Ch07 IP Multicast

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  © 2006, Cisco Systems, Inc. All rights reserved.Presentation_ID.scr 1 Cisco Networking Academy ProgramCCNPSWITCH: Implementing IP Switching Chapter 7: Preparing the Campus for Advanced Services  © 2006, Cisco Systems, Inc. All rights reserved.Presentation_ID.scr  ãThe demand is increasing for Internet, intranet, and multimedia applications in which one sender transmits to a group of receivers simultaneously. Examples of these applications include the following:ãTransmitting a corporate message to all employeesãBroadcasting video and audio, including interactive video for distance learning and IPTVãTransmitting data from a centralized data warehouse to multiple departmentsãCommunicating stock quotes to brokersãComputing collaborativelyãAlgorithmic trading floor applications using cloud computingãSubsequently, using IP multicast instead of unicast to distribute this information reduces the overall network load and bandwidth consumption. This is a result of IP multicast’s simultaneous distribution of an IP data frame to a host group that is defined by a single multicast IP address, or flow. To accomplish this same distribution with unicast would require the source to send a unicast frame to each host independently.ã Note: Multicast reduces overall network load and bandwidth by distributing traffic to multiple end users simultaneously.ãThe following slides discuss IP multicast routing and its inherent advantages, functionality, and configuration in campus network. We begin with an introduction to multicast and then discuss the fundamentals of the IP multicast. We also discuss the important Layer 3 and Layer 2 multicast protocols and the design recommendations for deploying multicast in multilayer switched networks. 2  © 2006, Cisco Systems, Inc. All rights reserved.Presentation_ID.scr 3  © 2006, Cisco Systems, Inc. All rights reserved.Presentation_ID.scr 4
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