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A multicast session directory is a mechanism by which users can discover the existence of multicast sessions. In the Mbone, session announcements have also served as multicast address reservations - a dual purpose that is efficient, but which may cause some side-affects as session directories scale.

In this paper we examine the scaling of multicast address allocation when it is performed by such a multicast session directory. Despite our best efforts to make such an approach scale, this analysis ultimately reveals significant scaling problems, and suggests a new approach to multicast address allocation in the Internet environment.

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The referenced paper is in Computer Communication Review, a publication of ACM SIGCOMM, volume 28, number 4, October 1998. ISSN # 0146-4833.

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This paper is available in Postscript and Adobe Portable Document Format (PDF)

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