NoteHKLM\SYSTEM\CurrentControlSet\Services\Tcpip\Parameters
| Data type | Range | Default value |
|---|---|---|
| REG_DWORD | 0 | 1 | 2 | 2 |
Determines the extent to which the system supports IP multicasting and participates in the Internet Group Management Protocol.
| Value | Meaning |
|---|---|
| 0 | No multicast support. |
| 1 | Send IP multicast packets only. |
| 2 | Send and receive IP multicast packets (participate in IGMP). |
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.