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Beyond IPTV: Multi-play and its Network Requirements
Beyond IPTV: Multi-play and its Network Requirements
Beyond IPTV: Multi-play and its Network Requirements
Beyond IPTV: Multi-play and its Network Requirements
Beyond IPTV: Multi-play and its Network Requirements
Beyond IPTV: Multi-play and its Network Requirements
Beyond IPTV: Multi-play and its Network Requirements
Beyond IPTV: Multi-play and its Network Requirements
Beyond IPTV: Multi-play and its Network Requirements
Beyond IPTV: Multi-play and its Network Requirements
Beyond IPTV: Multi-play and its Network Requirements
Beyond IPTV: Multi-play and its Network Requirements
Beyond IPTV: Multi-play and its Network Requirements
Beyond IPTV: Multi-play and its Network Requirements
Beyond IPTV: Multi-play and its Network Requirements
Beyond IPTV: Multi-play and its Network Requirements
Beyond IPTV: Multi-play and its Network Requirements
Beyond IPTV: Multi-play and its Network Requirements
Beyond IPTV: Multi-play and its Network Requirements
Beyond IPTV: Multi-play and its Network Requirements
Beyond IPTV: Multi-play and its Network Requirements
Beyond IPTV: Multi-play and its Network Requirements
Beyond IPTV: Multi-play and its Network Requirements
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Beyond IPTV: Multi-play and its Network Requirements

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  • 1. Beyond IPTV: Multi-play and its Network Requirements A new architecture for Triple Play over Broadband Ethernet networks Ayman Hamza ahamza@juniper.net System Engineer, SP Middle East Copyright © 2003 Juniper Networks, Inc. Proprietary and Confidential www.juniper.net 1
  • 2. Agenda  Multi-Play Broadband Architecture Concept  Multi-Play Broadband Requirements  Summary Copyright © 2005 Juniper Networks, Inc. Proprietary and Confidential 2 www.juniper.net
  • 3. The Evolution of Broadband Services…… 1980’s-90’s: 2000-’04: 2005-200x A new world The always-on concept The emergence of Home called the Internet w/ broadband Networks and Triple Play Services STB Phone Line 28-56kbps ADSL 64-384kbp RG s xDSL 20+Mbps The Start of the The Emergence of ADSL and Internet for masses using The Emergence of the new DSL, DOCSIS, DOCSIS technology Dial up: And xPON technologies: Higher bandwidth than dial-up: Phone line is shared Higher bandwidth than ADSL: typically 20+ ADSL typically 64k to 1.5Mbps between the PC and the Mbps per home phone – big rush to sell 2nd phone lines “Always on” concept i.e. no busy  First signs of home networks with signal Digitalization of the home: Emergence of the ISP Digital Camera, Camcorder, Playstation, concept with AOL,…  No need for a unique phone line, DVD, iPOD Same physical link into the home  New concept: For multiple services Content available to everybody “New economy concept” First look at Convergence!! Copyright © 2005 Juniper Networks, Inc. Proprietary and Confidential 3 www.juniper.net
  • 4. Proposed BSR architecture (TR-101, TR59): Subscriber-centric approach based on Single Edge / C-VLAN model Per subscriber AAA 1x Stacked VLAN 1 x C-VLAN BSR VC 1 x C-VLAN RG MC-VLAN 1x VC Internet RG Subscriber VoD VoIP All subscriber and service provisioning in BSR TV C-VLAN per subscriber for all unicast services Shared MC-VLAN for IPTV broadcast services Per-subscriber policy and QoS centralized in BSR SDP Access and aggregation focus is on connectivity/transport Copyright © 2005 Juniper Networks, Inc. Proprietary and Confidential 4 www.juniper.net
  • 5. Alternative architecture (TR-101, TR59): Service-centric approach based on Multi Edge / Service-VLAN model Per subscriber AAA VC -VC - Internet Service VLAN - Internet BSR VC - Voice VOD VC - Service VLAN - Voice BCTV RG Serv VC -VC - Internet ice V LAN VC - Voice – VO MC - D VOD VC – VLAN RG BCTV SDP Video PE ? Subscriber and service provisioning in access/aggregation Shared VLAN per service for all unicast services Shared MC-VLAN for IPTV broadcast services Per-subscriber policy and QoS distributed over access/aggregation/BRAS Access and aggregation is now ‘service-aware’ Copyright © 2005 Juniper Networks, Inc. Proprietary and Confidential 5 www.juniper.net
  • 6. Single Edge vs. Multi Edge model (TR-101, TR59) Multi-Edge BSR BSR Multi- VC Service VLANs BSR Provisioning : push model via complex integration of NMS systems at subscription time on a per subscriber basis BSR Single-VC Customer VLANs Ethernet access Provisioning : batch pre-provisioning at DSLAM commisioning time and pull model via Radius at subscriber connection time Copyright © 2005 Juniper Networks, Inc. Proprietary and Confidential 6 www.juniper.net
