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TCP Offloading Never Works For Me?

Tags:
  • NICs
  • Netsh
  • Command Prompt
  • TCP/IP
  • Components
Last response: in Components
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June 27, 2012 4:21:07 PM

I am interesting in trying TCP Offloading, but I have yet to see visible proof that it ever worked.

Following the guide here tells me that in order to enable the feature, I have to enter
  1. netsh int tcp set global chimney=enabled

in a (administrative) Command Prompt. Doing this gives me an Ok. and then I restart.


I have every offload option enabled in the device settings:


And netsh is reporting the option enabled (Chimney Offload State):


But every entry that appears when I type netstat -t is always InHost, never Offloaded


Anyone have any ideas as to what is wrong here? I'm on Windows 7 x64 SP1 with all updates.

More about : tcp offloading works

June 27, 2012 9:49:31 PM

Nic needs to have Chimney offload supported and enabled.
Windows firewall service and base filtering engine need to be running.
Also some applications block offloading such as IPSec Policy, Nic failover service or fault tolerant driver or teaming, NAT, ICS, and some aftermarket Firewalls.
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