ethernet services overview

7/30/2019 Ethernet Services Overview

1/34

1

Carrier Ethernet Services Overview

August 2008


2/34

2

Purpose

Carrier Ethernet Services Overview

This presentation defines the MEF Ethernet

Services that represent the principal attribute of aCarrier Ethernet Network

This presentation is intended to give a simple

overview as a grounding for all other MEF

documents


3/34

3

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

Service Examples

March 2007


4/34

4

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 familiarLAN based Ethernet


5/34

5

Carrier Ethernet Defined

A set of certified network elements that connectto transport Carrier Ethernet services for all

users, locally & worldwide Carrier Ethernet services are carried over

physical Ethernet networks andother legacy transport

technologies

Carrier Ethernet for Service Providers:


6/34

6

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 thatconnect to transport the services offered to the

customer Its a platform for value added services

A standardized service for all users


7/347

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 byone 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 theoriginal Metro Network meaning)


8/348

Carrier EthernetNetwork

UNI

MEF Carrier Ethernet Terminology

The User Network Interface (UNI)

The UNI is the physical interface or port that is thedemarcation 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

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

CE


9/349

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 notpart 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


10/3410

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


11/3411

Carrier Ethernet Service Types (1 of 3): E-Line

E-Line Service used to create

Ethernet Private Lines

Virtual Private Lines

Ethernet Internet AccessE-Line Service type

Point-to-Point EVC

Carrier Ethernet

Network

UNI: User Network Interface, CE: Customer Equipment

CE

UNI UNI

CE

MEF certified Carrier Ethernet products


12/3412

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

UNI: User Network Interface, CE: Customer Equipment

Multipoint-to-Multipoint EVC


CE

UNI

MEF certified Carrier Ethernet products

CE

UNI


13/3413

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 RootUNI(s) but never being forwarded

to other Leaf UNIs

Root

CEUNI

UNI

UNI

CE

CE

Leaf

Leaf

UNI

CE

Leaf

Rooted Multipoint EVC


14/3414

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

Point-to-Point EVC

Carrier EthernetNetworkCE UNI

CE

UNI

CE

UNI

ISP

POP

UNI

Storage Service

Provider

Internet


15/3415

UNI

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 customerpremise equipment for multiple virtual connections

Carrier Ethernet Network

CEUNI

CE

UNI

Point-to-Point EVC

CE

ISP

POP

Internet

Service

Multiplexed

Ethernet UNI

CE


16/3416

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

Mulitipoint-to-Multipoint EVC

Carrier

EthernetNetwork

CE

UNI

UNI

UNI

CE

UNI

CE


17/3417

MEF 6.1 Ethernet Services Definitions Phase 2

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

Service Type

Port-Based

(All-to-One Bundling)

VLAN-Based

(Service Multiplexed)

E-Line

(Point-to-Point EVC)

Ethernet Private Line

(EPL)

Ethernet Virtual Private Line

(EVPL)

E-LAN

(multipoint-to-multipoint

EVC)

Ethernet Private LAN

(EP-LAN)

Ethernet Virtual Private LAN

(EVP-LAN)

E-Tree

(rooted multipoint EVC)

Ethernet Private Tree

(EP-Tree)

Ethernet Virtual Private Tree

(EVP-Tree)

No change Modified New


18/34

18

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 trafficfrom one leaf being allowed to arrive at one of moreRoots 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 ratherthan end-user SLAs

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.


19/34

19

Carrier Ethernet Architecture (1)

DataPl

ane

ControlPlane

ManagementPlane

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.)APP Layer

ETH Layer

TRAN Layer

Data moves from UNI to UNI across "the network" 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 networksthat it traverses.


