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 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 does not appear by default, but you can add it to the registry to override the default priority value for packets of any recognized service type. By default, a DCSP value of 0x00 is used for all non-conforming packets.

All entries in this subkey must have the following format:

Entry name Data type Value
<Service-type> REG_DWORD 0x0 - 0x3F

For example, to change the DSCP value associated with the Guaranteed service type, add the DiffServByteMappingNonConforming subkey, then add the following entry to the DiffServByteMappingNonConforming subkey.

Entry name Data type Value
ServiceTypeGuaranteed REG_DWORD 0x20

The valid service types are as follows

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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 Group Policies that apply to packets carried by all network adapters on this computer. For more information, see DiffServByteMappingNonConforming (Policies subkey).

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