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MEF Technical ActivitiesMEF Technical Activities
Paul Bottorff, Co-Chair MEF Paul Bottorff, Co-Chair MEF Technical CommitteeTechnical Committee
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What is the MEFWhat is the MEF• The Metro Ethernet Forum is a non-profit The Metro Ethernet Forum is a non-profit
organization dedicated to accelerating the organization dedicated to accelerating the adoption of optical Ethernet as the technology of adoption of optical Ethernet as the technology of choice in metro networks worldwide. choice in metro networks worldwide.
• The Forum is comprised of leading service The Forum is comprised of leading service providers, major incumbent local exchange providers, major incumbent local exchange carriers, top network equipment vendors and carriers, top network equipment vendors and other prominent networking companies that other prominent networking companies that share an interest in metro Ethernet. It has 60 share an interest in metro Ethernet. It has 60 members as of February, 2002.members as of February, 2002.
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MEF Key ObjectivesMEF Key Objectives• Build consensus and unite Build consensus and unite service providers, equipment service providers, equipment
vendors, end customers on optical Ethernetvendors, end customers on optical Ethernet• Facilitate implementation Facilitate implementation of optical Ethernet standards to allow of optical Ethernet standards to allow
delivery of delivery of Ethernet servicesEthernet services and make and make Ethernet-based metro Ethernet-based metro transport networks carrier-classtransport networks carrier-class
• Enhance worldwide awarenessEnhance worldwide awareness of the benefits of optical of the benefits of optical Ethernet services and Ethernet-based metro transport Ethernet services and Ethernet-based metro transport networksnetworks
• Enable Ethernet applications and services, Enable Ethernet applications and services, building on the building on the physical transportphysical transport specified by e.g. 10GEAspecified by e.g. 10GEA
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MEF StructureMEF Structure
Awareness
Marketing Committee
Standards
Technical Committee
Board of Directors
Officers
Members
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MEF: Diverse LeadershipMEF: Diverse LeadershipThe MEF Board of Directors is comprised of The MEF Board of Directors is comprised of representatives from:representatives from:– BellSouthBellSouth– SBCSBC– France TelecomFrance Telecom– Rockefeller Group Telecommunications ServicesRockefeller Group Telecommunications Services – Agilent TechnologiesAgilent Technologies– Procket NetworksProcket Networks– AtricaAtrica– Nortel Networks Nortel Networks – AlcatelAlcatel
For more information about the MEF leadership please For more information about the MEF leadership please visit http://www.MetroEthernetForum.org/visit http://www.MetroEthernetForum.org/
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Marketing Committee Structure
Messaging Collateral
Sub-committee
Economic Analysis
Sub-committee
EventsSub-committee
Marketing Committee
• Marketing committee is divided into three areas
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Technical Committee Structure
Architecture Sub-committee
Services Sub-committee
Management Sub-committee
Protocol & Transport
Sub-committee
All Members
Areas
Technical Committee
• Technical committee is divided into five specialization areas
TestMethods
Sub-committee
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Approach to Technical Approach to Technical StandardsStandards
IEEEIEEE802802
IETFIETF
ITUITU OIFOIF
MPLSMPLSForumForum
10 GE10 GEAllianceAlliance
Etc.Etc.
Etc.Etc.
Etc.Etc.
Etc.Etc.
