NoteHKLM\SYSTEM\CurrentControlSet\Services\Psched\Parameters\Adapters\<Adapter-GUID>\
The UserPriorityMapping subkey stores entries that specify an alternate link layer (Layer-2) priority value for service types specified in the per-flow flowspec. The Packet Scheduler inserts the link layer priority value in the Layer-2 priority header of packets. These entries apply only to packets that conform to the flow specification.
This subkey can also contain an entry, ServiceTypeTcpTraffic, that assigns a default Layer-2 priority value to packets carrying TCP traffic. Despite its name, this entry does not pertain to packets of any particular service type. This entry applies only to TCP packets that have not otherwise been classified to a flow.
This subkey does not appear by default, but you can add it to the registry to override the default priority value for unclassified TCP traffic or packets of any recognized service type.
All entries in this subkey must have the following format:
| Entry name | Data type | Value |
|---|---|---|
| <Service-type> | REG_DWORD | 0 - 7 |
For example, to change the priority value associated with the Guaranteed service type, add the UserPriorityMapping subkey, then add the following entry to the UserPriorityMapping subkey.
| Entry name | Data type | Value |
|---|---|---|
| ServiceTypeGuaranteed | REG_DWORD | 6 |
The following table shows the priority values assigned when no entries appear in this subkey. ServiceTypeNonConforming applies to all packets that do not conform to the flow specification. ServiceTypeTcpTraffic applies to packets carrying unclassified TCP traffic.
| Value | Meaning |
|---|---|
| ServiceTypeNonConforming | 1 |
| ServiceTypeBestEffort | 0 |
| ServiceTypeControlledLoad | 4 |
| ServiceTypeGuaranteed | 5 |
| ServiceTypeNetworkControl | 7 |
| ServiceTypeQualitative | 0 |
| ServiceTypeTcpTraffic | 0 |
Note
Windows 2000 does not add this entry to the registry. You can add it by editing the registry or by using a program that edits the registry.
The entries in this subkey take precedence over a policy included in Windows 2000. For more information, see UserPriorityMapping (Policies subkey).
Related Entries
UserPriorityMapping (Policies subkey)