23th Oct 2006

Combining Ethernet and Circuit

Services

Combining Ethernet and Circuit

Services

presented atpresented at

2

OverviewOverview

• Ethernet transport is a key enabler for Ethernet (& IP) services– Uniquely meets most stringent service requirements– Improve service coverage and time to market– Accommodates today’s transport infrastructure and enables for

future migration

• Key applications in– Residential triple play backbones– Wireless access/backhaul– Data center networking– Resilient access to switched/routed data services networks

3

BackgroundBackground

Despite the availability of Ethernet metro and WAN services, many enterprises are still searching for solutions that fully

address their evolving requirements

To reduce operating and capital expenditures, many enterprises are considering consolidating their voice,

data, and video traffic onto a single converged, packet-based network

Revenues from traditional frame relay, ATM and TDM private line services delivered over separate network infrastructures continue to shrink, but will take a long

time to disappear

Co-existence of Ethernet and other services is a necessity !!

4

Carrier Challenges

Challenges for CarriersChallenges for Carriers

Carrier Ethernet solutions respond to carrier challenges

Carrier Ethernet Solution

Scalability(MACs, VLANs, Nodes)

Differentiated services on one network

Carrier-class

Service migration

EoMPLS

Hard QoS

Non-stop reliability

Service interworking

5

Multiple Services – Single NetworkMultiple Services – Single Network

Business CustomersRevenue

Business ServicesNetwork

Infrastructure

IP FR

ETH

Consumer ServicesNetwork

InfrastructureATM

DSL

Wireless

IP

TDM

Consumer Revenue

Multiple Services• Frame Relay• DSL Back Haul• Ethernet TLS VPNs• Internet Access• IP Sec & GRE VPNs

ATMEthernet

IP

IP VPNs

FR/ATM VPNs

Ethernet VPNs

MPLS Enables Convergence

IP/MPLS

NOTE: View this slide inpresentation mode.

6

Service InterworkingService Interworking

IP/MPLS Core

PE PE

– Service Interworking enables existing FR/ATM customers to communicate with new IP/Ethernet customers

– Service Interworking enables any customer to exchange data with any other, regardless of protocol

– Provides ATM-like hard QoS guarantees for IP and Ethernet services enabling customized per-customer/per-service SLAs

Layer 3 VPN (IP)

Ethernet

Layer 2 VPN(FR/ATM)

Layer 3 VPN (IP)

Ethernet

Layer 2 VPN(FR/ATM)

7

Service Interworking ExampleService Interworking Example

IP/MPLS Core

PE PE EthernetFR

ATM

LSP ALSP B

Service Interworking is a must to address current as well as new customers

Service Interworking is a key enabler Increases Addressable Market Lowers Capital Expenditures Increases Flexibility Seamless Integration for the Customer

FR

Bank A

Bank BBank A

Bank A

8

IP or IP/MPLS Backbone

ATM /Frame

Core

PSTN

Aggregation Access Customer Premises

Example End to End ServicesNetwork ArchitectureExample End to End ServicesNetwork Architecture

Point-to-Point Ethernet

Multipoint Ethernet

Gigabit Ethernet

EthernetAccess Ring

Internet Access

Off-net TDM AccessTDM over Ethernet

8815-2200

8815-5000

MPLS Metro

Access

NetworkCopper

Fiber

8813-46

8813-311v

8813-311

8813-311

8813-3118830

8830

8840

8813-4278830

8830

8830

8830

To N

ati

on

al or

Off

-Net

Cu

sto

mers

ATM

/FR

Inte

rwork

ing

- Internet Access - TLS- VPLS

Enabled Services

8813-311

- IPVPNs (2547bis)- Off-net TDM Access- TDM over Ethernet- VoIP and Video

Off

Net

Cust

om

ers

Internet

8860 IP Metro

9

Convergence TechnologiesConvergence Technologies

ATM

OC-48/-192

EoSMPLS

xPON

OC-3, OC-12

2G

Ref: "Crossing the Chasm" by Geoffrey A. Moore

MEth

WiMax

VoIP

IPTV

3G

ADSL

WiFi

FCoS

CES

Enh1588

CESSync

SynEth

Not Ethernet-based

Ethernet-based

Partially Ethernet-based

Sync over PSN

EoPDH

VDSL

Key:

T/E

FR

DoC

10

TDM Convergence TechnologiesTDM Convergence Technologies

Provider Side (typ.)

Eth PHY

Ethernet

VLAN (opt.)

MPLS (opt.)

UDP/IP (opt.)

RTP (opt.)

