How to Speed up Your Home Network by Changing the MTU Size

Рет қаралды 133,988

Күн бұрын

In this video, we talk about MTU is, why you should consider changing the MTU size to get the most out of your home network, and I'll walk you through how to actually get it changed.
Command to test the packet size:
Ping www.homenetworkgeek.com -f -l 1500
Command to see all of the network interfaces and the current MTU size:
netsh interface ipv4 show subinterfaces
Command to change the MTU size:
(Replace "Ethernet" with your interface name and "1428" with the best MTU size you found)
netsh int ipv4 set subinterface “Ethernet” mtu=1428 store=persistent
📝 Check out the written article - homenetworkgeek.com/mtu-size/
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Contents of this video:
0:00 - Introduction
0:32 - What is MTU?
1:09 - When should you change the MTU size?
2:15 - How to find the best MTU size
4:15 - How to change the MTU size
About Chris:
Chris is an IT professional that setup HomeNetworkGeek.com and this KZfaq Channel to share his knowledge on home networking. To learn more about him, visit: homenetworkgeek.com/about/N

Пікірлер: 157

@GregiiFlieger 3 жыл бұрын

Nice job. I like the fast and straightforward charging through the topic. If people think that your going too fast, they should just watch again! Thanks and cheers!

@harifidyr 2 жыл бұрын

It helped me a lot, others tutorials dont show me how to find my local network router name. Thank you very much and nice job.

@SgtFuzzy80075 5 ай бұрын

I had a lot of jitter on my network and this helped smooth it out a lot! Thanks for the useful info!

@rednajma Жыл бұрын

New subscriber here. Glad to see your video 'coz I couldn't find a way to change MTU via my modem's interface. Very helpful!

@leadiususa7394 2 жыл бұрын

Great walk thru! I am sharing your video dude!

@TheLegoTrainStation 3 жыл бұрын

Interesting stuff! Just started using my Honor Router 3 today so messing around. The only Wifi 6 device around is my gf's phone and she isn't even here cuz lockdown.. I found this via your website. Ironically the highest stable value I could get was 1472, which when you add 28 takes me back to the router's default 1500! But fun either way.

@leftspeaker2000 Ай бұрын

Same thing ! Fun little thing all the same.

@Sam-kx7jc 11 күн бұрын

Great video. Straight to the point. I found my best MTU setting was 1472. Plus 28 equals the nice and round 1500 figure

@EustisRider 2 жыл бұрын

Thank you so much. Very thorough!

@Joewalshe38 3 жыл бұрын

Thanks. I followed your instructions and it seems to have worked

@homenetworkgeek192 3 жыл бұрын

Glad it helped

@Cenodeath 3 жыл бұрын

Thank you for this!

@shadyfuucktherest 3 жыл бұрын

Thanks for the help ! nice and easy

@diptodas6994 3 жыл бұрын

That was a great video. thanks ^_^

@broderickfall Жыл бұрын

Simple, concise, organized and indexed, and to the point. You, sir, have got yourself a new subscriber

@mrtwinky2007 Жыл бұрын

agreed

@VVVVV99611 Жыл бұрын

What the people need

@apltmk9119 3 жыл бұрын

keep it up! thank u man.

@TheSnowwraith 3 жыл бұрын

Thank you for an informative and to-the-point video. Very helpful!

@roki3805 2 жыл бұрын

thank you man. it works

2 күн бұрын

Great video!

@rbluma9329 3 жыл бұрын

thanks for this video it helps alot i was fining this stuff im not smart like you

@ssn22 3 жыл бұрын

underrated channel!!!

@4lx727 2 жыл бұрын

bro this helped a lot

@danielskarsten6194 3 жыл бұрын

4:50 to change mtu

@legendarytronic7774 2 жыл бұрын

Thank You!

@Mecrom Жыл бұрын

how does the mtu size get distributed? both the sender and receiver need to have the same mtu, correct? So how do they know the mtu of eachother? dhcp?

