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The 5 Attributes of Carrier Ethernet & Industry Specifications Moderator: Arie Goldberg – Omnitron Systems Panelists: Dr. Kumar N. Sivarajan - Tejas Networks Ralph Santitoro - Turin Networks Craig Easley - Actelis 1 Panel Members Arie Goldberg Dr. Kumar N. Sivarajan Chief Technologist & CEO Omnitron Systems [email protected] Chief Technology Officer Ralph Santitoro Craig Easley Chair, MEF Web Marketing Committee Director of Carrier Ethernet Solutions Turin Networks [email protected] Vice President of Marketing Actelis Networks [email protected] Tejas Networks [email protected] 2 Presentation Agenda • The 5 Attributes of Carrier Ethernet (CE) – Arie Goldberg (Omnitron) • Carrier Ethernet vs. Enterprise Ethernet, Concepts, Services – Dr. Kumar Sivarajan (Tejas) • Inter-Related Industry Specifications – Ralph Santitoro (Turin) • MEF Specifications Update – Craig Easley (Actelis) • Q&A 3 The 5 Attributes of Carrier Ethernet & Industry Specifications The Five Attributes Arie Goldberg 4 Basic Carrier Ethernet Services Point to Point Point-to-Point EVC E-LINE CE E-LAN CE UNI UNI CE UNI E-TREE Multipoint EVC UNI UNI CE Point to Multi-Point Rooted Multipoint EVC CE UNI UNI Coming Soon! 5 CE Multi-Point to Multi-Point CE The 5 Attributes of Carrier Ethernet Carrier Ethernet • Carrier Ethernet is a ubiquitous, standardized, carrier-class SERVICE defined by five attributes that distinguish Carrier Ethernet from familiar LAN based Ethernet • It brings the compelling business benefit of the Ethernet cost model to achieve significant savings • Standardized Services Carrier Ethernet Attributes • Scalability • Service Management • Reliability • Quality of Service 6 The 5 Attributes of Carrier Ethernet (1) Attribute 1: Standardized Services • Ubiquitous services provided locally & globally via providers. • E-Line, E-LAN, E-Tree: provide transparent, private line, virtual private line and multi-point to multi-point LAN services. • Using standardized equipment. • Accommodates existing customer LAN equipment. • Accommodates existing transport infrastructure technology including TDM. • Enables converged voice, video & data networks. 7 The 5 Attributes of Carrier Ethernet (2) Attribute 2: Scalability • Enables different levels and variety of business, information, communications and entertainment applications with voice, video and data. • Spans Access & Metro to National & Global Services. • Utilizes a variety of physical infrastructures implemented by different Service Provider types. • Support a wide choice and granularity of bandwidth and quality of service options. 8 The 5 Attributes of Carrier Ethernet (3) Attribute 3: Reliability • The ability for the network to detect & recover from incidents without impacting customers. • Meeting the most demanding quality and availability requirements. • Rapid recovery time when problems do occur; as low as 50ms. 9 The 5 Attributes of 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 committed information rate (CIR), frame loss, delay and delay variation characteristics. 10 The 5 Attributes of 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. 11 The 5 Attributes of Carrier Ethernet & Industry Specifications Carrier Ethernet vs. Enterprise Ethernet Concepts, Services Dr. Kumar N. Sivarajan 12 What is Carrier Ethernet? • • • • More than Ethernet LAN Based on a Set of Simple Concepts Delivering Valuable Services Evolving to Meet Needs of Stakeholders A Technology Whose Time is Now 13 Why Ethernet in the Metro? Why take Ethernet to the Metro? Enables true extension of Enterprise LAN across multiple locations, as well as effectively providing other multipoint services Utilize simplicity and ubiquity of Ethernet as a technology Enables bandwidth efficiency in the network due to statistical multiplexing Low price/bandwidth ratio makes Ethernet the technology of choice Ethernet Ethernet 10/100 Base -T 14 Attribute 1: Standardized Services Carrier Ethernet Enterprise Ethernet Network 2 Network 1 Network 3 Service