Next Generation Internet with Enhanced Subscriber Management

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Next Generation Internet with Enhanced Subscriber Management

Wisely Ng

© Alcatel-Lucent 2012 All Rights Reserved

Next Generation Internet

VoIP

Managed Online Services

Triple Play

bundle

IPTV

Blended

voice,

video

& data

services

2000 2006 today

Services over the IP network are evolving from best-effort High Speed Internet (HIS) to Enhanced HSI, VoIP and IPTV, with a blending of the services

2009

To deliver next generation internet services, carrier IP network architecture must transform from single

service to multiservice, become much more reliable, and enforce strict Quality of Service requirements

These challenges are simply too much for legacy IP infrastructure,

a transformation to a purpose-built network foundation is needed

2 | Next Generation Internet with Enhanced Subscriber Management

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Market and technology drivers

Low bandwidth, bursty application

traffic (web browsing, email)

Compete on (peak) download speeds

Best effort, flat-rate, connectivity

Sell unbundled Internet access

High bandwidth, sustained usage

(Peer-to-peer download, OTT video)

Compete on quality of experience

Managed and assured online services

Sell blended service bundles (ARPU+)

Peak Rate (PIR)

Constrained by Broadband Access Physical: distance (loop length) and

medium (copper, fiber, wireless)

Throughput (CIR)

Constrained by IP Service Edge Statistical: 20k subscribers per GigE yields

50 kb/s average/subscriber

DSLAM Access Node

Aggregation Network

IP Service Edge

20,000 subscribers compete for…1 Gigabit Ethernet port

PPPoE Session per Subscriber

Copper line Gigabit Ethernet

BRAS

0

0.1

1.0

10

Mbps

PIR CIR

Average b/w

per Subscriber

0

10

20

30

40

50

60

70

Over

Subsc

ripti

on R

ati

o

Factor

Over

Subscription

Scalable Capacity

QoS policy enforcement

Multiservice Convergence



The Need to Assure Quality of Experience of Internet Services

Over time VoIP evolves to blended IP multimedia services

Quality of user experience is key to long-term success and

profit

IPTV services are by far the most demanding

in terms of quality.

User expectations are set very high.

HSI

VoIP IPTV

On The Top (OTT) video demands better QoE than best effort HSI services can provide

Dissatisfied customers may churn all their services, not just one.

Delivering “Quality of Experience” across all services is a brand-defining attribute



First option: Cost Control

Throttling bandwidth hungry applications to preserve existing services

BRAS Aggregation DSLAM Internet

DSL Gateway

Using DPI to throttle bandwidth hungry applications

May free up some bandwidth but does not solve QoE issues for OTT video

Throttling specific Internet applications (e.g., P2P) violates “net neutrality”

Best effort Best effort

DPI

“Nefarious apps”

BRAS Aggregation DSLAM DSL Gateway

Best effort Best effort

Capacit

y U

sage

Subscriber Population

Bandwidth cap

Light user

Power user

Normal user

Introducing service tiers and usage caps

“Fair use” policies in stead of “all-you-can-eat”

Application agnostic cap; adheres to net neutrality

But does not solve QoE issues for Internet video

Does not address monetization issue (value per bit)



Second option: Keep Adding More Bandwidth

Increasing average bandwidth per sub is

expensive and disruptive (re-engineering)

No guarantee bandwidth will be available

for applications that need it (Best Effort)

Service delivery cost per sub will increase

Unclear how to recuperate upgrade cost

Reduce subscribers per DSLAM Add capacity Reduce subscribers per BRAS

Just adding bandwidth is not a sustainable solution!

0

0.1

1.0

10

Mbps

HSI OTT-Video

Average b/w per Subscriber

0

10

20

30

40

50

60

70

Over

Subsc

ripti

on R

ati

o

HSI OTT-Video

Over Subscription

DSLAM

BRAS

Switch

PPPoE Best effort Best effort (UBR)

Aggregation DSL modem Access



VoIP

VPN

Gaming

Third Option: Adding “Service Value” to Deliver a Better Experience

Opportunity: Offer a portfolio of new, managed on-line services

Unmanaged Service Managed Service

HSI

Mb/s

kb/s

Challenge: Preserve existing service experience while enabling emerging applications and content

Managed Services Bring a Positive, Value-Centric Response to Consumer Demands

Average Bandwidth

per Subscriber

Others ...

