First IETF internet audiocast

Casner, S.; Deering, S.

doi:10.1145/142267.142338

Cited by 148 publications

(53 citation statements)

References 8 publications

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“…The deployment has reached a wide portion of the Internet -users across multiple continents, in home, academic and commercial environments, and behind various access technologies. We believe this demonstrates some of the enormous deployment potential of overlay multicast architectures -in contrast, the usage of the MBone [4] was primarily restricted to researchers in academic institutions. Decoupling development version from deployment version: One of the challenges associated with operational deployment is the need for robust, well-tested and stable code.…”

Section: Deployment Experiencementioning

confidence: 97%

Early Experience with an Internet Broadcast System Based on Overlay Multicast

et al. 2003

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Public reporting burden for the collection of information is estimated to average 1 hour per response, including the time for reviewing instructions, searching existing data sources, gathering and maintaining the data needed, and completing and reviewing the collection of information. Keywords: overlay networks, Internet evaluation, peer-to-peer, multimedia broadcast AbstractIn this paper, we report on experience in building and deploying an operational Internet broadcast system based on Overlay Multicast. In over a year, the system has been providing a cost-effective alternative for Internet broadcast, used by over 3600 users spread across multiple continents in home, academic and commercial environments. Technical conferences and special interest groups are the early adopters. Our experience confirms that Overlay Multicast can be easily deployed and can provide reasonably good application performance. The experience has led us to identify first-order issues that are guiding our future efforts and are of importance to any Overlay Multicast protocol or system. Our key contributions are (i) enabling a real Overlay Multicast application and strengthening the case for overlays as a viable architecture for enabling group communication applications on the Internet, (ii) the details in engineering and operating a fully functional streaming system, addressing a wide range of real-world issues that are not typically considered in protocol design studies, and (iii) the data, analysis methodology, and experience that we are able to report given our unique standpoint.

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Section: Deployment Experiencementioning

confidence: 97%

Early Experience with an Internet Broadcast System Based on Overlay Multicast

et al. 2003

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“…Before having a multimedia session, information is announced to receivers including what the session is about, media types, bandwidth, duration, etc. One of the announcement techniques that has been used since the original MBone is to send this information to a well-known multicast address [26]. This session announcement method is based on the soft-state concept.…”

Section: Motivationmentioning

confidence: 99%

Application layer reachability monitoring for IP multicast

Sarac

Almeroth

2005

Computer Networks

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Abstract-Monitoring and management have become key requirements for the success of multicast deployment in the Internet. One of the most important monitoring tasks for multicast is to verify the availability of service in the network. This task is usually referred to as reachability monitoring. In this paper, we present an application layer multicast reachability monitoring system called sdr-monitor. Sdrmonitor has emerged in response to the practical need of verifying service availability and detecting potential problems during the early years of native multicast deployment in the inter-domain. Sdr-monitor leverages an existing application and provides close to real-time reachability monitoring for the multicast infrastructure. Since its initial deployment in 1998, sdr-monitor has been serving the multicast community in detecting and correcting multicast reachability problems in the Internet. In addition, sdr-monitor pioneered a number of additional research projects in multicast monitoring and management. In this paper, we first present the architecture of the sdr-monitor system and its outputs. Then, by using a four-year reachability monitoring data set, we present a long term analysis of the reachability characteristics of the multicast infrastructure. Next, by using additional network layer information, we classify reachability problems. Finally, we evaluate sdr-monitor as a reachability monitoring system and identify a number of ways in which it could be improved.

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“…Two of the most important questions we asked when beginning our analysis were: (1) what should we collect, and (2) what metrics should be the focus of our analysis. In this section, we describe these two aspects of our analysis efforts.…”

Section: Analysis Fundamentalsmentioning

confidence: 99%

“…The first deployment of multicast took place in 1992 [1], [2]. In the early years, the Distance Vector Multicast Routing Protocol (DVMRP) [3] was the dominant protocol for routing.…”

Section: Introductionmentioning

confidence: 99%

Analysis of routing characteristics in the multicast infrastructure

Rajvaidya

Almeroth

2003

IEEE INFOCOM 2003. Twenty-Second Annual Joint Conference of the IEEE Computer and Communications Societies (IEEE Cat. No.03CH37

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Abstract-As the multicast-capable part of the Internet continues to evolve, important questions to ask are whether the protocols are operating correctly, the topology is well connected, and the routes are stable. A critical step in being able to answer these questions is to monitor the traffic and network operation.In this paper, we analyze characteristics of the multicast infrastructure over the last three years using monitoring data collected from several key routers. Specifically, we focus on analyzing two characteristics of the infrastructure: size and stability. The size analysis focuses on counting the number of connected hosts and networks, and analyzing how the size of the infrastructure has changed over past three years. Second, the stability analysis focuses on examining persistence, prevalence, and visibility of routes across the topology. From our analyses, we identify a number of problems with multicast routing and their effect on the connectivity of certain multicast networks. Moreover, we offer insight into the evolution and future of multicast in the Internet.

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First IETF internet audiocast

Cited by 148 publications

References 8 publications

Early Experience with an Internet Broadcast System Based on Overlay Multicast

Early Experience with an Internet Broadcast System Based on Overlay Multicast

Application layer reachability monitoring for IP multicast

Analysis of routing characteristics in the multicast infrastructure

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