High Speed Internet Access Developments And VPNs “Building Profitable Internet Access Networks”

High Speed Internet Access Developments

And VPNs

“Building Profitable Internet Access Networks”

Sibel Serhan Ozcan

Internet Access

Alcatel Telecom

13-15/11/1998

4th Internet Conference, Istanbul/ Sibel Serhan Ozcan

2

Presentation overview

Drivers for broadband Internet Access:

Market growth

Network overload

Applications

Services

Internet business approaches for network operators

Data in Access Networks

ATM, frame and IP level concentration to enable transparent VPNs for both ISPs and corporate clients

13-15/11/1998


3

760820

875940

715

425351

275201

130

3575

120180

250

0

100

200

300

400

500

600

700

800

900

1000

1996 1997 1998 1999 2000

Millions

Subsc

ribers

Fixed: CAGR* = 7%

Mobile: CAGR* = 35%

Internet: CAGR* = 63%

*Constant Average Growth Ratio (CAGR) ‘96-2000

Internet boom

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4

1

2

3

PSTN/ISDN

Datanetwork

Internet

ISDNAnalog Modem

ISPPOP

Transitexchange

Localexchange

Localexchange

Localexchange

Localexchange

ISP: Internet Service ProviderPOP: Point Of Presence

Possible areasof congestion

Network congestion areas

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5

RAN network positioning

TelephoneNetwork

SAN

Data / InternetServiceProviders

CO

CO

CO

RAN : Remote Access NodeSAN : Subscriber Access NodeLE : Local ExchangeTE : Tandem/Trunk Exchange

PRA

PRARAN

RAN

xDSLModemBB RAN

DataBackbone

ISPRAN

LE

TE LE

13-15/11/1998


6

Summary service requirements

XXX: Crucial requirement XX: Very important requirementX: “Nice-to-have” requirement

Requirement For user For networkoperator

Differentiated Quality Of Service levels, e.g.:. low to medium cost residential services. high performance business services

XXX XXX

Virtual second line:. user: voice and data. operator: off-load POTS network

XXXXX

Low Cost XXX (residential) XX

Bandwidth capabilities (high speed) XX

Security X (business) XX

Multiple destinations X

“Always-On” IP connectivity X

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Internet applications

Current applications continue to grow:

Promotional / business sites

Academic and government users

Adult content

E-mail

Chat and interest groups

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8

Internet applications

New application drivers:

Always-on applications

Work-at-home

Entertainment

Voice over Internet

Video and audio streaming

Corporate users

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9

VDSL

ADSL

ISDN

PSTNAcc

ess

Tech

nolo

gy

Acc

ess

Tech

nolo

gy

Text Image Sound VideoApplication typesApplication types

E-m

ail,

ch

at

box

WW

W b

row

sin

gP

resen

tati

on

s

Tele

ph

on

y

Rad

ioToday Tomorrow

Applications versus access (speed) technology

VR

applic

ati

ons

CD

Lib

rary

Vid

eo c

onfe

renci

ng

LAN

-to-L

AN

VO

D,

film

lib

rary

Hig

h q

ualit

y v

ideo

Word

pro

cess

ing,

spre

adsh

eetsNew applications require New applications require

higher bandwidthhigher bandwidth

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10

Bandwidth requirements

Early bandwidth requirements for high speed users:

Downstream: 500 kbit/s - 1 Mbit/s

Upstream: 200 - 500 kbit/s

“10 times the performance, at twice the price”

High concentration factors

Once the service takes-off and revenues are there, this requirement will rapidly evolve

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Bandwidth requirementsExamples

Remote access to business: average presentation file size ‘95 ‘96 ‘97200 Kbyte 460 Kbyte 2 Mbyte

Internet access: typical Microsoft game is 10 Mbyte

Downloadtimes:

0

10

20

30

40

50

PSTN ISDN ADSL

Minutes

Pres entation

Game

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12

Some misunderstandings...

There exist no broadband services

Backbone network will never cope with ADSL speeds

Servers will never cope with ADSL speeds

Technology for high speed Internet is available today

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Nice to have >> Interested >> Very interested >> Fundamental need

Very high revenue per user

Very low revenue per user

Important revenues

Lowest chanceon high revenues

Highest total revenues

Important revenues

Positioning of applications / services from

Network Operators towards CustomersRevenue

operator

Customer needs

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Reven

ue p

er

user

for

op

era

tor

Residential user needs

Web surfing(e-mail, news,

WWW)

On-line registrationProfile / access mgt

New (higher speed) apps over IP(radio, home shopping, etc.)