Managed On-Line Services

Each managed service defined by its requisite QoS (e.g., bandwidth, latency,

packet loss, etc.)

Video



Convergence in the IP edge

Converged

OSS Apps

Policy

manager BNG AN CPE

Next -generation network

Legacy

BRAS RADIUS server CPE DSLAM

PPPoE

ATM

aggregation Billing

system

Legacy PPPoE HSI network

Multiple Devices

Per Subscriber

IT/OSS Transport Service

migration

RADIUS/DHCP

server

EAN

HQoS

Leveraging existing IT/OSS infrastructure while migrating legacy transport



Alcatel-Lucent’s Triple Play Service Delivery Architecture (TPSDA)

Centralized Policy

Management

IP/MPLS

BSAN broadband

service access

node

ISAM Family

BSA/EAN broadband

service

aggregator

7450 ESS

BNG broadband

service router

7750 SR Copper,

fiber

7750 SR

Personalized

IPTV

Broadband

Internet

Services

RG

residential

gateway

Digital

Home

IP

Communications

• High availability - redundancy and

resiliency mechanisms at all layers

• Fine-grain QoS on a per-

service/application/subscriber basis

• Distributed policy resource control

• Centralized network, service and

subscriber management

• Secure network access and content e2e

Key Attributes Value Proposition

• Assures Quality of Experience

with non-stop service delivery

• Distributed intelligence ensures

multi-dimensional scalability to

accommodate massive growth

• Provides ultimate flexibility to

accelerate deployment and

service innovation

Credentials

• Proven in 55+ carrier networks

• Validated by Isocore for mass

deployment (80k residential

subscribers)


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Policy and Resource Control

Congestion Avoidance and Service Admission Control

Service admission control = safeguarding service quality and resource availability

Complements other quality assurance mechanisms by providing deterministic throughput guarantees for services through a controlled bandwidth allocation

Preserve service quality of sessions in progress against overbooking/congestion risk

Maximize revenues from available capacity by prioritizing demand in peak situations

BTV/VoD Servers

1st mile 2nd mile 3rd mile Server Links

BNG EAN AN

Hub Metro

Office Serving

CO

Super

Hub

~300 subs ~10K subs ~100K subs

IPTV

HSI VoD

BTV BTV

VoD

TPSDA provides a comprehensive approach to congestion avoidance to meet service quality, availability and cost objectives

VoIP per line

SD/HD streams

HSI CIR<>PIR


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Enhanced Subscriber Management (ESM)

Automated subscriber provisioning

Subscriber identification, authentication, authorization, accounting,

addressing

Assignment of subscriber QoS policies and queuing resources to ensure

SLAs per subscriber, service, and application

— Provides subscriber fairness

— Application differentiation

Subscriber security to avoid unauthorized access

—Anti-spoofing, ACL

Subscriber persistency and availability

Subscriber troubleshooting/OAM

Subscriber lawful intercept

Any mode of operation

Routed, bridged (VLAN), IPv4, IPv6, PPP, IPoE

Radius or Diameter for accounting

Alcatel-Lucent ESM provides automatic subscriber provisioning with per-subscriber

QoS and policy control and enforcement

AAA plus advanced

QoS and policy

control

Automated

subscriber

provisioning

Support for IPv4

and IPv6 service

environments

Alcatel-Lucent unique services-based routing design and enhanced subscriber management

provide enable fully automated subscriber provisioning



Enabling QoE for Triple Play Services

Per-Subscriber & Per-Service QoS

HSI

Gold

Bronze

ON-NET

VoIP

Video VoIP

Video

HSI

VLAN PER SUB

Broadband service access

Per-subscriber/Per-service HQoS

Broadband

Service

Aggregation

IP service

edge

Per-service/Per-node HQoS

Bandwidth Budget and/or Priority Allocated to Each Subscriber and Each Service Category

Voice, Video, Business and Residential HSI services prioritized on a per customer

and per service basis

• Per-subscriber queuing and PIR/CIR policing/shaping for HSI

• Optional overall subscriber rate limiting

• HSI content differentiation

• Per-service prioritization for VoIP and video (VoIP prioritized over video)

H-QoS policy enforcement allows per-subscriber, per-service level controls

IP



Enhanced Subscriber Management

Auto-Configuration

EAN (7450 ESS)

AN BNG

(7750 SR)

