I am attempting to affect the DSCP value of some packets that leave my 2008R2 server. To test, I am hitting an echo server (TCP, port 7) on a system that is on the same broadcast network (no routes to get there).
A QoS group policy is in place.
I have tried with and without HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\services\Tcpip\QoS, "Do not use NLA" set to "1".
The network adapter has "QoS Packet Scheduler" installed and enabled.
This system is not part of a Microsoft domain.
I have issued "gpupdate /force".
All Microsoft updates are applied as of the morning of 2013-05-16.
No matter what the configuration has been, sniffing the packets on the target system reveals that the DSCP value is always 0. However, I did have success with using a QoS policy to control the outbound throttle rate.
Any ideas?