PC to Phone/FaxBrowse & Talk

Phone-Phone over

IP - LD / LQ & LC

Filtering

Kiosk access

Telephony over POTS

Telephony over ISDN

Videotelephony

InteractiveVOD / IP

NotificationForwarding

QOS:port availability

bandwidth

Residential users services

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Reven

ue p

er

user

for

op

era

tor

Residential user needs

Residential users services Technology perspective

Web surfing(e-mail, news,

WWW)

On-line registrationProfile / access mgt

New (higher speed) apps over IP(radio, home shopping, etc.)

PC to Phone/FaxBrowse & Talk

Phone-Phone over

IP - LD / LQ & LC

Filtering

Kiosk access

Telephony over POTS

Telephony over ISDN

Videotelephony

InteractiveVOD / IP

NotificationForwarding

Now

Short Term (<1 year)

Medium Term (>1 year)

QOS:port availability

bandwidth

Services resulting fromServices resulting fromIN - TMN - SMC - RANIN - TMN - SMC - RAN

IP@ATMIP@ATMIP@ATMIP@ATMADSLADSL

VoIPVoIP

VPNVPN

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Filtering

Enterprises and Service Provider services

Reven

ue p

er

user

for

op

era

tor

Corporate and Service Provider needs

InvoicingQOS:

bandwidthaccess ports

Data Integrity& ConfidentialityHigh Speed

Access & Switching(E3/T3, STM-1)

Medium SpeedAccess & Switching

(T1/E1, n*64)

Kiosk Access& Invoicing

AAA Services AAA ProxyServices

Access Coverage:geographical distribution

access types

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Reven

ue p

er

user

for

op

era

tor

Corporate and Service Provider needs

Filtering

Enterprises and Service Provider services

Technology perspective

Invoicing

QOS:bandwidth

access ports

Data Integrity& ConfidentialityHigh Speed

Access & Switching(E3/T3, STM-1)

Medium SpeedAccess & Switching

(T1/E1, n*64)

Kiosk Access& Invoicing

AAA Services AAA ProxyServices

Access Coverage:geographical distribution

access typesNow

Short Term (<1 year)

Medium Term (>1 year)

VPNVPN

IP@ATMIP@ATM

xDSLxDSLATMATMISDNISDNGPRSGPRSCableCableModemModem

IP@ATMIP@ATMxDSLxDSL

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Impact on the telco network

Studies on current telco networks warn for potential congestion

Main reason: long holding times of Internet calls

Today, already in countries without timed telephone billing for local calls (US, Australia, etc.)

Tomorrow, all over the world?

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Market growth

Network overload

Applications

Services




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POP:-Remote Access-AAA gateway

POP:-Remote Access-Routing-Mail/News/...-AAA

POPPOP

Residentials

Data Networks(FR, ATM, IP)

ContentProviders

ISP / OSP(AOL, Compuserve, T-On-

Line, WANADOO, Havas-On-Line)

GSTN(PSTN, ISDN,

Mobile)

Transport(SDH,PDH)

TELCO(Incumbent, New Operators)

SOHOs

USERSIAP

NetworkAccessPoint(NAP)

Access(Wireline, Wireless,

ADSL, WW)InternetToday

InternetTomorrow

Professionals

The Internet spreads out

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Business case for Network Operator“Acting as ISP”

Main POPRemote Access

Network

RANs in distributed(remote) POPs

SMC

ExternalServers

To otherISPs

SMC: Service Management & Customer Care Centre

RAN: Remote Access Node

RouterData Backbone

RAN

RAN

ISP SMC: Authentication Authorization Accounting

RAN

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Business case for Network Operator“Concentrating traffic for ISP”

Data Backbone

IAP

RAN

RAN

Proxy SMCISPDial-inusers

RemoteAccess

Network

RANRANRouting

PROXY

ISP SMC:AuthenticationAuthorizationAccounting

Proxy SMC:Identify ISP destination SMCProtocol translation towards SMCIP pool managementRAN port managementISP accounting

ISPSMC

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Business case for Network Operator“Concentrating traffic for ISP”