@laurencegoodchild2856 3 жыл бұрын

Hi Chris, thanks for this video. Like you, the router provided by my provider (Vodafone) does not allow me to change my MTU. As such I'd like to do this at a device level. Trouble is, the device in question is a raspberry pi which I have very little experience with, and generally speaking my IT knowledge is basic. Do you happen to know if it is possible to change my MTU on my raspberry pi? Or if I changed it using a Windows laptop, would this also change the MTU at the router level (I.E. for all devices connected to it)?

@homenetworkgeek192 3 жыл бұрын

Changing the MTU size your Windows laptop will only change it on that device unfortunately. I haven't done it myself, but this thread looks to guide you through how to change it on the Pi - discourse.osmc.tv/t/how-to-change-mtu-size-on-wifi-ethernet/11125/9

@Psylo94 Жыл бұрын

so what issue it can cause to go with the highest mtu 1500 if u have df packet ? does it inpact the video games etc ?

@Xbaharat 2 жыл бұрын

But I have an issue when I run the command that changes the MTU it says: Element not found

@okkerz2044 Жыл бұрын

hi mate great video but when i put netsh int ipv4 set subinterface "Ethernet" mtu=1492 store=persistent instead of it replying OK its says element not found can you please help

@babakopoulo 2 жыл бұрын

I have a laptop . This change of MTU will effect only my home internet connection ? The performance and general behavior of my pc when i travel, will be the same . Correct ? No problems ?

@kdubssolo9111 2 жыл бұрын

i get 0% packet loss at 1472, so i add 28 which would mean i need to set it to 1500 correct? but what if mine says 1500 already when i did the, netsh "interface ipv4 show subinterfaces" does that mean there is nothing i can change???

@ryanwood6754 Жыл бұрын

Cheers dude I followed another internet article and they got the change command prompt all wrong. So I was stuck halfway through the process. Cheers my Internet went form 50 download speed to 110

@diasandreas4901 2 жыл бұрын

Ive tried my mtu, it still pinging even at 1200. I used ethernet connection, what should i do then??

@flarefrost6302 3 жыл бұрын

I've been looking for a way to change MTU size on pc after I changed the MTU size on my Nintendo Switch and went from 200kb/s download speed to 12mb/s download speeds (My only internet where I live is my phone's hotspot)

@neil9151 Жыл бұрын

thx legend!

@garethwigglesworth8187 2 жыл бұрын

I have ipv6 should I increase my MTU size from the default 1280?

@426Studios 2 жыл бұрын

I followed the calculation, and what I got is 1500, which is already the default setting for me T_T. I am using an Deco M4 with Ethernet Backhaul. It was originally a wifi backhaul and someone suggested to me changing it to Ethernet backhaul so I did. After I switched to Ethernet Backhaul I got the full speed but after a few days it reverted back to half of my plan speed. I tried connecting wired directly to the router and got the full speed. I tried connecting to the Main node and still got the full speed but on the 2nd node I only get half the speed. I dont know anymore whats the problem.. I tested all the cables and theres no problem with it. I also purchased another ethernet card. At first I got full speed but after a few days it again reverted to half the speed. I tried reformatting my pc and still the same problem: At first full speed then reverted back to half speed.

@oli133 Жыл бұрын

good vid mate bt I cant seem, to get My pc to move files to my NAs at more than 7.5 - 8 mb/s on a 100mb hard line.. any ideas?

@rabinderluhana1496 3 жыл бұрын

does anyone know how to set it up on huawei router? i cant find settings

@SamA-xu9gy 2 жыл бұрын

How can i know the mtu of internet provider ? What the order or the code that can i write in ms dos terminal windows , for give me the real mtu of internet provider ? Not from my router

@eskimosandpresents6481 2 жыл бұрын

Does the store=persistent command make this a permanent change on a device, or does it reset the MTU to default when the computer reboots?

