DSL Speed Setting in Windows XP
The
default Maximum Transmission Unit (MTU) size for PPPoE (DSL)
connections in Windows XP is typically set to 1,480 or 1,490 bytes.
However if find you can’t browse some Web sites or send e-mail
messages with attachments, your DSL connection may work better with a
slightly lower MTU size setting (somewhere between 1,400 to 1,490).
You can refer to another for information on how to test out what MTU
size is best for your Internet connection.
To
edit the MTU size in Windows XP, you must first add the following
keys to the Windows Registry:
Hive:
HKEY_LOCAL_MACHINE
Key:
System\CurrentControlSet\Services\Ndiswan\Parameters\Protocols\
Hive:
HKEY_LOCAL_MACHINE
Key:
System\CurrentControlSet\Services\Ndiswan\Parameters\Protocols\0
Then
add the following entries to the 0 key:
Name:
ProtocolType
Type: REG_DWORD
Value: 0x00000800
Name:
PPPProtocolType
Type: REG_DWORD
Value: 0x00000021
Name:
ProtocolMTU
Type: REG_DWORD
Value: desired MTU size