provided over one network (Company LAN) Provide service across multiple geographies and multiple networks One customer – can customize network to requirements Provides service to multiple customers Needs to provide converged transport with optimal use of present investment 15 Attribute 2: Scalability Carrier Ethernet Enterprise Ethernet 100 Gbps 10 Gbps 1 Gbps 1 Gbps 100 Mbps 100 Mbps 10M 100 1000 10K Nodes Nodes Nodes Nodes 100 1000 Nodes Nodes Few hundreds or thousands of nodes Need to scale to millions of nodes Need to scale from 10 Mbps to 1 Gbps Need to scale from few Mbps data rate to 10 Gbps and beyond Limited number of services to be supported Network needs to support several services 16 Attribute 3: Reliability Enterprise Ethernet Carrier Ethernet $ $$ $ $ 50ms protection SLA losses Need to provide protection in case of link failure in less than 50 ms Equipment is all within a premise, more reliable with easy recovery Need to provide five 9s reliability of equipment No strict time limits needed on link protection, no SLAs associated with network availability Need to recover from faults as quickly as possible to provide uptime as specified in SLA 17 Attribute 4: Service Management Enterprise Ethernet Carrier Ethernet Service Down Service Down Vendor 1 Vendor 3 Vendor 2 Fault isolation is easy since equipment is all within a premise Need to quickly monitor and diagnose faults across multiple vendor equipment Bandwidth is more static in nature, no need for provisioning Ability to rapidly provision the bandwidth end-to-end 18 Attribute 5: Quality of Service Enterprise Ethernet Bandwidth is cheap, hence no contention in the network No variety in traffic profiles, identical treatment is acceptable Carrier Ethernet High-speed Mobile Mobile Voice High-speed Mobile Voice Enterprise Internet Services Enterprise Mobile Internet Services Metro Metro Network Network ofQoS absolutely required Leakage SLA-based traffic due service to congestion variety of SLAs to Ability to treat customer traffic in agreement with the SLAs 19 In summary Ethernet in LAN Geographic Reach Carrier Ethernet Metro National International Campus Building Wiring closet Service-oriented Highly resilient Carrier environmental Equipment Fiber Cat5 VG Cu T1/E1, T3/E3 SONET/SDH Wireless Transport Technologies Cat5 Wireless Availability Some tolerance for disruption No tolerance for disruption Driven by SLA End Customer Department heads Employee Corporate IT Consumer Fiber 20 The 5 Attributes of Carrier Ethernet & Industry Specifications Inter-Related Industry Specifications Ralph Santitoro 21 Carrier Ethernet - Encompasses Many Standards 1. A Service Delivery (Layer 2) technology supported over various Layer 0/1 transport network technologies – Ethernet over Fiber (Ethernet) • Provider Bridges (IEEE 802.1ad) • Provider Backbone Bridges (IEEE 802.1ah) – Provider Backbone Bridges-TE (PBT) via IEEE 802.1Qay – Ethernet over SONET/SDH using GFP encapsulation (ITU-T G.7040), VCAT (G.7041) for bonding and LCAS (G.7042) for Bandwidth Management – Ethernet over PDH (T1/T3, E1/E3) using one of the following approaches: • PPP/MLPPP/BCP (RFC1990 / RFC3518) for encapsulation, bonding and Bandwidth management • GFP for encapsulation, LCAS for BW mgmt., VCAT for bonding (G.8040) – Ethernet over λ (ITU-T G.709) – Ethernet over Copper (IEEE 802.3ah 2BaseTL, ITU-T G.991.2 G.SHDSL) 2. A Transport Network (Layer 1) technology to deliver all services over a common Ethernet network infrastructure – IEEE 802.3 Ethernet 22 Ethernet Service Management - for SLAs • Key Metrics 1. 2. 3. 4. 