Carrier Ethernet Services Standards for Mobile Backhaul

MEF Carrier Ethernet Services Standards for Mobile Backhaul Metro Ethernet Forum Update and Overview Peter Croy Harris Stratex Networks V5

Contents

MEF overview and membership update

MEF Mobile/Cellular Industry Focus

MEF Service Specs for Mobile Backhaul

MEF Technical Project for Mobile Backhaul

MEF Membership April 2007 (Part 1 of 2)

Accedian Networks

Actelis Networks

Adtran

Adva Optical Networking

Aethera Networks

Agilent Technologies

Aktino

Alcatel- Lucent

Altera

AMCC

ANDA Networks

ARRIS International

Atrica

Aurora Networks

Axerra Networks

Bay Microsystems

Broadcom

CableLabs

Calix

Canoga Perkins

Ceterus Networks

Ceragon Networks

Siemens

Spirent Communications

Strix Systems

Sunrise Telecom

Switchcore

T | Pack

Tejas Networks

Telco Systems

Telcordia Technologies

Tellabs

Telrad Networks

Terawave Communications

Transition Networks

Transmode Optical

Transwitch Corporation

Turin Networks

UNH-IOL

UTStarcom

Vyyo

World Wide Packets

Zarlink Semiconductor

ZTE Corporation

Zyxel Communications

Iskratel

Ixia

JDSU

Juniper Networks

Marvell Semiconductor

MRV Communications

Nakina Systems

Narad Networks

NEC

Neon Communications

Nortel Networks Corp.

Occam Networks

Omnitron Systems

OpVista

Overture Networks

PCT International

PMC-Sierra

RAD Data Communications

Redback Networks

Resolute Networks

Rivulet Communications

Safenet

Ciena Corporation

Cisco Systems

Corrigent Systems

Dallas Semiconductor /Maxim

Do Networks

EANTC

ECI Telecom

Ericsson

Ethos Networks

EXFO

Extreme Networks

Foundry Networks

Fujitsu Network Communications

Gridpoint Systems

Hammerhead Systems

Harris Stratex

Hatteras Networks

Huawei Technologies

IBM Internet Security Systems

Infovista

Iometrix

Ipitek

90 Equipment Vendors, Test Companies, Lab Members - 50% increase last year

MEF Membership April 2007 (Part 2 of 2)

Alpheus Communications

AT&T

Bell Canada

Bright House Networks

British Telecom

China Telecom

Cincinnati Bell

Colt

Comcast

Cox Communications

Embarq

FiberTower

France Telecom R&D LLC

Swisscom

Symphony Communication

Telecom Italia

Teliasonera AB

Telus

Time Warner Cable

T-Systems

Verizon Business

VSNL International

XO Communications

KDDI R&D Laboratories

Met-Net Communications

ntl: Telewest

NTT Advanced Technology

Optimum Lightpath

PCCW

PT Prime

Qwest Communications

RCN Business Solutions

Shanghai Information Network

33 Service Provider and Cable MSO Members - 40% increase last year Now 123 Members

Carrier Ethernet Defined

Carrier Ethernet is a ubiquitous, standardized, carrier-class SERVICE defined by five attributes that distinguish Carrier Ethernet from familiar LAN based Ethernet

It brings the compelling business benefit of the Ethernet cost model to achieve significant savings

Carrier Ethernet

Scalability

Standardized Services

Service Management

Quality of Service

Reliability

Carrier Ethernet Attributes Accelerate the worldwide adoption of carrier-class Ethernet networks and services MEF Mission: Service Management Reliability Standardized Services Quality of Service Scalability

MEF Mobile/Cellular Industry Focus

Group established in Vancouver in July 2006 as MEF Marketing initiative - ‘Mobile Backhaul Group’

Group goal:

Promote and define the use of Carrier Ethernet services for mobile/cellular backhaul networks and their evolution

Mobile/Cellular networks definition:

Legacy Cellular/GSM, CDMA2000, UMTS and WiMax802.16e.

Network cost pressures and new packet technologies provide an opportunity to evolve legacy PDH/SDH mobile backhaul networks using Carrier Ethernet services

Initiative has 20+ members from

Alcatel-Lucent, Aktino, Axerra, BellSouth, Ceterus, Cisco, Ericsson, Fibertower, Gridpoint Systems, Harris Stratex, Juniper, KDDI R&D, Nokia Siemens, Nortel, Resolute Networks, Tejas Networks (+ more)

MEF Service Specifications for Mobile Backhaul

Focused on evolution of RAN backhaul networks

Cost effective Ethernet transport solution for new low margin, high volume mobile data services

Carrier Ethernet as end-to-end transport service

Tailored transport service types and attributes

Evolution from legacy circuit-switched networks

Support network design and evolution targets

Flexibility and scalability are a must

Reliability and recovery mechanisms offer carrier-grade transport network performance

Simple management and service provisioning

Cost-effective network operations and maintenance

The UNI and the MEN Reference Model

UNI … User to Network Interface

Functionally the UNI is an asymmetric, compound functional element

Consists of a client side, referred to as the UNI-C, and a network side, referred to as the UNI-N

The term UNI is used to refer to these two functional elements, and generically, to the data, management and control plane functions associated with them.

