Transcript ISP - Inet-tr

High Speed Internet Access Developments And
VPNs
“Building Profitable Internet Access Networks”
Sibel Serhan Ozcan
Internet Access
Alcatel Telecom
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
4th Internet Conference, Istanbul/ Sibel Serhan Ozcan
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2
Internet boom
940
1000
875
900
Millions Subscribers
800
820
Fixed:
760
715
Mobile: CAGR* = 35%
700
Internet: CAGR* = 63%
600
500
425
351
400
275
300
200
100
CAGR* = 7%
201
130
35
75
250
180
120
0
1996
1997
1998
1999
2000
*Constant Average Growth Ratio (CAGR) ‘96-2000
4th Internet Conference, Istanbul/ Sibel Serhan Ozcan
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3
Network congestion areas
2
Transit
exchange
3
Local
exchange
ISDN
PSTN/ISDN
Local
exchange
Local
exchange
Local
exchange
Analog
Modem
ISP: Internet Service Provider
POP: Point Of Presence
4th Internet Conference, Istanbul/ Sibel Serhan Ozcan
1
Internet
Data
network
Possible areas
of congestion
13-15/11/1998
ISP
POP
4
RAN network positioning
ISP
RAN
Data / Internet
Data
Service
Providers
Backbone
RAN
CO
TE
PRA
LE
CO
PRA
Telephone
Network
RAN
SAN
LE
RAN
SAN
LE
TE
BB RAN
: Remote Access Node
: Subscriber Access Node
: Local Exchange
: Tandem/Trunk Exchange
4th Internet Conference, Istanbul/ Sibel Serhan Ozcan
xDSL
Modem
CO
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5
Summary service requirements
Requirement
Differentiated Quality Of Service levels, e.g.:
. low to medium cost residential services
. high performance business services
Virtual second line:
. user: voice and data
. operator: off-load POTS network
Low Cost
For user
For network
operator
XXX
XXX
XX
XXX
XXX (residential)
Bandwidth capabilities (high speed)
Security
XX
XX
X (business)
Multiple destinations
X
“ Always-On” IP connectivity
X
XX
XXX: Crucial requirement
XX: Very important requirement
X: “Nice-to-have” requirement
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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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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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PSTN
Text
Today
13-15/11/1998
High quality video
VOD, film library
LAN-to-LAN
Video conferencing
CD Library
Radio
Image
Sound
Application types
Tomorrow
4th Internet Conference, Istanbul/ Sibel Serhan Ozcan
Telephony
ISDN
VR applications
ADSL
WWW browsing
Presentations
VDSL
Wordprocessing, spreadsheets
New applications require
higher bandwidth
E-mail, chat box
Access Technology
Applications versus
access (speed) technology
Video
9
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 requirements
Examples

Remote access to business: average presentation file size
‘95
‘96
200 Kbyte
460 Kbyte
2 Mbyte

