Specify the Conformance Level for IP Multicast (Windows NT/2000/XP)
Category: Home > Network > Protocols > TCP-IP
This parameter determines to what extent the system supports IP multicasting and participates in the Internet Group Management Protocol, RFC 1112.
There are three levels or conformance:
- Level 0: no support for IP multicasting
- Level 1: support for sending but not receiving multicast IP datagrams
- Level 2: full support for IP multicasting
Open your registry and find the key below.
Create a new DWORD value called "IGMPLevel" and set it to either 0, 1 or 2 accord to the level required above.
Restart Windows for the change to take effect.
 |  |  |  |  |
|  | (Default) | REG_SZ | (value not set) | |
|  | IGMPLevel | REG_DWORD | 0x00000002 (2) | |
 |
| HKEY_LOCAL_MACHINE\System\CurrentControlSet\Services\Tcpip\Parameters |  |
 |
| Settings: |
System Key: [HKEY_LOCAL_MACHINE\System\CurrentControlSet\Services\Tcpip\Parameters]
Name: IGMPLevel
Type: REG_DWORD (DWORD Value)
Value: 0, 1 or 2 (Default = 2)
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Related Tweaks
Disclaimer: Modifying the registry can cause serious problems that may require you to reinstall your operating system. We cannot guarantee that problems resulting from modifications to the registry can be solved. Use the information provided at your own risk.
Last Modified: August 20, 2002
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