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EnableMulticastForwarding

HKLM\SYSTEM\CurrentControlSet\Services\Tcpip\Parameters

Data type

Range

Default value

REG_DWORD

0 | 1

0

Description

Determines whether the computer forwards IP multicasts.

Multicasting enables hosts to send a datagram to multiple recipients in a single operation. To receive multicasts, recipients join a host group that 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. The computer does not forward IP multicasts.

1

Enabled. The computer forwards IP multicasts.

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.

This entry is used only when Routing and Remote Access Service is enabled on this system.

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