Internet access: typical Microsoft game is 10 Mbyte

Download
times:
‘97
50
Minutes
40
30
P res entation
20
Game
10
0
P S TN
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IS DN
ADS L
11
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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Positioning of applications / services from
Network Operators towards Customers
Revenue Very high revenue per user
operator
Important revenues
Highest total revenues
Lowest chance
on high revenues
Important revenues
Very low revenue per user
Nice to have >>
4th Internet Conference, Istanbul/ Sibel Serhan Ozcan
13-15/11/1998
Interested
>>
Customer needs
Very interested >> Fundamental need
13
Revenue per user for operator
Residential users services
Notification
Forwarding
Video
telephony
Filtering
Interactive
VOD / IP
On-line registration
Profile / access mgt
New (higher speed) apps over IP
(radio, home shopping, etc.)
Kiosk access
QOS:
port availability
bandwidth
PC to Phone/Fax
Browse & Talk
Phone-Phone over
IP - LD / LQ & LC
Telephony over
ISDN
Telephony
over POTS
Web surfing
(e-mail, news, WWW)
Residential user needs
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Revenue per user for operator
Residential users services
Technology perspective
Notification
Forwarding
Video
telephony
IP@ATM
ADSL
Filtering
Kiosk access
VPN
IP@ATM
On-line registration
Profile / access mgt
Interactive
VOD / IP
Services resulting from
IN - TMN - SMC - RAN
New (higher speed) apps over IP
(radio, home shopping, etc.)
QOS:
port availability
bandwidth
PC to Phone/Fax
Browse & Talk
Phone-Phone over
IP - LD / LQ & LC
Now
Short Term (<1 year)
Telephony over
ISDN
VoIP
Telephony
over POTS
Web surfing
(e-mail, news, WWW)
Medium Term (>1 year)
Residential user needs
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Revenue per user for operator
Enterprises and Service Provider services
Kiosk Access
& Invoicing
Invoicing
High Speed
Access & Switching
(E3/T3, STM-1)
Data Integrity
& Confidentiality
AAA Services
Filtering
QOS:
bandwidth
access ports
AAA Proxy
Services
Medium Speed
Access & Switching
(T1/E1, n*64)
Access Coverage:
geographical distribution
access types
Corporate and Service Provider needs
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Revenue per user for operator
Enterprises and Service Provider services
Technology perspective
Kiosk Access
& Invoicing
Invoicing
IP@ATM
High Speed
xDSL
Access & Switching
IP@ATM
Data Integrity
& Confidentiality
QOS:
bandwidth
access ports
(E3/T3, STM-1)
AAA Services
VPN
Filtering
xDSL
ATM
ISDN
GPRS
Cable
Modem
Now
AAA Proxy
Services
Medium Speed
Access & Switching
(T1/E1, n*64)
Access Coverage:
geographical distribution
access types
Short Term (<1 year)
Medium Term (>1 year)
Corporate and Service Provider needs
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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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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
4th Internet Conference, Istanbul/ Sibel Serhan Ozcan
13-15/11/1998
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The Internet spreads out
Content
Providers
ISP / OSP
IAP
(AOL, Compuserve, T-On-Line,
WANADOO, Havas-On-Line)
POP
POP
Network
Access
Point
(NAP)
POP:
-Remote Access
-Routing
-Mail/News/...
-AAA
4th Internet Conference, Istanbul/ Sibel Serhan Ozcan
Internet
Today
13-15/11/1998
TELCO
USERS
(Incumbent, New Operators)
Data Networks
(FR, ATM, IP)
Internet
Tomorrow
Professionals
GSTN
(PSTN, ISDN,
Mobile)
Access
(Wireline, Wireless,
ADSL, WW)
POP:
-Remote Access
-AAA gateway
SOHOs
Residentials
Transport
(SDH,PDH)
20
Business case for Network Operator
“Acting as ISP”
Main POP
To other
ISPs
SMC
Router
Remote Access
Network
RAN
Data Backbone
RAN
RAN
External
Servers
ISP SMC:
SMC: Service Management &
Customer Care Centre
RAN: Remote Access Node
4th Internet Conference, Istanbul/ Sibel Serhan Ozcan
 Authentication
 Authorization
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 Accounting
RANs in distributed
(remote) POPs
21
Business case for Network Operator
“Concentrating traffic for ISP”
ISP
ISP
Dial-in
users
PROXY
IAP
SMC
Proxy SMC
Remote
Access
Network
RAN
Data Backbone
Routing
RAN
RAN
RAN
ISP SMC:
Proxy SMC:
Authentication
Identify ISP destination SMC
Authorization
Protocol translation towards SMC
Accounting
IP pool management
RAN port management
ISP accounting
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Business case for Network Operator
“Concentrating traffic for ISP”
ISP
ISP
Dial-in
users
PROXY
IAP
SMC
SMC
Remote
Access
Network
RAN
Data Backbone
Routing
RAN
RAN
RAN
ISP
SMC
To other
ISP
ISP SMC:
Data Backbone
Routing
RAN
Authentication
Local Telco SMC:
RAN
Identify destination tunnel
RAN port management
ISP accounting
Authorization
Accounting
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Business case for Network Operator
“Outsourcing for the corporate”
Providing access to “Intranets”
Extended ISP SMC:
Full AAA functions
Remote VPN terminal:
Access to VPN view on
telco SMC for AAA functions
VPN capability
with remote control
IAP
RAN
Data Backbone
Main Office
RAN
RAN
Corporate
Intranet
Home
Worker
SOHO
Data Backbone
Remote Office
Applications
FW
FW : Firewalls
4th Internet Conference, Istanbul/ Sibel Serhan Ozcan
FW
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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
4th Internet Conference, Istanbul/ Sibel Serhan Ozcan
13-15/11/1998
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Data Networking explosion
10% growth a month
What Access is for telephony...
Access
End User
Access
Public Telecom Operator
End User
Access
Is Remote Access becoming for data networking
Remote Access
ISP’s, corporates
L2/3 Data Network
modem
RAN
PSTN, L2 data, ADSL ,
GSM, ISDN, HFC, ..
Access
Service Providers
Access Provider
26
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
IP as internetworking layer
and interface to applications
IP unifying layer for data oriented applications
Data oriented Applications
IP
L3
L2
L1
SDH
PSTN
ISDN
ATM
FR
Ethernet
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 market
 high volume market
The “data future”
Evolve from
Switched environment
OR
ISP
PSTN Switch
Corp
ADSL, WLL
Access
Routed environment
Router with
an integrated L2 / L3 network architecture:
integrated
Users
“The new data-based architecture” access
Corp
ISP
towards
Users
The new data-based architecture
Remote Access
ISP’s, corporates
L2/3 Data Network
modem
RAN
PSTN, L2 data, ADSL ,
GSM, ISDN, HFC, ..
Access
Service Providers
QOS
High-Speed
L2/L3 Switch
Access Provider
L2/L3 VPN
QOS Forwarding
L2 QOS
Access
31
Why L3 needed?
L1/L2 technologies such as
 ADSL access
 FITL access
 Wireless access
 ISDN switching
 ATM switching
 …
have limited added value
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 and
have more value
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
Why keeping L2 and L3 separated?


