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Connectivity Unlimited™

Managed Ethernet Services. Connectivity Unlimited™. Agenda. Carrier Ethernet Market Overview MEF Carrier Ethernet Significance MPLS - Core Technologies OAM – Operation Administration and Maintenance. Agenda. Carrier Ethernet Market Overview MEF Carrier Ethernet Significance

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Connectivity Unlimited™

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  1. Managed Ethernet Services Connectivity Unlimited™

  2. Agenda • Carrier Ethernet Market Overview • MEF Carrier Ethernet Significance • MPLS - Core Technologies • OAM – Operation Administration and Maintenance

  3. Agenda • Carrier Ethernet Market Overview • MEF Carrier Ethernet Significance • MPLS - Core Technologies • OAM – Operation Administration and Maintenance

  4. Why Ethernet? • Less expensive and more reliable alternative to private line alternatives (e.g., ATM and Frame Relay (DS1/DS3)) • Deploy new applications rapidly with minimal capital investment • Leverage existing IT staff experience – (minimize training) • It offers a simple migration to higher performance and value • Ability to mix bandwidth by location and application • Supports bandwidth intensive applications, such as high speed data, VoIP and video (IP applications)

  5. There Are Shortcomings of Traditional Ethernet The MRV OptiSwitch series is an ENABLER and ACCELERATOR for the deployment of New Revenue GeneratingEthernet Services (EPL, EVPL, E-LAN, E-Tree)

  6. So, along comes Carrier Ethernet (CE)…. • CE is a ubiquitous standardized, carrier-class service and network defined by five attributes that distinguish it from familiar LAN based Ethernet • Carrier-grade Ethernet is required for the mass market to shift from FR/ATM/PL to Ethernet • MEF certification enables and accelerates full inter-operability (services and TM) • Much easier for service providers to manage and maintain • Legacy networks are frustratingly obsolete to the modern enterprise • Carrier Ethernet Access completes the connection • End-to-end Ethernet provides the most efficient, lowest cost access method for extending Ethernet Metro Networks • OAM and TM are the critical parts of a carrier-grade Ethernet offering • Without them, many users will stick with their current WAN technologies • Provides service providers with the OPEX savings to justify migration • Business Ethernet Services revenue growing to $31B by 2012: • Dedicated Internet Access (DIA) • Ethernet Private Lines (E-Line) • Ethernet LAN/VPLS (E-LAN) • Ethernet access to other services (e.g., Internet, IP/MPLS VPNs, etc.)

  7. Carrier Ethernet Provides Service Convergence • Carrier Ethernet provides a converged network solution that is simpler and more cost effective for both the service provider and the enterprise

  8. Worldwide Business Ethernet Services Business Ethernet Services – revenues mount steadily to nearly $31 billion by 2012 – a real shift towards next generation applications • Robust enterprise customer demand is projected for the next 4 to 5 years, • Double-digit annual growth across all geographic regional markets • Service Providers are committed to Ethernet as the standard for network service connectivity. • Ethernet equipment vendors are actively enabling this important transition through industry standards participation Business applications for Ethernet Services include Dedicated Internet Access (DIA), Ethernet Private Lines, Ethernet LAN / VPLS, and Ethernet access to other network services (e.g., IP/MPLS VPNs, Frame Relay, etc.).

  9. Enterprise Ethernet Spending Plans • Ethernet Spending Likely to increase faster than spending on other services

  10. Agenda • Carrier Ethernet Market Overview • MEF Carrier Ethernet Significance • MPLS - Core Technologies • OAM – Operation Administration and Maintenance

  11. The standards Committees

  12. Issues and Opportunities • The MEF’s Mission: • Accelerate the worldwide adoption of carrier-class Ethernet networks and services • This mission is in direct response to the opportunities made available by • The need and demand for a simple ubiquitous service • Requirement to scale network services to enable rapid deployment of applications critical to enterprises and service providers. • Availability of low cost, high bandwidth Ethernet, beyond the LAN • Convergence of business, residential and wireless services

  13. Global Expansion from Metro to Carrier Ethernet • The Beginning: Metro Ethernet • The MEF was formed in 2001 to develop ubiquitous business services for Enterprise users principally accessed over optical metropolitan networks to connect their Enterprise LANs • Expansion to Carrier Ethernet • The success of Metro Ethernet Services caught the imagination of the world as the concept expanded to include • Worldwide services traversing national and global networks • Access networks to provide availability to a much wider class of user over fiber, copper, cable, PON, and wireless • Economy of scale from the resulting converged business, residential and wireless networks sharing the same infrastructure and services • Scalability & rapid deployment of business applications • Adoption of the certification program • While retaining the cost model and simplicity of Ethernet

  14. Why is it Important for Carriers & Enterprises Alike? The Critical Attributes of Carrier Ethernet Standardized Services • Same services locally & globally Scalability • Available to millions & a multitude of applications Reliability • Rapid failure detection & recovery without impacting mission critical applications Quality of Service • Granular services that match the needs of voice, video, and data Service Management • Fast service provisioning and continuous monitoring of service quality Carrier Ethernet is a Service