Data Backbone

RAN

RAN

SMCISPDial-inusers

RemoteAccess

Network

ISPSMC

Data Backbone

SMC

RAN

ISP

To otherISP

RAN

RAN

PROXY

Tran

spar

ent

Pipe

RANRouting

Routing

ISP dial-in users

Local Telco SMC:Identify destination tunnelRAN port managementISP accountingISP SMC:

AuthenticationAuthorizationAccounting

IAP

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Extended ISP SMC:Full AAA functionsVPN capabilitywith remote control

Business case for Network Operator “Outsourcing for the corporate”Providing access to “Intranets”

CorporateIntranet

Applications

Data Backbone FW

Main Office

FW : Firewalls

Data Backbone

RAN

RAN RAN

HomeWorker

SOHO

FW

Remote Office

Remote VPN terminal:Access to VPN view ontelco SMC for AAA functions

IAP

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Market growth

Network overload

Applications

Services




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Data Networking explosion10% growth a month

L2/3 Data Network

PSTN, L2 data, ADSL ,GSM, ISDN, HFC, ..

Service Providers

End User

Access Provider

WW

ISP’s, corporates

Remote Access

modemRAN

What Access is for telephony...

Is Remote Access becoming for data networking

Access Access

End UserPublic Telecom OperatorAccess

Access

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Vision 2000

Internet is a disruptive technology:

compare to Mainframe -> Mini -> PC evolution

Data will become dominant:

no supplier or operator has won yet

large growth still allows everybody to succeed: “everybody is under attack and liable to loose”

however, those who do not follow the fundamental changes, will be out in 3-5 years from now (cfr. mainframe / mini suppliers)

? Speed at which data will take over, determines this industry transition

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L2L1

L3 IPIPIPIP

EthernetEthernetEthernetEthernetISDNISDNISDNISDNPSTNPSTNPSTNPSTN FRFRFRFRATMATMATMATMSDHSDHSDHSDH

Data oriented ApplicationsData oriented Applications

IP unifying layer for data oriented applications

IP as internetworking layerand interface to applications

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Drivers for the “data future”

Corporate users drive the market: IT applications --> on Internet platforms also non-data-telecom apps (fax, voice) --> data environment

major impact on 50% of international voice traffic business telephony --> data (Internet) based to:

integrate services: application sharing save cost: currently large arbitrage

Growth in the residential area will strengthen this

? Are (data) networks ready to cope with this?

high value markethigh value market

high volume markethigh volume market

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Evolve from

Switched environment OR Routed environment

towards

an integrated L2 / L3 network architecture:

“The new data-based architecture”

The “data future”

PSTN Switch

ADSL, WLLAccess

ISP

Corp

Users

Router with

integratedaccess

ISP

Corp

Users

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The new data-based architecture

L2/3 Data Network

PSTN, L2 data, ADSL ,GSM, ISDN, HFC, ..

Service Providers Access Provider

WW

ISP’s, corporates

Remote Access

modemRAN

Access

QOSHigh-SpeedL2/L3 Switch

L2 QOSAccess

L2/L3 VPNQOS Forwarding

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Why L3 needed?

L1/L2 technologies such as

ADSL access

FITL access

Wireless access

ISDN switching

ATM switching

…

have limited added value

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Why L3 needed?

L3 services such as

high speed Internet access to allow residential users to connect to their familiar ISP

virtual Intranets address individual enterprises with their corporate users

virtual Extranets address groups of enterprises

…

are easier to sell to end-customers andhave more value

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Why keeping L2 and L3 separated?

Build the most cost effective L2 access in every individual situation:

ISDN, WLL, ADSL, cable modem, satellite will all co-exist since all position the best in a certain environment

provide L2 QOS aware data concentration to optimize transmission cost

“simple functions” provide the most cost effective implementation

Guarantee very high availability, i.e. stability is prime: “once it works, don’t touch”

no frequent upgrades

simple functions to have fewest possible problems

straightforward L2 system with QOS based data concentration

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Build a common L3 function manageable by one group / division who sells this to end-users (residential, business):

offer same, value added functions for all access mechanisms

high computational environment --> use adequate L2/L3 devices

provide reliability by duplication: hardware, system, etc.

continuous evolution of functions: regular upgrades

L3 differentiates the services of the operator

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Operator organizational aspects:

different access systems are served in different divisions

one division can supply the same L3 services to all customers, independent of (access and other) technologies used

operational management will be logically split:

L2 needs an extensive infrastructure provisioning management

L3 needs a business / service provisioning management

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L3 network L2 network

Remote Access networking modelATM (L2) connectivity

Service Providers

...

