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Developing Ethernet Services Offerings with MEF Specifications
Dmitry Dergalov, Technical DirectorRAD Data Communications-Russia www.rad.ruTel/Fax +7 (495) 231-1239/1097
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MEF/Carrier Ethernet Scope
Business Services
Residential Transport
Metro, National, InternationalMetro, National, International
HD TV, TVoD, VoD, Content Providers
Host applications, Consolidated
Servers
Gaming, DR, ERP
Voice/VideoTelephony
Internet information & Software apps
Mobile Backhaul
UNI
UNI
UNI
E-LAN
UNI
UNIUNI
E-Tree
UNI
UNI
E-Line
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Carrier Ethernet provides consistent services delivered to users connected over the widest variety of access networks
Delivered Over Variety of Access Media
COAXDirect Fiber
WDM Fiber
DS3/E3
Bonded Copper
Bonded T1/E1
Carrier 2
TDM
Ethernet
Ethernet Ethernet
Ethernet
EthernetEthernet
Ethernet
Direct Fiber
SONET/ SDH
PON Fiber
EthernetEthernet
Ethernet
Ethernet over Fixed Wireless
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Global Interconnect – Major Impact in 2010
• Rapid growth of Carrier Ethernet exchanges
– 100’s service providers connecting
– Local, Region, Global Interconnections
• Industry building critical mass for Carrier Ethernet Global Interconnect
– New Ethernet Service providers joining Carrier Ethernet community
– International Carrier Ethernet network forming
UNI
End-User
UNI
End-User
Carrier Ethernet
Exchange
Carrier Ethernet Service Providers
Carrier Ethernet Service Providers
ENNI
Direct Connect
ENNI
ENNI
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MEF: Defining Body of Carrier Ethernet
• 174 Member Companies• 78 Service Providers• Global Representation
Standards Education Compliance
Program Focus 2010-2011:Global Interconnect
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Five Attributes of Carrier Ethernet
Services – must support Translation of MEF EVPL, E-Line,
E-LAN service types and profiles with multiple CoSQuality of Service – Service MonitoringMust support enforceable, measurable, end-to-end service (frame delay, delay variation, availability).
Reliability – Protection. Must provide protection: carrier class with geographical diversity
Service Management – Process IntegrationMust support normalized process human and system for process transactions
Scalability – Scalability. Must support and access millions of EVCs and worldwide locations with scalable processes
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Carrier Ethernet Terminology
• UNI (User-to-Network Interface)– Physical interface/demarcation between service provider and subscriber– Service start/end point
• Ethernet Virtual Connection (EVC)– An association of two or more UNIs
• Three types of EVC– Point-to-Point– Multipoint-to-Multipoint– Rooted Multipoint (Point-to-Multipoint)
• EVCs and ServicesIn a Carrier Ethernet network, data is transported across Point-to-Point, Point-to-Multipoint and Multipoint-to-Multipoint EVCs according to the attributes and definitions of the E-Line and E-LAN services
• NNI (Network-to-Network Interface)– Demarcation/peering point
• Between service providers (NNI)• Between service provider internal networks (I-NNI)
(For full presentation of Ethernet Services visit www.MetroEthernetForum.org/presentations)
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MEF has Standardized Ethernet Services
E-Line Service – used to create• Ethernet Private Lines (EPL)• Virtual Private Lines• Ethernet Internet Access
UNI
Multi-point to Multi-point EVC
Multi-point to Multi-point EVC
UNIUNI
UNIPoint-to-Point EVCPoint-to-Point EVC
UNI
E-LAN Service – used to create
• Multipoint L2 VPNs• Transparent LAN Service• Multicast networks
E-Tree Service – used to create
• Rooted multi-point L2 VPNs• Broadcast networks• Telemetry networks
Rooted Multipoint EVC
Rooted Multipoint EVC
UNI
UNI
UNI
Enterprise Clients
SoHo & Residential Triple-Play
Mobile Data/Video
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Carrier Ethernet Architecture(1)
OSS/BSS
App Layer
Eth Layer
Tran Layer
MEF
Enabled by Carrier Ethernet
Enables Carrier Ethernet
Services, ENNI, OAM, Services, ENNI, OAM, CoS, CertificationCoS, Certification
MEF implementation recommendations
key to Carrier Ethernet worldwide adoption
and the elements of Global Interconnect
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Ethernet Services Layer Terminology
Carrier Ethernet Architecture (2)
Service Provider 1
Carrier Ethernet Network
CECE
UNIUNI
Ethernet Services “Eth” Layer
Subscriber Site
ETHUNI-CETH
UNI-CETH
UNI-NETH
UNI-NETH
UNI-NETH
UNI-NETH
E-NNIETH
E-NNIETH
UNI-CETH
UNI-C
UNI: User Network Interface, UNI-C: UNI-customer side, UNI-N network sideNNI: Network to Network Interface, E-NNI: External NNI; I-NNI Internal NNI
CE: Customer Equipment
UNIUNI
CECE
I-NNII-NNI E-NNIE-NNI
