IPv6 Transition: The way ahead & the need for preparednessneed for preparedness 07th December, 2011 1 Wipro Webinar.

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IPv6 Transition: The way ahead & the

need for preparedness

07th December, 2011

Wipro Webinar

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Presenters

Mike SapienModerator, Principal Consultant, Ovum

Sriram TVBusiness Head, Telecom Network Services,Wipro

Abhay Savargaonkar Senior Vice President & Head,Network Planning, Bharti Airtel Limited

Alan YoungConsultant, Media & Network Services,Wipro

Agenda

Bharti Airtel IPv6 Migration Journey

Industry Outlook to IPv6 Migration

Hindrances & Business Benefits of IPv6 Migration

Wipro’s Approach to Enable IPv6 Migration3

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Industry Outlook to IPv6 Migration

Transition to IPv6 has already begun

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IPv6 Transition / Migration

There are different methods and phases in making the transition by service providers

Carriers and ISPs are all making for this transition now

Recent report indicates that service providers are moving already with plans for completion within one year’s time.

The catalyst is the increasingly smaller availability of IPv4 addresses but it is

not the only reason

Even though enterprise customers don’t seem to be concerned today; it will become critical in 2012 for service providers to be ready

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Need for IPv6

It is more than just lack of addresses that are driving the need for the transition

The IPv6 transition implementation plans vary and have distinct phases (Assess-Plan-Implement-Test)

Devices, web resources, websites, content providers and network providers are all involved – “internet ecosystem”

Similar to HD service, the entire value chain has to support IPv6 addressing (e.g. this ecosystem)

Service providers need to finish their plan and now start to implement this migration to support IPv6 in all its services.

This need will expand beyond the Asia-Pacific region quickly

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Hindrances & Business Benefits of IPv6 Migration

Hindrances to IPv6 Migration

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IPv4 devices & networks are pervasive (consumer environment)

Dual operation will therefore be required for many years

to come

IPv4 address space won’t last, so some form of Carrier

Grade NAT is inevitable

IPv6 is not backwards compatible with IPv4

Though both can exist on the same physical

network at the same time

Multiple methods exist to enable operation of

IPv6 on IPv4 networks and visa versa

Lack of awareness among the masses

There is still a lot of equipment on sale

(especially consumer) that is IPv4 only

Someone else’s issue!

Business case for IPv6 investment is unclear

Dual IPv4/v6 operation and need for Carrier Grade NAT

means increased complexity and therefore cost

Difficult to define payback when few people understand

the problem

Some even argue that IPv4 can be extended indefinitely

by using Carrier Grade NAT

Business Benefits of IPv6 Migration

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Built in Security Framework

Massive Address Space

– No NAT

Stateless Address Auto-Configuration

Efficient Packet Processing and

Routing

Multicast Support

Enables the “Internet of

Things”

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Wipro’s Approach to Enable IPv6 Migration

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Today Wipro works with…. 9 of the Top 15 Communication Service

Providers 4 of the Top 6 Mobile Device Vendors 7 of the Top 10 Telecom Equipment

Vendors Top 3 Publishers Top 2 Satellite Providers

Wipro is Uniquely Positioned

Winning in the Digital World

MEDIA

TECH TELECOM

Consumer Devices

Equipment

Cable & Satellite

DIGITALSECTOR

Wipro’s Comprehensive suite of Offerings

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IPv6 Migration Planning &

Implementation

IPv6 Consulting

Service

( Business Continuity

Plan)

IPv6 Training Service

Business Continuity plan implementation

IPv6

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IPv6 Training Service

IPv6 Basics (IPv6 Addressing, Features & Routing)

IPv6 and IPv4 Coexistence

Business Continuity Techniques

IPv6 Migration technologies

IPv6 Transitioning Techniques

IPv6 Consulting Service

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Job

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Plan for Business Continuity Time Line

Understand Current IPv4 Address depletion status and business impact

Study of the network and services

Identify areas of immediate impact and determine HW & SW upgrades

Determine CAPEX & OPEX needs to achieve Business Continuity

Document the business Continuity plan for short term

Business Continuity Planning

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Planning &Implementation for

IPv6 Ensure Business Continuity

Design and build for IPv6 and IPv4

Coexistence

Turn of IPv4( Many years away)

Preparation should be such that design and build doesn’t become prohibitively expensive

Design, Build and Migration should be achieved with minimal impact

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Phased Network Migration Plan

Phase I

Assessment of Network Devices Lab Setup, DNS & DHCP Migration Application and OS Testing for IPv6 Enabling IPv6 Device & Network Security 6PE: IXP Connectivity and Peering Enabling IPv6 Enterprise requirements Enterprise VPN Services Plan & implementation

Phase II Network Topology Assessment & IPv6 Addressing Smart Phone & Mobile Device testing Planning & Design for DSL/Cable/Wireless Broadband Migration Plan using LSN 444, 6RD,

DS-LITE & Dual Stack DSL Broadband Migration

Phase III

Identify areas that IPv6 has not been covered

from Access networks point of view Example: Migrating Pseudo wires using IPv4

based targeted LDP Sessions Implement solutions to address areas not

covered in Phase I, II and III

Phase IV

Turn off IPv4

( Many Years Away )

Wipro Approach

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Bharti Airtel IPv6 Migration Journey

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Urgency of IPV6!