  15. The 5 Attributes Carrier Ethernet (1) Attribute 1:Standardized Services • E-Line, E-LAN provide transparent, private line, virtual private line and multi-point to multi-point LAN services. • A ubiquitous service providing globally & locally via standardized equipment • Requires no changes to customer LAN equipment or networks and accommodates existing network connectivity such as, time-sensitive, TDM traffic and signaling • Ideally suited to converged voice, video & data networks • Wide choice and granularity of bandwidth and quality of service options

  16. The 5 Attributes Carrier Ethernet (2) Attribute 2:Scalability • The ability for millions to use a network service that is ideal for the widest variety of business, information, communications and entertainment applications with voice, video and data • Spans Access & Metro to National & Global Services over a wide variety of physical infrastructures implemented by a wide range of Service Providers • Scalability of bandwidth from 1Mbps to 10Gbps and beyond, in granular increments

  17. The 5 Attributes Carrier Ethernet (3) Attribute 3:Reliability • The ability for the network to detect & recover from incidents without impacting users • Meeting the most demanding quality and availability requirements • Rapid recovery time when problems do occur, as low as 50ms

  18. The 5 Attributes Carrier Ethernet (4) Attribute 4:Quality of Service • Wide choice and granularity of bandwidth and quality of service options • Service Level Agreements (SLAs) that deliver end-to-end performance matching the requirements for voice, video and data over converged business and residential networks • Provisioning via SLAs that provide end-to-end performance based on CIR, frame loss, delay and delay variation characteristics

  19. The 5 Attributes Carrier Ethernet (5) Attribute 5:Service Management • The ability to monitor, diagnose and centrally manage the network, using standards-based vendor independent implementations • Carrier-class OAM • Rapid service provisioning

  20. E-Line Service used to create Ethernet Private Lines Virtual Private Lines Ethernet Internet Access E-LAN Service used to create Multipoint L2 VPNs Transparent LAN Service Foundation for IPTV and Multicast networks etc. Carrier Ethernet: E-Line and E-LAN Services E-Line Service type Point-to-Point EVC UNI UNI CE CE Carrier Ethernet Network E-LAN Service type CE UNI Carrier Ethernet Network UNI CE Multipoint-to-Multipoint EVC MEF certified Carrier Ethernet products UNI: User Network Interface, CE: Customer Equipment, EVC: Ethernet Virtual Connection

  21. Carrier Ethernet: E-Tree Service May 2008 • Used for Applications requiring Point-to-Multipoint topology • Video on demand, internet access, triple play backhaul, mobile cell site backhaul, franchising applications • Provides traffic separation between ‘Leaf’ UNIs • Traffic from any “leaf” UNI can be sent/received to/from “Root” UNI(s) but never being forwarded to other “Leaf” UNIs UNI CE Leaf Root Leaf UNI UNI Leaf CE CE UNI Rooted Multipoint EVC CE

  22. Carrier Ethernet Terminology • UNI (User-to-Network Interface) • Physical interface/demarcation between service provider and subscriber • Service start/end point • Ethernet Virtual Connection (EVC) • An association of two or more UNIs • Three types of EVC • Point-to-Point • Multipoint-to-Multipoint • Rooted Multipoint (Point-to-Multipoint) • EVCs and Services In a Carrier Ethernet network, data is transported across Point-to-Point, Point-to-Multipoint and Multipoint-to-Multipoint EVCs according to the attributes and definitions of the E-Line and E-LAN services • NNI (Network-to-Network Interface) • Demarcation/peering point • Between service providers (E-NNI) • Between service provider internal networks (I-NNI) For full presentation of Ethernet Services visit www.MetroEthernetForum.org/presentations.htm

  23. Agenda • Carrier Ethernet Market Overview • MEF Carrier Ethernet Significance • MPLS - Core Technologies • OAM – Operation Administration and Maintenance

  24. Metro Technologies – MPLS VPN • VPN – Virtual Private Network • Virtual – separate virtual network • Private - each virtual network has private address scheme Private Network MPLS VPN Network Private Network Private Network VPN

  25. Challenges – L2 Core networks • In Layer 2 core networks QoS is not end-to-end, policing at the edge will determine the rate for the customer. No control how traffic is forward or police inside the L2 core network. EVC 200 100MB service 100MB service EVC 100, 200 EVC 100, 200 EVC 100, 200 100MB for EVC100 EVC 100, 200 L2 core Network EVC 100, 200 EVC 100 EVC 100 EVC 100, 200 EVC 100, 200 EVC 200

  26. The Solution - MPLS • Scalable solution • Resilient solution • TE – Traffic engineering at the core • Build on standard IP behaves like L2 core network EVC 200 LSP LSR LSR LSR MPLS core Network LER LER EVC 100 EVC 100 LSR LSR EVC 200