ANT

...ASAM

...mini-RAM

End UserAccess Provider

WW

WW

ISP’s

Corporates

AAA: Authentication, Authorization & Accounting

AAA server

RAN

ANT

...ASAM

...mini-RAM

ATM backbone

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L3 network L2 network

Remote Access networking modelATM (L2) connectivity

Service Providers

...

ANT

...ASAM

...mini-RAM


WW

WW

ISP’s

Corporates

AAA: Authentication, Authorization & Accounting

AAA server

RAN

ANT

...ASAM

...mini-RAM

ATM backbone

MAC, IPover ATM

PPP over ATM

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39L2/L3 network L2 network

Remote Access networking modelL2-L3 connectivity - Model A

DataNetwork

BB-RAN(DANA)

Service Providers

...

ANT

...ASAM

...mini-RAM


WW

WW

VC-pipes

IP-tunnelsCorporates

ServiceManagementAAA server

RAN

ISP’s

ATMNetwork

Proxy

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Remote Access networking modelL2-L3 connectivity - Model A

DataNetwork

BB-RAN(DANA)

Service Providers

...

ANT

...ASAM

...mini-RAM


WW

WW

VC-pipes



RAN

Network Adaptation

Line TransmissionEquipment Integration

Session handling

VPN basedconcentration

Service Authenticationand Authorization

Accounting

Network Adaptation

Data handling

Network Adaptation

ISP’s

ATMNetwork

Proxy

MAC, PPP, IPover ATM

IP overdata

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Remote Access networking modelL2-L3 connectivity - Model B

DataNetwork

BB-RAN(DANA)

Service Providers

...

ANT

...ASAM

...mini-RAM


WW

WW

VC-pipes


ServiceManagement

AAAserver RAN

Network Adaptation

Line TransmissionEquipment Integration

Session handling

VPN basedconcentration

Network Adaptation

Session handling

Service Authenticationand Authorization

Accounting

Network Adaptation

ISP’s

ATMNetwork

PPPover ATM

PPP throughtunnel

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L2-L3 networking modelHeterogeneous access networks

DataNetwork

L2 network

BB-RAN(DANA)

Service Providers

...

ANT

...ASAM

...mini-RAM


WW

WW

VC-pipes



RAN PSTN/ISDN

PSTN(modem)

LEX(ISDN)

RAN

Cable modem

WirelessMSAN

L2/L3 network

ISP’s

AAAserver

DataNetwork

One single interfaceindependently of all

access technologies served

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L2-L3 networking model VPN logical connectivity

Virtual Private Networking (VPN) allows to build separated logical networks optimized to individual customer groups

serve many customer groups on one physical network

resell physical infrastructure to many customer groups

The L2-L3 VPN network allows the operator to implement for the different VPN customers: different QOS levels between and within the logical network individualized IP routing: e.g. to allow overlapping proprietary routing addresses private Ethernet (bridged) networks users, services and tariffs per customer group different accounting per customer group

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L2-L3 networking modelVPN logical connectivity

L2 network

BB-RAN(DANA)

Service Providers

...

ANT

...ASAM

...mini-RAM


WW

WW

VC-pipesIP-tunnelsCorporates


RAN PSTN/ISDN

PSTN(RAN)

Cable modem

WirelessMSAN

LEX(ISDN)

L2/L3 network

DataNetwork

ISP’s

AAAserver

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Remote Access L2-L3 networking model

SummaryThe L2-L3 network model offers key advantages:

a widely acceptable business model providing equal access for all parties --> win-win for all, i.e. network operator, ISP, enterprises

a low-cost network through easy provisioning and scalability: cost effective long-term operations --> “zero provisioning objective” Internet access solution

a differentiated solution:

QOS Service levels: key to differentiation

VPN services: key to profitability

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Convert technologies into services:

The New Internetworking Coms Environment

BB RAN

VoiceGway

Service Mgt.

Gatekeep

er

Remote PSTN access (modem, ISDN, V.110)

Enhanced access:ADSL, FC,

WLL, Satellite, ...

