Carrier Ethernet Services Overview

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Carrier Ethernet Services Overview
August 2008
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Purpose

• Carrier Ethernet Services Overview
• This presentation defines the MEF Ethernet
  Services that represent the principal attribute
  of a Carrier Ethernet Network
• This presentation is intended to give a simple
  overview as a grounding for all other MEF
  documents

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Agenda

• What is Carrier Ethernet?
• Carrier Ethernet Terminology
• The UNI, NNI, MEN.
• Ethernet Virtual Connections (EVCs)
• EVCs and Services
• E-Line Services
• Ethernet Private Line
• Ethernet Virtual Private Line
• E-LAN Services
• Multipoint Services
• E-Tree Services
• Service Attributes
• Service Parameters
• Bandwidth Profiles
• Traffic Management
• Circuit Emulation Services
• Carrier Ethernet Architecture for Cable
• Carrier Ethernet in Access Networks
• MEF Specifications

March 2007
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Carrier Ethernet Defined
Carrier Ethernet for the Business Users

• The MEF has defined Carrier Ethernet as
• A ubiquitous, standardized, carrier-class Service
  and Network defined by five attributes that
  distinguish it from familiar LAN based Ethernet
   

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Carrier Ethernet Defined
Carrier Ethernet for Service Providers

• A set of certified network elements that connect
  to transport Carrier Ethernet services for all
  users, locally worldwide
• Carrier Ethernet services are carried over
  physical Ethernet networks and other legacy
  transport technologies

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What is Carrier Ethernet?

• Question
• Is it a service, a network, or a technology?
• Answer for an end-user
• Its a Service defined by 5 attributes
• Answer for a service provider
• Its a set of certified network elements that
  connect to transport the services offered to the
  customer
• Its a platform for value added services
• A standardized service for all users

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Carrier Ethernet Terminology

• UNI Type I
• A UNI compliant with MEF 13
• Manually Configurable
• UNI Type II
• Automatically Configurable via E-LMI
• Manageable via OAM
• Network to Network Interface (NNI)
• Network to Network Interface between distinct MEN
  operated by one or more carriers
• An active project of the MEF
• Metro Ethernet Network (MEN)
• An Ethernet transport network connecting user
  end-points(Expanded to Access and Global
  networks in addition to the original Metro
  Network meaning)

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MEF Carrier Ethernet Terminology

• The User Network Interface (UNI)
• The UNI is the physical interface or port that
  is the demarcation between the customer and the
  service provider/Cable Operator/Carrier/MSO
• The UNI is always provided by the Service
  Provider
• The UNI in a Carrier Ethernet Network is a
  physical Ethernet Interface at operating speeds
  10Mbs, 100Mbps, 1Gbps or 10Gbps

Carrier Ethernet Network
UNI
CE
CE Customer Equipment, UNI User Network
Interface. MEF certified Carrier
Ethernet products
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MEF Carrier Ethernet Terminology

• Ethernet Virtual Connection (EVC)
• Service container
• Connects two or more subscriber sites (UNIs)
• An association of two or more UNIs
• Prevents data transfer between sites that are not
  part of the same EVC
• Three types of EVCs
• Point-to-Point
• Multipoint-to-Multipoint
• Rooted Multipoint
• Can be bundled or multiplexed on the same UNI
• Defined in MEF 10.1 technical specification

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EVCs and Services

• 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, E-LAN
  and E-Tree services

Point-to-Point EVC
UNI
UNI
Carrier Ethernet Network
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Carrier Ethernet Service Types (1 of 3) E-Line

• E-Line Service used to create
• Ethernet Private Lines
• Virtual Private Lines
• Ethernet Internet Access

E-Line Service type
Point-to-Point EVC
UNI
UNI
CE
CE
Carrier Ethernet Network
UNI User Network Interface, CE Customer
Equipment
MEF certified Carrier Ethernet products
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Carrier Ethernet Service Types (2 of 3) E-LAN

• E-LAN Service used to create
• Multipoint L2 VPNs
• Transparent LAN Service
• Foundation for IPTV and Multicast networks etc.

