The UDP Multicast Tunneling Protocol

Document Type Expired Internet-Draft (individual)
Author Ross Finlayson 
Last updated 2003-11-24
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Expired & archived
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This Internet-Draft is no longer active. A copy of the expired Internet-Draft can be found at


Many Internet hosts - such as PCs - while capable of running multicast applications, cannot access the MBone (or other wide-area multicast network) because the router(s) that connect them to the Internet do not yet support IP multicast routing. The 'UDP Multicast Tunneling Protocol' (UMTP) enables such a host to establish an 'ad hoc' connection to the MBone by tunneling multicast UDP datagrams inside unicast UDP datagrams. By using UDP, this tunneling can be implemented as a 'user level' application, without requiring changes to the host's operating system.


Ross Finlayson (

(Note: The e-mail addresses provided for the authors of this Internet-Draft may no longer be valid.)