mbps with the HG635 on two laptops but on an older one, the wireless speed is only around 15Mbps at best.

This article touches on what slows wireless speed in comparison to Ethernet but wireless speeds can sometimes be improved by experimenting with the channels the router is broadcasting on.

https://www.howtogeek.com/217463/wi-fi-vs.-ethernet-how-much-better-is-a-wired-connection/

inSSIDer3 can help to determine the best channel to use. http://www.techspot.com/downloads/5936-inssider.html

jraju:
Hi, I will try to look in to both the links. But who controls it. The BB speed is controlled by the ISP depending upon one"s plan. But wireless, is it provided by the router manufacturer? i mean, dlink , in my case? i am having little confusion as the access is Lan in my case for my BB connection. i get wifi thro laptop and mobiles. Who controls the speed? Is it device based? or others. pl boggins.

Boggin:
Interference, Latency, channel setting and the devices using wireless will determine the wireless speed, but overall it will be proportionate to your max speed coming down the line.

Having multiple tabs open when doing a wireless speed test will be lower than when just having the one tab open as they will be using up bandwidth.

In my case, an older laptop's wireless NIC would seem to be the cause as far as I know, the reason why its wireless speed is lower than the other two machines.

There are two NICs - one for Ethernet (LAN) and one for wireless in both the router and computer, with some routers having a better wireless NIC than others.

This is why you'll get complaints about some routers having a poor wireless range.

jraju:
Hi, Boggin , pl let me know, who controls the access of wifi, is it ISP.
  2. If i use the Google dns server as prefered dns server, is the external ip is given or allotted by google or my service provider. pl

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