High-speed Internetaccess services

Remote accessservices

Voice

VoIPservices

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Market growth

Network overload

Applications

Services




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PDH, SDH Network

Access Network

xDSL Access Network

Mobile (GSM, GPRS) Network

PSTN, ISDNNetwork

Network architecture overviewand IP awareness

ISPs:Application

s (Mail, News, Web)

Caching

Intelligent

Network

Content Providers

Data NetworkX.25, FR, ATM

Enterprises

InternetAccessNetwor

k

IP Routed Network

AccessRouter

s

To datanetwork

NetworkAccessPoints (NAP)

TMN

Residential

Remoteworkers

Remoteoffices

IP awareness:Full >> Some >> None

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Universal Access POP

Mega RAS POP

Direct Access POP

ADSL POP

Cable Modem POP

Universal Access POP

NMC SMC

PDH / SDHNetwork

Core ATMBackbone Network

Core Data Network

Core IP Network

International Connections

PSTNISDNGSM

Fixed line & Data Network

ADSLAccess Network

CATV Access

Network

Main Office SP, CP

Residential

SOHO

Remote Office

Residential

SOHOUniversal Access

POPMega RAS POP

Direct Access POP

ADSL POP

Cable Modem POP

ISP services

NarrowbandNarrowbandaccessaccess

BroadbandBroadbandaccessaccess

DataDataroutingrouting

DataDataswitchingswitching

Data Data transporttransport

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Customer Care & Network Trouble Mgt.

Performance &Capacity

Management

The Management Environment

Networks

NetworkManagement

ServiceManagement

SNMPRadius

Other (ISP)Service

Management

User andService

Mgt.

Proxy

Mgt.VPNMgt.

Billing &Accountin

g.Network Element

Management

RAN Conf. &Fault Mgt.

Network

View

FaultCorrelatio

n

UmbrellaMgt.

Service

Pack.

NB - BBR A N

Money generationMoney generation Cost savingCost saving

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Service Management (1)

Service management: Centralized authentication, access control and billing server Radius service management protocol between RAN and Service Management Centre

Essential service management functions: User registration and management Service / application registration and management

(including access control of users to services) Service packaging and commercialization Billing and accounting management: counting IP traffic up to generating invoices

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Additional service management functions:

Help desk and hot-line support tools

Marketing support: marketing statisctics, reporting, actions

Network and service capacity planning

Directory and e-mail services interaction (self-registration, billing, etc.)

Service Management is the “money generator” for the operatorService Management is the “money generator” for the operator

Service Management (2)

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SM

CUser & Service Accounting SLA / VPN Accounting

VPN terminal NB/BB RAN NB/BB RAN NB/BB RAN (ISP operations) (IAP L3) (IAP L2)

RADIUS RADIUS or TACACs

OverviewSMC

VPN Access

User & Service Authorization:- services (IP filter)- service level (VC

management)

User Authentication

Policy Management

SLA reporting

IP pool management

Proxy AAA

Filter, translate

AAATunnel mgt.

Tunnel AAUser/Serv. AA

SLA management.:- port management

- VC / BW management

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NB RAN VPN terminal NB/BB RAN NB/BB RAN NB/BB RAN (ISP operations) (IAP L3) (IAP L2)

Q.931’ RADIUS RADIUS or TACACs

OverviewSMC with Signaling Gateway

SM

C

VPN Access

User & Service Accounting SLA / VPN Accounting

Policy Management

SLA reporting

Proxy AAA

Filter, translate

AAATunnel mgt.

Tunnel AAUser/Serv. AA

SS

7 S

ign

alin

g

Gate

way

PSTNSS7

SS7 toRAN Q.931Conversion

Local Apps SLA management.:

- port management- VC / BW

management

VPN portcontrol

User & Service Authorization:- services (IP filter)- service level (VC

management)

User Authentication

IP pool management

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Network Management

Network management: Centralized network management server Interfaces with RAN network elements via SNMP

Fully remote management including : RAN element configuration and fault management Network view and umbrella management Fault correlation of network and service alarms Network trouble management (fault follow-up) Performance management Capacity management

NMC minimizes operational costNMC minimizes operational cost

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New IPRevenues

More revenue fromexisting infrastructure

through IP

Cost effectiveIP implementation

Way to profitability in Internet networking

Conclusion

Service MgtService Mgt

ADSL MUXADSL MUX

IN/TMNIN/TMNBB-RANBB-RAN

Remote AccessRemote Access

NetworkNetworkMgtMgt

High Speed Internet Access Developments And VPNs “Building Profitable Internet Access Networks”

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Transcript of High Speed Internet Access Developments And VPNs “Building Profitable Internet Access Networks”