The Internet Protocol Journal - Volume 2, No. 4

From The Editor

From The Editor

In June 1992 when I was editor and publisher of ConneXions -The Interoperability Report , we published an article entitled "First IETF Internet Audiocast." Steve Casner and Steve Deering wrote: "The March Internet Engineering Task Force (IETF) meeting in San Diego was an exciting one for those interested in teleconferencing. In addition to several sessions on teleconferencing topics, we managed to pull off a 'wild idea' suggested by Allison Mankin from MITRE: live audio from the IETF site was 'audiocast' using IP multicast packet audio over the Internet to participants at 20 sites on three continents spanning 16 timezones."

Multicast has come a long way since 1992. Today, every IETF meeting features several live streams of not only audio but also video and slide presentations. Multicast continues to be developed in the IETF, as protocols and tools are being revised and refined. In two articles, Jon Crowcroft and Mark Handley describe the technologies behind multicast. The first article, included in this issue, looks at the current state of multicast. The second article, to appear in a future issue of IPJ, will look at the problems that need to be solved before multicast can become a truly scalable service for the Internet.

Research into new, high-speed networking technologies and applications is taking place in many parts of the world. One example of such a research effort can be found in the Internet2 Project. Larry Dunn describes some of the technology and application development being conducted by Internet2 members.

Interest in IP Version 6 (IPv6) is growing as organizations contemplate a world where millions of devices such as cellphones, PDAs, cable TV set top boxes and so on are "Internet Ready." The formation of the IPv6 Forum (www.ipv6forum.com ) is some indication of this interest. We will look at a particular IPv4-to-IPv6 transition strategy in our next issue. In the meantime, Peter Salus takes a historical look at Internet addressing in our series "One Byte at a Time."

And so we reach the end of 1999 and the end of Volume 2 of The Internet Protocol Journal . We wish you a pleasant holiday season and an uneventful transition to Y2K.

-Ole J. Jacobsen, Editor and Publisher ole@cisco.com You can download IPJ back issues and find subscription information at:
www.cisco.com/ipj