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Metro Ethernet UNI Metro Ethernet UNI Standards UpdateStandards Update

Gary SouthwellGary SouthwellVP of Product MarketingVP of Product Marketing

Internet PhotonicsInternet PhotonicsMEF Marketing Collateral co-chairMEF Marketing Collateral co-chair

gsouthwell@internetphotonics.comgsouthwell@internetphotonics.com

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AgendaAgenda

UNI – PurposeUNI – PurposeUNI – Overview of RequirementsUNI – Overview of RequirementsUNI – Architectural Fit UNI – Architectural Fit UNI – Enabled servicesUNI – Enabled servicesStatus & next steps/activitiesStatus & next steps/activities

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Ethernet Services Ethernet Services StandardizationStandardization

ServicesServicesMetro Ethernet ForumMetro Ethernet Forum

Network ImplementationNetwork ImplementationIEEE 802.1 and IETF PPVPNIEEE 802.1 and IETF PPVPN

OA&MOA&MMetro Ethernet ForumMetro Ethernet Forum

UNIUNI

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Metro Ethernet UNIMetro Ethernet UNI

• PurposePurpose – Provides a network subscriber Provides a network subscriber

edge demarcation point for a MENedge demarcation point for a MEN

• RequirementsRequirementsDefine demarcation for serviceDefine demarcation for service– connectivity, connectivity, – signaling, signaling, – ProvisioningProvisioning– Fault detection/resolutionFault detection/resolution– Monitoring and managementMonitoring and management

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Ethernet Services Model,Ethernet Services Model,Phase 1Phase 1

MetroMetroEthernetEthernetNetworkNetwork

CustomerCustomerEdgeEdge(CE)(CE)

User NetworkUser NetworkInterfaceInterface

(UNI)(UNI)

User NetworkUser NetworkInterfaceInterface

(UNI)(UNI)

CustomerCustomerEdgeEdge(CE)(CE)

ServiceServiceAttributesAttributes

A service is what the CE sees (UNI-to-UNI).A service is what the CE sees (UNI-to-UNI).The technology used inside the MEN is not visible.The technology used inside the MEN is not visible.

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User Network Interface (UNI)User Network Interface (UNI)

• Dedicated to a single SubscriberDedicated to a single Subscriber• Standard Ethernet (IEEE 802.3 – 2002)Standard Ethernet (IEEE 802.3 – 2002)

– More than 100 million devices available as CEMore than 100 million devices available as CE• Examples:Examples:

– RJ 45 Socket on Service Provider owned Ethernet RJ 45 Socket on Service Provider owned Ethernet switchswitch

– RJ45 plug on Service Provider owned cableRJ45 plug on Service Provider owned cable

The demarcation point between Service The demarcation point between Service Provider and Subscriber ResponsibilitiesProvider and Subscriber Responsibilities

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Service DefinitionsService Definitions

• Ethernet Line Service (E-Line)Ethernet Line Service (E-Line)– Point-to-Point EVCPoint-to-Point EVC– Any valid set of other service attributesAny valid set of other service attributes

• Ethernet LAN Service (E-LAN)Ethernet LAN Service (E-LAN)– Multipoint-to-Multipoint EVCMultipoint-to-Multipoint EVC– Any valid set of other service attributesAny valid set of other service attributes

• Examples for typical scenarios, e.g., LAN Examples for typical scenarios, e.g., LAN Extension, Internet Access, Headquarters Extension, Internet Access, Headquarters to Branch Officesto Branch Offices

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E-Line Service

UNI

CE

CE

CE

Point-to-Point Ethernet Virtual Circuits

Metro Ethernet Network

1 or more UNIs

UNI

Video

IP PBX

Servers

Data

IP Phone

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E-LAN Service

CE

CE

CE

Metro Ethernet Network CE

Multipoint-to-Multipoint Ethernet Virtual Circuit

UNI

UNI

UNI

UNI

IP PBX

Servers

Data

IP Phone

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UNI Reference PointUNI Reference Point