5. • Frame/Packet Delay Frame/Packet Delay Variation Frame/Packet Loss Ratio Service Availability Frame/Packet Goodput The Metro Ethernet Forum has defined metrics 1-4 – Frame-based measurements – MEF 10.1 defines the formulae for Frame Delay, Frame Delay Variation, Frame Loss Ratio and Service Availability • The ITU-T has defined metrics for items 1-3 – Packet-based measurements – ITU-T Y.1731 defines how to use IEEE 802.1ag to measure service PMs The combination of 802.1ag, Y.1731 and MEF 10.1 define the complete Ethernet Service PM solution 23 Ethernet Service Performance Metrics - Some statistically measured, some calculated • Frame Delay (FD) and Frame Delay Variation (FDV) – Statistically measured via transmission and reception of service OAM frames over measurement period • Frame Loss Ratio (FLR) – Calculated based on number of Green (in-profile) Ingress frames sent and Egress frames received over measurement period T • Goodput – Calculated based on total number of Ingress frames sent and Egress frames received over measurement period T • Service Availability – Calculated based on amount of time, FD, FDV and FLR meet or exceed their service level objectives over measurement period T, e.g., 15 minutes or 24 hours 24 Carrier Ethernet Network Reliability - Some Ethernet Service Protection/Restoration Choices • Path-based ITU-T G.8031 (linear) and G.8032 (ring) Ethernet protection switching for E-Line Services – IEEE 802.1ag messages heartbeats – Alarm Indication Signal (AIS) Messages for localized fault isolation • Protection/restoration options for E-LAN services to augment or replace RSTP – – – – Many proprietary implementations Multiple Instances of RSTP (MSTP) (IEEE) G-MPLS Path Protection (IETF) MPLS Fast Reroute for VPLS (IETF) Many choices and no single protection/restoration method is optimal for all services and topologies 25 Ethernet Service Management (OAM) • Service Connectivity Fault Management (CFM) – IEEE 802.1ag for EVC Connectivity Fault Management • Connectivity Check Messages (CCMs) for heartbeats • For diagnostic purposes usage – Connectivity Check Messages , Link Trace Messages, Loopback Messages • Apply CCMs between Management Endpoints (MEPs / UNIs) and Management Intermediate Points (MIPs / NNIs) • Link Fault Management (LFM) – SONET/SDH LFM for Ethernet over SONET/SDH NNIs • Facilities and Terminal (UNI) loopbacks – IEEE 802.3ah for LFM for Ethernet UNI / NNI connections • Fault Detection (Link Fault, Critical Events) and Remote Loopback Fault Management uses different techniques depending the type of transport network used 26 Ethernet Service Scalability • ITU-T Generic Framing Procedure (GFP) for Ethernet over SONET/SDH (EoS) – 4095 EVCs / S-VLANs (Services) per EoS NNI (GFP) tunnel • IETF MPLS Service ID – 1M service instances • IEEE 802.1ah Backbone Provider Bridges – 16M service instances • Triple Tag Stacking (QinQinQ) (proprietary) – 4095 EVCs / S-VLANs (Services) per Outer Q tag tunnel Different choices depending upon the type of transport network used 27 Carrier Ethernet Summary • Ethernet technologies and standards are evolving – to meet the requirements for the Carrier Ethernet Attributes • Collaboration among the various Standards Development Organizations is crucial to success 28 The 5 Attributes of Carrier Ethernet & Industry Specifications MEF Specifications Update Craig Easley 29 Technical Document Types • Technical Specification – Document detailing the agreed upon definitions, scope, methods and procedures for a component of Carrier Ethernet • Implementation Agreement – A document describing an agreement as to how options in existing technical specifications or other standards bodies work shall be implemented • Test Specification – A document describing how attributes of Carrier Ethernet technical specifications will be tested for compliance against those specifications – Also called Abstract Test Suite • Position Statement – An Outgoing Liaison with other standards organizations describing the MEF’ 30 Completed Specifications Number Topic Comments MEF 1 Service Model Phase 1 Connectivity attributes MEF 2 Protection Requirements Framework and terminology MEF 3 Circuit Emulation Service Definitions, Framework and Requirements Similar to circuit emulation over IP but over Ethernet instead MEF 4 Metro Ethernet Network Architecture Framework - Part 1: Generic Framework Terminology and abstract model MEF 5 Traffic Management Phase 1 Policing and performance MEF 6 Ethernet Services Definitions - Phase