Skip to content

Optimizing Your DSL Connection

February 8, 2013

Open your registry and find the key below. Create the following DWORD values, as most of these values will not already exist you will need to create them by clicking on ‘Edit -> New -> DWORD Value’ and then set the value as shown below.

DefaultTTL = “80” hex (or 128 decimel)
___________________________________________________________
Specifies the default time to live (TTL) for TCP/IP packets.
The default is 32.

EnablePMTUBDetect = “0”
___________________________________________________________
Specifies whether the stack will attempt to detect Maximum Transmission Unit (MTU) routers that do not send back ICMP framentation-needed messages.
The default is 0.

EnablePMTUDiscovery = “1”
___________________________________________________________
Specifies whether the TCP/IP stack will attempt to perform path MTU discovery as specified in RFC 1191.
The default is 1.

GlobalMaxTcpWindowSize = “7FFF” hex (or 32767 decimal)
___________________________________________________________
Specifies the system maximum receive window size advertised by the TCP/IP stack.

TcpMaxDupAcks = “2”
___________________________________________________________
Determines the number of duplicate ACKs that must be received for the same sequence number of sent data before “fast retransmit” is triggered.

SackOpts = “1”
___________________________________________________________
Enables support for selective acknowledgements as documented by Request for Comment (RFC) 2018.
The default is 0.

Tcp13230pts = “1”
___________________________________________________________
Controls RFC 1323 time stamps and window scaling options.
Possible values are: “0” = disable RFC 1323 options, “1” = window scale enabled only, “2” = time stamps enabled only and “3” = both options enabled.

TcpWindowSize = “7FFF” hex (or 32767 decimal)
___________________________________________________________
Specifies the receive window size advertised by the TCP/IP stack. If you have a latant network you can try increasing the value to 93440, 186880, or 372300.

Exit your registry and restart Windows for the changes to take effect.

 

About these ads

From → Internet

Leave a Comment

Leave a Reply

Fill in your details below or click an icon to log in:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out / Change )

Twitter picture

You are commenting using your Twitter account. Log Out / Change )

Facebook photo

You are commenting using your Facebook account. Log Out / Change )

Google+ photo

You are commenting using your Google+ account. Log Out / Change )

Connecting to %s

Follow

Get every new post delivered to your Inbox.

%d bloggers like this: