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MEF Technical Activities

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Presentation on theme: "MEF Technical Activities"— Presentation transcript:

1 MEF Technical Activities
Paul Bottorff, Co-Chair MEF Technical Committee

2 What is the MEF The Metro Ethernet Forum is a non-profit organization dedicated to accelerating the adoption of optical Ethernet as the technology of choice in metro networks worldwide. The Forum is comprised of leading service providers, major incumbent local exchange carriers, top network equipment vendors and other prominent networking companies that share an interest in metro Ethernet. It has 60 members as of February, 2002.

3 MEF Key Objectives Build consensus and unite service providers, equipment vendors, end customers on optical Ethernet Facilitate implementation of optical Ethernet standards to allow delivery of Ethernet services and make Ethernet-based metro transport networks carrier-class Enhance worldwide awareness of the benefits of optical Ethernet services and Ethernet-based metro transport networks Enable Ethernet applications and services, building on the physical transport specified by e.g. 10GEA

4 MEF Structure

5 MEF: Diverse Leadership
The MEF Board of Directors is comprised of representatives from: BellSouth SBC France Telecom Rockefeller Group Telecommunications Services Agilent Technologies Procket Networks Atrica Nortel Networks Alcatel For more information about the MEF leadership please visit

6 Marketing Committee Structure
Messaging Collateral Sub-committee Events Sub-committee Economic Analysis Sub-committee Marketing committee is divided into three areas

7 Technical Committee Structure
All Members Areas Architecture Sub-committee Services Sub-committee Protocol & Transport Sub-committee Management Sub-committee Test Methods Sub-committee Technical committee is divided into five specialization areas

8 Approach to Technical Standards
Use existing Standards and only fill the technical gaps for Metro Ethernet IEEE 802 OIF ITU IETF MPLS Forum MEF Etc. Etc. 10 GE Alliance Etc. Etc.

9 Document Types Implementation Agreements Test Procedures
Building consensus on existing standards Test Procedures Promoting/Performing Interoperability testing Position Statements Proposing work for existing standards bodies Technical Specifications Developing new standards within MEF

10 TC Work Is Divided By Specialization Area
Technical Committee All Members Areas Architecture Sub-committee Services Sub-committee Protocol & Transport Sub-committee Management Sub-committee Test Methods Sub-committee

11 Architecture Metro Ethernet Network (MEN) Reference Model
User Network Interface (UNI) Network to Network Interfaces (NNIs) MEN Framework defines the modeling conventions for the functional elements which compose a MEN Provides common terminology for all MEF technical documents The demark for customer or subscriber attachment Ethernet Interworking NNI (EI-NNI) Interface between autonomous systems

12 Services Ethernet Services Model Ethernet Definitions
Ethernet Line Services (ELINE) Ethernet LAN Services (ELAN) Circuit Emulation Service (CES) Bandwidth Profiles Parameters Committed Information Rate (CIR) Peak Information Rate (PIR)

13 Transport and Protocol
Protection Protection Framework describes a model and framework to deliver network protection schemes EMF Ethernet Multiplexor provides a subset of the functions under discussion at IEEE Provider Bridges EoS Agreements for transport of Ethernet over Sonet

14 Management Element Management System EMS/NMS Information Model
defines the requirements for the central systems which manage the network elements of a MEN EMS/NMS Information Model defines a vendor independent data model for information exchanged between the service provider’s NMS and the MEN EMS OAM Management defines end-to-end OAM for the service assurance

15 TC Rules and Procedures Protection Requirements d3
MEF Technical Committee Dash Board MEF Technical Committee Conformance & Performance Test Area Process Ad-Hoc TC Rules and Procedures Management Area Architecture Area Protocol & Transport Area Services Area MEN Architecture QOS QOS Framework d2 OAM&P MEN Architecture FW Part 1 d1 MEN Architecture FW Part 2 MEN Architecture FW part 3 MEN Architecture FW part 4 MEN Architecture FW part 5 Ethernet Services Model d4 Ethernet Services Protection Ethernet Services OAM d4 Protection Requirements d3 Ethernet Services Definitions d2 Protection Framework d3 TM EMS Mgmt UNI UNI Requirements d2 MPLS Protection IA d1 Traffic Performance Parameters d3 EMS Requirements d1 EoS UNI Framework d3 EoS IA d1 CES UNI PVC IA d1 EMS-NMS If NI-NNI CES Requirements d2 EI-NNI Information Model d3 EMS-NMS MPLS NI-NNI D1 EI-NNI TS d1 Legend EMF Gray Color = Not Approved Project Orange Color = Approved Project Blue Color = Draft Status Green Color = Approved Standard Red Color = Sent to Ballot EMF TS d1

16 16 Approved Drafts

17 Basic Metro Ethernet Model
Ethernet Service provided by Metro Ethernet Network (MEN) Customer Equipment (CE) attaches to MEN at User-Network Interface (UNI) using 10, 100, 1000 Mbps Ethernet interface.