I E-Line, E-LAN, EPL, EVPL MEF 7 EMS-NMS Information Model Being updated by ITU SG 4 MEF 8 Emulation of PDH Circuits PDH circuit emulation MEF 9 Abstract Test Suite for Ethernet Services at the UNI Basis for first certification program 31 Completed Specifications Number Topic Comments MEF 10 Ethernet Services Attributes Phase 1 Replaces MEF 1 and MEF 5 MEF 10.1 Ethernet Services Attributes Phase 2 Replaces MEF 10 MEF 11 User Network Interface (UNI) Requirements and Type 1: Data Plane, Type 2: Mgt Framework Plane, Type 3: Ctl Plane MEF 12 Metro Ethernet Network Architecture Framework Part 2: Ethernet Services Layer Terminology and abstract model MEF 13 User Network Interface (UNI) Type 1 Implementation Agreement Sizing requirements MEF 14 Abstract Test Suite for Traffic Management Phase 1 Basis for second certification program MEF 15 Requirements for Management of Metro Ethernet Phase 1 Network Elements MEF 16 Ethernet Local Management Interface LMI for Ethernet (UNI Type II) MEF 17 Service OAM Framework and Requirements OAM Component of UNI Type II MEF 18 Abstract Test Suite for Circuit Emulation Basis for the third certification MEF 19 Abstract Test Suite for UNI Type II Basis for the fourth certification program 32 Document Relationships MEF 10 Service Attributes MEF 1 Connectivity Attributes MEF 10.1 Service Attributes MEF 5 Policing & Performance MEF 14 Policing & Performance Tests MEF 6 Service Definitions MEF 9 Connectivity Tests MEF 9 Certification Programs Phase 2 Service Definitions MEF 14 Certification Programs MEF 19 Certification Programs UNI Type I Certification Reference Incorporation 33 Document Relationships MEF 18 Abstract Test Suite for CES MEF 8 Circuit Emulation TS MEF 3 Circuit Emulation Framework Circuit Emulation Services Certification Reference Incorporation 34 Ethernet Standards Summary Standards Body IEEE MEF ITU TMF Ethernet Services - Architecture/Control • • • • • • • • • • 802.3 – MAC 802.3ar – Congestion Management 802.1D/Q – Bridges/VLAN 802.17 - RPR 802.1ad – Provider Bridges .1ah – Provider Backbone Bridges .1ak – Multiple Registration Protocol .1aj – Two Port MAC Relay .1AE/af – MAC / Key Security .1aq – Shortest Path Bridging Ethernet OAM • 802.3ah – EFM OAM • 802.1ag – CFM • 802.1AB - Discovery • 802.1ap – VLAN MIB Ethernet Interfaces • 802.3 – PHYs • 802.3as - Frame Expansion • MEF 10 – Service Attributes • MEF 3 – Circuit Emulation • MEF 6 – Service Definition • MEF 8 – PDH Emulation • MEF 9 – Test Suites • MEF 14 – Test Suites • Services Phase 2 • MEF 4 – Generic Architecture • MEF 2 – Protection Req & Framework • MEF 11 – UNI Req & Framework • MEF 12 - Layer Architecture • MEF 7– EMS-NMS Info Model • MEF 13 - UNI Type 1 • MEF 15– NE Management Req • MEF 16 – ELMI • OAM Req & Framework • E-NNI • OAM Protocol – Phase 1 • Performance Monitoring • G.8011 – Services Framewrk • G.8011.1 – EPL Service • G.8011.2 – EVPL Service • G.asm – Service Mgmt Arch • G.smc – Service Mgmt Chnl • G.8010 – Layer Architecture • G.8021 – Equipment model • G.8010v2 – Layer Architecture • G.8021v2 – Equipment model • Y.17ethmpls - ETH-MPLS Interwork • Y.1730 – Ethernet OAM Req • Y.1731 – OAM Mechanisms • G.8031 – Protection • Y.17ethqos – QoS • Y.ethperf - Performance - •TMF814 – EMS to NMS Model - 35 • G.8012 – UNI/NNI • G.8012v2 – UNI/NNI - Summary Carrier Ethernet is about solving real life problems – providing “Real Services” of Data, Video, Voice, P2P, P2MP. Services must be: – Standardized – local & global – Scalable – fit changing needs – Reliable - dependable – Manageable – efficient and effective – Provide Predictable / measurable QoS 36 Five Attributes - Q&A Arie Goldberg Dr. Kumar N. Sivarajan Chief Technologist & CEO Omnitron Systems [email protected] Chief Technology Officer Ralph Santitoro Craig Easley Chair, MEF Web Marketing Committee Director of Carrier Ethernet Solutions Turin Networks [email protected] Vice President of Marketing Actelis Networks [email protected] Tejas Networks [email protected] 37 Thank you More at www.metroethernetforum.org 38