MEFMEF
Use existing Standards and only fill the Use existing Standards and only fill the technical gaps for Metro Ethernettechnical gaps for Metro Ethernet
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Document TypesDocument Types• Implementation AgreementsImplementation Agreements
– Building consensus on existing standardsBuilding consensus on existing standards• Test ProceduresTest Procedures
– Promoting/Performing Interoperability testingPromoting/Performing Interoperability testing• Position StatementsPosition Statements
– Proposing work for existing standards bodiesProposing work for existing standards bodies• Technical SpecificationsTechnical Specifications
– Developing new standards within MEFDeveloping new standards within MEF
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TC Work Is Divided By Specialization Area
Architecture Sub-committee
Services Sub-committee
Management Sub-committee
Protocol & Transport
Sub-committee
All Members
Areas
Technical Committee
TestMethods
Sub-committee
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ArchitectureArchitecture• Metro Ethernet Network (MEN) Reference ModelMetro Ethernet Network (MEN) Reference Model
– User Network Interface (UNI) User Network Interface (UNI) – Network to Network Interfaces (NNIs) Network to Network Interfaces (NNIs)
• MEN FrameworkMEN Framework– defines the modeling conventions for the functional elements defines the modeling conventions for the functional elements
which compose a MEN which compose a MEN – Provides common terminology for all MEF technical documentsProvides common terminology for all MEF technical documents
• User Network Interface (UNI)User Network Interface (UNI)– The demark for customer or subscriber attachmentThe demark for customer or subscriber attachment
• Ethernet Interworking NNI (EI-NNI)Ethernet Interworking NNI (EI-NNI)– Interface between autonomous systemsInterface between autonomous systems
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ServicesServices• Ethernet Services Model Ethernet Services Model • Ethernet Definitions Ethernet Definitions
– Ethernet Line Services (ELINE)Ethernet Line Services (ELINE)– Ethernet LAN Services (ELAN)Ethernet LAN Services (ELAN)– Circuit Emulation Service (CES) Circuit Emulation Service (CES)
• Bandwidth Profiles ParametersBandwidth Profiles Parameters– Committed Information Rate (CIR)Committed Information Rate (CIR)– Peak Information Rate (PIR) Peak Information Rate (PIR)
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Transport and ProtocolTransport and Protocol• Protection Protection
– Protection Framework describes a model and Protection Framework describes a model and framework to deliver network protection schemesframework to deliver network protection schemes
• EMF EMF – Ethernet Multiplexor provides a subset of the functions Ethernet Multiplexor provides a subset of the functions
under discussion at IEEE 802.1 Provider Bridges under discussion at IEEE 802.1 Provider Bridges • EoSEoS
– Agreements for transport of Ethernet over SonetAgreements for transport of Ethernet over Sonet
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ManagementManagement• Element Management SystemElement Management System
– defines the requirements for the central systems which defines the requirements for the central systems which manage the network elements of a MENmanage the network elements of a MEN
• EMS/NMS Information Model EMS/NMS Information Model – defines a vendor independent data model for defines a vendor independent data model for
information exchanged between the service provider’s information exchanged between the service provider’s NMS and the MEN EMS NMS and the MEN EMS
• OAM ManagementOAM Management– defines end-to-end OAM for the service assurance defines end-to-end OAM for the service assurance
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MEF Technical Committee Dash BoardMEF Technical Committee
Management Area
OAM&P
ArchitectureArea
MEN Architecture
Protocol & TransportArea
QOS
UNI
QOS Framework d2
UNI Framework d3
ProtectionProtection
Framework d3
Protection Requirements d3
MPLS Protection IA d1
EoS EoS IA d1
Services Area
EthernetServices
EthernetServices
Definitions d2
EthernetServices