20/34

20

Ethernet Services Layer Terminology

Carrier Ethernet Architecture (2)

Service Provider 1


CE

UNI

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


21/34

21

Service Parameters

EVC Service Attributes Details regarding the EVC including

Bandwidth profiles, QoS Assignment and Taggingoptions

Latency, Delay Variation (Jitter), Frame-loss

Bandwidth Profiles Committed Information Rate

Excess Information Rate

Rate Enforcement - Shaping and Policing

Burst size (window)


22/34

22

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

Total UNI BW

EVC1 EVC2

EVC3

EIR

2 rate, 3 Color marking

Marking typically done at ingress

Green Forwarded framesCIR conforming traffic

Yellow Discard Eligible framesOver CIR , within EIR

Red Discarded framesExceeds EIR


23/34

23

UNI

EVC1

EVC2

EVC3

Ingress BandwidthProfile Per Ingress UNI

UNI

EVC1

EVC2

EVC3

Ingress BandwidthProfile Per EVC1Ingress BandwidthProfile Per EVC2

Ingress Bandwidth

Profile Per EVC3

UNI EVC1

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

EVC2

Port-based Port/VLAN-based

Port/VLAN/CoS-based

MEF 10.1 Traffic Management Model


24/34

24

Carrier Ethernet Scope and Reach

Bringing vastly extended scalability for business and residential users

Wireless

Backhaul

VoiceGateway

Voice/VideoTelephony

HD TVTVoD, VoD

Gaming, BusinessBackup, ERP

Residential

Triple-Play

Broadband

mobile data/video

Video

Source

Video

Source

Small/Medium

Business

Internet

FTTx and DSLAM , Cable Modem

E-Line and

E-LAN service

Ci i E l i S i C i E h


25/34

25

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


26/34

26

Carrier Ethernet Architecture for Cable Operators

Headend Hub

EQAM

CMTS

Optical Metro Ring Network

Video

Server

D2A

Ad

Insertion

E-LAN

E-LineBusiness Services

over Fiber (GigE)

Voicegateway

Voice/VideoTelephony

Digital TV, VOD,Interactive TV,

Gaming

Managed BusinessApplications

Internet

AccessAnalog

TV Feeds

A2D

HubUNI

CE

E-NNI

Another MSO or carrier

Network

EoDOCSIS(future)

EoT1/DS3

PON

Greenfield Residential & Business Services

EoSONET/SDH

CEUNI

WDM

UNI

Home RunFiber

EoCoaxEoHFC

SwitchedFiber

BusinessPark

Business

Services

Node

E-LineE-LAN

CE

UNI

CE

Wireless

Plant

ExtensionLeased

T1/DS3

CEUNI

R l t d MEF S i S ifi ti


27/34

27

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 2MEF 10.1

Metro Ethernet Services Definitions Phase II


28/34

28

Example Uses of Services

E l f EPL


29/34

29

Examples for EPL

HQ

Branch

Branch

EPL

EPL

Simple configuration The port to the Internet

it is un-trusted

The port to the

branches it is trusted

No coordination withMEN SP for HQ to

branch subnets

Fractional bandwidth

(Bandwidth Profile) to

minimize monthly servicecharges

Internet

Firewall

E l U EVPL


30/34

30

Example Use EVPL

ISP

Customer 1

Turbo 2000

Internet Access, Inc.

ISP

Customer 2

ISPCustomer 3

Service Multiplexing

VLAN 2000 BlueVLAN 2000 Yellow

VLAN 2000 Green

VLAN 178 BlueVLAN 179 YellowVLAN 180 Green

Efficient use of ISP router ports

Easy configuration at ISP customer sites

This port and VLAN 2000 (or even untagged) to Turbo Internet

E l U f EVP LAN


31/34

31

Example Use of EVP-LAN

Credit Check, Inc.

Instant

Loans, Inc.

Walk In Drive OutUsed 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

Service Multiplexing

A

B

D

EVC1C

EVC2

E l U f EP T


32/34

32

Example Use of EP-Tree

A

B

C

D

EVC1

Internet for theSmall Guy, Inc.

Small Guy Travel

Root

Leaves

Diminutive Guy

Gaming Center

Tiny Guy Coffee

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

E l U f EVP T


33/34

33

Example Use of EVP-Tree

A

B

C

D

EVC1

Internet for the

Small Guy, Inc.

Small Guy Travel

RootsLeaves

Diminutive Guy

Gaming Center

Tiny Guy Coffee

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

Elevator Video Franchises

LeavesService Multiplexing


34/34

More atwww.MetroEthernetForum.org/presentations.htm

ethernet services overview

Documents