How to Speed Up Internet Using CMD (Command Prompt)

Slow internet connection is very annoying while we are browsing on the internet most of the times we may restart our device or router and then wait for our luck with the increased internet speed, if that doesn’t work then we complain our service provider and even after that if we are experiencing the same thing then we change our service provider for better internet connectivity. Here are some tips and tricks to speed up your internet connectivity not by using any software but simply using CMD.

To speed up the internet we have come up with some windows tweaks. Some of this includes DNS caching, pinging to the default gateway, and using netsh int tcp command along with different attributes to increase the internet speed.

How to speed up internet using CMD

1. Check internet speed using CMD pings to the default gateway

Use Win+R key and then type CMD in the Run box and then click ok.

You must know the default gateway to know that, just enter the “ipconfig/all” command. Then you will know the IP address of your default gateway now you need to run a continuous ping by typing ping –t <enter the default gateway address>. Here time field value will show you the taken to get an acknowledgment to lower the time value faster is your internet connection. However, running a lot of pings consume network bandwidth as well as default gateway resources. But if you are using data packets then ping for data packets is negligible in size and you might not feel any change in speed.

2. Flushdns to Speed up internet using CMD

A list of websites is maintained by our computer and their corresponding IP addresses that we access the most DNS resolver cache. These data become after months or weeks. When we flush our DNS resolver cache, we actually Flush out our DNS resolver cache, we actually flush out the obsolete data and make new entries in the DNS resolver cache table, Use the command ipconfig/flushdns after opening the command prompt

If you use this command initially you will experience a slower connection because of the requirement of the new DNS lookups for every resource. However, after some time you will soon experience faster loading of the websites in your browser.

3. Speed Up Internet Speed using ‘Netsh int tcp’ Command

Use the command Netsh int tcp command in command prompt window and observe carefully. If you do not see Receive Window Auto-tuning level as ‘Normal’ as shown above then run the following command

netsh int tcp set global autotuninglevel=normal

The command which we have mentioned above will set your TCP receive window to Normal from the disabled or restricted state. TCP receive window is one of the key factors in the internet download speed. Thus making the TCP receive window to ‘Normal’ will surely help you in increasing your internet speed.

After this command, let’s check for another parameter of Windows in terms of the slow internet connection called ‘Windows scaling heuristics’. To check for this parameter, type the following command

netsh interface tcp show heuristics

Well, in my case, it’s disabled. However, in some cases, it might be enabled. That means Microsoft in some ways, is trying to limit your internet connection. So avoid it and to get faster internet, use the below-mentioned command and press enter:

netsh interface tcp set heuristics disabled

Once pressed enter, you will receive an ‘OK’ message and now you internet speed has surely got boosted up.

Once you are done with the above steps, you can follow step one again to measure the time value in getting a ping acknowledgment from the default gateway, just to check if your internet speed has gone up or not.

4. IP release and Renew

If you are using a WiFi connection, in the case of IP release and renew, you may experience a temporary speed boost, depending on the strength of the WiFi signal. However, in the case of LAN, it won’t affect speed.

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