232 = 4,294,967,296 APNIC allocated all /8 in Feb 11 7 of last /8 being allocated by RIRs

Source as on 05-Jan-11: http://www.potaroo.net/tools/ipv4/index.html

2% Available

CountryIPv4 (Bn)

Population (Bn)

IPv4/ person

USA 1.560 0.310 5.03

India 0.030 1.191 0.03

ROW 1.709 5.403 0.32

Total/Average 3.299 6.905 0.48

Network Operator puzzles

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Multiple transition approaches under study @ IETF

How to balance trade-off between transition approach network architecture?

How to ease the introduction of IPv6, and ensure IPv4 service continuity?

Vendor readiness with end-to-end solution for commercial deployment?

Amount of preparatory work to be done concerns NW operators

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Mobile IPv4 vs. Mobile IPv6

Mobile IPv4 Mobile IPv6Mobile node, home agent, home link, foreign link

(same)

Mobile node’s home address Globally routable home address and link-local home address

Foreign agent A “plain” IPv6 router on the foreign link (foreign agent no longer exists)

Collocated care-of address

Care-of address obtained via Agent Discovery, DHCP, or manually

Care-of address obtained via Stateless Address Auto configuration, DHCP, or manually

Agent Discovery Router Discovery

Authenticated registration with home agent Authenticated notification of home agent and other correspondent nodes

Routing to mobile nodes via tunneling Routing to mobile nodes via tunneling and source routing

Route optimization via separate protocol specification

Integrated support for route optimization

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Today’s World & the Ecosystem

Device N/w infra ISP Intl b/wConten

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IPv4 World Today- The Starting Point

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Mobility Perspective

IPv6

IPv4

IPv4

IPv4IPv4

IPv4IPv6

IPv4

IPv4

IPv4

IPv4

IPv6

IPv4IPv6

IPv4

IPv4IPv6

IPv6

IPv4

IPv6

IPv4IPv6

IPv6

IPv4IPv6

IPv6

IPv6

IPv6

IPv6

IPv6

Mobile IPv4

Mobile IPv6 MIPv4/MIPv6 Inter-working

MIPv4/MIPv6 Inter-workingMIPv4/MIPv6 Inter-working

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Transition Tools

Dual-Stack

IPv6/IPv4 co-existence

Translators

SOCKS64 SIIT

NAT-PT

BIS TRT

www.karnataka.gov.in

IPv4 & IPv6Network

IPv4host

IPv4

TCP/UDPApplication

IPv6Link

IPv6 host

Tunnels

Configured Automatic

Tunnels

Tunnel

broker 6 to4 6 ver4

IPv4 NW

IPv6 IPv6tunnel

IPv6 Header Data IPv6 Header Data

IPv4 HeaderIPv6 Header Data

IPv4 IPv6

IPv4 Header Data IPv6 Header Data

CGNAT

IPv4 Host

IPv6 Host

IPv6 IPv4 translationIPv6 Tunneled over IPv4

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Transition Essentials

No “ D – Day for transition – unlike the Y2K transition– Last Internet transition was 1983 (NCP TCP)

Transition will be incremental– Possibly over several years

No IPv4/IPv6 barriers at any time

Easy for end user– Non disruptive Transition

IPv6 is designed with transition in mind– Assumption of IPv4/IPv6 coexistence

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Phases of Transition

IPv6 is widely deployed - numerous services are implemented on the IPv6

IPv6 Internet does not yet have a 100 per cent connectivity and tunneling via IPv4 Internet may

still be needed.

N/w infra to support dual stack Separate IPv6 islands in the network. Most IPv6 services are provided in the operator

network (Intranet). Conventional IPv4 services are provided to the

mobile users having IPv4 or dual stack terminals.

First Phase

Second Phase

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Native IPV4 Terminal

Three cases are shown Connection to an IPv4 host in Intranet Connection to an IPv4 host via public Internet Connection to an IPv4 host via public Internet using private IP addresses and NAT in

the operator network.

Operator Network

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Dual stack IPV4 terminal in IPV6 mode

The dual stack terminal is operating in IPv6 mode. The packets are routed via IPv6 Internet or tunneled via IPv4 Internet to the

peer host having a "6to4" type of address. The edge router makes the "6to4" tunneling (encapsulation / decapsulation).

Operator Network

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The Co-Existence scenario

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Conclusions

Transition urgency for India

Comprehensive planning and phased execution

Gradual, controlled transition to IPv6 in 2G / 3G mobile networks is feasible.

Transition mechanisms are vital, because the change from IPv4 to IPv6 is

not going to happen overnight.

The principal transition mechanisms used are dual IPv4 / IPv6 stacks /

tunneling and Translators (such as NAT-PT) depending on the infra

readiness

The final target architecture is to make all services function on the IPv6

platform

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Thank You

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