E-LAN Service type
CE
UNI
Carrier Ethernet Network
UNI
CE
Multipoint-to-Multipoint EVC
UNI User Network Interface, CE Customer
Equipment
MEF certified Carrier Ethernet products
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Carrier Ethernet Service Types (2 of 3) E-Tree

• Used for Applications requiring
  Point-to-Multipoint topology
• Video on demand, internet access, triple play
  backhaul, mobile cell site backhaul, franchising
  applications
• Provides traffic separation between Leaf UNIs
• Traffic from any leaf UNI can be sent/received
  to/from Root UNI(s) but never being forwarded
  to other Leaf UNIs

UNI
CE
Root
Leaf
Leaf
UNI
CE
Leaf
UNI
CE
UNI
Rooted Multipoint EVC
CE
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Services Using E-Line Service Type

• Ethernet Private Line (EPL)
• Replaces a TDM Private line
• Dedicated UNIs for Point-to-Point connections
• Single Ethernet Virtual Connection (EVC) per UNI
• The most popular Ethernet service due to its
  simplicity

Storage Service Provider
UNI
CE
Carrier Ethernet Network
UNI
ISP POP
CE
Internet
UNI
UNI
Point-to-Point EVC
CE
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Services Using E-Line Service Type

• Ethernet Virtual Private Line (EVPL)
• Replaces Frame Relay or ATM services
• Supports Service Multiplexed UNI (i.e. multiple
  EVCs per UNI)
• Allows single physical connection (UNI) to
  customer premise equipment for multiple virtual
  connections

Service Multiplexed Ethernet UNI
ISP POP
CE
UNI
UNI
Internet
Carrier Ethernet Network
CE
UNI
CE
Point-to-Point EVC
CE
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Services Using E-LAN Service Type

• Ethernet Private LAN (EP-LAN) and Ethernet
  Virtual Private LAN (EVP-LAN) Services
• Supports dedicated or service-multiplexed UNIs
• Supports transparent LAN services and multipoint
  Layer 2 VPNs

Service Multiplexed Ethernet UNI
UNI
UNI
CE
Carrier Ethernet Network
UNI
CE
UNI
CE
Mulitipoint-to-Multipoint EVC
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MEF 6.1 Ethernet Services Definitions Phase 2
No change
Modified
New

• MEF 6.1 Enhancements
• Defines a new service type (E-Tree) in addition
  to those defined in MEF 6
• Adds four new services two each to E-LAN and
  E-Tree

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Services Using E-Tree Service Type

• Ethernet Private Tree (EP-Tree) and Ethernet
  Virtual Private Tree (EVP-Tree) Services
• 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
• Targeted at multi-host and where user traffic
  must be kept invisible to other users
• Anticipated to be an enabler for mobile backhaul
  and triple-play infrastructure rather than
  end-user SLAs

Leaf
UNI
UNI
CE
Root
Leaf
UNI
UNI
Leaf
CE
CE
UNI
Carrier Ethernet Network
CE
See examples at the end of presentation. E-Tree
is referenced in MEF 10.1 as Rooted-Multipoint
EVC.
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Carrier Ethernet Architecture (1)
Data moves from UNI to UNI across "the network"
with a layered architecture.                      
                                                 W
hen 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.
Management Plane
APP Layer
Control Plane
Data Plane
ETH Layer
TRAN Layer
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Carrier Ethernet Architecture (2)
Ethernet Services Eth Layer
Carrier Ethernet Network
Service Provider 1
Service Provider 2
Subscriber Site
Subscriber Site
UNI
UNI
I-NNI
E-NNI
I-NNI
CE
CE
Ethernet Services Layer Terminology
ETH UNI-C
ETH UNI-N
ETH UNI-N
ETH E-NNI
ETH UNI-C
ETH E-NNI
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
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Service Parameters

• EVC Service Attributes
• Details regarding the EVC including
• Bandwidth profiles, QoS Assignment and Tagging
  options
• Latency, Delay Variation (Jitter), Frame-loss
• Bandwidth Profiles
• Committed Information Rate
• Excess Information Rate
• Rate Enforcement - Shaping and Policing
• Burst size (window)

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CIR and EIR Bandwidth Profiles

• BW profiles per EVC
• CIR Committed Information Rate
• Frame delivery obligation per SLA
• EIR Excess Information Rate
• Excess frame delivery allowed not subject to
  SLA if available
• CBS, EBS - size of burst window (ms) for allowed
  CIR / EIR rates

• 2 rate, 3 Color marking
• Marking typically done at ingress
• Green Forwarded frames CIR conforming traffic
• Yellow Discard Eligible frames Over CIR ,
  within EIR
• Red Discarded frames Exceeds EIR