18 MEN Layered Network Model
Ethernet Services layer (ETH) uses services from its Transport Layer(s) provides services to its Application Services Layer(s) Application Services Layer (s) (VoIP, IP, MPLS, PDH, ...) Ethernet Services Layer (Ethernet) Transport Layer (s) Domain (802.3 PHY, SDH/SONET, MPLS, OTN, ...)

19 MEF External Reference Points
Public Service Networks Internet, FR, etc. UNI Service Interworking SI-NNI Metro Ethernet Network (MEN) Autonomy X Metro Ethernet Network (MEN) Autonomy Y Subscriber Intercarrier Network Ethernet Interworking EI-NNI Network Interworking NI-NNI Transport Network Metro Ethernet Network (MEN) Autonomy X

20 MEF External Reference Point
User Network Interface (UNI) Reference point between Metro Ethernet Network (MEN) and directly/virtualized attached interfaces of customer equipment. Interfaces between MEN and customer equipment. Is the subscriber demark point Service Interworking NNI (SI-NNI) Reference point between MEN and other public service networks (IP). Interfaces between MEN and other public services networks (ex: ATM, FR, T1/T3, IP-Sec, etc).

21 MEF External Reference Point (Cont.)
Ethernet Interworking NNI (EI-NNI) Reference point between MENs in different autonomys Network Interworking NNI (NI-NNI) Reference point between MENs in same autonomy. Interface between MEN and other public transport networks (GE, SDH/SONET, ATM, RPR, etc).

22 Services Definition Customer Equipment (CE) User Network Interface (UNI) Metro Ethernet Network Service Provider Responsibility Service Model: Services described as seen by CE, UNI to UNI

23 Ethernet Virtual Connection Types (EVC)
Point-to-Point Multipoint-to-Multipoint Leaf Root Leaf Point-to-Multipoint

24 Some Service Features Bandwidth Profile: Defines the way in which less than the full physical bandwidth of UNI can utilized by the subscriber. Basis of the “pay for the bandwidth that you need” capability of an Ethernet Service. Service Multiplexing: Multiple EVCs accessible at a single UNI. Reach multiple destinations across the MEN via a single UNI, e.g., a Gigabit Ethernet UNI. Interworking Function: Non-Ethernet services via an Interworking Function (IWF), e.g., TDM over Ethernet IWF IWF

25 Ethernet Line Service (ELINE)
ELINE service is Point-to-Point and may describe both Private Lines and Virtual Private Lines May build a Frame Relay like service

26 ELINE Service Multiplexing
In this example a single site has multiple ELINE connections to other sites multiplexed over a single UNI.

27 Ethernet LAN Service (ELAN)
Service is Multipoint-to-Multipoint fully connected

28 Protection Model Multiple levels of service resiliency enabled by flexible protection mechanism Application Protection Constraint Policy MEF Protection Mechanism End-to-End Path Protection Aggregated Line and Node Protection Topology Transport

29 Aggregated Line and Node Protection
Detour Path Network Element Ingress Network Element Network Element Network Element Egress Network Element Primary Path Network Element Detour Path

30 End-to-End Path Protection
Network Element Ingress Network Element Network Element Network Element Egress Network Element Primary Path Network Element Secondary Path Network Element Network Element

31 End-to-end OAM LMI LMI UNI Customer Edge Customer Edge
Ethernet Virtual Connection (EVC) LMI Ethernet Access Network Provider Edge Ethernet Access Network Provider Edge Internet Access Metro Ethernet Network Metro Ethernet Network ISP Router

32 OAM Management Availability Status Monitoring Scalability
Extensibility Security Tunnel and Transport Independence Layer 3 Independence

33 Summary MEF is working to fill the gaps between existing standards needed to standardize complete MEN systems. Technical work is focused on Customer Service Specifications User Interface Definition Network To Network Interface Definitions Transport Network Features for Protection, QoS, and EoS End-to-end Management Network Element Management

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