This document defines the "administratively scoped IPv4 multicast space" to be the range 239.0.0.0 to 239.255.255.255. In addition, it describes a simple set of semantics for the implementation of Administratively Scoped IP Multicast. Finally, it provides a mapping between the IPv6 multicast address classes [RFC1884] and IPv4 multicast address classes. This memo is a product of the MBONE Deployment Working Group (MBONED) in the Operations and Management Area of the Internet Engineering Task Force. Submit comments to or the author. 2. Acknowledgments Much of this memo is taken from "Administratively Scoped IP Multicast", Van Jacobson and Steve Deering, presented at the 30th IETF, Toronto, Canada, 25 July 1994. Steve Casner, Mark Handley and Dave Thaler have also provided insightful comments on earlier versions of this document.

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Status of this Memo This memo provides information for the Internet community. It does not specify an Internet standard of any kind. Distribution of this memo is unlimited.

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This document describes how inter-domain multicast routing will function in an environment where Locator/ID Separation is deployed using the Locator/ID Separation Protocol (LISP) architecture.