Best Practices for Video Transit on an MPLS Backbone

Best Practices for Video Transit on an MPLS Backbone Debbie Montano dmontano@juniper.net 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 dmontano@juniper.net 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 dmontano@juniper.net 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