Service Bandwidth Profiles defined in MEF 10

MEF 10.1 spec has three defined bandwidth profiles

Ingress Bandwidth Profile Per Ingress UNI

Ingress Bandwidth Profile Per EVC

Ingress Bandwidth Profile Per CoS ID

MEF 10.1 main bandwidth parameters <CIR, CBS, EIR, EBS>

CIR … Committed Information Rate - In Bits per second

CBS … Committed Burst Size - In Bytes per second

CIR/CBS determines guaranteed data frame delivery per service level objective and agreement

EIR … Excess Information Rate - In Bits per second

EBS … Excess Burst Size - In Bytes per second

EIR/EBS determines amount of data frame delivery allowed over and above of the committed bandwidth parameters

CIR vs. EIR service example

Conceptual Example

3 EVCs share fixed UNI bandwidth

3 CIRs can always be met

3 EIRs can not always be assured (simultaneously)

CIR EIR CIR EIR CIR EIR Total Bandwidth at UNI EVC1 EVC2 EVC3 Traffic Passed at CIR rates are subject to SLA conformance - if other parameters also met EIR traffic is marked yellow – not subject to SLA

Three Types of Bandwidth Profiles defined in MEF 10 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 1) At the UNI level 2) At the EVC level 3) At the CE-VLAN level

Bandwidth Profile

Parameters:

CIR

CBS

EIR

EBS

Performance

Attributes:

Delay

Delay Variation

Frame loss ratio

Availability

Ethernet Virtual Connection (EVC) defined …

An EVC is “an instance of an association of 2 or more UNIs”

EVCs help visualize the Ethernet connections

Like Frame Relay and ATM PVCs or SVCs

Cannot leak frame from one EVC to another

MEF has defined 3 EVC types

Point-to-Point - Multipoint-to-Multipoint

- Multipoint-to-Point

EVCs define the service connectivity MEN Multipoint-to-Multipoint EVC MEN … Metro Ethernet network domain UNI MEN UNI Point-to-Point EVC

Example Service using E-Line Service Types

Ethernet Private Line - EPL

Replaces a TDM Private line

Dedicated UNIs for Point-to-Point connections

One physical port per UNI

Single Ethernet Virtual Connection (EVC) per UNI

MEN Ethernet UNI Ethernet UNI Ethernet UNI Point-to-Point EVC CE Ethernet Private Line using E-Line Service type Internet ISP POP Storage SP Ethernet UNI CE CE CE CE MEN Ethernet UNI Ethernet UNI Service Multiplexed Ethernet UNI Multiple Point-to-Point EVCs CE Ethernet Virtual Private Line using E-Line Service type

Ethernet Virtual Private Line - EVPL

Replaces Frame Relay or ATM services

Supports Service Multiplexed UNI ( = Multiple EVCs per UNI and port)

Allows single physical connection to CPE for multiple virtual connections

UTRAN: Point-to-Point EVCs per Service Type

No EVC bundling/multiplexing

VLAN preservation disabled - Extra mapping efforts required

Operational and provisioning efforts - Scalability issues!

Mobile radio base station Mobile radio base station Mobile radio Network control

UTRAN: Rooted Multipoint EVC per Service Type

EVC bundling/multiplexing allowed

VLAN preservation enabled - Simple service mapping

Good QoS granularity

Scales better, simpler provisioning of services

Mobile radio base station Mobile radio base station Mobile radio Network control

WiMAX Forum: RAN Reference Architecture with MEN

BS … WiMAX radio base station

ASN-GW … Access Service Network Gateway

R6 … WiMAX system interface specification

MEN … Metro Ethernet network domain

Note: For clarity, WiMAX Forum term „BS“ is used for the CPE, although a vendor Base Station implementation may contain multiple ‚logical‘ BS.

BS RAN-CE R6 BS RAN-CE ASN-GW RAN-CE R6 ASN MEN UNI UNI UNI

MEF Mobile Backhaul Project

Mobile/Cellular RAN Network Use Cases

Technical Project Scope

Project Work Items and Deliverables

Mobile Backhaul Showcase Events

Split access with legacy IF towards MEN MEN Inter-working Function(s) Inter-working Function(s) UNI UNI Legacy Network Ethernet service(s) for data traffic Real-time and sync traffic (out of scope) RAN CE (RNC) RAN CE (RBS) Mobile I/F Mobile I/F MEN … Metro Ethernet network domain RBS … Radio base station RNC … Radio network controller Off-loading of mobile (data) traffic using Ethernet transport

Split access with native Ethernet towards MEN MEN Ethernet service(s) for data traffic Iub and Abis over legacy network (out of scope) Legacy Network UNI UNI RAN CE (RBS) RAN CE (RNC) MEN … Metro Ethernet network domain RBS … Radio base station RNC … Radio network controller Off-loading of mobile (data) traffic using Carrier Ethernet

Carrier Ethernet for all mobile traffic (long-term target) MEN RAN CE (RNC) RAN CE (RBS) Ethernet service(s) for data traffic Real-time and sync traffic UNI UNI MEN … Metro Ethernet network domain RBS … Radio base station RNC … Radio network controller All mobile backhaul traffic is using Carrier Ethernet transport

MEF Mobile Backhaul Project Scope

Project initiated in February 2007 by MEF technical committee vote

Focus on agreed mobile/cellular application use cases 1a, 1b, 2a and 2b

Identify the service performance attributes and how they are measured for GSM, WCDMA, CDMA2000, and WiMAX 802.16e and compare them to the current performance attributes defined in MEF 10.1