DiffServByteMappingNonConforming

HKLM\SOFTWARE\Policies\Microsoft\Windows\Psched

Description

The DiffServByteMappingNonConforming subkey stores entries that specify an alternate Differentiated Services Code Point (DSCP) value for service types specified in the per-flow flowspec. The Packet Scheduler inserts the corresponding DSCP value in the IP header of the packets. These entries apply only to packets that do not conform to the flow specification.

This subkey stores the entries created when you enable the policies in the DSCP value of non-conforming packets folder in Group Policy (Computer Configuration\Administrative Templates\Network\QoS Packet Scheduler). You can use these policies to override the default DSCP value used for packets of any recognized service type.

By default, the service type of all non-conforming packets have a DSCP value of 0x00, but these policies add entries to this subkey that override the default DSCP value used for packets of all recognized service types.

• If you enable the policies in the DSCP value of non-conforming packets folder, the system adds entries to this subkey with values you specify in the policy.
• If you disable the policies in the DSCP value of non-conforming packets folder or do not configure them, Group Policy deletes these entries from the registry, and the Packet Scheduler uses the default values.

All entries in this subkey have the following format:

For example, the entry that changes the DSCP value associated with the Guaranteed service type appears as follows.

The valid service types are as follows. ServiceTypeTcpTraffic applies to all conforming packets carrying TCP traffic, regardless of their service type.

• ServiceTypeBestEffort
• ServiceTypeControlledLoad
• ServiceTypeGuaranteed
• ServiceTypeNetworkControl
• ServiceTypeQualitative

Change method

To change the value of entries in this subkey, use Group Policy.

Note

The policy-related entries in this subkey are not included in the Administrative Template (.adm) files provided with Windows 2000. To use these entries, you must write a policy and then add it to a new or existing .adm file. For instructions, see Advanced topic: Creating custom .adm files in Windows 2000 Server Help.

The entries in this subkey apply to all network adapters on the computer. You can also change the DSCP values of packets on any particular network adapter by adding entries to the DiffServByteMappingNonConforming subkey in HKLM\SYSTEM\CurrentControlSet\Services\Psched\Parameters\Adapters\<Adapter-GUID>. If entries appear in the both locations in the registry, the adapter-specific entry takes precedence over the policy when configuring that particular adapter.

Tip

For detailed information about particular Group Policy settings, see the Group Policy Reference (Gp.chm) on the Windows 2000 Resource Kit companion CD.

For general information about Group Policy, see Group Policy in Windows 2000 Help.

To see a table associating policies with their corresponding registry entries, see the Group Policy Reference Table.

Related Entries

DiffServByteNonMappingConforming (<Adapter-GUID> subkey)

DiffServByteMappingConforming (Policies subkey)

DiffServByteMappingConforming (<Adapter-GUID> subkey)