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
Why keeping L2 and L3 separated?

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
Remote Access networking model
ATM (L2) connectivity
Service Providers
Access Provider
End User
AAA server
A
S
A
M
...
...
ATM backbone
ISP’s
ANT
miniRAM
RAN
...
A
S
A
M
Corporates
...
...
AAA: Authentication, Authorization & Accounting
L3 network
ANT
miniRAM
L2 network
37
Remote Access networking model
ATM (L2) connectivity
Service Providers
Access Provider
End User
AAA server
A
S
A
M
...
...
ATM backbone
PPP over ATM
ISP’s
ANT
miniRAM
RAN
...
Corporates
MAC, IP
over ATM
A
S
A
M
...
...
AAA: Authentication, Authorization & Accounting
L3 network
ANT
miniRAM
L2 network
38
Remote Access networking model
L2-L3 connectivity - Model A
Access Provider
Service Providers
End User
Service
Management
AAA server
Proxy
ATM
Network
ISP’s
A
S
A
M
Data
Network
IP-tunnels
Corporates
...
ANT
miniRAM
VC-pipes
...
...
BB-RAN
(DANA)
RAN
L2/L3 network
L2 network
39
Remote Access networking model
L2-L3 connectivity - Model A
Access Provider
Service Providers
AAA server
Proxy
Service Authentication
Service
and Authorization
Management
Accounting
VPN based
concentration
Session handling
Network Adaptation
IP over
data
ISP’s
...
End User
A
MAC, PPP, IP
S
over ATM A
ATM
Network
...
M
Data
Network
Network Adaptation
Data handling
Corporates
ANT
miniRAM
VC-pipes
Network Adaptation
...
IP-tunnels
BB-RAN
(DANA)
Line Transmission
Equipment Integration
RAN
L2/L3 network
L2 network
40
Remote Access networking model
L2-L3 connectivity - Model B
Access Provider
Service Providers
End User
Service
Management
VPN based
concentration
Session handling
Network Adaptation
ISP’s
...
Service Authentication
and Authorization
VC-pipes
Accounting
Data
Network
Session handling
Network Adaptation
Corporates
AAA
server
PPP
over ATM
ATM
Network
A
S
A
M
...
...
ANT
miniRAM
Network Adaptation
BB-RAN
PPP through (DANA)
tunnel
IP-tunnels
Line Transmission
Equipment Integration
RAN
L2/L3 network
L2 network
41
L2-L3 networking model
Heterogeneous access networks
Access Provider
Service Providers
Service
Management
AAA server
End User
Wireless
MSAN
Cable
modem
A
S
A
M
...
...
ISP’s
Data
Network
...
Corporates
AAA
server
RAN
IP-tunnels
RAN
miniRAM
Data
Network
VC-pipes
BB-RAN
(DANA)
One single interface
independently of all
access technologies served
L2/L3 network
LEX
(ISDN)
ANT
PSTN
(modem)
PSTN/ISDN
L2 network
42
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
L2-L3 networking model
VPN logical connectivity
Access Provider
Service Providers
Service
Management
AAA server
End User
Wireless
MSAN
Cable
modem
A
S
A
M
...
...
miniRAM
ISP’s
Data
Network
...
VC-pipes
IP-tunnels
Corporates
AAA
server
ANT
PSTN
(RAN)
BB-RAN
(DANA)
LEX
(ISDN)
RAN
L2/L3 network
PSTN/ISDN
L2 network
44
Remote Access L2-L3 networking model
Summary
The 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
The New Internetworking
Coms Environment
Convert technologies into services:
Remote PSTN access
(modem, ISDN, V.110)
Voice
Voice
Gway
VoIP
services
4th Internet Conference, Istanbul/ Sibel Serhan Ozcan
Service
Mgt.
Gatekeeper
Remote access
services
13-15/11/1998
Enhanced access:
ADSL, FC,
WLL, Satellite, ...
BB RAN
High-speed Internet
access services
46
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
4th Internet Conference, Istanbul/ Sibel Serhan Ozcan
13-15/11/1998
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Network architecture overview
and IP awareness
Network
Access
Points
(NAP)
Intelligent
Network
PDH, SDH
Network
ISPs:
Applications
(Mail, News,
Web)
Caching
Data Network
X.25, FR, ATM
IP Routed
Network
TMN
Residential
PSTN, ISDN
Network
Remote
workers
Access
Network
Internet
Access
Network
To data
network
Remote
offices
xDSL Access Network
Mobile (GSM, GPRS)
Network
Content
Providers
Access
Routers
IP awareness:
Full >> Some >> None
4th Internet Conference, Istanbul/ Sibel Serhan Ozcan
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Enterprises
48
Universal Access POP
Residential
NMC
SMC
Universal Access
POP
ISP services
Mega RAS POP
Core Data
Network
Data
switching
Core ATM
Backbone
Network
PDH / SDH
Network
Data
transport
Data
routing
SOHO
Fixed line &
Data Network
Remote
Office
Main Office
SP, CP
Universal Access
POP
ADSL
Access Network
Direct Access POP
ADSL POP
Cable Modem POP
13-15/11/1998
Narrowband
access
ADSL POP
Mega RAS POP
International
Connections
4th Internet Conference, Istanbul/ Sibel Serhan Ozcan
Direct Access POP
Cable Modem POP
Core IP
Network
PSTN
ISDN
GSM
CATV Access
Network
SOHO
Broadband
access
Residential
49
The Management Environment
Customer Care & Network Trouble Mgt.
Other (ISP)
Service
Management
Proxy
Mgt.
VPN
Mgt.
Performance &
Capacity
Management
Service
Management
Billing &
Accounting.
Money generation
4th Internet Conference, Istanbul/ Sibel Serhan Ozcan
13-15/11/1998
Network
Management
Network
View
Service
Pack.
User and
Service
Mgt.
Fault
Correlation
Umbrella
Mgt.
Network Element
Management
Radius
Networks
RAN Conf. &
Fault Mgt.
SNMP
NB - BB
RAN
Cost saving
50
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
4th Internet Conference, Istanbul/ Sibel Serhan Ozcan
13-15/11/1998
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Service Management (2)


