IT Solutions Technology Blog

   Recently we ran into issues when using the VMXNET3 driver and Windows Server 2008 R2 according to VMWare you may experience issues similar to – poor performance / packet loss / network latency / slow data Transfer – the issue may be caused by Windows TCP Stack offloading the usage of the network interface to the CPU

Netsh int tcp show global
Netsh int tcp set global RSS=Enabled
Netsh int tcp set global chimney=Disabled
Netsh int tcp set global autotuninglevel=Disabled
Netsh int tcp set global congestionprovider=None
Netsh int tcp set global ecncapability=Disabled
Netsh int ip set global taskoffload=Disabled
Netsh int tcp set global timestamps=Disabled
Netsh int tcp show global

If you find there is no change just reset to default

Netsh int tcp show global
Netsh int tcp set global RSS=Enabled
Netsh int tcp set global chimney=Automatic
Netsh int tcp set global autotuninglevel=Normal
Netsh int tcp set global congestionprovider=ctcp
Netsh int tcp set global ecncapability=Enabled
Netsh int ip set global taskoffload=Enabled
Netsh int tcp set global timestamps=Enabled
Netsh int tcp show global

This entry was posted on Samstag, September 21st, 2013 at 14:44 and is filed under Administration, Network Info, Technical Info, VMware Info, Windows Server 2008. You can follow any responses to this entry through the RSS 2.0 feed. You can leave a response, or trackback from your own site.