Adaptation

TDM SignalFraming and OHT

CES

T/E CarrierPHY

T/E CarrierFraming & OHT

VCAT & LCAS

GFP-F

EoPDH

Ethernet

SONET/SDHPHY

SONET/SDHFraming & OHT

VCAT & LCAS

GFP-T or GFP-F

EoS

Ethernet

Customer Side (type)

11

Sync-over-Packet Network ViewSync-over-Packet Network View

SONET/SDH

Network

MetroEthernetNetwork

ESS

RNC

Node B

xPON ONTCMTS

PRS

IP-D

SL

AM

SONET/SDHFDX, CC

GE, 10GEFDX, CC

GE, 10GEFDX, CC

GE, 10GEFDX, CC

GE, 10GEFDX, CC

xPONHDX, IC DOCSIS

HDX, CC sync

xDSLFDX, CC

WiMax

3G CC = Continuous CarrierIC = Intermittent Carrier

GE, 10GEFDX, CC

GE, 10GEFDX, CC

CESSync OCC

Sync IWF

IWF

LocalClock

Sync IWF

IWFCESSync

AFEClock

Sync IWF

IWFCESSync

OCC

Sync IWF

IWFCESSync GE, 10GE

FDX, CC

PRS

ESS

ES

S

ES

S

AD

M

Iub: FE, GEFDX, CC Base St

AD

M

ADM

ADM

12

Sync and Incumbent CarriersSync and Incumbent Carriers

Incumbent carriers will want...

– High-quality sync --> Potential differentiator (or maintain parity)

– Predictable, reliable, deterministic sync...not traffic-dependent

– Proven technology, low risk (conservative approach)

– Hierarchical clock distribution which derives from SONET/SDH

– Easy fit: Similar OSS & craft setup and management

– Always operate at the lowest feasible network level

• Reliability

• Quality

– Low incremental CapEx

Predictions:#1 Choice: CES Sync (Available now, but not "Layer 1," not forklift)#2 Choice: Synchronous Ethernet ("Layer 1," but not available now, and forklift)#3 Choice: IEEE 1588v2 ("Layer 2, and not available now, and forklift)Wildcard: Cheap GPS!

13

Carrier Ethernet Convergence Is HereCarrier Ethernet Convergence Is Here

Video Source

Internet

Voice gateway

Carrier Ethernet

Voice/Video

Telephony

HD TVTVoD, VoD

Video Source

GamingBusinessBackup,

ERP

Mobile3G Residential

Triple-Play

BusinessBroadband

E-Line, E-LAN,and TDM services

FTTx andDSLAM Backhaul

Broadbandmobile data/video

Traffic Engineering & QoS of ATM Resiliency & Manageability of SONET/SDH Simplicity & Economics of Ethernet

14

Broadband Services ApplicationsBroadband Services Applications

Residential

• Triple Play with IPTV

• 100’s of TV channels

• Video on demand

• Video recording/playback

• Interactive video apps

• Multi-megabit Internet access

• Remote learning

• Gaming

Business

• Enriched Services

• Gigabit connectivity between businesses

• Data Center Consolidation

• Storage and disaster recovery

• Guaranteed rate multi-megabit Internet access

• Video conferencing & broadcast

• Business telephony

Mobile

• Wireless Backhaul

• Wi-Fi Access delivery

• WiMAX infrastructure

• 3G and beyond wireless

• Next gen data services

• High resolution photo

• Wireless video

• Gaming

• Digital TV

15

Enterprise ServicesEnterprise Services

Inter-LAN, Inter-PABX and SAN

Customer site

Customer site

Customer site

Carrier Ethernet

Customer site

Customer site

Customer site

IP VPN

Network

Carrier Ethernet

Customer site

Customer site

www

Carrier Ethernet

Customer site

Customer site

Customer site

IP VPN

ASP, orExtranet

www

Customer site

Carrier Ethernet

Customer site

Customer site

Customer site

Carrier EthernetVPLS Group

High Speed Access to IP-VPN

High Speed Internet AccessVPLS or VPLS-TE Service

Multi-Service Access

16

Triple-Play ServicesTriple-Play Services

• Delivering triple play services over variety of access concentrators (DSLAM, OLT, Base stations) enables the operator to offer extensive and competitive Triple-Play services

• The Carrier-Ethernet aggregation network is a key factor to enable co-existence of new and legacy access network do deliver new and advanced services

RGW

AccessConcentrator

BB-SRRegionalNetwork

ASP

ISPMPLS/EthernetAggregation

Network

17

End-to-End Carrier Ethernet SolutionEnd-to-End Carrier Ethernet Solution

Carrier Ethernet with Traditional Ethernet Economics

BTS

18

Delivering Commercial Voice, Video and Data Services over Packet Switched NetworksDelivering Commercial Voice, Video and Data Services over Packet Switched Networks

Circuit Emulationwith compression

PSN w/Limited

B/W

PSTN

TDM Network(Class 5 Switch, PBX, SONET…)

Voice, Data & Video Pseudowire services over Metro & WAN

Circuit Emulation requires at least 1.7Mbps of bandwidth per T1

Compression ( with VAD, BOD, LBRC, HDLC flag & SS7 FISU/LISU suppression) reduces bandwidth consumption to under 100Kbps per T1

