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Best Practices for Video Transit on an MPLS Backbone Debbie Montano email@example.com Oct 7, 2009 1 | Copyright © 2009 Juniper Networks, Inc. | www.juniper.net Debbie Montano Joined Juniper - supporting R&E Community Debbie Montano Chief Architect Government, Education & Medical Juniper Networks firstname.lastname@example.org Office: 303 985 0744 Cell: 303 378 9762 www.juniper.net 2 | Copyright © 2009 Juniper Networks, Inc. | www.juniper.net Using Point-to-multipoint Label Switched Paths to Simplify and Optimize IP Video Distribution Debbie Montano email@example.com 3 | Copyright © 2009 Juniper Networks, Inc. | www.juniper.net IP/MPLS for Converging Services Innovative new technology -- point-to-multipoint label switched paths (LSPs) -- efficiently carry broadcast video (IPTV) traffic across an IP backbone Distribute IPTV traffic across a private network or within a virtual private network (VPN) MPLS: technology of choice for converging services – tools to support the transport of all types of video – video on demand (VoD) to interactive multimedia and broadcast television Vision for the evolution of networks – open, next-generation network core… securely and reliably support all communications applications, from any origin to any destination, at any time 4 | Copyright © 2009 Juniper Networks, Inc. | www.juniper.net Advantages of MPLS Supports wide variety of services across a common backbone, including VPNs, voice, Internet access, and video services ATM and SONET/SDH become inefficient for delivering this traffic to a wide number of endpoints – ATM and SONET/SDH were not designed to support IP multicast, which is the underlying technology used to deliver broadcast television channels Native IP forwarding lacks path control & deterministic resiliency MPLS provides traffic engineering and rapid failure recovery across IP routing devices on par with SONET/SDH – led to the rapid adoption of MPLS 5 | Copyright © 2009 Juniper Networks, Inc. | www.juniper.net What is MPLS? Multiprotocol Label Switching (MPLS) – directs and carries data from one network node to the next. Use MPLS to create "virtual links" between distant nodes. It can encapsulate packets of various network protocols. – highly scalable, protocol agnostic, data-carrying mechanism. In an MPLS network, data packets are assigned labels. Packet-forwarding decisions are made solely on the contents of this label, without the need to examine the packet itself. – Can create end-to-end circuits across any type of transport medium, using any protocol. – eliminates dependence on a particular Data Link Layer technology, such as ATM, frame relay, SONET or Ethernet and eliminates need for multiple Layer 2 networks to satisfy different types of traffic. Label Switch Paths (LSPs) – Used to create network-based IP Virtual Private Networks or to route traffic along specified paths through the network. Similar to PVCs in ATM or Frame Relay networks, except not dependent on a particular Layer 2 technology. 6 | Copyright © 2009 Juniper Networks, Inc. | www.juniper.net Point-to-multipoint LSP Solution lack of replication capabilities with LSPs has hindered the use of IP/MPLS for video transport. Without replication, MPLS LSPs cannot use network resources efficiently. Point-to-multipoint LSP solution retains the traffic engineering and availability benefits of MPLS while providing replication without the overhead of multicast routing. part of larger suite of technologies to handle video transport across the backbone point-to-multipoint solution efficiently replicates IPTV and other broadcast video traffic from one main content distributor to multiple destinations, local studios or head-ends 7 | Copyright © 2009 Juniper Networks, Inc. | www.juniper.net Historical Video Distribution Video distribution has been handled by terrestrial ATM or SONET/SDH networks. Today’s content and video providers are typically opting for more modern options such as IP/MPLS Until recently, IP/MPLS deployments have been limited to point-to-point connections, which are not efficient for video broadcast distribution to multiple destinations Since a single uncompressed stream may be up to 260 Mbps, sending a separate copy of each stream to each destination can quickly exhaust network bandwidth 8 | Copyright © 2009 Juniper Networks, Inc. | www.juniper.net Broadcast Content over Point-to-Multipoint LSP Using packet replication capability, point-to-multipoint LSPs avoid unnecessary replication at the ingress router point-to-multipoint support, MPLS networks are able to efficiently deliver both unicast and multicast content over a common network 9 | Copyright © 2009 Juniper Networks, Inc. | www.juniper.net Baseline Network Requirements for Broadband Content Distribution Performance Quality of Service Resiliency 10 | Copyright © 2009 Juniper Networks, Inc. | www.juniper.net