@b00gzzz 2 жыл бұрын

makes it permanent

@rickhenry1833 2 жыл бұрын

Question M8. I have my MTU set at 1500, yet my video streaming is still pausing/buffering. I've cleared all my caches, turned off all unnecessary background programs and no one else is on my network. What else can be the issue that I may have overlooked ? Is it possibly my bloody ISP ?

@90Sohaib Жыл бұрын

Yes!

@jakenotjake899 3 жыл бұрын

so when testing ping at my 1500 mtu(already at 1500), it wont work, highest i can get is 1478. then when changing you said to add 28, which puts it back to 1500. i dont get how that works

@TheRealSpleech 3 жыл бұрын

You would have 1506

@ZacharyNR 2 жыл бұрын

Because only the 1478 is relevant to the packets, the other 28 (which would make your overall mtu 1506) is for additional things. You should set your Mtu to 1506 in your router settings.

@jayyates3621 2 жыл бұрын

if by adding 28 i should get 1500 is it possible that i can go down to 1490 for example

@zubaeerahmed1139 3 жыл бұрын

Can you do it for android too? Please

@VEKTOR_87 3 жыл бұрын

thanks

@Eloign 9 ай бұрын

What do you do if it says operation not permitted?

@fathersun6238 Жыл бұрын

Just a sec there's 2 options for ps5 digital edition when you go 2 advanced section,for example Automatic MTU or manual 1500.If 1500 is the maximum & Automatic need time 2 find the correct number then what is better?Manual setting with 1500 MTU or Automatic???

@incoming90ify Жыл бұрын

so does this apply to any network, so it just find the mix that your computer can fun

@PhilHibbs 3 жыл бұрын

So if you can set it on the router, or on the device, which takes precedence? As the local device already has a setting (mine was 1468, whereas the tests showed 1500 as optimal), how would changing it on the router make a difference if my local device already has a setting? Is it to do with the MedaSenseState?

@SaviorTheBurn 11 ай бұрын

which ever is smaller

@ressan7455 3 жыл бұрын

Really nice video, But I have an issue when I run the command that changes the MTU it says: Element not found. help please

@b00gzzz 2 жыл бұрын

Be sure to find out what your interface name is and put the name in quotations

@Capt_OscarMike 3 жыл бұрын

SUBSCRIBED

@stoneystevenson1060 2 жыл бұрын

Hi, I have a question. On your web site I don't see any certifications or qualifications listed. As an IT person would you not want to show that off? Your web site has no contact info. Hum... If changing the MTU is so good then why is it not set that way?

@panaoutsios1990 3 жыл бұрын

Fragment threshold best setting is 255 and RTS threshold to 5 or 10

@TobolChi 9 ай бұрын

how to change

@panaoutsios1990 9 ай бұрын

@@TobolChi wifi settings

@ibraheemali3562 2 жыл бұрын

How do I know my ping size on when I’m on talktalk when I enter it says no file found

@arthurky3937 3 жыл бұрын

Show when you say network interface do you mean the name of my network adapter or the connection type that I'm using because im using a lan connection any clarification will be greatly appreciated by myself

@homenetworkgeek192 3 жыл бұрын

It will be whatever is listed as the interface when you run this command: netsh interface ipv4 show subinterfaces

@xen4456 10 ай бұрын

When I attempt to change my MTU setting: "netsh int ipv4 set subinterface “Ethernet” mtu=1428 store=persistent" command prompt shows: "Element not found." What do I do?

@TheUncleshady 3 жыл бұрын

lol I was hyped up! Got it down to 1472. Added 28. Got 1500. Router defaults to 1500. Anyways....

@elias38 2 жыл бұрын

the same

@trr1932 2 жыл бұрын

Same, mtu default was 1500, on my nas its 9000 for jumbo frames^^

@VVVVV99611 Жыл бұрын

You got lucky mate. Cheers

@Healcraft 2 жыл бұрын

Whenever I ping any address with 1472, 1460 etc it times out, but it doesn't time out when I use just a normal ping with no additional arguements

@kinginthenaught 6 күн бұрын

is this for ipv4 or ipv6? both have diFfernt MTU... does this matter?

