Solving the Access Conundrum for the All-IP Network:

Transcription

1 Solving the Access Conundrum for the All-IP Network: Business Service Delivery Across Diverse Infrastructures London, June 27 th, 2006 Presented by: Dr. Yuri Gittik Chief Strategy Officer

2 Access: Network Step-Child? Network planners should be fully cognizant of the major elements needed to ensure the access network requirements for effective business service delivery Services to business customers Wholesale services Cellular backhaul services GTB June06 Slide 2

3 The Access Challenge Pieces of the puzzle that need to be examined End-to-end service control and quality assurance Access over diverse infrastructures Maintenance of cash-generating legacy services GTB June06 Slide 3

4 Outline The Access Challenges Multiservice Access with ngdslam Ethernet in the Access Cellular backhauling Pseudo-wires in the Access and maintenance of cash-generating legacy services GTB June06 Slide 4

5 Infrastructure and Services Services Infrastructure Voice, LL, FR, ATM PSTN, PDH/SDH FR/ATM Voice, LL, FR, ATM, Internet, TLS, IP VPN, Video, IP TV, Hosting, Home Monitoring, DWDM, SDH, ATM, DSLAM, IP/MPLS, Ethernet, More infrastructure options Focus moving from backbone to access networks GTB June06 Slide 5

6 All-IP Networks: The Direction Network consolidation IP/MPLS core for voice and data services VoIP and soft-switches for voice services Internet access and IP VPN services Pseudo-wire solutions for Ethernet and legacy Layer 1/2 services New IP-based services: IPTV, N-play Fixed-mobile convergence Access-agnostic services for wireline and mobile customers It s all about money: Economy- not technology! Customer-centric approach Reduced opex with high economy of scale Flexibility with new services GTB June06 Slide 6

7 Evolution of Access Solutions Network Core Legacy Networks SDH, ATM Access/Backhaul Services/CPE Legacy Services Existing Equipment 2G BTS 3G NodeB New Packet-Switched Networks GbE, MPLS, IP New Services and Equipment IP RAN 4G NodeB Delivery of new IP/Ethernet services Maintenance of cash-generating legacy services GTB June06 Slide 7

8 Focus on Multiservice Access CLE Access Core CLE Access Data Core Converged All-IP Networks PSTN NTE NTE Access Access Access Core Core PSTN Separate Service Delivery CLE Access Core Core PSTN Integrated Access for Multiple Core Networks Integrated Access for Converged Transport Infrastructure Network Integration Level GTB June06 Slide 8

9 Outline The Access Challenges Multiservice Access with ngdslam Ethernet in the Access Cellular backhauling Pseudo-wires in the Access and maintenance of cash-generating legacy services GTB June06 Slide 9

10 ngdslam/msan: Typical Deployment Scenario Initial Stage: DSLAM platform with strong focus on residential services (and optional PSTN migration) Use standard commodity IAD and CPE Low importance of fiber access Basic services (voice, Internet access) Next Stage: Broadening the focus More focus on business customers Access over DSL and fiber Maintaining traditional services (leased lines, ATM) Dedicated smart NTU and multiservice CLE for new and traditional services Cellular backhaul applications And now adding IPTV services GTB June06 Slide 10

11 Broadening the Focus with NTU/CLE Customer Premises NTU/CLE Single/multiple copper Fiber CO/POP Customer Premises PBX CLE Single/multiple copper Fiber ngdslam Ethernet Metro IP/MPLS Customer Premises NTU/CLE Fiber Adding a range of smart NTU/CLE products to the MSAN platform Access over xdsl and fiber links DSL bonding for higher rates and longer reach More focus on direct (fiber) access to Metro Ethernet GTB June06 Slide 11

12 Leverage the DSLAM Backhaul Networks Deployment of Ethernet network for DSLAM backhauling Targeting residential apps, first of all IPTV Ethernet metro for business customers Network evolution Two separate networks? Single network? GTB June06 Slide 12

13 Outline The Access Challenges Multiservice Access with ngdslam Ethernet in the Access Cellular Backhauling Pseudo-wires in the Access and maintenance of cash-generating legacy services GTB June06 Slide 13