IPoE or PPPoE

IPoE or PPPoE

IPoE or PPPoE

IPoE or PPPoE

IP Address

Allocation

DHCP or RADIUS

AAA Server

DHCP

Snooping

Customer Prem. Net Access and Aggregation Network

Regional Broadband Network

CPE

IP

Subscriber

[email protected]

Multiple Subscriber hosts assigned to John Doe

Subscriber-Profile

John Doe has a 8Mbs profile

SLA-Profile(s)

2 Mb/s TV

512Kb/s VoIP

5.5 Mb/s HSI ESM can be instantiated at layer 2 in the access network Bridged – CO (DHCP)

Or at the BNG in a Routed – CO model ( DHCP and PPPoE)




Apply Policies for QoS & Security

BSA BSAN

BSR

DHCP Snooping

5750 SSC

Radius

or DHCP

Authentication, Authorization • Identify sub and assign user, SLA, app profile

• Validate DHCP Option/Radius VSA Usage

• IP Address allocation

DHCP Snooping

DHCP-Radius proxy DHCP Snooping

User-to-user bridging is blocked

ARP broadcasts & ICMP redirects blocked

Anti-spoofing DHCP-configured ARP table

Auto-filter Automatic anti-spoofing security filters

to prevent service theft and DoS

attacks

Auto-QoS Automatic lookup and instantiation of

queues/QoS policies for sub-host (PSCP)

Prevent User-to-user bridging

Block ARP broadcasts & ICMP redirects

Anti-spoofing DHCP or RADIUS-configured ARP table

Rate-limiting User-initiated broadcasts

Auto-filter Automatic security filter setting to prevent

service theft and DoS attacks

Auto-QoS Automatic instantiation of subscribers and

dynamic application of queues and policies Broadband Service Access Node • Host distribution across subscribers/ports

• VLAN assignment, DHCP option insertion

• TV channel distribution across ports

Subscriber Host Authentication • PPP or IPoE/DHCP

• IGMP join/release (BTV)

Broadband Service Aggregation & Routing



Enhanced Subscriber Management: Sophistication & Control

From Legacy HSI Tunnels to Application-Aware, Triple Play Policy Management

GE

Per Sub

Per

Sub

Legacy BRAS Subscriber Tunnel

Voice

IPTV

HSI

Multi-Service

Per

Sub

Voice

IPTV

On-line Services Managed Gaming

Managed Video

Managed VoIP

HSI

Per Subscriber

Personalization • per-subscriber • per-service • per-application

• per-subscriber • per-service

• Single-service (HSI)

Triple Play Architecture with Intelligence, Control and Traffic Management

Services

On-line

Managed

IPTV

Voice

Unmanaged Service Managed Service

HSI

Mb/s

kb/s

Average Bandwidth

per Subscriber

Comprehensive Service Portfolio

Multi-Application

HSI Per Sub

Hierarchical QoS



Application Assurance for Advanced Internet Services

GE

CIR = 30 Mb/s

PIR = 30 Mb/s

Voice (EF)

Video (EF)

HSI (BE)

Business Data (AF2) GigE

CPE

CIR = 30 Mb/s

PIR = 30 Mb/s

CPE

‘Service Aware’ Services

…

SAP

Video conferencing

Email

CIFS

Citrix

Remote access

Oracle

HTTP YouTube

IM

Web Browse

E-Learning

VoIP

Streaming video

File Transfer

Scavenger apps

‘Application Aware’ Services

Private

Corporate

7750 SR/ 7450 ESS

7750 SR/ 7450 ESS

Leveraging the Application Assurance for assured delivery of

Internet Services

GigE

Voice (EF)

Video (EF)

HSI (BE)

Business Data (AF2)



Non-Stop Service Availability

Anycast RP

System

Resiliency

MC-LAG — Multi-chassis Ling Aggregation

Any Access

802.3ad Capable

xDSL

G-PON

Access Aggregation Service Edge

Resi

denti

al

MC

S

Internet

Video

Voice

X

MC-LAG

11

22

Resil iency Extended to Access to Core

Resilient

MPLS/VPLS

Network

Resiliency

Resilient

IP Core



Summary


Highly available, QoS-enabled Next Generation Internet Services

Multi-dimensional scalability - subscriber & bandwidth – with

congestion avoidance mechanisms

Integrated security and subscriber management by Auto-

Configuration

Comprehensive tools to plan, control and assure Quality of

Experience


Next Generation Internet with Enhanced Subscriber Management

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