  • 7. Options for the aggregation network  Layer 1 backhaul (*) • Direct connect between DSLAM and BSR  Carrier Ethernet Switches • Bridging / MAC-based forwarding • VLAN switching (without MAC learning)  MPLS Switches • Pseudo wire Services • Point-to-Multipoint LSPs • Virtual Private LAN Services (*) Only applies to single edge BSR architecture Copyright © 2005 Juniper Networks, Inc. Proprietary and Confidential 7 www.juniper.net
  • 8. Agenda Multi-Play Broadband " Architecture Concept Multi-Play Broadband " Requirements Summary " Copyright © 2005 Juniper Networks, Inc. Proprietary and Confidential 8 www.juniper.net
  • 9. BSR Architectural Component .. AAA Stacked VLAN Per subscriber => 1 x VC 1 x C-VLAN BSR MC- VLAN RG Operational simplicity Provisioning & Operations Toolkit Quality of experience QoS and Policy Toolkit Network & Service security Security Toolkit Service availability Redundancy Toolkit Network efficiency Multicast Toolkit Copyright © 2005 Juniper Networks, Inc. Proprietary and Confidential 9 www.juniper.net
  • 10. Provisioning & Operations Toolkit Network provisioning between CPE and BSR • Based on mass pre-provisioning using TR-68, TR-69 standard EMS tools • Is about connectivity, not about services • No need for expensive integrated e2e NMS Service provisioning on the BSR Operations • Auto-sensing VLAN / DHCP / PPPoE • Single SDP eases operational • Single SDP for ‘subscriber-centric’ procedures for troubleshooting service provisioning • Troubleshooting starts from • Using standard broadband provisioning perspective of subscriber, not service tools (Radius, Policy Engine) • Ethernet OAM easy in C-VLAN model Stacked VLAN AAA BSR Per subscriber => 1 x VC 1 x C-VLAN MC- VLAN RG Copyright © 2005 Juniper Networks, Inc. Proprietary and Confidential 10 www.juniper.net
  • 11. End-to-end provisioning Service Non service-aware provisioning Service Provisioning Connectivity only Provisioning AAA & Policy Engine Stacked VLAN 1x 1 x C-VLAN BSR VC MC-VLAN RG Configure L2 backhaul Auto-configuration of VLANs Template configuring for S-VLANs Auto-detection of sessions ATM-VC to C-VLAN between DSLAM and BSR (PPPoE or DHCP) cross-connections (can be done when DSLAM Auto-provisioning of sessions (can be done when DSLAM gets commissioned) (Radius, Policy Engine) gets commissioned) … or use L1 backhaul Copyright © 2005 Juniper Networks, Inc. Proprietary and Confidential 11 www.juniper.net
  • 12. L2C to automate provisioning and operations L2C OAM use case • Lightweight protocol between access node and BSR • All major DSLAM vendors working on implementation Hybrid OAM for Ethernet / ATM migration Video ASP BSR sends L2C OAM command to DSLAM DSLAM responds with OAM status for line VoIP ASP Internet Port BSR IP Backbone C-VLANs Internet IPTV Port Copyright © 2005 Juniper Networks, Inc. Proprietary and Confidential 12 www.juniper.net
  • 13. QoS and Policy Toolkit BSR • Per-subscriber per service QoS DSLAM • Per-subscriber advanced packet processing • DSL line should not experience congestion • Multi-level hierarchical scheduling thanks to BSR per-subscriber QoS • Shared shaping in oversubscribed networks (no need for multi-VC) • Shape C-VLAN to DSL line speed (L2C RAM) • 802.1p / IP TOS-DSCP (re)marking • Marking 802.1p / IP TOS • Dynamic QoS adjustment based on IGMP C-VLAN 1 Aggregation • L1 : No QoS PORT S-VLAN 1 • L2 : Prioritization based on 802.1p CPE • Upstream QoS C-VLAN 2 • IP TOS marking 1 VC Stacked VLAN Per subscriber => 1 x VC 1 x C-VLAN BSR MC- VLAN RG BSR Per-sub QoS Per traffic class QoS Per-sub QoS Copyright © 2005 Juniper Networks, Inc. Proprietary and Confidential 13 www.juniper.net
  • 14. Multi-Play Challenges How much video  Diverse Delivery Requirements bandwidth to • VOIP needs minimal bandwidth, allocate per subscriber??? but requires priority handling to minimize delay and jitter What is the video channel concurrency • IP Video requires high ratio??? What’s the bandwidth with low loss expected IPTV take rate, and how  Carve outs are inefficient does it change over  Forecasting is inaccurate time??? Service Providers are challenged to accurately forecast new triple play service acceptance, making design decisions difficult Copyright © 2005 Juniper Networks, Inc. Proprietary and Confidential 14 www.juniper.net
