Enabling ECN (Explicit Congestion Notification) in Vista

I was made aware of this "secret" advanced networking feature in Vista and
found several Microsoft pages on how to enable it. Does anyone know enough
about this to know if turning it on will help my network performance in any
way? I tested my home router and it supports ECN. The documentation online
indicates that some routers kill ECN marked packets because they don't
recognize bits in that position. But since I know that my home router
supports this feature, is there any reason why I should not enable this
advanced networking feature?

Any advice is greatly appreciated.

Thanks!

- John

Can anyone tell me where to enable/disable the ECN in Vista. John you seem to
have find those 'secrets'. thanks for sharing.
--
regards
Joris


"John Adams" wrote:

> I was made aware of this "secret" advanced networking feature in Vista and
> found several Microsoft pages on how to enable it. Does anyone know enough
> about this to know if turning it on will help my network performance in any
> way? I tested my home router and it supports ECN. The documentation online
> indicates that some routers kill ECN marked packets because they don't
> recognize bits in that position. But since I know that my home router
> supports this feature, is there any reason why I should not enable this
> advanced networking feature?
>
> Any advice is greatly appreciated.
>
> Thanks!
>
> - John
>

use this command from an elevated cmd prompt:

netsh interface tcp set global ecncapability=enabled

On Mon, 5 May 2008 19:48:00 -0700, Joris Claeys
<JorisClaeys@discussions.microsoft.com> wrote:

>Can anyone tell me where to enable/disable the ECN in Vista. John you seem to
>have find those 'secrets'. thanks for sharing.
--

Barb Bowman
MS-MVP
http://www.microsoft.com/windowsxp/e...ts/bowman.mspx
http://blogs.digitalmediaphile.com/barb/

Open a command prompt as an adminstrator or you will get an error that request needs to be elevated.

Type "netsh int tcp show global"
this will show your current TCP/IP state

To enable ECN, in command prompt type:
"netsh int tcp set global ecncapability=enabled"

To enable CTCP (Compound TCP)in command prompt type:
"netsh int tcp set global congestionprovider=ctcp"

To verify changes Type "netsh int tcp show global"

Hope this helps

Jim

Thanks Barb and Jim for the assistance. I will get to that once I got out of
my current mess of BSOD's (other thread).
--
regards
Joris


"James OHara" wrote:

> Open a command prompt as an adminstrator or you will get an error that request needs to be elevated.
>
> Type "netsh int tcp show global"
> this will show your current TCP/IP state
>
> To enable ECN, in command prompt type:
> "netsh int tcp set global ecncapability=enabled"
>
> To enable CTCP (Compound TCP)in command prompt type:
> "netsh int tcp set global congestionprovider=ctcp"
>
> To verify changes Type "netsh int tcp show global"
>
> Hope this helps
>
> Jim
>
>
>
>
>