Carrier Ethernet Service Overview (Metro Ethernet Forum)


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Carrier Ethernet Service Overview (Metro Ethernet Forum)

  1. 1. Carrier Ethernet Services Overview August 2008
  2. 2. Purpose <ul><li>Carrier Ethernet Services Overview </li></ul><ul><ul><li>This presentation defines the MEF Ethernet Services that represent the principal attribute of a Carrier Ethernet Network </li></ul></ul><ul><ul><li>This presentation is intended to give a simple overview as a grounding for all other MEF documents </li></ul></ul>
  3. 3. Agenda <ul><li>What is Carrier Ethernet? </li></ul><ul><li>Carrier Ethernet Terminology </li></ul><ul><ul><li>The UNI, NNI, MEN. </li></ul></ul><ul><ul><li>Ethernet Virtual Connections (EVCs) </li></ul></ul><ul><li>EVCs and Services </li></ul><ul><li>E-Line Services </li></ul><ul><ul><li>Ethernet Private Line </li></ul></ul><ul><ul><li>Ethernet Virtual Private Line </li></ul></ul><ul><li>E-LAN Services </li></ul><ul><ul><li>Multipoint Services </li></ul></ul><ul><li>E-Tree Services </li></ul><ul><li>Service Attributes </li></ul><ul><ul><li>Service Parameters </li></ul></ul><ul><ul><li>Bandwidth Profiles </li></ul></ul><ul><ul><li>Traffic Management </li></ul></ul><ul><li>Circuit Emulation Services </li></ul><ul><li>Carrier Ethernet Architecture for Cable </li></ul><ul><li>Carrier Ethernet in Access Networks </li></ul><ul><li>MEF Specifications </li></ul><ul><li>Service Examples </li></ul>March 2007
  4. 4. Carrier Ethernet Defined Carrier Ethernet for the Business Users: <ul><li>The MEF has defined Carrier Ethernet as </li></ul><ul><li>A ubiquitous, standardized, carrier-class Service and Network defined by five attributes that distinguish it from familiar LAN based Ethernet   </li></ul>
  5. 5. Carrier Ethernet Defined <ul><li>A set of certified network elements that connect to transport Carrier Ethernet services for all users, locally & worldwide </li></ul><ul><li>Carrier Ethernet services are carried over physical Ethernet networks and other legacy transport technologies </li></ul>Carrier Ethernet for Service Providers:
  6. 6. What is Carrier Ethernet? <ul><li>Question: </li></ul><ul><ul><li>“ Is it a service, a network, or a technology? ” </li></ul></ul><ul><li>Answer for an end-user </li></ul><ul><ul><li>It’s a Service defined by 5 attributes </li></ul></ul><ul><li>Answer for a service provider </li></ul><ul><ul><li>It’s a set of certified network elements that connect to transport the services offered to the customer </li></ul></ul><ul><ul><li>It’s a platform for value added services </li></ul></ul><ul><ul><li>A standardized service for all users </li></ul></ul>
  7. 7. Carrier Ethernet Terminology <ul><li>UNI Type I </li></ul><ul><ul><li>A UNI compliant with MEF 13 </li></ul></ul><ul><ul><li>Manually Configurable </li></ul></ul><ul><li>UNI Type II </li></ul><ul><ul><li>Automatically Configurable via E-LMI </li></ul></ul><ul><ul><li>Manageable via OAM </li></ul></ul><ul><li>Network to Network Interface (NNI) </li></ul><ul><ul><li>Network to Network Interface between distinct MEN operated by one or more carriers </li></ul></ul><ul><ul><li>An active project of the MEF </li></ul></ul><ul><li>Metro Ethernet Network (MEN) </li></ul><ul><ul><li>An Ethernet transport network connecting user end-points (Expanded to Access and Global networks in addition to the original Metro Network meaning) </li></ul></ul>
  8. 8. MEF Carrier Ethernet Terminology <ul><li>The User Network Interface (UNI) </li></ul><ul><ul><li>The UNI is the physical interface or port that is the demarcation between the customer and the service provider/Cable Operator/Carrier/MSO </li></ul></ul><ul><ul><li>The UNI is always provided by the Service Provider </li></ul></ul><ul><ul><li>The UNI in a Carrier Ethernet Network is a physical Ethernet Interface at operating speeds 10Mbs, 100Mbps, 1Gbps or 10Gbps </li></ul></ul>Carrier Ethernet Network UNI CE : Customer Equipment, UNI: User Network Interface. MEF certified Carrier Ethernet products CE