• UNI divided into UNI divided into two subsetstwo subsets– UNI-C describes the UNI-C describes the

end customer UNIend customer UNI– UNI-N describes the UNI-N describes the

end customer UNIend customer UNI

ProviderEdge

SubscriberEdge

UNI Reference Point

UNI-C

EthernetPHY

UNI-N

MENCustomerNetwork

Demark

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UNI Reference ModelUNI Reference Model

• UNI data planeUNI data plane– defines the means of transporting information across the defines the means of transporting information across the

UNI reference pointUNI reference point• UNI control planeUNI control plane

– defines the means for the customer and the MEN provider defines the means for the customer and the MEN provider to make use of the UNI data planeto make use of the UNI data plane

• UNI management planeUNI management plane– controls the operation of the UNI data and control planecontrols the operation of the UNI data and control plane

• Ethernet frame flow • 802.1Q tagging • Static service discovery

• Dynamic connection setup

• QoS mgmt • OAM

UNI Management Plane UNI Data Plane UNI Control Plane

• Protection & Restoration Provisioning •

• Ethernet frame flow • Tagging • Static service discovery

• Dynamic connection setup

• QoS mgmt • OAM

UNI Management Plane UNI Data Plane UNI Control Plane

• Protection & Restoration Provisioning • • Traffic Management

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UNI Data PlaneUNI Data Plane

• Ethernet frame flowEthernet frame flow– IEEE 802.3 frames (only)IEEE 802.3 frames (only)

• TaggingTagging– Allows customer equipment (CE) to send Allows customer equipment (CE) to send

802.1q tagged frames across the UNI for 802.1q tagged frames across the UNI for segmentation purposessegmentation purposes

• Traffic MgmtTraffic Mgmt– Binds the subscriber transmissions to traffic Binds the subscriber transmissions to traffic

policies as set by an SLApolicies as set by an SLA

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UNI Control PlaneUNI Control Plane

• a static service discovery function a static service discovery function that allows no or auto-configuration that allows no or auto-configuration of the CE (PVC mode)of the CE (PVC mode)

• a dynamic connection setup function a dynamic connection setup function that allows dynamic establishment of that allows dynamic establishment of Ethernet services (SVC mode).Ethernet services (SVC mode).

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UNI Management PlaneUNI Management Plane

• QOS MgmtQOS Mgmt– Allows provisioning of service attributes Allows provisioning of service attributes

thought traffic identifiersthought traffic identifiers• Protection & restorationProtection & restoration

– Allows links from the (CE) into the MEN to be Allows links from the (CE) into the MEN to be protected by various meansprotected by various means

• OAMOAM– Connectivity verification, performance Connectivity verification, performance

monitoring and SLA stats gatheringmonitoring and SLA stats gathering

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Ethernet Services Control FunctionEthernet Services Control Function

• A UNI-N - Demarc Component (ESCF)A UNI-N - Demarc Component (ESCF)• ESCFESCF

– SP’s network equipment that provides the SP’s network equipment that provides the functional element required to meter, police and functional element required to meter, police and shape the flow to and from the SP’s Demarcshape the flow to and from the SP’s Demarc

• 1st point where policy is enforced in the MEN1st point where policy is enforced in the MEN

Data plane Control plane

Management plane UNI-C

Data plane Control plane

Management plane

Control plane Data plane

Management plane

ESCF

Control plane Data plane

Management plane

CE

UNI-N

Ethernet Virtual

Connection

Ethernet Access Link

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Ethernet Virtual ConnectionEthernet Virtual Connection(EVC)(EVC)

• Association of two or more UNIsAssociation of two or more UNIs• Frames can only be exchanged among Frames can only be exchanged among

the associated UNIsthe associated UNIs• A frame sent into the SP network via a A frame sent into the SP network via a

particular UNI MUST NOT be delivered particular UNI MUST NOT be delivered out of the SP network via that UNIout of the SP network via that UNI

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EVCS & Closed User GroupsEVCS & Closed User Groups

• EVCS can form closed user groups (CUGS)EVCS can form closed user groups (CUGS)– Marked by VLANs or other means of identification Marked by VLANs or other means of identification

• Frames can only be exchanged among the Frames can only be exchanged among the associated UNIsassociated UNIs

• Note UNIs can support multiple CUGsNote UNIs can support multiple CUGs

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Point-to-Point EVCPoint-to-Point EVC

Exactly two UNIs are associated.Exactly two UNIs are associated.