Service Provider 2
I-NNII-NNI
ETHE-NNIETH
E-NNI
Subscriber Site
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Bandwidth Profiles & Traffic Management
Bandwidth Profiles per EVC (service) and per CoS– CIR (Committed Information Rate)
• CIR assured via Bandwidth Reservation and Traffic Engineering
– EIR (Excess Information Rate)
• EIR bandwidth is considered ‘excess’
• Traffic dropped at congestion points in the network
– CBS/EBS (Committed/Excess Burst Size)
• Higher burst size results in improved performance
EVC-1
CIR
EIREVC-2
CIR
EIR
EVC-3
CIR
EIR
UNIEVC 1EVC 1
CoS 6CoS 61Mbps CIR for VoIP
CoS 2CoS 26Mbps CIR for VPN data traffic
3Mbps for Internet AccessEVC 2EVC 2
10Mbps UNI
(port)
BWPs can divide bandwidth per EVC (service) over a single UNI
– Multiple services over same port (UNI)– CoS markings enable the network to
determine the network QoS to provide
CIR defines the assured bandwidth EIR CIR defines the assured bandwidth EIR improves the network’s Goodput improves the network’s Goodput
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• Current implementations – Limited in features,
proprietary and/or ad-hoc– Differing feature and
functionality transparency– Do not support MEF Carrier
Ethernet services– Require extensive discussions
between operators in order to verify each operator’s Carrier Ethernet product and operational capabilities
Operators need to interconnect their Carrier Ethernet Networks
Carrier Ethernet Interconnect Challenge
Operator A
Operator BUNI A1UNI A2
UNI A3
UNI B2
UNI B1 UNI B3
Operator C
UNI C3UNI C1
UNI C2Operator D
UNI D1
UNI D2UNI D3
Proprietary interconnect
Every Interconnect arrangement is uniqueEvery Interconnect arrangement is unique
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Standardizedinterconnect
UNI D3
UNI A1
UNI C3
UNI A2
UNI B2
UNI B3
UNI C1UNI D2
Towards Standardized Interconnections
Operator A Operator B
Operator C Operator D
Standardized Carrier Ethernet ENNI Interconnect (MEF 26)
• Enables operators to…– Streamline their interconnect
operations– Cost effectively scale up
deployment of Carrier Ethernet services
– Provide wider range of services to enterprise customers
– Reach new markets at lower cost
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Interconnects facilitate service delivery that span multiple operators networks
• Standard Carrier Ethernet service handoffs between operators simplifies provisioning and troubleshooting across multiple networks
• Reduces time to revenue by cutting lead time to deliver the service• Lowers cost to manage the service once its turned up
Carrier Ethernet Interconnect Brings Global Reach
ISPPOP
Internet Service Multiplexed
Ethernet UNI ENNIENNI
ENNIENNI
Carrier Ethernet Network B
Carrier Ethernet Network A
Carrier Ethernet Network C
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ENNI Baseline (MEF26)
Transit or Carrier Ethernet ExchangeModel
Simple 2-carrier Model
Service ProviderNetwork
Operator Network Subscriber
Sites
ENNIOVC_A OVC_B
UNI
UNI
UNI UNI
UNI
UNI
Transit Operator orCarrier Ethernet Exchange
Service Provider 1Network
Subscriber Sites
ENNIOVC_A
OVC_B
UNI
UNI
UNI UNI
UNI
UNI
ENNI
Service Provider 2 Network
Subscriber Sites
OVC_C
• External Network-to-Network Interface (ENNI) for service availability
– Simple 2-carrier and multi-carrier service models– Ethernet Virtual Connection (EVC) between UNIs
spread across multiple networks– Operator Virtual Connection (OVC) for each EVC
segment
• Key ENNI requirements– Services: p2p and mp EVC types, single and multiple
CoS per EVC– Encapsulation: Standard S-Tag frame format – Scalability: 1 and 10 Gbps PHYs– ENNI Protection: 2-link LAG, active/standby, LACP
Subscriber Sites
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Carrier Ethernet Exchange Model
• Implements MEF ENNI to enable Carrier Ethernet interconnection at strategic points
• Enables multiple virtual connections over a single physical connection
• Exchange presents an MEF ENNI interface to connected service providers and acts as an MEF Operator Virtual Connection (OVC)
• Simplifies and lowers implementation, costs and creates scalability up and down
• Enables much larger market for Ethernet Services
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ENNI
Carrier Ethernet Exchange Model• Eliminates NxN connections, while retaining service differentiation
Service Provider(Access)
Service Provider
UNI
End-User
Ethernet Virtual Connection (EVC)
Service Provider’s OVC*
Service Provider’s OVC*
ENNI
ENNI
UNI
End-User
UNI
End-User
UNI
End-User
UNI
End-User
UNI
End-User
Exchange OVC
Carrier
Ethernet
Exchange
Carrier
Ethernet
Exchange
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Carrier Ethernet Scope and ReachBringing vastly extended scalability for business and residential users
Wireless Backhaul
Voice Gateway
Voice/VideoTelephony
HD TVTVoD, VoD
Gaming, BusinessBackup, ERP