  27. LER LER LER LSR LSR LSR LSR Basic Model for MPLS Network IP/L2 IP/L2 MPLS MPLS IP/L2 LSR = Label Switched Router LER = Label Edge Router

  28. Traffic Engineering • Move traffic from IGP path to less congested path (Spread the network traffic across network). • Maximize Bandwidth Utilization • Ensure available spare link capacity for re-routing traffic on failure • Meet policy requirements imposed by the network operator C1 C3 C2 Layer 3 Routing Traffic Engineering

  29. MPLS Benefits • The performance characteristics of layer 2 networks • The connectivity and network services of layer 3 networks • Improves the price/performance of network • provides scalability • Provides traffic engineering • Supports the delivery of services with QoS guarantees

  30. VPLS • VPLS –Virtual Private LAN Services is the architecture to deliver Multipoint services over MPLS network. • VPLS in the grand scheme emulates Ethernet bridge. VPLS PE P PE CPE CPE PE CPE

  31. VPLS Operation • In VPLS each customer has VPLS instance associated. • Each PE maintains MAC table of each instance. • All protocols from classical MPLS apply to VPLS i.e. IP routing, LDP, RSVP-TE. • Each instance has PW and LSP associated. • MAC address explosion can be challenge, therefore VPLS is suitable for small install base. PW CPE CPE PW LSP Tunnel PW CPE CPE CPE CPE VPLS LSP Tunnel LSP Tunnel PW PW CPE CPE

  32. H-VPLS Operation • H-VPLS is suitable for large deployment • Full mesh for core only. • Edge device running MPLS LER to the VPLS PE-HUB • No replication of MAC’s PE-HUB PE-HUB CPE CPE MPLS MPLS instance CPE CPE VC CPE CPE MTU MTU VPLS PE-HUB PE-HUB

  33. Agenda • Carrier Ethernet Market Overview • MEF Carrier Ethernet Significance • MPLS - Core Technologies • OAM – Operation Administration and Maintenance

  34. MIP MIP MEP MIP MEP End-to-end OAM in Multi-operator Networks IEEE802.1ag CFM & ITU-T Y.1731 PM WAN LAN Service Provider ( level 4) Operator 2 ( level 2) Operator 1 ( level 2) MEP - Maintenance End Point MIP - Maintenance Intermediate Point - Service Instance - Maintenance Association MIP MIP MEP

  35. Connectivity Fault Management – 802.1ag / Y.1731 Fault Detection Continuity Check Fault Verification Loopback Fault Isolation Linktrace

  36. MEP MIP MEP MEP Connectivity Check Message (CCM) • CCM enables fault management, performance measurement and binding to service protection (LOS/LIN) • CCM configurable rate (default 1 frame/sec) • Counters for CCM frames (transmitted, received & errors) • CCM fault & alarm hierarchy Site 2 Site 1 Metro Network CCM messages (keep alive) • CCM messages are multicast for P2P and P2MP services • Doesn’t require response • Recorded for service discovery, connectivity & performance measurement

  37. Loopback Message (LBM) – Layer 2 Ping MEP MIP MEP MEP • Loopback is a Unicast message to verify connectivity or fault to remote MEP or MIP (request/reply) • LBM transmission enables bidirectional verification • LBM is per service – per VLAN loopback with MAC swap function • Configurations can be per number of LB messages • Interval between LB messages, loopback packet length, timeout and priority field Site 2 LBM Site 1 LBR Metro Network LB messages (Request/reply) • LBM messages are Unicast • Configuration defined for remote MEP or MIP (MAC or remote ID MEP)

  38. Link Trace Message (LTM) – Layer 2 Traceroute MEP MIP MIP MIP MEP MEP • Link TRace is a multicast message to isolate connectivity or fault to remote MEP or MIP (request/reply) LTM Site 2 Site 1 LTR Metro Network LT messages (Request/reply) • LTR messages are multicast • Configuration defined for remote service entities

  39. Performance Management (PM) - ITU-T Y.1731 MEP MIP MEP MEP • MEP use Unicast LB messages to measure - pro-active/periodically P2P service performance • Performance messages enable • Latency, loss measurement - Two-way • Jitter – Two-way and one-way • Separate PM tests can be operated, each with diffserv class+marking & packet lengths Site 2 LBM Site 1 LBR Metro Network Delay, Jitter & loss • Loopback and PM messages used for performance measurement • Configuration defined for remote MEP or MIP (MAC or remote ID MEP)

  40. Built-in Traffic Generator for SLA Measurement • Enables automated testing tool for SLA baseline at wires-speed from demarcation device based on RFC2544 methodology • Throughput – up to GigE rate & Jumbo frames • Latency/Jitter • Frame loss rate • Back-to-back frames Test pattern on real-time VoIP Service Test pattern on high-priority Data Service Each virtual service on tested interface can be tested independently by non-intrusive loopbacks Latency, Jitter and loss

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