NoteHKLM\SYSTEM\CurrentControlSet\Services\Tcpip\Parameters
| Data type | Range | Default value |
|---|---|---|
| REG_DWORD | 0 | 1 | 0 |
Determines whether this computer forwards IP multicasts.
Multicasting enables hosts to send a datagram to multiple recipients in a single operation. To receive multicasts, the recipients join a host group which has a single IP destination address.
IP multicasts are forwarded across networks by multicast routers that reside with, or are separate from, Internet gateways. The originating host transmits the IP multicast datagram as a local network multicast to all immediately-neighboring members of the destination host group. Then, multicast routers on the local network forward the datagram to all other networks.
| Value | Meaning |
|---|---|
| 0 | Disabled. This computer does not forward IP multicasts. |
| 1 | Enabled. This computer forwards IP multicasts. |
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.
This entry is used only when Routing and Remote Access Service (RRAS) is enabled on this system.