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Author Topic: A Caution - Vista & VA11A  (Read 2127 times)

PajamaGuy

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A Caution - Vista & VA11A
« on: January 03, 2008, 07:15:01 AM »

For those of you who have Vista AND have had previous trouble with the TCP AutoTuning - Something in the install of either the VA11A or Vanguard resets the TCP Autotuning. 
For a fair amount of Vista users, the "Normal" TCP Autotuning parameter causes loss of IP connections - therefor frequent network disconnects.  Setting the Autotuning to "disabled" cured the problem.  During the unsuccessful attempts to install the VA11A and Vanguard, the problem resurfaced and I found the parameter "Normal"

Check the state or current setting of TCP Auto-Tuning
1.   Open elevated command prompt with administrator’s privileges. (right-click cmd and Run as Administrator)
2.   Type the following command and press Enter:
netsh interface tcp show global
The system will display the following text on screen, where you can check on the Auto-Tuning setting:
Querying active state…
TCP Global Parameters
———————————————-
Receive-Side Scaling State : enabled
Chimney Offload State : enabled
Receive Window Auto-Tuning Level : normal
Add-On Congestion Control Provider : none
ECN Capability : disabled
RFC 1323 Timestamps : disabled
Disable TCP Auto-Tuning
1.   Open elevated command prompt with administrator’s privileges.
2.   Type the following command and press Enter:
netsh interface tcp set global autotuning=disabled
Enable TCP Auto-Tuning
1.   Open elevated command prompt with administrator’s privileges.
2.   Type the following command and press Enter:
netsh interface tcp set global autotuning=normal
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PajamaGuy
Win-7 - Dell XPS -Automation
VA12a on a dedicated desktop - Video
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