Tip & How-To about Computers & Internet

Increase DSL Internet speed

For Windows XP and Vista

HKLM\SYSTEM\CurrentControlSet\Services\Tcpip\ Parameters
EnablePMTUDiscovery DWORD 1
DefaultTTL DWORD 128
EnablePMTUBHDetect DWORD 0

For Win 98

DefaultTTL String 128
PMTUBlackHoleDetect String 0
PMTUDiscovery String 1
SackOpts String 1
Tcp1323Opts String 3

Note: Windows 95 users should first download and install the WinSock 2 update from Microsoft. Then follow the steps as mentioned for Win98.


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my router is set up correctly; however, i lose connectivity within about 25 minutes of being connected and online. when i try to reconnect, i am unable to connect and i cannot get connected without resetting the router and the modem.

Do you know how to access your router's setup page? If yes then setup the MTU on your router, for DSL use 1492, for Cable use 1500/1400/1300 (try which one will be best for you). If this may not work you may want to directly connect your computer to the modem and test if the connection there is stable.

If you do not know how to access the router's setup page, please provide me this information,what is the model number of the router and the operating system of your computer. Is your computer wired or wireless? is there a wired computer?

Apr 24, 2008 | Computers & Internet

1 Answer

How to enable IP routing

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Jan 07, 2011 | Microsoft Windows Vista Ultimate Edition

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