14 Ethernet in the Access Common user interface for all new IP-based services Internet access, Transparent LAN Services, L2VPN, access to IPVPN, video, multimedia content and others services over any infrastructure Common aggregation/metro infrastructure Suitable to any core network - IP/MPLS as well as SDH and ATM Multiservice support New Layer 2 services are back after the IP hype Business Layer 3 services are not particularly profitable and attractive Strong interest in new Layer 2 Ethernet services GTB June06 Slide 14

15 Ethernet Access: Carrier Requirements Special focus on Ethernet business services "Convergence" of requirements for business and residential services QoS/SLA assurance and end-to-end service control Intelligent Ethernet service demarcation Seamless transport over any available media/links xdsl, fiber/pon, PDH/SDH, wireless Multiple service offering First of all, TDM support GTB June06 Slide 15

16 Ethernet Access Over Diverse Networks Access & Aggregation Metro / Core Networks Customer Premises NTU ETX Fiber Access Ethernet Switch Fast/Gigabit Ethernet GbE Customer Premises IAD LA DSL Access Single or Multiple xdsl DSLAM GbE PSN Ethernet, IP/MPLS Customer Premises NTU RICi/FCD STM-1 PDH/SDH Access N x E1 SDH TDM-Eth GW Egate GbE Different access scenarios with same access-agnostic service attributes Fully interoperable solutions GTB June06 Slide 16

17 Ethernet Network Termination Unit Customer Premises NTU PSN Ethernet, IP/MPLS Customer Premises NTU End-to-end service control and monitoring Carrier owned, customer located equipment Provides a clear demarcation between the customer s and the provider s networks Clear service demarcation control at the customer premises End-to-end SLA monitoring and diagnostics End-to-end traffic management Focus on Ethernet services rather just Ethernet connectivity GTB June06 Slide 17

18 Intelligent Ethernet Demarcation: Minimizing Operational Costs Extensive monitoring and diagnostics capabilities Ethernet OAM and loopbacks Cable tester QoS starting at customer premises Per service traffic classification and prioritization Priority marking for port-based service Traffic policing Secure remote control and management Intelligent demarcation is essential for minimizing operational costs GTB June06 Slide 18

19 Carrier-Class Ethernet: Still Evolving Adding new features to make Ethernet a carrier-class technology Metro Ethernet Forum: Five attributes of Carrier Ethernet Scalability, protection, QoS, TDM support and service management Some features should be removed/disabled? Provider Backbone Trunking (PBT): forwarding based on global addressing learning, flooding and STP disabled Converged Packet Access Architecture: VLAN cross-connect, also without Ethernet learning and flooding GTB June06 Slide 19

20 Outline The Access Challenges Multiservice Access with ngdslam Ethernet in the Access Cellular Backhauling Pseudo-wires in the Access and maintenance of cash-generating legacy services GTB June06 Slide 20

21 The Backhaul Challenge Backhaul Transport Network Mobile Core Network 3G Node B 2G BTS BSC RNC Base Stations Development of cellular networks 2G 2.5G- 3G 3.5G - migration Rapid traffic extension Cellular networks co-location, with additional WiFi and WiMAX nodes Backhaul costs are about 40-60% of the cellular operator's OpEx GTB June06 Slide 21

22 Backhauling Solutions 2G BTS 2G BSC 3G Node B TDM ATM IMA Ethernet Access Aggregator Backhaul Network 3G RNC Migration to PSN backhaul/transport networks Dedicated solutions for Ethernet metro and IP/MPLS networks Increased importance of on timing/synchronization issues Focus on economics Requirements for cost-effective backhaul solutions Prevent investment in backhaul/transport Reduce costs of leased facilities GTB June06 Slide 22

23 Any Access over Any Infrastructure RAN Interface 2G/2.5G TDM GSM/GPRS, TDMA, CDMA Backhaul Infrastructure PDH SONET 3G ATM UMTS Rel. 99 ATM 3G/4G Ethernet/IP UMTS rev. 5&6, CDMA 2000 Ethernet/ IP/MPLS GTB June06 Slide 23

24 Outline The Access Challenges Multiservice Access with ngdslam Ethernet in the Access Cellular Backhauling Pseudo-wires in the Access and maintenance of cash-generating legacy services GTB June06 Slide 24

