030602.030602.11
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
[email protected]@internetphotonics.com
030602.030602.22
AgendaAgenda
UNI – PurposeUNI – Purpose
UNI – Overview of RequirementsUNI – Overview of Requirements
UNI – Architectural Fit UNI – Architectural Fit
UNI – Enabled servicesUNI – Enabled services
Status & next steps/activitiesStatus & next steps/activities
030602.030602.33
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
030602.030602.44
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
030602.030602.55
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.
030602.030602.66
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
030602.030602.77
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
030602.030602.88
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
030602.030602.99
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
030602.030602.1010
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
030602.030602.1111
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
030602.030602.1212
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
030602.030602.1313
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).
030602.030602.1414
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
030602.030602.1515
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
030602.030602.1616
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
030602.030602.1717
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
030602.030602.1818
Point-to-Point EVCPoint-to-Point EVC
Exactly two UNIs are associated.Exactly two UNIs are associated.
030602.030602.1919
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.
030602.030602.2020
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
030602.030602.2222
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
030602.030602.2323
UNI EVC Control ExampleUNI EVC Control Example
• Customer Equipment configuration controlCustomer Equipment configuration control
030602.030602.2424
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
030602.030602.2525
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)
030602.030602.2626
Ethernet OA&MEthernet OA&M
CECECECE
OA&MOA&MOA&MOA&M
OA&MOA&M
• AvailabilityAvailability• Status MonitoringStatus Monitoring• ScalabilityScalability• ExtensibilityExtensibility
• SecuritySecurity• Tunnel and Tunnel and
Transport IndependenceTransport Independence• Layer 3 IndependenceLayer 3 Independence
030602.030602.2727
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
Top Related