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How do i change my mtu setting? - Microsoft Windows Vista Ultimate Edition

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Use this site for a complete optimization
OR connect to your router and config it using advanced wan settings

Posted on Jan 11, 2009

  • Pat Batta
    Pat Batta Jan 11, 2009

    from a search on same link:
    You need to run and elevated command prompt. Click Start > All Programs > Accessories, right-click Command Prompt and Run as administrator, Allow it to have administrator privileges, otherwise it won't work.

    Then type/copy & paste the following command:
    netsh interface ipv4 set subinterface "Local Area Connection" mtu=xxxx store=persistent

    Where xxxx
    = the MTU that you want. Rebooting isn't required. "Local Area
    Connection" is a common name for the interface if you use a NIC for
    connectivity. A wireless NIC may be called "Wireless Network
    Connection". If unsure, the network status icon by the clock will tell

    If you have a router, ensure that the MTU is set to the MTU chosen here (refer to your router's manual).


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What dialog box can you use to change the computer name after windows 7 is installed?

1. Click Start button
2. Click Control Panel
3. Click System
4. Under the title "Computer name, domain and workgroup settings", click Change Settings.
5. In the System Property dialogue, click Change button.
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Jun 13, 2014 | Computers & Internet


Increasing Speed of Internet Using MTU settings in xp

Increasing Speed of Internet Using mtu settings in Windows XP:
Maximum Transmission Unit (MTU) refers to the size (in bytes) of the largest packet that a given layer of a communications protocol can pass onwards. MTU parameters usually appear in association with a communications interface. The MTU may be fixed by standards (as is the case with Ethernet) or decided at connect time (as is usually the case with point-to-point serial links). A higher MTU brings higher bandwidth efficiency.

Maximum Transmission Unit (MTU) refers to the size (in bytes) of the largest packet that a given layer of a communications protocol can pass onwards. MTU parameters usually appear in association with a communications interface. The MTU may be fixed by standards (as is the case with Ethernet) or decided at connect time (as is usually the case with point-to-point serial links). A higher MTU brings higher bandwidth efficiency.

The default and maximum PPPoE MTU size is 1,480 bytes. With some Internet service providers (ISPs), you may have to reduce the MTU size of a PPPoE connection to a value between 1,400 and 1,480 (for example, to 1,454). Do not set an MTU size smaller than 1,400.
Modify the MTU size requires registry editing in windows xp
WARNING: If you use Registry Editor incorrectly, you may cause serious problems that may require you to reinstall your operating system. Microsoft cannot guarantee that you can solve problems that result from using Registry Editor incorrectly. Use Registry Editor at your own risk.
To modify the PPPoE MTU size, create the following registry key:
Then add the following registry entries.Entry name Data type Value data
ProtocolType REG_DWORD 0x00000800
PPPProtocolType REG_DWORD 0x00000021
ProtocolMTU REG_DWORD the appropriate MTU size (in decimal)

1. Click Start, click Run, type regedit, and then click OK.
2. Locate and then click the following key in the registry:
3. On the Edit menu, point to New, and then click Key.
4. Type Protocols, and then press ENTER.
5. On the Edit menu, point to New, and then click Key.
6. Type 0, and then press ENTER.
7. On the Edit menu, point to New, and then click DWORD Value.
8. Type ProtocolType, and then press ENTER.
9. On the Edit menu, click Modify.
10. Type 800, and then click OK.

11. On the Edit menu, point to New, and then click DWORD Value.

12. Type PPPProtocolType, and then press ENTER.

13. On the Edit menu, click Modify.
14. Type 21, and then click OK.

15. On the Edit menu, point to New, and then click DWORD Value.

16. Type ProtocolMTU, and then press ENTER.
17. On the Edit menu, click Modify.

18. Type the appropriate MTU size (decimal value), and then click OK.

19. Quit Registry Editor.
Restart the computer for the changes to take effect

on May 25, 2008 | Microsoft Windows Vista Home Premium with...

1 Answer

My wifi will not use my wifi router after upgrading ubuntu to ver 11.10 it worked before and i can use different wifi routers lspci 00:00.0 Host bridge: ATI Technologies Inc RS690 Host Bridge 00:01.0 PCI...

first make sure your wireless adapter is not disabled you can check it by running rfkill list in terminal if it is type sudo rfkill unblock wifi [second you can try activating and deactivating by typing sudo ifdown wlan0 and sudo ifup wlan0 me personly have kept to 10.10 the 11.04 seem to have a few glitches you can also check for additional drivers

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Changed DPI settings; can't change it back

drop in to Safe mode and reset video from there

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Tiny print - dpi setting changed

you could try putting the installation disc back in that shud reset it back to factory settings

Apr 24, 2009 | Microsoft Windows XP Home Edition

1 Answer

Disabling users from changing system time & date?