ResidentialTriple-Play
Broadbandmobile data/video
VideoSource
VideoSource
Small/Medium Business
Internet
FTTx and DSLAM , Cable Modem
E-Line andE-LAN service
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TDM Circuits(e.g. T1/E1 Lines)
Circuit Emulation Services over Carrier Ethernet
• Enables TDM Services to be transported across Carrier Ethernet network, re-creating the TDM circuit at the far end– Runs on a standard Ethernet Line Service (E-Line)
Carrier Ethernet NetworkTDM Circuits
(e.g. T1/E1 Lines)Circuit Emulated
TDM Traffic
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Carrier Ethernet Architecture for Cable OperatorsHeadend Hub
EQAM
CMTS
Optical Metro Ring Network
VideoServer
D2A
AdInsertion
E-LAN
E-LineBusiness Services over Fiber (GigE)
Voice gateway
Voice/VideoTelephony
Digital TV, VOD,
Interactive TV, Gaming
Managed BusinessApplications
InternetAccess
AnalogTV Feeds
A2D
HubUNIUNI
CECE
E-NNIE-NNI
Another MSO or carrierNetwork
EoDOCSIS(future)
EoT1/DS3
PON
Greenfield Residential & Business Services
EoSONET/SDH
CECEUNIUNI
WDM
UNIUNIHome RunFiber
EoCoaxEoHFC
SwitchedFiber
Business Park
Business Services
Node
E-LineE-LAN
CECE
UNIUNI
CECE
WirelessPlant
ExtensionLeasedT1/DS3
CECEUNIUNI
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Related MEF Services Specifications
Purpose Defines the Ethernet Services (EPL, EVPL, E-Line, ELAN, and E-Tree)
MEF 6.1MEF 6.1
PurposeDefines the service attributes and parameters required to offer the services defined in MEF 6. Updated from Original MEF 10 in October 2006
Audience
Appropriate for equipment vendors, service providers, and business customers, since it provides the fundamentals required to build devices and services that deliver Carrier Ethernet. For Enterprise users it gives the background to Service Level Specifications for Carrier Ethernet Services being offered by their Service Providers and helps to plan Ethernet Services as part of their overall network.
Ethernet Services Attributes Phase 2 MEF 10.1MEF 10.1
Metro Ethernet Services Definitions Phase II
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Buyer Benefits
• Reduce operating costs – Through aggregation and inter-operability of multiple Carrier Ethernet services
over a single standards-based physical connection • Reduce capital costs
– Through use of logical connections instead of capital intensive physical assets (e.g. POPs, circuits, etc.)
• Increase footprint and reach larger and/or new markets– Geographic (e.g. emerging markets, regional markets)– Capacity (e.g. 1 GbE, 10 GbE) – Capability to address new market segments (e.g. residential, enterprise, etc.)
• Reduce time to market and improve financial benefits– Building a standardized ENNI is faster than building out proprietary
infrastructure– Quicker recognition of internal SP infrastructure projects’ financial
benefits• Increase business efficiencies
– Lower management costs through proven inter-operability processes (ordering, implementation, operations, billing)
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Seller Benefits
• Reduce operating costs – Spreading fixed operating costs over a large number of inter-operable, standards-
based virtual connections
• Reduce capital costs– Faster amortization of initial investment through larger number of virtual
connections
• Defend footprint– By providing efficient access to seller’s footprint under seller SP commercial terms
• Reduce time to market and improve financial benefits– More efficient sales distribution channel using ENNIs instead of multiple EPLs – Enables faster revenue recognition from retail customers
• Increase business efficiencies– Through standardized ENNI fulfillment and repair processes
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Summary
• Implementation of Carrier Ethernet Global Interconnects worldwide with continued acceleration in 2011 and beyond
• MEF Global Interconnect Program, consisting of MEF Specifications, Certification and Connect, provides a common and standard framework for the industry
• Collectively, Global Interconnect exists to enable standardized and streamlined delivery of MEF-certified Carrier Ethernet services to scale locally and globally:– For end users the worldwide connection is transparent and seamless.
– For service providers it unlocks new revenue opportunities: expanding the numbers of locations that can be reached economically
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MEF Global Interconnect Summary
• Totality of interconnected autonomous Carrier Ethernet networks worldwide
• Enabling– Standardized and streamlined delivery of MEF-
certified Carrier Ethernet services– End-to-end Class of Service, management and
protection
Standards Education Compliance
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Thank you!
Visit the following MEF Web sites for more details:
www.MetroEthernetForum.org and www.EthernetAcademy.net