<!-- /* Font Definitions */ @font-face {font-family:"Cambria Math"; panose-1:2 4 5 3 5 4 6 3 2 4; mso-font-charset:1; mso-generic-font-family:roman; mso-font-format:other; mso-font-pitch:variable; mso-font-signature:0 0 0 0 0 0;} @font-face {font-family:Calibri; panose-1:2 15 5 2 2 2 4 3 2 4; mso-font-charset:161; mso-generic-font-family:swiss; mso-font-pitch:variable; mso-font-signature:-1610611985 1073750139 0 0 159 0;} @font-face {font-family:Verdana; panose-1:2 11 6 4 3 5 4 4 2 4; mso-font-charset:161; mso-generic-font-family:swiss; mso-font-pitch:variable; mso-font-signature:-1593833729 1073750107 16 0 415 0;} /* Style Definitions */ p.MsoNormal, li.MsoNormal, div.MsoNormal {mso-style-unhide:no; mso-style-qformat:yes; mso-style-parent:""; margin:0cm; margin-bottom:.0001pt; mso-pagination:widow-orphan; font-size:11.0pt; font-family:"Calibri","sans-serif"; mso-fareast-font-family:Calibri; mso-fareast-theme-font:minor-latin; mso-bidi-font-family:"Times New Roman";} a:link, span.MsoHyperlink {mso-style-noshow:yes; mso-style-priority:99; color:blue; text-decoration:underline; text-underline:single;} a:visited, span.MsoHyperlinkFollowed {mso-style-noshow:yes; mso-style-priority:99; color:purple; mso-themecolor:followedhyperlink; text-decoration:underline; text-underline:single;} .MsoChpDefault {mso-style-type:export-only; mso-default-props:yes; font-size:10.0pt; mso-ansi-font-size:10.0pt; mso-bidi-font-size:10.0pt;} @page Section1 {size:612.0pt 792.0pt; margin:72.0pt 90.0pt 72.0pt 90.0pt; mso-header-margin:36.0pt; mso-footer-margin:36.0pt; mso-paper-source:0;} div.Section1 {page:Section1;} --> Hello Forum users, Any advise on the following will be much appreciated. Preface: I have a customer who plans to disable offloading on all its NICS based on Method 2 listed in KB article #888750 at http://support.microsoft.com/kb/888750 . I have also provided him with article http://support.microsoft.com/kb/951037 which is subjected how to enable/disable TCP chimney offload in OS (Win2008) and NIC, but now he asks how can we check that TCP offload is disabled from both sides? (OS & NIC). Taking a look at the netsh int tcp show global parameters, doesnt seem to help: PS C:\Windows\system32> netsh int tcp show global Querying active state... TCP Global Parameters ---------------------------------------------- Receive-Side Scaling State : enabled Chimney Offload State : automatic NetDMA State : enabled Direct Cache Acess (DCA) : disabled Receive Window Auto-Tuning Level : normal Add-On Congestion Control Provider : none ECN Capability : disabled RFC 1323 Timestamps : disabled ** The above autotuninglevel setting is the result of Windows Scaling heuristics overriding any local/policy configuration on at least one profile. The netstat -t command gives more hope PS C:\Windows\system32> netstat -t Active Connections Proto Local Address Foreign Address State Offload State TCP 127.0.0.1:27015 PC00400:49460 ESTABLISHED InHost TCP 127.0.0.1:49157 PC00400:49158 ESTABLISHED InHost TCP 127.0.0.1:49158 PC00400:49157 ESTABLISHED InHost TCP 127.0.0.1:49460 PC00400:27015 ESTABLISHED InHost TCP 172.18.29.69:49446 home1:microsoft-ds ESTABLISHED InHost TCP 172.18.29.69:49461 mail1:epmap TIME_WAIT InHost TCP 172.18.29.69:49462 mail1:30023 ESTABLISHED InHost TCP 172.18.29.69:49466 mail1:epmap TIME_WAIT InHost Any further comment or advise will be much appreciated. Thanks in advance for your time Rgds, Nick.

Hi, Thank you for your post here. The TCP Chimney Offload will work only if it is enabled in both OS and NIC. To check whether TCP Chimney Offload is disabled we have to check on both places. Operation system: Run the "netsh int tcp show global" and check the "Chimney Offload State" value. "automatic" - This setting has not been configured manually. It offloads if the connection is 10 GbE, has an RTT < 20ms, and the connection has exchanged at least 130KB of data. The device driver must also have TCP Chimney enabled. "disabled" - This is setting is manually configured as Disabled. "enabled" - This is setting is manually configured as Enabled. Adapter: This setting is specific for a particular NIC. Different manufacturers may use different terms to describe TCP Chimney Offload on the Advanced properties page of the network adapter. Open Device Manager. Under Network Adapters, double-click the network adapter that you want. On the Advanced tab, click Enabled or Disabled in the box next to the TCP offload entry. In conclusion, when either the "Chimney Offload State" value is "disabled" or the TCP offload entry for the NIC is "Disabled", the TCP Offloading is disabled. If you have any questions or concerns, please do not hesitate to let me know.

Thanks for your clarifications and response. Rgds, Nick.

thanx miles... can you tell me what is the diff between cpanel and plesk? and which is prefered most. __________________ http://www.utiliware.com/

hai....... An operating system (OS ) is software consisting of programs and data, that runs on computers and manages the computer hardware and provides common services for efficient execution of various application software. In computer programming, the adapter pattern (often referred to as the wrapper pattern or simply a wrapper ) is a design pattern that translates one interface for a class into a compatible interface. An adapter allows classes to work together that normally could not because of incompatible interfaces, by providing its interface to clients while using the original interface. Managed Network Services