IP Multicast 29 4 29 4.1 Reverse Path Forwarding ....... 4.2 Internet Group Management Protocol 31 Truncated Broadcasting ........ 32 4.3 4.4 Distance Vector Multicast Routing Protocol (DVMRP) 34 4.5 Summary · ......................... 35 5 Multicast Extensions to Open Shortest Path First (MO- SPF) 39 5.1 High-level Description 39 Architecture ...... 40 5.2 5.2.1 Design Goals 41 Protocol Data Structures 41 5.2.2 5.3 Protocol. 44 52 5.4 Summary · ............ 6 Protocol Independent Multicast (PIM) 53 6.1 High-Level Description 53 54 6.2 Architecture . . . . . . . . . . . . . 6.2.1 Design Goals: ........ 54 6.2.2 Components and Functions 55 6.3 Protocol ............... 57 6.3.1 Creating the PIM framework 58 6.3.2 Creating a specific multicast tree for a group 59 6.3.3 Multicast data forwarding . . . . . . 64 6.3.4 Operation in a multi-access network 65 6.3.5 List of PIM messages 68 6.3.6 A complete example 69 6.4 Summary · ...... 69 7 Core-Based Tree (CBT) 73 7.1 High-level Description 73 7.2 Architecture . . . . . . 74 7.2.1 Design Goals: .

IP Multicast 29 4 29 4.1 Reverse Path Forwarding ....... 4.2 Internet Group Management Protocol 31 Truncated Broadcasting ........ 32 4.3 4.4 Distance Vector Multicast Routing Protocol (DVMRP) 34 4.5 Summary · ......................... 35 5 Multicast Extensions to Open Shortest Path First (MO- SPF) 39 5.1 High-level Description 39 Architecture ...... 40 5.2 5.2.1 Design Goals 41 Protocol Data Structures 41 5.2.2 5.3 Protocol. 44 52 5.4 Summary · ............ 6 Protocol Independent Multicast (PIM) 53 6.1 High-Level Description 53 54 6.2 Architecture . . . . . . . . . . . . . 6.2.1 Design Goals: ........ 54 6.2.2 Components and Functions 55 6.3 Protocol ............... 57 6.3.1 Creating the PIM framework 58 6.3.2 Creating a specific multicast tree for a group 59 6.3.3 Multicast data forwarding . . . . . . 64 6.3.4 Operation in a multi-access network 65 6.3.5 List of PIM messages 68 6.3.6 A complete example 69 6.4 Summary · ...... 69 7 Core-Based Tree (CBT) 73 7.1 High-level Description 73 7.2 Architecture . . . . . . 74 7.2.1 Design Goals: .

The Internet is quickly becoming the backbone for the worldwide information society of the future. Point-to-point communication dominates the network today, however, group communication--using multicast technology--will rapidly gain importance as digital, audio, and video transmission, push technology for the Web, and distribution of software updates to millions of end users become ubiquitous. Multicast Communication: Protocols and Applications explains how and why multicast technology is the key to this transition. This book provides network engineers, designers, and administrators with the underlying concepts as well as a complete and detailed description of the protocols and algorithms that comprise multicast.* Presents information on the entire range of multicast protocols, including, PIM-SM, MFTP, and PGM and explains their mechanisms, trade-offs, and solid approaches to their implementation* Provides an in-depth examination of Quality of Service concepts, including: RSVP, ST2, IntServ, and DiffServ* Discusses group address allocation and scoping* Discusses multicast implementation in ATM networks* Builds a solid understanding of the Mbone and surveys the successes and current limitations of real multicast applications on the Internet such as videoconferencing, whiteboards, and distance learning

A tutorial and complete description of the core concepts and real-world applications of IP multicast, one of the most effective solutions alleviating network congestion. The author, one of the key technologists in multicasting, describes a series of multicast applications and shows how they can be used to improve business processes and information dispersal without causing network infrastructure overload.

Get a clear picture of IP Multicast applications for delivering commercial high-quality video services This book provides a concise guide to current IP Multicast technology and its applications, with a focus on IP-based Television (IPTV) and Digital Video Broadcast-Handheld (DVB-H) applications—areas of tremendous commercial interest. Traditional phone companies can use IP Multicast technology to deliver video services over their networks; cell phone companies can use it to stream video to handheld phones and PDAs; and many cable TV companies are considering upgrading to IP technology. In addition to applications in industries seeking to provide high-quality digital video and audio, there are numerous other practical uses: multi-site corporate videoconferencing; broad distribution of financial data, stock quotes, and news bulletins; database replication; software distribution; and content caching (for example, Web site caching). After an introduction that gets readers up to speed on the basics, IP Multicast with Applications to IPTV and Mobile DVB-H: Discusses multicast addressing for payload and payload forwarding Covers routing in a variety of protocols, including PIM-SM, CBT, PIM-DM, DVMRP, and MOSPF Discusses multicasting in IPv6 environments and Multicast Listener Discovery (MLD) Features examples of IP Multicast applications in the IPTV and mobile DVB-H environments Includes reference RFCs and protocols placed in the proper context of a commercial-grade infrastructure for the delivery of robust, entertainment-quality linear and nonlinear video programming This is a concise, compact reference for practitioners who seek a quick, practical review of the topic with an emphasis on the major and most often used aspects of the technology. It serves as a hands-on resource for engineers in the communications industry or Internet design, content providers, and researchers. It's also an excellent text for college courses on IP Multicast and/or IPTV.

The definitive guide to designing and deploying Cisco IP multicast networks Clear explanations of the concepts and underlying mechanisms of IP multicasting, from the fundamentals to advanced design techniques Concepts and techniques are reinforced through real-world network examples, each clearly illustrated in a step-by-step manner with detailed drawings Detailed coverage of PIM State Rules that govern Cisco router behavior In-depth information on IP multicast addressing, distribution trees, and multicast routing protocols Discussions of the common multimedia applications and how to deploy them Developing IP Multicast Networks, Volume I, covers an area of networking that is rapidly being deployed in many enterprise and service provider networks to support applications such as audio and videoconferencing, distance learning, and data replication. The concepts used in IP multicasting are unlike any other network protocol, making this book a critical tool for networking professionals who are implementing this technology. This book provides a solid foundation of basic IP multicast concepts, as well as the information needed to actually design and deploy IP multicast networks. Using examples of common network topologies, author Beau Williamson discusses the issues that network engineers face when trying to manage traffic flow.Developing IP Multicast Networks, Volume I, includes an in-depth discussion of the PIM protocol used in Cisco routers and detailed coverage of the rules that control the creation and maintenance of Cisco mroute state entries. The result is a comprehensive guide to the development and deployment of IP multicast networks using Cisco routers and switches.

The last decade has seen a tremendous growth in the usage of the World Wide Web. The Web has grown so fast that it seems to be becoming an unusable and slow behemoth. Web caching is one way to tame and make this behemoth a friendly and useful giant. The key idea in Web caching is to cache frequently accessed content so that it may be used profitably later. This book focuses entirely on Web caching techniques. Much of the material in this book is very relevant for those interested in understanding the wide gamut of Web caching research. It will be helpful for those interested in making use of the power of the Web in a more profitable way. Audience and purpose of this book This book presents key concepts in Web caching and is meant to be suited for a wide variety of readers including advanced undergraduate and graduate students‚ programmers‚ network administrators‚ researchers‚ teachers‚ techn- ogists and Internet Service Providers (ISPs).