Belkin N1 Expresscard with DLink DIR-615

I was supplied with a DLink DIR-615 router as part of my Virgin Media package. Tried connecting my personal laptop using a Belkin N1 Express card (F5D8071), but it just wasn't happy. This same card would connect with a Belkin Vision N1 quite happily (surprise, surprise).

Anyway, I downloaded the Vista drivers and they worked fine. Find them here:
http://en-us-support.belkin.com/app/answers/detail/a_id/468

My card was the 3000 version.

D-Link DCS-6620G - HTTP 400 Bad Request

After the install of Silverlight - My D-Link DCS-6620G camera started returning HTTP 400 Bad Request errors.

After a bit of investigation, I found this:
http://silverlight.net/forums/p/7452/77779.aspx

Locating the key, HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Accepted Documents, I removed a couple of XML document type I figured that I would never use.
Everything now works fine.

Poor performance with D-Link DCS-6620G and Microsoft Windows Vista - Solved

I recently bought a D-Link DCS-6620G IP camera to replace a failed Panasonic one. I found the performance to be terrible. After running a network capture I discovered the following:

My Vista desktop would send two TCP SYN requests with ECN and CWR flags set.
The camera would resond to each of these with a TCP RST.
My Vista desktop would then send a TCP SYN request without ECN and CWR flags and the camera would then respond normally.

This problem also meant that I could not add the camera to D-Link D-ViewCam Monitor as the request to add a camera failed with an unable to connect message.

After a bit of reading, I discovered the CWR and ECN flags were being set because I had ECN enabled in my IP stack. I verified this by running:

netsh interface tcp show global
Querying active state...
TCP Global Parameters
----------------------------------------------
Receive-Side Scaling State          : enabled
Chimney Offload State               : disabled
Receive Window Auto-Tuning Level    : disabled
Add-On Congestion Control Provider  : none
ECN Capability                      : enabled
RFC 1323 Timestamps                 : disabled

Running the following, disabled the setting:

netsh interface tcp set global ecncapability=disabled
Ok.

And...

netsh interface tcp show global
Querying active state...
TCP Global Parameters
----------------------------------------------
Receive-Side Scaling State          : enabled
Chimney Offload State               : disabled
Receive Window Auto-Tuning Level    : disabled
Add-On Congestion Control Provider  : none
ECN Capability                      : disabled
RFC 1323 Timestamps                 : disabled

The camera is now working very well.