25 "Classic" Edge-to-Edge Pseudo-wires Emulation of native Layer 1/Layer 2 services, such as TDM, Frame Relay, ATM or Ethernet, over a packet-switched core network (IP/MPLS) Enables transport of a native service over IP/MPLS tunnels Emulation is performed by provider edge devices (PE) The individual service emulations in this approach are termed pseudowires PW Encapsulation Function PW Encapsulation Function Customer Premises CPE Attachment Circuit Native Service PE IP/MPLS PW PE Attachment Circuit Native Service Customer Premises CPE Pseudo-wire GTB June06 Slide 25

26 Pseudowires in the Access Pseudowires and the Future of Transport and Access Networks Heavy Reading Report, January 2005 The use of pseudowires is well established in IP/MPLS core networks today and is now extending into the access network. IXCs and wireless operators are now looking to deploy pseudowire solutions in access networks as a way to support multiple service types over a single connection, reducing the access charges those carriers pay to local incumbents. GTB June06 Slide 26

27 MCI: Converged Packet Access (CPA) Focus on Ethernet and MPLS/pseudowire infrastructure for metropolitan and local access networks Stage 1. Ethernet access Stage 2. Pseudo-wires in the access Support of Layer 1 and 2 services (TDM, ATM, Ethernet) Using MPLS control plane for service provisioning Defines several types of access nodes for various locations HDMPXC High Density Multi-Protocol Digital Cross-Connect BEAS Building Ethernet Aggregation System Pseudo-wire Termination Device GTB June06 Slide 27

28 Pseudo-wire in the Access Customer-located PW device encapsulates native service traffic PSN access infrastructure carries the encapsulated traffic PE performs pseudo-wire switching (stitching) Link Pseudo-wire Manual configuration Customer Premises CPE Native Service PW Device Access non-psn Network S-PE IP/MPLS Core PW PE PW Encapsulation Function PW over Access Link PW Stitching Function Access Pseudo-wire Manual configuration or automatic provisioning Customer Premises CPE Native Service PW Device Access PSN Network S-PE IP/MPLS Core PW PE PW Encapsulation Function Access PW PW Stitching Function GTB June06 Slide 28

29 Implementing the Alternative Emulation Access Solutions IP/MPLS pseudo-wires over various access infrastructures Regular MPLS PW with both tunnel (LSP) and inner (PW) labels "Dry Martini" single MPLS label (inner PW only) option PW over IP using MPLS-in-IP encapsulation (RFC4023), Emulated services over Ethernet access infrastructure The first step is already done - MEF 8: TDM over Ethernet Emulated services with IP DSLAM Various combinations of emulation over Ethernet and MPLS PW solutions based on PW-enhanced IAD and/or DSLAM functionality GTB June06 Slide 29

30 MPLS-capable Access Advantages Intelligent demarcation based on homogeneous MPLS infrastructure Provisioning with MPLS control plane End-to-end traffic engineering capabilities and service quality assurance MPLS-based protection in the access Reduced CapEx with inexpensive Ethernet tributary PE interfaces Suitable for any access infrastructure (legacy, Metro Ethernet) GTB June06 Slide 30

31 Maintaining Legacy Services Over ngdslam/msan POTS/ISDN Leased Lines X.25, FR, ATM CPE Copper, E1/T1 Access Node Legacy Networks Access Node CPE POTS/ISDN Leased Lines X.25, FR, ATM CPE IAD/CLE DSL IP DSLAM Ethernet Backhaul IP/MPLS Core IP DSLAM IAD/CLE CPE GTB June06 Slide 31

32 "Legacy" Service Emulation: Implementation Options DSLAM-to-DSLAM Emulation Edge-to-Edge Emulation CPE IAD Ethernet Backhaul IP/MPLS Core IAD CPE IP DSLAM Legacy Services' Gateway GbE n x T1, T3 OC-3 IP DSLAM Legacy Networks IAD-to-Network Emulation PSN, SDH, FR/ATM, X.25 IAD-to-IAD Emulation Emulation options IAD-to-IAD IAD-to-Network DSLAM-to-DSLAM Edge-to-Edge (PE-to-PE) GTB June06 Slide 32

33 Broadening the Pseudo-wire Approach Network Segment Access Core/Metro IP/MPLS Classic Pseudo-wires Infrastructure Ethernet Extended Pseudo-wire/Emulation DSLAM GTB June06 Slide 33

34 Summary Increasing importance of intelligent multiservice access over diverse media More technological alternatives are under way driven by economics GTB June06 Slide 34

35 Thank you for your attention Yuri Gittik