  9. 9. MEF Carrier Ethernet Terminology <ul><li>Ethernet Virtual Connection (EVC) </li></ul><ul><ul><li>Service container </li></ul></ul><ul><ul><li>Connects two or more subscriber sites (UNI’s) </li></ul></ul><ul><ul><li>An association of two or more UNIs </li></ul></ul><ul><ul><li>Prevents data transfer between sites that are not part of the same EVC </li></ul></ul><ul><ul><li>Two types of EVCs </li></ul></ul><ul><ul><ul><li>Point-to-Point </li></ul></ul></ul><ul><ul><ul><li>Multipoint-to-Multipoint </li></ul></ul></ul><ul><ul><ul><li>Rooted Multipoint </li></ul></ul></ul><ul><ul><li>Can be bundled or multiplexed on the same UNI </li></ul></ul><ul><ul><li>Defined in MEF 10.1 technical specification </li></ul></ul>
  10. 10. Carrier Ethernet: Two Service Types Using EVCs <ul><li>E-Line Service used to create </li></ul><ul><ul><li>Ethernet Private Lines </li></ul></ul><ul><ul><li>Virtual Private Lines </li></ul></ul><ul><ul><li>Ethernet Internet Access </li></ul></ul><ul><li>E-LAN Service used to create </li></ul><ul><ul><li>Multipoint L2 VPNs </li></ul></ul><ul><ul><li>Transparent LAN Service </li></ul></ul><ul><ul><li>Foundation for IPTV and Multicast networks etc. </li></ul></ul>E-Line Service type E-LAN Service type Point-to-Point EVC Carrier Ethernet Network UNI: User Network Interface, CE: Customer Equipment CE UNI UNI CE Multipoint-to-Multipoint EVC Carrier Ethernet Network CE UNI MEF certified Carrier Ethernet products CE UNI
  11. 11. EVCs and Services <ul><ul><li>In a Carrier Ethernet network, data is transported across Point-to-Point and Multipoint-to-Multipoint EVCs according to the attributes and definitions of the E-Line and E-LAN services </li></ul></ul>Point-to-Point EVC Carrier Ethernet Network UNI UNI
  12. 12. Services Using E-Line Service Type <ul><li>Ethernet Private Line (EPL) </li></ul><ul><ul><li>Replaces a TDM Private line </li></ul></ul><ul><ul><li>Dedicated UNIs for Point-to-Point connections </li></ul></ul><ul><ul><li>Single Ethernet Virtual Connection (EVC) per UNI </li></ul></ul><ul><ul><li>The most popular Ethernet service due to its simplicity </li></ul></ul>Point-to-Point EVC Carrier Ethernet Network CE UNI CE UNI CE UNI ISP POP UNI Storage Service Provider Internet
  13. 13. Services Using E-Line Service Type <ul><li>Ethernet Virtual Private Line (EVPL) </li></ul><ul><ul><li>Replaces Frame Relay or ATM services </li></ul></ul><ul><ul><li>Supports Service Multiplexed UNI (i.e. multiple EVCs per UNI) </li></ul></ul><ul><ul><li>Allows single physical connection (UNI) to customer premise equipment for multiple virtual connections </li></ul></ul>UNI Carrier Ethernet Network CE UNI CE UNI Point-to-Point EVC CE ISP POP Internet Service Multiplexed Ethernet UNI CE
  14. 14. Services Using E-LAN Service Type <ul><li>Ethernet Private LAN and Ethernet Virtual Private LAN Services </li></ul><ul><ul><li>Supports dedicated or service-multiplexed UNIs </li></ul></ul><ul><ul><li>Supports transparent LAN services and multipoint Layer 2 VPNs </li></ul></ul>Service Multiplexed Ethernet UNI Point-to-Multipoint EVC Carrier Ethernet Network CE UNI UNI UNI CE UNI CE
  15. 15. MEF 6.1 Ethernet Services Definitions Phase 2 <ul><li>MEF 6.1 Enhancements </li></ul><ul><li>Defines a new service type (E-Tree) in addition to those defined in MEF 6 </li></ul><ul><li>Adds four new services – two each to E-LAN and E-Tree </li></ul>No change Modified New Ethernet Private Line (EPL) Ethernet Virtual Private Tree (EVP-Tree) Ethernet Private Tree (EP-Tree) E-Tree (rooted multipoint EVC) Ethernet Virtual Private LAN (EVP-LAN) Ethernet Private LAN (EP-LAN) E-LAN (multipoint-to-multipoint EVC) Ethernet Virtual Private Line (EVPL) E-Line (Point-to-Point EVC) VLAN-Based (Service Multiplexed) Port-Based (All-to-One Bundling) Service Type
  16. 16. Services Using E-Tree Service Type <ul><li>Ethernet Private Tree (EP-Tree) and Ethernet Virtual Private Tree (EVP-Tree) Services </li></ul><ul><ul><li>Provides traffic separation between users with traffic from one “leaf” being allowed to arrive at one of more “Roots” but never being transmitted to other “leaves” </li></ul></ul><ul><ul><li>Targeted at multi-host and where user traffic must be kept invisible to other users </li></ul></ul><ul><ul><li>Anticipated to be an enabler for mobile backhaul and triple-play infrastructure rather than end-user SLAs </li></ul></ul>Root Carrier Ethernet Network CE UNI UNI UNI CE UNI CE Leaf Leaf UNI CE Leaf See examples at the end of presentation. E-Tree is referenced in MEF 10.1 as Rooted-Multipoint EVC.
