Wipro Webinar
IPv6 Transition:
The way ahead & the
need for preparedness
07th December, 2011
1
Presenters
Mike Sapien
Moderator,
Principal Consultant,
Ovum
Sriram TV
Business Head,
Telecom Network Services,
Wipro
Abhay Savargaonkar
Senior Vice President & Head,
Network Planning,
Bharti Airtel Limited
Alan Young
Consultant,
Media & Network Services,
Wipro
2
Agenda
1
Industry Outlook to IPv6 Migration
2
Hindrances & Business Benefits of IPv6 Migration
3
Wipro’s Approach to Enable IPv6 Migration
4
Bharti Airtel IPv6 Migration Journey
Industry Outlook to IPv6 Migration
4
Transition to IPv6 has already begun
Carriers and ISPs are all making for this transition now
There are different methods and phases in making the transition by service
providers
IPv6
Transition /
Migration
The catalyst is the increasingly smaller availability of IPv4 addresses but it is
not the only reason
Recent report indicates that service providers are moving already with plans
for completion within one year’s time.
Even though enterprise customers don’t seem to be concerned today; it will
become critical in 2012 for service providers to be ready
5
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
6
Hindrances & Business Benefits of IPv6 Migration
7
Hindrances to IPv6 Migration
IPv6 is not backwards
compatible with IPv4

Though both can exist on the same physical
IPv4 devices & networks are
pervasive (consumer environment)

network at the same time

Multiple methods exist to enable operation of
to come

IPv6 on IPv4 networks and visa versa
Lack of awareness among the
masses

There is still a lot of equipment on sale
Someone else’s issue!
IPv4 address space won’t last, so some form of Carrier
Grade NAT is inevitable
Business case for IPv6 investment
is unclear

(especially consumer) that is IPv4 only

Dual operation will therefore be required for many years
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
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Business Benefits of IPv6 Migration
Enables the
“Internet of
Things”
Massive
Address Space
– No NAT
Stateless
Address AutoConfiguration
Efficient Packet
Processing and
Routing
Built in Security
Framework
Multicast
Support
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Wipro’s Approach to Enable IPv6 Migration
10
Wipro is Uniquely Positioned
Winning in the Digital World
Today Wipro works with….
MEDIA
Consumer
Devices

Cable &
Satellite
DIGITAL
SECTOR
TECH
11
Equipment
TELECOM




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’s Comprehensive suite of Offerings
IPv6 Training
Service
IPv6 Migration
Planning &
Implementation
IPv6
Business
Continuity plan
implementation
12
IPv6
Consulting
Service
( Business
Continuity
Plan)
IPv6 Training Service
IPv6 Basics (IPv6 Addressing, Features & Routing)
IPv6 and IPv4 Coexistence
Business Continuity Techniques
IPv6 Migration technologies
IPv6 Transitioning Techniques
13
IPv6 Consulting Service
Understand Current IPv4 Address
depletion status and business impact
Jobs
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
Plan for Business Continuity Time Line
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Business Continuity Planning
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
Phase II
 Network Topology Assessment & IPv6 Addressing
 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
 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
 Enterprise VPN Services Plan & implementation
Wipro Approach
Phase III
Phase IV
 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
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 Turn off IPv4
( Many Years Away )
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
Country
IPv4
(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
2%
Available
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Source as on 05-Jan-11: http://www.potaroo.net/tools/ipv4/index.html
Network Operator puzzles
Multiple transition approaches
under study @ IETF
How to ease the introduction of IPv6,
and ensure IPv4 service continuity?
How to balance trade-off between
transition approach network architecture?
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 IPv6
Mobile node, home agent, home link,
foreign link
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
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(same)
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
Today’s World & the Ecosystem
IPv4 World Today- The Starting Point
Device
21
N/w infra
ISP
Intl b/w
Content
Mobility Perspective
Mobile IPv4
IPv4
MIPv4/MIPv6 Inter-working
IPv4
IPv4
IPv4
IPv4
IPv6
IPv4
IPv4
IPv4
IPv6
IPv6
IPv4
IPv6
IPv6
Mobile IPv6
IPv6
IPv6
IPv6
IPv6
IPv4
IPv6
IPv4
IPv6
IPv6
IPv4
IPv4
IPv6
IPv4
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MIPv4/MIPv6 Inter-working
IPv4
IPv6
IPv6
MIPv4/MIPv6 Inter-working
Transition Tools
Translators
IPv4 Header
Data
IPv6 Header
Tunnels
Data
IPv4 NW
IPv4
IPv6
IPv6
IPv6
Host
IPv6  IPv4 translation
 SOCKS64  NAT-PT
 SIIT
 BIS
 TRT
IPv6 Header Data
 Configured
 Automatic
Tunnels
www.karnataka.gov.in
IPv4
host
IPv4 & IPv6
Network
IPv6 Header Data
IPv6 Tunneled over IPv4
Dual-Stack
Application
TCP/UDP
IPv4
IPv6
Link
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IPv6
IPv4 Header IPv6 Header Data
CGNAT
IPv4
Host
tunnel
IPv6
host
IPv6/IPv4 co-existence
 Tunnel
broker
 6 to4
 6 ver4
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
First Phase




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.
Second Phase



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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.
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
Email your questions to
sriram.tvs@wipro.com
vismay.sood@wipro.com
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