Framework of Overlay Multicast Control Protocol

Document Type Expired Internet-Draft (individual)
Author Seok Koh 
Last updated 2003-02-07
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This Internet-Draft is no longer active. A copy of the expired Internet-Draft can be found at


This document describes Overlay Multicast Control Protocol (OMCP) used for realizing and managing Overlay Multicast, as also known as Application Layer Multicast. Overlay Multicast is a data delivery scheme for multicast applications, in which one or more intermediate relay agents are employed for relaying application data from a sender to many receivers along a pre-configured or automatically configured tree hierarchy. For standardization of Overlay Multicast, it needs to separate the data plane (for packet relaying) and the control plane (for tree configuration and session monitoring). We describe a control protocol for Overlay Multicast, named Overlay Multicast Control Protocol (OMCP). In OMCP, a special-purpose entity, called Session Manager, is used to manage and control the tree configuration and session monitoring. OMCP is designed to ensure that the multicast applications and services can be provided over current Internet environments in which IP multicast has not completely been deployed.


Seok Koh (

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