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Posted
on July 02, 2001 by Toby
Crundwell & Thomas
McGuire
Setting
MTU/TTL/RWIN
(Continued)
Now change the MTU
& TTL (Maximum segment size, or MSS is not
settable in Windows 9x/Me, it is automatically determined by your MTU so don't
waste time needlessly setting it). Take the following steps. NOTE
– If you only have a single modem in your PC, i.e. No Ethernet card installed
in your machine also, then you can skip to Step 5
as there should only be one key(s) available, 0000.
1.
You have to
find the details of your Dial-Up Adapter. Find the key [HKEY_LOCAL_MACHINE\Enum\Root\Net\000x] & within there will be
one or more sub-keys such as 0000, 0001, etc.
2.
Open each
key & find the one that contains the value of DeviceDesc
equal to Dial-Up Adapter.
3.
Within that
key there will also be another sub-key named Bindings.
Open the Bindings sub-key & you
will find a string named MSTCP\000x.
Take note of the four-digit number after MSTCP\
(in this case 0000) & use it in
the next step.
4.
Now go to
the key [HKEY_LOCAL_MACHINE\Enum\Network\MSTCP\000x]
& expand the sub-key with the same four-digit number as from the previous
step.
5.
In this key
you will find a value called Driver
& there will be an entry entitled NetTrans\000x.
Take note of the four-digit number & use it in the next step.
6.
Now open
[HKEY_LOCAL_MACHINE\System\CurrentControlSet\Services\
Class\NetTrans\000x]. Expand the key with the value equal to the four-digit
number from the previous step.
7.
Within this
key create a new string value named MaxMTU
& set it to your MTU (e.g. 1500), which you discovered in the MTU,
TTL & DefaultRcvWindow section.
8.
Next go into
[HKEY_LOCAL_MACHINE\System\CurrentControlSet\Services\
Class\Net\
000x\Ndi\params\IPMTU\enum], in here you will find entries for Automatic,
Large, Medium & Small.
Right click in the right hand side of the box & make a New
String Value equal to your MTU e.g. 1500,
right click on this new entry & select modify,
type in Automatic
then click Ok. Delete all the other
values there, e.g. Large - Small & the other Automatic (if any).
9.
Now open [HKEY_LOCAL_MACHINE\System\CurrentControlSet\Services\
Class\Net\000x]. Right click on IPMTU
& select modify, change this value to whatever your current MTU you (e.g.
1500).
10.
Go
into [HKEY_LOCAL_MACHINE\System\CurrentControlSet\
Services\Class\Net\0000\Ndi\params\IPMTU],
change the default value to your current MTU (e.g. 1500).
11.
Exit
the registry & restart your
computer for the changes to take effect.
You can
change the settings as necessary.
Timeouts
This tweak can reduce
the amount of Timeouts you may experience when online.
1.
Open
Regedit
(Click on Start,
Run,
type in regedit
& hit Enter),
go to [HKEY_LOCAL_MACHINE\System\CurrentControlSet\Services\Class\Net\000x].
Where x represents the folder with
the Slownet entry.
2.
In
the right hand pane, right click on Slownet
& select Modify,
change the value from 01
to 00.
Conclusion
Hopefully
now your connections will be quicker, downloads faster, ping times lower etc. If
you have any questions or comments feel free to email
us.
A
Printable version of this article can be found here.
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