  17. 17. Carrier Ethernet Architecture (1) Data Plane Control Plane Management Plane APP Layer ETH Layer TRAN Layer Data moves from UNI to UNI across &quot;the network&quot; with a layered architecture.                                                                       When traffic moves between ETH domains is does so at the TRAN layer. This allows Carrier Ethernet traffic to be agnostic to the networks that it traverses. Transport Services Layer (e.g., IEEE 802.1, SONET/SDH, MPLS) Ethernet Services Layer (Ethernet Service PDU) Application Services Layer (e.g., IP, MPLS, PDH, etc.)
  18. 18. Carrier Ethernet Architecture (2) Ethernet Services Layer Terminology Service Provider 1 Carrier Ethernet Network CE UNI MEF certified Carrier Ethernet products Ethernet Services “Eth” Layer Subscriber Site ETH UNI-C ETH UNI-N ETH UNI-N ETH E-NNI ETH UNI-C UNI: User Network Interface, UNI-C: UNI-customer side, UNI-N network side NNI: Network to Network Interface, E-NNI: External NNI; I-NNI Internal NNI CE: Customer Equipment UNI CE I-NNI E-NNI Service Provider 2 I-NNI ETH E-NNI Subscriber Site
  19. 19. Service Parameters <ul><li>EVC Service Attributes </li></ul><ul><ul><li>Details regarding the EVC including </li></ul></ul><ul><ul><li>Bandwidth profiles, QoS Assignment and Tagging options </li></ul></ul><ul><ul><li>Latency, Delay Variation (Jitter), Frame-loss </li></ul></ul><ul><li>Bandwidth Profiles </li></ul><ul><ul><li>Committed Information Rate </li></ul></ul><ul><ul><li>Excess Information Rate </li></ul></ul><ul><ul><li>Rate Enforcement - Shaping and Policing </li></ul></ul><ul><ul><li>Burst size (window) </li></ul></ul>
  20. 20. CIR and EIR Bandwidth Profiles <ul><li>BW profiles per EVC </li></ul><ul><ul><li>CIR – Committed Information Rate </li></ul></ul><ul><ul><ul><li>Frame delivery obligation per SLA </li></ul></ul></ul><ul><ul><li>EIR – Excess Information Rate </li></ul></ul><ul><ul><ul><li>Excess frame delivery allowed – not subject to SLA if available </li></ul></ul></ul><ul><ul><li>CBS, EBS - size of burst window (ms) for allowed CIR / EIR rates </li></ul></ul>Total UNI BW <ul><li>2 rate, 3 Color marking </li></ul><ul><ul><li>Marking typically done at ingress </li></ul></ul><ul><ul><ul><li>Green – Forwarded frames – CIR conforming traffic </li></ul></ul></ul><ul><ul><ul><li>Yellow – Discard Eligible frames – Over CIR , within EIR </li></ul></ul></ul><ul><ul><ul><li>Red – Discarded frames – Exceeds EIR </li></ul></ul></ul>EVC1 CIR EIR EVC2 CIR EIR EVC3 CIR EIR
  21. 21. UNI EVC 1 EVC 2 EVC 3 Ingress Bandwidth Profile Per Ingress UNI UNI EVC 1 EVC 2 EVC 3 Ingress Bandwidth Profile Per EVC 1 Ingress Bandwidth Profile Per EVC 2 Ingress Bandwidth Profile Per EVC 3 UNI EVC 1 CE-VLAN CoS 6 Ingress Bandwidth Profile Per CoS ID 6 CE-VLAN CoS 4 CE-VLAN CoS 2 Ingress Bandwidth Profile Per CoS ID 4 Ingress Bandwidth Profile Per CoS ID 2 EVC 2 Port-based Port/VLAN-based Port/VLAN/CoS-based MEF 10.1 Traffic Management Model
  22. 22. Carrier Ethernet Scope and Reach Bringing vastly extended scalability for business and residential users Voice Gateway Voice/Video Telephony HD TV TVoD, VoD Gaming, Business Backup, ERP Residential Triple-Play Broadband mobile data/video Video Source Video Source Small/Medium Business Internet FTTx and DSLAM , Cable Modem COPPER, FIBER, COAX and WIRELESS E-Line and E-LAN service Wireless Backhaul