  • 15. Solution: Dynamic Bandwidth Allocation Bandwidth, Where and When it’s Needed Upon IPTV activation – Broadband Services Router adjusts BW to Before IPTV is turned ensure IPTV QoE, Video Head-end on Voice / Data fully – bandwidth allocated Office allocated to Data/Voice remaining bandwidth Video Video/Hub Hub VOIP Serving Office IP Video Office Data Policy Manager Internet Port Customer VLAN shaped to 10Mbps service Subscriber Benefits IPTV RG • Full access to all available bandwidth • QoS for all services VoIP Provider Benefits: • Eliminates need to statically partition bandwidth per service • Minimizes planning and provisioning associated with rollout of IPTV Copyright © 2005 Juniper Networks, Inc. Proprietary and Confidential 15 www.juniper.net
  • 16. L2C to automate provisioning and operations L2C Rate Adaptive Mode (RAM) use case • How to copy the DSL sync rate to the C-VLAN shaping rate ? •DSLAM reports DSL sync rate (and other DSL line info) to the BSR via L2C Video ASP •BSR then provides this info to Radius which can then return appropriate qos-profile •Alternatively BSR could do local qos adjustment without going to Radius VoIP ASP Internet Port IP Backbone C-VLANs Internet IPTV Port Copyright © 2005 Juniper Networks, Inc. Proprietary and Confidential 16 www.juniper.net
  • 17. Security Toolkit C-VLAN backhaul to BSR (using CVLAN switching or MPLS PWE) addresses: BSR security at single • No MAC learning required enforcement point (SDP) • Broadcast domain restricted per user • Simplicity • No user-to-user communication • No need for proprietary • MAC spoofing (MAC table corruption) security mechanisms • IP spoofing • No out-of-sync issues • ARP tampering • Central manageability • Theft of service • Lawful interception (Radius • PPPoE / DHCP DOS attacks controlled) Stacked VLAN AAA Per subscriber => 1 x VC 1 x C-VLAN BSR MC- VLAN RG Copyright © 2005 Juniper Networks, Inc. Proprietary and Confidential 17 www.juniper.net
  • 18. Redundancy Toolkit Increasing availability in the platform, eliminating ANY single point of failure : • Stateful Switch Over Increasing availability in the network • Switch Fabric redundancy • Protocol Graceful restart • Line module redundancy • MPLS FRR • Port redundancy • VRRP • In Service Software Upgrade Stacked VLAN AAA Per subscriber => 1 x VC 1 x C-VLAN BSR MC- VLAN RG Copyright © 2005 Juniper Networks, Inc. Proprietary and Confidential 18 www.juniper.net
  • 19. Multicast Toolkit Best-in-class multicast routing protocols • IGMPv2, IGMPv3 Scaling and Availability • PIMv2 SM, DM, SM-DM • DVMRP, M-BGP • IGMP scaling • SSM mapping • MC redundancy solutions in access • MC optimization in software layer based on PIM-SM • MC join state dynamically adjusts C-VLAN shaping rate Multicast Control & Tracking • Per-subscriber IGMP statistics • Control MC bandwidth utilization • Prevent subscriber-originated MC traffic Stacked VLAN AAA Per subscriber => 1 x VC 1 x C-VLAN MC- VLAN RG BSR Copyright © 2005 Juniper Networks, Inc. Proprietary and Confidential 19 www.juniper.net
  • 20. Layer 2 backhaul Multicast optimization in access network  Optimization 1 : IP edge (BSR) should not send unnecessary channels into the ethernet aggregation Desirable network • BSR receives IGMP joins from subscribers across the entire metro aggregration area that is managed by that BSR  Optimization 2 : further optimize/filter channels on a per CO/DSLAM basis Optional • IGMP snooping in aggregation switches  Optimization 3 : only replicate requested channels to end Required user • DSLAM does IGMP snooping (or proxy) Copyright © 2005 Juniper Networks, Inc. Proprietary and Confidential 20 www.juniper.net
  • 21. Agenda Multi-Play Broadband " Architecture Concept Multi-Play Broadband " Requirements Summary " Copyright © 2005 Juniper Networks, Inc. Proprietary and Confidential 21 www.juniper.net
  • 22. Summary of BSR architecture for IPTV  Addresses the key requirements to facilitate rapid broadband service deployments over ethernet based access networks • Subscriber & service provisioning + Operations • Security • QoS and Policy • Redundancy & Availability • Multicast Optimized  Service-independent infrastructure allowing to move beyond the traditional triple play service offering  Access-independent infrastructure allowing to move beyond ADSL (to VDSL, PON, Wimax, etc.)  A A TCO-optimized solution (taking both CAPEX and OPEX into account) Copyright © 2005 Juniper Networks, Inc. Proprietary and Confidential 22 www.juniper.net
  • 23. Thank You

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