If you're the administrator you should be able to set user permissions through the control panel. I had a Windows 2000 which had some features comparable to a 98. Most likely you will have to enter the category known as, "Administrative Tools" located within the, "Control Panel."

In this region you can change security policies, overall computer settings, and user settings (At least that's how it was on my 2000). I don't know which option you need to change to disable non-administrative users from changing time, however playing around with some of the settings might help you figure out which one it is.

NOTE: Make sure you don't change any of the settings for administrative users! If you do you might not be able to access the control panel or change administrative settings in the future.

Since I'm uncertain about this working with a 98, contact me again later notifying me if the above worked or not. I'll see if I can help you resolve this.

Mar 11, 2009 | Microsoft Windows 98 Second Edition for PC

1 Answer

I can't view certain websites

Sounds like you have a Malware infection.
I suggest that you go to download and install spybot.  Then run it.
Reboot the Pc and then update and run it again.  Keep doing this until it finds no issues.
Test to see if you can get to the website.  Do you have any other PC’s you could test from your location?  It could be that you are suffering from DNS poisoning, but I would rule out spyware 1st.

Do you have a virus checker?  if not then try

Oct 21, 2008 | Microsoft Windows XP Home Edition

2 Answers

LinkedIn tanks at log in w/ Windows Vista, fine with prior operating systems

I found a solution for *my* problem, by shrinking the MTU in my router.

I have two Vista PCs at home that can't access LinkedIn's sign-in page.

I was suspicious that several browsers seemed to be having a problem, which made me think it was either a virus middleman in the network code, or a router problem. I eliminated the virus possibility by replicating the problem on another PC.

By changing the MTU on my home router from Auto to 1452, I got the signup page to appear.

It appears that Windows Vista's new TCP stack does some advanced segment and window sizing and that didn't work with my Linksys RV042 router's Auto MTU setting. I'm not 100% sure what it is about LinkedIn that caused a packet of just the wrong size, but this is the second time I had to tweak this router to work with Vista. First I needed a firmware upgrade to get some traffic flows to work at all, and now this MTU change.

I do know I've had to change MTU settings in the past to work with encapsulation protocols like PPPoE, but I haven't had to change the MTU setting for quite some time...

Maybe this clue will help someone else...

Oct 07, 2008 | Microsoft Windows XP Professional

1 Answer

I have 20mb broadband but only 300kbs download speed

I personally have never known that changing the MTU setting can speed up your connection, as the MTU is the maximum transmition units that is sent to your pc from each web site and if the MTU setting is incorrect then some web sites will not load on your explorer page, the speed at which you download the page will not make any difference.

If you are supposed to get 20MB speed then you must be on cable and not ADSL as ADSL is a max of 8MB, so i would ring up Virgin or whoever and check the speed you should really be getting.

See these details posted on the netgear site, and you'll notice there is no mention of speed:-

Details About MTU
A packet sent to a device larger than its MTU is broken into pieces. Ideally, MTU would be set to the same — large — value on all your computers, routers and switches, as well as on all the parts of the Internet that you access. But you cannot control the MTU on the Internet, and in practice the optimum MTU size on your LAN is related to your hardware, software, wireless interference, etc.
  • Tweaking MTU size may work well in one situation, but cause performance and connection problems in others.
  • When network devices with different MTU settings communicate, packets are fragmented to accommodate the one with the smallest MTU.
  • Windows XP sets MTU automatically, that is, it optimizes computer MTU for you. This Microsoft article explains resolving lack of connection to a broadband ISP using Windows XP: How-To Configure Broadband Connections Using PPPoE.
  • Once a network device fragments a packet, the data stays fragmented until arriving at the destination computer.
Setting MTU size is a process of trial-and-error: start with the maximum value of 1500, then reduce the size until the problem goes away. Using one of these values is likely to solve problems caused by MTU size:
  • 1500. The largest Ethernet packet size; it is also the default value. This is the typical setting for non-PPPoE, non-VPN connections. The default value for NETGEAR routers, adapters and switches.
  • 1492. The size PPPoE prefers.
  • 1472. Maximum size to use for pinging. (Bigger packets are fragmented.)
  • 1468. The size DHCP prefers.
  • 1460. Usable by AOL if you don't have large email attachments, etc.
  • 1430. The size VPN and PPTP prefer.
  • 1400. Maximum size for AOL DSL.
  • 576. Typical value to connect to dial-up ISPs.

Nov 22, 2007 | Microsoft Windows XP Home Edition

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