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Multipoint-to-Multipoint Multipoint-to-Multipoint EVCEVC

• Two* or more UNIs are associatedTwo* or more UNIs are associated

• A flooded, broadcast or multicast ingress frame is A flooded, broadcast or multicast ingress frame is typically replicated and delivered to all of the other typically replicated and delivered to all of the other UNIsUNIs

* A MP2MP EVC with two UNIs is different than a P2P EVC since additional UNIs * A MP2MP EVC with two UNIs is different than a P2P EVC since additional UNIs can be added at any time.can be added at any time.

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Service MultiplexingService Multiplexing

AA

DD

CC

BB

• Multiple EVCs at a UNIMultiple EVCs at a UNI

• Efficient use of CE portEfficient use of CE port

• Multiple revenue streams per SP UNIMultiple revenue streams per SP UNI

ServiceServiceMultiplexingMultiplexing

EVCEVC11

EVCEVC22

EVCEVC33

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UNI Service ModelUNI Service Model

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UNI Traffic and Performance UNI Traffic and Performance Control examplesControl examples

• Ingress policing based on a two rate, three Ingress policing based on a two rate, three color Token Bucket modelcolor Token Bucket model– Similar to the CIR, BSimilar to the CIR, Bcc, B, Bee of Frame Relay of Frame Relay– Allows Subscriber to buy bandwidth with high Allows Subscriber to buy bandwidth with high

granularitygranularity• Performance parameters, e.g., Frame Performance parameters, e.g., Frame

Delay, Frame Loss, AvailabilityDelay, Frame Loss, Availability– Definitions for the basis of a Service Level Definitions for the basis of a Service Level

Specification in a Service Level AgreementSpecification in a Service Level Agreement

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UNI EVC Control ExampleUNI EVC Control Example

• Customer Equipment configuration controlCustomer Equipment configuration control

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UNI ModesUNI Modes

1.1. Start with Static UNI-C config…100% of Start with Static UNI-C config…100% of installed base compatibleinstalled base compatible

• No chgs to Customer device config. No chgs to Customer device config. • E.g. assigned VLANs)E.g. assigned VLANs)

2.2. Introduce auto provisioningIntroduce auto provisioning• DCE Access to CE via LMI to learn what it is DCE Access to CE via LMI to learn what it is

connected to and configures CE connected to and configures CE automatically automatically

• E.g. configured VLANsE.g. configured VLANs

PVCPVC

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UNI ModesUNI Modes

1.1. UNI-C requests via signaling what UNI-C requests via signaling what EVCs it desires connectivity withEVCs it desires connectivity with

2.2. Negotiates the service parameters if Negotiates the service parameters if applicableapplicable

3.3. Provides for backward comaptibilityProvides for backward comaptibility

SVC SVC (Full Definition still pending)(Full Definition still pending)

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Ethernet OA&MEthernet OA&M

CECECECE

OA&MOA&MOA&MOA&MOA&MOA&M

• AvailabilityAvailability• Status MonitoringStatus Monitoring• ScalabilityScalability• ExtensibilityExtensibility

• SecuritySecurity• Tunnel and Tunnel and

Transport IndependenceTransport Independence• Layer 3 IndependenceLayer 3 Independence

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StatusStatus

• Ethernet UNI 1.0 in draftEthernet UNI 1.0 in draft• UNI 1 Interoperability Agreement UNI 1 Interoperability Agreement

work in processwork in process• UNI 2 - work in processUNI 2 - work in process

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Thank YouThank You