IGMPLevel

HKLM\SYSTEM\CurrentControlSet\Services\Tcpip\Parameters

Data type Range Default value
REG_DWORD 0 | 1 | 2 2

Description

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 Image 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.