  23. 23. Circuit Emulation Services over Carrier Ethernet <ul><li>Enables TDM Services to be transported across Carrier Ethernet network, re-creating the TDM circuit at the far end </li></ul><ul><ul><li>Runs on a standard Ethernet Line Service (E-Line) </li></ul></ul>TDM Circuits (e.g. T1/E1 Lines) Carrier Ethernet Network TDM Circuits (e.g. T1/E1 Lines) Circuit Emulated TDM Traffic
  24. 24. Carrier Ethernet Architecture for Cable Operators Headend Hub EQAM CMTS Optical Metro Ring Network Video Server D2A Ad Insertion E-LAN E-Line Business Services over Fiber (GigE) Voice gateway Voice/Video Telephony Digital TV, VOD, Interactive TV, Gaming Managed Business Applications Internet Access Analog TV Feeds A2D Hub UNI CE E-NNI Another MSO or carrier Network EoDOCSIS (future) EoT1/DS3 PON Greenfield Residential & Business Services EoSONET /SDH CE UNI WDM UNI Home Run Fiber EoCoax EoHFC Switched Fiber Business Park Business Services Node E-Line E-LAN CE UNI CE Wireless Plant Extension Leased T1/DS3 CE UNI
  25. 25. Related MEF Services Specifications Purpose Defines the Ethernet Services (EPL, EVPL, E-Line, ELAN, and E-Tree) MEF 6.1 Purpose Defines 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 10.1 Metro Ethernet Services Definitions Phase II
  26. 26. Example Uses of Services
  27. 27. Examples for EPL HQ Branch Branch EPL EPL <ul><li>Simple configuration </li></ul><ul><ul><li>“ The port to the Internet it is un-trusted” </li></ul></ul><ul><ul><li>“ The port to the branches it is trusted” </li></ul></ul><ul><ul><li>No coordination with MEN SP for HQ to branch subnets </li></ul></ul><ul><li>Fractional bandwidth (Bandwidth Profile) to minimize monthly service charges </li></ul>Internet Firewall
  28. 28. Example Use EVPL ISP Customer 1 Turbo 2000 Internet Access, Inc. ISP Customer 2 ISP Customer 3 Service Multiplexing VLAN 2000  Blue VLAN 2000  Yellow VLAN 2000  Green VLAN 178  Blue VLAN 179  Yellow VLAN 180  Green <ul><li>Efficient use of ISP router ports </li></ul><ul><li>Easy configuration at ISP customer sites </li></ul><ul><ul><li>This port and VLAN 2000 (or even untagged) to Turbo Internet </li></ul></ul>
  29. 29. Example Use of EVP-LAN Deadbeat Detect Credit Check, Inc. Instant Cash Loans, Inc. Walk In Drive Out Used Cars, Inc. <ul><li>Redundant points of access for critical availability higher layer service </li></ul><ul><li>Efficient use of DDC’s router ports </li></ul><ul><li>ICL and WIDO Used Cars cannot see each other’s traffic </li></ul>Service Multiplexing A B D EVC 1 C EVC 2
  30. 30. Example Use of EP-Tree A B C D EVC 1 Internet for the Small Guy, Inc. Small Guy Travel Root Leaves Diminutive Guy Gaming Center Tiny Guy Coffee <ul><li>Efficient use of ISG router port </li></ul><ul><li>One subnet to configure on ISG router </li></ul><ul><li>Simple configuration for the little guys </li></ul><ul><li>Small, Tiny, and Diminutive Guys can’t see each other’s traffic </li></ul><ul><li>Second Root would provide redundant internet access </li></ul><ul><li>Some limits on what routing protocols can be used </li></ul>
  31. 31. Example Use of EVP-Tree A B C D EVC 1 Internet for the Small Guy, Inc. Small Guy Travel Roots Leaves Diminutive Guy Gaming Center Tiny Guy Coffee <ul><li>Efficient use of ISG router port </li></ul><ul><li>Efficient distribution of elevator video </li></ul><ul><li>Small, Tiny, and Diminutive Guys can’t see each other’s traffic, EV Franchises can’t see each other’s traffic </li></ul><ul><li>Second Root would provide redundant internet access </li></ul><ul><li>Some limits on what routing protocols can be used </li></ul>Elevator Video Franchises Leaves Service Multiplexing
  32. 32. More at