© 2004 Cisco Systems, Inc. All rights reserved.

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  • This publication describes how Cisco has benefited from the deployment of its own products. Many factors may have contributed to the results and benefits described; Cisco does not guarantee comparable results elsewhere. CISCO PROVIDES THIS PUBLICATION AS IS WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESS OR IMPLIED, INCLUDING THE IMPLIED WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. Some jurisdictions do not allow disclaimer of express or implied warranties, therefore this disclaimer may not apply to you.
  • For an overwhelming graphical view of how complicated ASM is in relation to SSM when setting up the Multicast tree, check out http://wwwin.cisco.com/Mkt/events/nw/2001/presos/RoutingandSwitchingTechnologies/RST-222.ppt Slides 6 – 14 show ASM process Slides 124 – 127 show SSM process
  • For an overwhelming graphical view of how complicated ASM is in relation to SSM when setting up the Multicast tree, check out http://wwwin.cisco.com/Mkt/events/nw/2001/presos/RoutingandSwitchingTechnologies/RST-222.ppt Slides 6 – 14 show ASM process Slides 124 – 127 show SSM process
  • © 2004 Cisco Systems, Inc. All rights reserved.

    1. 1. [email_address] Case Study: IP Multicast: A Scalable Transport for Network-Based Broadcast Cisco Information Technology October 8, 2003
    2. 2. Overview <ul><li>Challenge: One-to-many real-time traffic needs </li></ul><ul><ul><li>Corporate meetings and videos </li></ul></ul><ul><li>Solution: Multicast – ASM and SSM </li></ul><ul><ul><li>Efficient one-to-many transport </li></ul></ul><ul><ul><li>Recently upgraded network to SSM </li></ul></ul><ul><li>Results: Multicast and SSM is a success </li></ul><ul><ul><li>Stable and usable within the network </li></ul></ul><ul><li>Next Steps: New applications </li></ul><ul><ul><li>Music on Hold and Info Cast </li></ul></ul>
    3. 3. Challenge: One-to-Many Real-Time Traffic Needs <ul><li>Corporate videos of meetings and training saved travel money, but were expensive </li></ul><ul><ul><li>Sending video tapes to remote sites – too much delay </li></ul></ul><ul><ul><li>Setting up switched digital circuits – too expensive </li></ul></ul><ul><li>Cisco ® IP/TV ® can send video across corporate WAN, but … </li></ul><ul><li>Corporate WAN could not manage thousands of video streams simultaneously </li></ul>Server Multiple Streams Without IP Multicast Router Multiple Data Streams Receivers
    4. 4. Solution: Multicast – ASM and SSM <ul><li>Multicast ASM (Any Source Multicast) – in use for 4 years </li></ul><ul><ul><li>Requires Internet Group Multicast Protocol (IGMP) v2 </li></ul></ul><ul><li>Multicast SSM (Single Source Multicast) deployed July 2003 </li></ul><ul><ul><li>Requires IGMP v3 </li></ul></ul><ul><li>All Cisco ® IP/TV ® , VoD training, video and audio streaming uses multicast in the WAN </li></ul>Server Router Single Data Stream Receivers Multiple Streams With IP Multicast
    5. 5. ASM and SSM <ul><li>Multicast SSM learns about sender IP address from the application; ASM learns from the Rendezvous Point router </li></ul><ul><li>Multicast ASM requires complex multicast group and tree setup process; SSM is much simpler </li></ul><ul><li>With ASM, multiple senders can send traffic within a multicast group, causing: </li></ul><ul><ul><li>Excess network traffic </li></ul></ul><ul><ul><li>Traffic collisions </li></ul></ul><ul><ul><li>Possible security concerns </li></ul></ul><ul><li>SSM migration increased stability of multicast sessions </li></ul>
    6. 6. ASM and SSM
    7. 7. Results: Multicast and SSM Is a Success <ul><li>Multicast is enabled and stable globally across 1035 routers </li></ul><ul><li>SSM deployment is complete, with no unplanned network downtime or stability issues </li></ul>
    8. 8. Next Steps: New Multicast Applications <ul><li>Multicast Music on Hold support </li></ul><ul><ul><li>Multicasting music on hold signal to multiple IP phones </li></ul></ul><ul><li>Info Cast support </li></ul><ul><ul><li>Multicasting corporate announcements to IP phone displays </li></ul></ul><ul><li>Continue to monitor technology and standards for new multicast enhancements </li></ul>
    9. 9. © 2003 Cisco Systems, Inc. All rights reserved. Presentation_ID This publication describes how Cisco has benefited from the deployment of its own products. Many factors may have contributed to the results and benefits described; Cisco does not guarantee comparable results elsewhere. CISCO PROVIDES THIS PUBLICATION AS IS WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESS OR IMPLIED, INCLUDING THE IMPLIED WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. Some jurisdictions do not allow disclaimer of express or implied warranties, therefore this disclaimer may not apply to you.

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