Model d4
Process Ad-Hoc
LegendGray Color = Not Approved ProjectOrange Color = Approved ProjectBlue Color = Draft StatusGreen Color = Approved StandardRed Color = Sent to Ballot
MEN Architecture FW Part 1 d1MEN Architecture FW Part 2MEN Architecture FW part 3MEN Architecture FW part 4MEN Architecture FW part 5
EMS MgmtEMS Requirements d1
TMTraffic PerformanceParameters d3
EMS-NMS Information Model d3
EMS-NMS IfCES
CES Requirements d2
UNI Requirements d2
NI-NNIEI-NNI
UNI PVC IA d1
TC Rules and Procedures
EMF
Ethernet Services OAM d4
MPLS NI-NNI D1EI-NNI TS d1
Test Area
Conformance &Performance
EMF TS d1
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16 Approved Drafts16 Approved DraftsDoc # Draft# Title First Draft Current Draft Status Ballot% #Votes January
D00001 4 Ethernet Service Model Apr-02 Jan-03 Straw 81/19/- 16 Straw xD00002 3 A Framework For Metro Ethernet Protection Apr-02 Oct-02 Letter 74/26/- 27D00003 1 Implementing Metro Ethernet Protection using MPLS Mechanisms Jul-02 Jul-02 Straw 65/35/- 17D00004 3 Requirements for Metro Ethernet Protection Jan-02 Oct-02 Straw 77/23/- 22D00005 4 Ethernet Service OAM Apr-02 Jan-03 Draft xD00007 1 Metro Ethernet Architecture Framework- Part 1: Generic Framework Jul-02 Jul-02 DraftD00008 2 UNI Requirements Jul-02 Oct-02 Straw 68/32/0 19 Straw xD00009 3 UNI Framework Specification Apr-02 Jan-03 Draft xD00011 2 Ethernet Layer 2 Service Definitions Apr-02 Oct-03 Straw 70/29/- 17 Straw xD00012 3 EMS-NMS Information Model Apr-02 Oct-02 Draft Straw xD00013 2 CES Requirements Jul-02 Oct-03 Draft xD00014 1 EMS Requirements Jan-02 Jan-02 Straw 82/18/- 17 StrawD00015 3 Traffic Performance Parameters Apr-02 Oct-02 Straw Straw xD00016 2 QoS Framework Apr-02 Jul-02 DraftD00017 1 EOS Implementation Agreement Jul-02 Jul-02 DraftD00018 1 EI-NNI TS Oct-02 Oct-02 Draft xD00019 1 EMF TS Jan-03 Jan-03 Draft x
Approved interworking project xCES contributions to straw ballot x
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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.
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Ethernet ServicesLayer
(802.3 PHY, SDH/SONET,MPLS, OTN, ...)
Transport Layer (s)
(Ethernet)
• Ethernet Services layer (ETH)
• uses services from its Transport Layer(s)
• provides services to its Application Services Layer(s)
(VoIP, IP, MPLS, PDH, ...)
Application ServicesLayer (s)
MEN Layered Network Model
Domain
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SubscriberMetro Ethernet
Network (MEN)Autonomy Y
UNI
EthernetInterworkingEI-NNI
Metro Ethernet Network (MEN)
Autonomy X
MEF External Reference Points
Metro Ethernet Network (MEN)
Autonomy X
NetworkInterworkingNI-NNI
Public Service Networks
Internet, FR, etc.Service Interworking SI-NNI
TransportNetwork
IntercarrierNetwork
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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).
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• 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).
MEF External Reference Point (Cont.)
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Services DefinitionServices Definition
MetroMetroEthernetEthernetNetworkNetwork
CustomerCustomerEquipmentEquipment
(CE)(CE)User NetworkUser Network
InterfaceInterface(UNI)(UNI)
Service ProviderService ProviderResponsibilityResponsibility
Service Model: Services described as seen by CE, UNI to UNIService Model: Services described as seen by CE, UNI to UNI
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Ethernet Virtual Connection Ethernet Virtual Connection Types (EVC)Types (EVC)
Point-to-PointPoint-to-Point Multipoint-to-MultipointMultipoint-to-Multipoint
RootRoot
LeafLeaf
LeafLeaf
Point-to-MultipointPoint-to-Multipoint
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Some Service FeaturesSome Service FeaturesBandwidth Profile:Bandwidth Profile: Defines the way in which less Defines the way in which less than the full physical bandwidth of UNI can utilized than the full physical bandwidth of UNI can utilized by the subscriber. Basis of the “pay for the by the subscriber. Basis of the “pay for the bandwidth that you need” capability of an Ethernet bandwidth that you need” capability of an Ethernet Service. Service.