T1/E1,CT3/OC3

STM-1

Metro / WANCable/DSL

SatelliteLeased LinesFrame Relay

Internet

PSN w/Abundant

B/W

Circuit Emulation with orwithout compression

Metro / CampusFE/GbE

PBX

Circuit Emulation

PBXV.35/T1/E1/T3/E3

19

Headquarters

Connecting TDM-Based PBX’sOver FE/GBE or IP WANConnecting TDM-Based PBX’sOver FE/GBE or IP WAN

PSTN

PBX

Circuit Emulation with compression

Connect PBXs transparently over any packet switched network

Circuit Emulation is simple solution for campus/metro Ethernet

Add compression and echo cancellation for voice quality over IP WANs and low bandwidth networks (e.g. cable, DSL, Satellite and Internet)

School

PBX

FE/GbE

Circuit Emulationfor Campus orMetro Ethernet(School districts,

airports, etc.)

IP WAN

T1/E1

PBX

Remote Branch

T1/E1, Frame RelaySatellite, WirelessxDSL, Cable, PLC

Circuit Emulation with Compression for IP WANs

and low Bandwidth Access networks

Circuit Emulation

Circuit Emulation with or without compression

20

FE/GbE CarrierEthernet

Cellular Backhaul via PseudowiresCellular Backhaul via Pseudowires

FixedWireless Circuit

Emulation

FT1/T1/n*T1

Cell Site

FT1/T1/n*T1

Fiber

Switch Site

T1/E1,CT3/OC3

STM-1

Cell Site

• T1/E1 leased lines account for 40%-60% of mobile operators expenses

• Reduces 2G access costs and positions the mobile operator for future 3G network expansion

• Latency starts at under 3ms

• Clock complies with G.823/824 jitter and wander requirements

CircuitEmulation

Circuit emulationand cross-connect

FT1/T1/n*T1

Cell Site

Headend

Cable HFCInfrastructure

CircuitEmulation

Cell Site

FT1/T1/n*T1

21

Pseudowires vs. VOIPComplementing TechnologiesPseudowires vs. VOIPComplementing Technologies

VOIPCircuit

Emulation

Advanced multimedia features

Any-to-any voice/video switching & hunt groups

Protects investment in legacy equipment during migration to IP

Supports structured/unstructured T1/E1 & T3/E3

Transparent to payload

Accurate clock synchronization over IP/Ethernet/MPLS

Supports async/sync protocols over PSN (including ATM, Frame Relay, H.320 video, GSM, CDMA, encryption, etc.)

Minimum end-to-end latency (assuming G.711) 45ms 1ms

22

Private Line Services Private Line Services

• Private Line (‘legacy’) service revenue still growing

• Driving increased demand for circuit emulation

Total Private Line Revenue (US), 2005-2010 ($Millions) Insight Research Jan 2006

23

Circuit EmulationCircuit Emulation

VC-4

Carrier Ethernet

Multi-Service

SONET/SDH

STM-1/OC-3STS-1

CESoPSN

E1/T1

NxDS0

Emulated Circuits

SAToP• T1/E1/T3 • Clock & any data transport

CESoPSN• NxDS0 with or without CAS• Efficient fractional/aggregate NxDS0

CEP• Low order VC: VC-11/12/2/3• High order VC: VC-3/4/4-4c/etc• SDH ADM over packet

4x E1/T1 4x E1/T1

SAToP

CEP

24

CPEAccessMetro

Typical CES Topology Typical CES Topology

TDMBackhaul

PSN

SONET/SDH

Class 5 Switch

Class 5 Switch

Core

Carrier EthernetBackhaul

T1/E1/T3/STM-1/OC-3

Ethernet

Ethernet

nxT1/E1

nxT1/E1

25

World of StandardsWorld of Standards

CIRCUIT EMULATION

Standards Body Network CES Standard Notes & Standards Names

IETF IP SAToP; CESoPSN; CEP

PWE3

ITU General SAToP; CESoPSN Rec. Y.1413

Metro Ethernet Forum Carrier Ethernet SAToP; CESoPSN MEF-3; MEF-8

MPLS Forum MPLS SAToP; CESoPSN MFA 8.0.0

CableLabs DOCSIS BSoD

SYNCHRONIZATION OVER PACKET

Standards Body Standard Notes & Standards Names

IEEE IEEE 1588 v2 Sync over Packet

ITU G.8261 SG15

26

Ethernet Co-exists with other ServicesEthernet Co-exists with other Services

Hybrid L2 and L3 Ethernet

VPNs

FR Service Inter-working

ATM Service Inter-working

TDM over Ethernet

MPLS

CarrierEthernetCarrier

Ethernet

Accelerating Worldwide Adoption of Carrier-class Ethernet Networks and ServicesAccelerating Worldwide Adoption of Carrier-class Ethernet Networks and Services