Checksum Offload

Get help and discuss anything related to tweaking your internet connection, as well as the different tools and registry patches on the site. TCP Optimizer settings and Analyzer results should be posted here.
Post Reply
User avatar
KEiGHT
Regular Member
Posts: 131
Joined: Thu Feb 27, 2014 2:39 am
Location: Romania

Checksum Offload

Post by KEiGHT »

According to Microsoft;

*IPChecksumOffloadIPv4 IPv4 Checksum Offload > 0 = Disabled
Why in SG TCP Optimizer is Enabled: 0 ?

registry of Windows says:

"DisableTaskOffload"=dword:00000000

So? Is Enabled or Disabled !?

Why do you mix words ?
Every man has his destiny.
User avatar
akbarri
Posts: 935
Joined: Tue Dec 30, 2008 4:21 pm
Location: Caterpillar Inc

Post by akbarri »

*IPChecksumOffloadIPv4 is one of Offload Service Registry Key.
SG TCPO using Global TCP/IP Protocol Registry Key.

Code: Select all

HKEY_LOCAL_MACHINE\System\CurrentControlSet\Services\TCPIP\Parameters\DisableTaskOffload
Setting this value to [color="#FF0000"][B]one disables[/B][/color] all of the task offloads from the TCP/IP transport. Setting this value to [B][color="#FF0000"]zero enables[/color][/B] all of the task offloads.
Reff: botom page of http://msdn.microsoft.com/en-us/library ... s.85).aspx

# OS: Windows, Linux # Browser: Blink, Gecko, Presto, Webkit + Squid + Bind
User avatar
KEiGHT
Regular Member
Posts: 131
Joined: Thu Feb 27, 2014 2:39 am
Location: Romania

Post by KEiGHT »

Image

Now you see what I am talking about ? :) Image

Image

so there must be "enable: 1" ;) and disable: 0

HKEY_LOCAL_MACHINE\System\CurrentControlSet\Services\TCPIP\Parameters\DisableTaskOffload < For Windows 7
*Setting this value to one disables all of the task offloads from the TCP/IP transport. Setting this value to zero enables all of the task offloads.

HKEY_LOCAL_MACHINE\System\CurrentControlSet\Services\Ipsec\EnabledOffload < For Windows 2000/XP
*Setting this value to zero disables Internet protocol security (IPsec) offloads from the TCP/IP transport. The offloading of TCP/IP checksum tasks, large send offload version 1 (LSOV1),
and large send offload version 2 (LSOV2) are not affected. Setting this value to one enables IPsec offloads.

So there must be Written Enabled Offload or Disable Task Offload , why Checksum Offloading ? Most of the people have no idea what's for and are confused !
Every man has his destiny.
Post Reply