@invikari 11 ай бұрын

I accidently changed the MTU value for "Loopback Pseudo-Interface 1" Could anybody help me reverting it back to default? I wasn't smart enough to take a screenshot of the table before I made any changes and in this case a mistake.

@MjedOP Жыл бұрын

The filename, directory name, or volume label syntax is incorrect. this is what i get when i set the mtu. what is the problem ? please help me

@informationzoobi509 3 жыл бұрын

I have router d'link 825acg1 mtu 1492 tell me perfect mtu setting plz

@DougLiebig 2 ай бұрын

Does the part where you mention adding 28 bytes to the maximum packet size that doesn't require fragmentation apply if you are ONLY using this router for VPN traffic? I ask because the maximum packet size that pings through the VPN without fragmentation is 1472. This plus 28 equals 1500 which is the router default. So I would just leave it at the default?

@Zeric1 Ай бұрын

Yes, leave it at default. The majority of people have no need to be changing the MTU, there are edge cases where it can help, but it's not needed for most. If one's speedtest performance on a hardwired connection gives them roughly the speed they expect, then there is no reason to delve further. This is only something to muck with if one is having performance issues on hardwired connections. I say hardwired connections because performance problems in WiFi are common and much more likely to be related to something else.

@BlazenWinchester 7 ай бұрын

on point

@hgrobert2 2 жыл бұрын

thx for the MTU break down I was setting my 1500 MTU thx to you found my sweet spot 1472

@curtisbme 2 жыл бұрын

And then you add 28 to 1472 so 1500 is your sweet spot.

@CSAFMedia 3 жыл бұрын

When I performed this step 5:06 the displayed MTU value 1500 was higher than my ping test optimum MTU plus 28 value, 1498. So really no need for a change?

@homenetworkgeek192 3 жыл бұрын

Yeah that's right - no need to change anything.

@richievellalar3214 3 жыл бұрын

@@homenetworkgeek192 Then why you change your MTU from 1500 to 1488 ?

@PharaoahMonk 8 ай бұрын

@@richievellalar3214 lol yeah. also mine shows 1500 but when i do the ping test it follows as fragmented so maybe that's not the best option

@Obbss 6 ай бұрын

wait i got it to 1472 but 1500 is where im getting the packet loss though?

@steventhompson3507 Жыл бұрын

i dont understamd what command it is that your saying to type in . all i get is windows system 32 after clicking yes to run as administrator.

@Hammond_youidiot 2 жыл бұрын

How can you set it back to default?

@benjaminkurian4730 3 жыл бұрын

I did the the ping test and found MTU at 1432 i.e 1432+28 = 1460. But the MTU set on my router is 1492. What should I do?

@notlmentrix4427 3 жыл бұрын

Change it

@incoming90ify Жыл бұрын

can you do this with ipv6

@seksdesperate9245 Жыл бұрын

I dont understand the adding or subtracting 28 bytes Wouldnt that be included in the mtu packet being sent...

@ColdNovRain 2 жыл бұрын

when i find the right one i add it and i do the scan again with the same one that worked with 0% packet loss i get 100% packet loss from the same one.this really doesn't work

@inspiredbyyou7048 2 жыл бұрын

I cant find my MTU is always says timeout

@yesnt5986 Жыл бұрын

Can someone please help me revert these settings, every since I did this my internet speed is messed all the way up

@krisztoferorlik4858 3 жыл бұрын

hy what is the interface name ?

@marianarvaez9923 3 жыл бұрын

Does anyone know how to do this for your Xbox

@nasrn1862 3 жыл бұрын

What about the MRU bro ? Thanks for the video

@Bloom10 3 жыл бұрын

The MRU same goes for MTU they are the same

@nasrn1862 3 жыл бұрын

@@Bloom10 thank you 🌺 Your 600 subscriber

@Bloom10 3 жыл бұрын

@@nasrn1862 np 👍

@Bloom10 3 жыл бұрын

@Vlad Yes.

@pokulot3041 2 жыл бұрын

There is no MTU in my router.. pls help!