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 operator
4th Internet Conference, Istanbul/ Sibel Serhan Ozcan
13-15/11/1998
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Overview
SMC
User & Service Accounting
SLA / VPN Accounting
Policy Management
SLA reporting
SMC
SLA management.:
- port management
- VC / BW management
IP pool management
User & Service Authorization:
- services (IP filter)
- service level (VC management)
User Authentication
VPN Access
4th Internet Conference, Istanbul/ Sibel Serhan Ozcan
NB/BB RAN
13-15/11/1998(ISP operations)
Tunnel AA
Filter,
translate
AAA
Proxy AAA
RADIUS
VPN terminal
User/
Serv. AA
Tunnel mgt.
RADIUS or TACACs
NB/BB RAN
(IAP L3)
NB/BB RAN
(IAP L2)
53
Overview
SMC with Signaling Gateway
PSTN
User & Service Accounting
SLA / VPN Accounting
Policy Management
SLA reporting
Local Apps
VPN port
control
SS7 to
RAN Q.931
Conversion
SLA management.:
- port management
- VC / BW management
SMC
SS7 Signaling Gateway
SS7
IP pool management
User & Service Authorization:
- services (IP filter)
- service level (VC management)
User Authentication
VPN Access
Q.931’
NB RAN
4th Internet Conference, Istanbul/ Sibel Serhan Ozcan
NB/BB RAN
(ISP operations)
13-15/11/1998
Tunnel AA
Filter,
translate
AAA
Proxy AAA
RADIUS
VPN terminal
User/
Serv. AA
Tunnel mgt.
RADIUS or TACACs
NB/BB RAN
(IAP L3)
NB/BB RAN
(IAP L2)
54
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 cost
4th Internet Conference, Istanbul/ Sibel Serhan Ozcan
13-15/11/1998
55
Conclusion
Way to profitability in Internet networking
New IP
Revenues ADSL MUX
More revenue from
existing infrastructure
through IP
Service Mgt
BB-RAN
IN/TMN
Remote Access
Network
Mgt
Cost effective
IP implementation
4th Internet Conference, Istanbul/ Sibel Serhan Ozcan
13-15/11/1998
56