Service Multiplexing:Service Multiplexing: Multiple EVCs accessible at a Multiple EVCs accessible at a single UNI. Reach multiple destinations across the single UNI. Reach multiple destinations across the MEN via a single UNI, e.g., a Gigabit Ethernet UNI.MEN via a single UNI, e.g., a Gigabit Ethernet UNI.
IWFIWF IWFIWFInterworking Function:Interworking Function: Non-Ethernet Non-Ethernet services via an Interworking Function services via an Interworking Function (IWF), e.g., TDM over Ethernet(IWF), e.g., TDM over Ethernet
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Ethernet Line Service Ethernet Line Service (ELINE)(ELINE)
• ELINE service is Point-to-Point and may describe both ELINE service is Point-to-Point and may describe both Private Lines and Virtual Private LinesPrivate Lines and Virtual Private Lines
• May build a Frame Relay like serviceMay build a Frame Relay like service
ELINEELINE
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ELINE Service MultiplexingELINE Service Multiplexing
• In this example a single site has multiple ELINE In this example a single site has multiple ELINE connections to other sites multiplexed over a single UNI.connections to other sites multiplexed over a single UNI.
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Ethernet LAN Service Ethernet LAN Service (ELAN)(ELAN)
• Service is Multipoint-to-Multipoint fully Service is Multipoint-to-Multipoint fully connectedconnected
ELANELAN
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MEF Protection MechanismMEF Protection Mechanism
Protection ModelProtection Model
Aggregated Line andAggregated Line andNode ProtectionNode Protection
End-to-End PathEnd-to-End PathProtectionProtection
TopologyTopology
TransportTransport
Application Protection Constraint PolicyApplication Protection Constraint Policy
Multiple levels of service resiliency enabled Multiple levels of service resiliency enabled by flexible protection mechanism by flexible protection mechanism
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Aggregated Line and Node Aggregated Line and Node Protection Protection
IngressIngressNetworkNetworkElementElement
NetworkNetworkElementElement
NetworkNetworkElementElement
EgressEgressNetworkNetworkElementElement
PrimaryPrimaryPathPath
NetworkNetworkElementElement
NetworkNetworkElementElement DetourDetour
PathPath
DetourDetourPathPath
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NetworkNetworkElementElement
NetworkNetworkElementElement
End-to-End Path Protection End-to-End Path Protection
IngressIngressNetworkNetworkElementElement
NetworkNetworkElementElement
NetworkNetworkElementElement
EgressEgressNetworkNetworkElementElement
PrimaryPrimaryPathPath
NetworkNetworkElementElement
NetworkNetworkElementElement
SecondarySecondaryPathPath
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End-to-end OAMEnd-to-end OAM
Metro Ethernet Network
Metro Ethernet Network
ISP Router
Internet Access
ProviderEdge
ProviderEdge
Ethernet Virtual Connection (EVC)
Ethernet Access Network
Ethernet Access Network
CustomerEdge
CustomerEdge
UNIUNI LMILMI LMILMI
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OAM ManagementOAM Management• AvailabilityAvailability• Status MonitoringStatus Monitoring• ScalabilityScalability• ExtensibilityExtensibility• SecuritySecurity• Tunnel and Transport IndependenceTunnel and Transport Independence• Layer 3 IndependenceLayer 3 Independence
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SummarySummary• MEF is working to fill the gaps between MEF is working to fill the gaps between
existing standards needed to standardize existing standards needed to standardize complete MEN systems.complete MEN systems.
• Technical work is focused onTechnical work is focused on– Customer Service SpecificationsCustomer Service Specifications– User Interface DefinitionUser Interface Definition– Network To Network Interface DefinitionsNetwork To Network Interface Definitions– Transport Network Features for Protection, QoS, Transport Network Features for Protection, QoS,
and EoSand EoS– End-to-end ManagementEnd-to-end Management– Network Element ManagementNetwork Element Management