@b00gzzz 2 жыл бұрын

Which router are you using? I'm using an Asus AX58U and in the "WAN" menu using "Auto IP" there isn't an MTU adjustment. I changed to firmware to Asus MerlinWRT and it was there after the flash.

@Sauron191 Жыл бұрын

Can you show us how to change the MRU setting so that this is optimal please

@VVVVV99611 Жыл бұрын

Yes this will help you change MTU. You gotta put your router url in your browser to access *your* router settings. To get that info, look up your router's brand and model

@vasiliyboulytchev2434 2 жыл бұрын

netsh int ipv4 set subinterface “Ethernet” mtu=1490 store=persistent The parameter is incorrect.

@user-iz4rs5vf3n Ай бұрын

Explanation of what to do in Geek Jargon is too fast and the CMD window you display is too small to see what to type. It may be a doddle, like a second lingo but not for the regular or intermediate joe.

@alexz6985 2 жыл бұрын

can someone help with this error : the error : The syntax supplied for this command is not valid. Check help for the correct syntax i wrote : netsh int ipv4 set subinterface 1 Wireless LAN adapter Wi-Fi 3 mtu=1492 store=persistent did everything right idk why its not changing

@gauravcharde13 2 жыл бұрын

put Wi-Fi in double quotes

@gauravcharde13 2 жыл бұрын

i mean whatever the interface name, put it in double quotes

@alexz6985 2 жыл бұрын

@@gauravcharde13 thx bro

@gauravcharde13 2 жыл бұрын

@@alexz6985 welcome 🙂

@7modagamer980 3 жыл бұрын

The filename, directory name, or volume label syntax is incorrect He said

@nyssus9388 Жыл бұрын

same

@twistedatm6937 3 жыл бұрын

Mtu value out of range?

@tlwilly223 2 жыл бұрын

Mine keeps showing requests timed out

@TLK3324 7 ай бұрын

You are talking about the Win, how about MACOS?

@zubilitic Жыл бұрын

Hello, Suggesting "open terminal for macos" without showing how ping works there is misleading and I will explain why. Whoever is watching this (and doesn't know) may think that ping command works in the same way on Windows and macOS which in fact it does not. For a simple "ping target" is OK but if you add more options the things are totally different. FYI: the option -f in macos or linux = flood ping which is not something one would want to use. Anyway, it needs power user (root) but the confusion is created.

@evolutionarystate5386 Жыл бұрын

after you had us Mac users open terminal... no instructions.. LOL.. it's -s to insert packet size

@capricels334 Жыл бұрын

how to reset the mtu settings

@blubhumm Жыл бұрын

Deep

@FiSA01 2 жыл бұрын

What happens if i dont add 28?

@trr1932 2 жыл бұрын

You can try it, your pc will simply lose its internet connection

@LiveEnjoyment Жыл бұрын

lol mine is 1472, and the standard is 1500 =D

@charlesrichardson8635 3 жыл бұрын

It would be nice if you would put the text of the commands into the description. You are also speaking just a bit fast.

@homenetworkgeek192 3 жыл бұрын

Thanks for the feedback; they have been added.

@GuyTheAnimated Жыл бұрын

well I found that my MTU was already perfect at 1500.... lol

@viperv7305 3 жыл бұрын

This doesn't work on Terminal? I keep getting '-f not permitted' error'

@fhantomaz 2 жыл бұрын

same here

@NotNagruf 2 жыл бұрын

Sorry, but i think u didn't write this command to the description, so guys just copy: netsh interface ipv4 show subinterface

@AlbertusEka Жыл бұрын

how to reset MTU?

@bigbillyz 3 жыл бұрын

What’s a rooter

@richardgraham4512 3 жыл бұрын

Its the British English pronounciation of what US English speakers call a "row-ter"...😝 Its because in the UK "route" (i.e a course to take) is pronounced "root"; which distinguishes it from "rout" (i.e a disorderly retreat) pronounced "rowt" hth 😉