Total UNI BW
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MEF 10.1 Traffic Management Model
Port-based
Port/VLAN-based
EVC1
EVC1
Ingress Bandwidth Profile Per EVC1
EVC2
EVC2
Ingress Bandwidth Profile Per Ingress UNI
UNI
Ingress Bandwidth Profile Per EVC2
UNI
EVC3
EVC3
Ingress Bandwidth Profile Per EVC3
CE-VLAN CoS 6
Port/VLAN/CoS-based
CE-VLAN CoS 4
Ingress Bandwidth Profile Per CoS ID 6
EVC1
CE-VLAN CoS 2
Ingress Bandwidth Profile Per CoS ID 4
UNI
Ingress Bandwidth Profile Per CoS ID 2
EVC2
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Carrier Ethernet Scope and Reach
Bringing vastly extended scalability for business
and residential users
HD TV TVoD, VoD
Gaming, Business Backup, ERP
Voice Gateway
Voice/Video Telephony
Internet
Video Source
Video Source
COPPER, FIBER, COAX and WIRELESS
Broadband mobile data/video
E-Line and E-LAN service
Residential Triple-Play
Small/Medium Business
FTTx and DSLAM , Cable Modem
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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 Network
TDM Circuits (e.g. T1/E1 Lines)
TDM Circuits (e.g. T1/E1 Lines)
Circuit Emulated TDM Traffic
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Carrier Ethernet Architecture for Cable Operators
Headend
Hub
Business Services over Fiber (GigE)
CE
E-Line
Internet Access
UNI
Home Run Fiber
Analog TV Feeds
E-LAN
D2A
Node
EoCoax EoHFC
Video Server
A2D
CE
EQAM
UNI
Ad Insertion
CMTS
Switched Fiber
Digital TV, VOD, Interactive TV, Gaming
Optical Metro Ring Network
Business Park Business Services
EoDOCSIS (future)
Managed Business Applications
UNI
E-NNI
Hub
EoSONET /SDH
Another MSO or carrier Network
Wireless Plant Extension
E-Line E-LAN
PON
Leased T1/DS3
Voice/Video Telephony
Voice gateway
WDM
CE
EoT1/DS3
CE
UNI
CE
UNI
Greenfield Residential Business Services
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Related MEF Services Specifications
MEF 6.1
Metro Ethernet Services Definitions Phase II
Purpose
Defines the Ethernet Services (EPL, EVPL,
E-Line, ELAN, and E-Tree)
Ethernet Services Attributes Phase 2
MEF 10.1
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.
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Example Uses of Services
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Examples for EPL

• Simple configuration
• The port to the Internet it is un-trusted
• The port to the branches it is trusted
• No coordination with MEN SP for HQ to branch
  subnets
• Fractional bandwidth (Bandwidth Profile) to
  minimize monthly service charges

Internet
Branch
EPL
EPL
Firewall
HQ
Branch
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Example Use EVPL
Turbo 2000Internet Access, Inc.
Service Multiplexing
VLAN 178 ? BlueVLAN 179 ? YellowVLAN 180 ? Green
VLAN 2000 ? Green
ISPCustomer 3
VLAN 2000 ? Blue
VLAN 2000 ? Yellow
ISPCustomer 1
ISPCustomer 2

• Efficient use of ISP router ports
• Easy configuration at ISP customer sites
• This port and VLAN 2000 (or even untagged) to
  Turbo Internet

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Example Use of EVP-LAN
Service Multiplexing
Instant Loans, Inc.
Credit Check, Inc.
Walk In Drive Out Used Cars, Inc.

• Redundant points of access for critical
  availability higher layer service
• Efficient use of DDCs router ports
• IL and Used Cars cannot see each others traffic

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Example Use of EP-Tree
A
Small Guy Travel
D
Internet for theSmall Guy, Inc.
B
Tiny Guy Coffee
EVC1
C
Diminutive GuyGaming Center
Root
Leaves

• Efficient use of ISG router port
• One subnet to configure on ISG router
• Simple configuration for the little guys
• Small, Tiny, and Diminutive Guys cant see each
  others traffic
• Second Root would provide redundant internet
  access
• Some limits on what routing protocols can be used

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Example Use of EVP-Tree
Elevator Video Franchises
Leaves
Service Multiplexing
A
Small Guy Travel
D
Internet for theSmall Guy, Inc.
B
Tiny Guy Coffee
EVC1
C
Diminutive GuyGaming Center
Roots
Leaves

• Efficient use of ISG router port
• Efficient distribution of elevator video
• Small, Tiny, and Diminutive Guys cant see each
  others traffic, EV Franchises cant see each
  others traffic
• Second Root would provide redundant internet
  access
• Some limits on what routing protocols can be used

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More at

• www.MetroEthernetForum.org/presentations.htm