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

2. 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

3. Agenda Bharti Airtel IPv6 Migration Journey Industry Outlook to IPv6 Migration Hindrances & Business Benefits of IPv6 Migration Wipro’s Approach to Enable IPv6 Migration 3 4 1 2

4. Industry Outlook to IPv6 Migration 4

5. Transition to IPv6 has already begun 5 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

6. Need for IPv6 6 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

7. Hindrances & Business Benefits of IPv6 Migration 7

8. Hindrances to IPv6 Migration 8

9. Business Benefits of IPv6 Migration 9 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”

10. Wipro’s Approach to Enable IPv6 Migration 10

11. 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 11 Winning in the Digital World

12. Wipro’s Comprehensive suite of Offerings 12 IPv6 Migration Planning & Implementation IPv6 Consulting Service ( Business Continuity Plan) IPv6 Training Service Business Continuity plan implementation IPv6

13. IPv6 Training Service 13 IPv6 Basics (IPv6 Addressing, Features & Routing) IPv6 and IPv4 Coexistence Business Continuity Techniques IPv6 Migration technologies IPv6 Transitioning Techniques

14. IPv6 Consulting Service 14 Jobs 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

15. Business Continuity Planning 15 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

16. Phased Network Migration Plan 16 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 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 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 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 ) Phase IV  Turn off IPv4 ( Many Years Away ) Wipro Approach

17. Bharti Airtel IPv6 Migration Journey 17

18. Urgency of IPV6! 18  2 32 = 4,294,967,296  APNIC allocated all /8 in Feb 11  7 of last /8 being allocated by RIRs  2 32 = 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.htmlhttp://www.potaroo.net/tools/ipv4/index.html Source as on 05-Jan-11: http://www.potaroo.net/tools/ipv4/index.htmlhttp://www.potaroo.net/tools/ipv4/index.html 2% Available Country IPv4 (Bn) Population (Bn) IPv4/ person USA1.5600.3105.03 India0.0301.1910.03 ROW1.7095.4030.32 Total/Average3.2996.9050.48

19. Network Operator puzzles 19 Multiple transition approaches under study @ IETF 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

20. Mobile IPv4 vs. Mobile IPv6 20 Mobile IPv4Mobile IPv6 Mobile node, home agent, home link, foreign link (same) Mobile node’s home addressGlobally routable home address and link-local home address Foreign agentA “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 DiscoveryRouter Discovery Authenticated registration with home agentAuthenticated notification of home agent and other correspondent nodes Routing to mobile nodes via tunnelingRouting to mobile nodes via tunneling and source routing Route optimization via separate protocol specification Integrated support for route optimization

21. Today’s World & the Ecosystem 21 Device N/w infra ISP Intl b/w Content IPv4 World Today- The Starting Point

22. Mobility Perspective 22 IPv6 IPv4 IPv4 IPv4 IPv4 IPv4 IPv6 IPv4 IPv4 IPv4 IPv4 IPv6 IPv4 IPv6 IPv4 IPv4 IPv6 IPv6 IPv4 IPv6 IPv4 IPv6 IPv6 IPv4 IPv6 IPv6 IPv6 IPv6 IPv6 IPv6 Mobile IPv4 Mobile IPv6 MIPv4/MIPv6 Inter-working

23. Transition Tools 23 Dual-Stack IPv6/IPv4 co-existence Translators SOCKS64 SIIT NAT-PT BIS TRT SOCKS64 SIIT NAT-PT BIS TRT www.karnataka.gov.in IPv4 & IPv6 Network IPv4 host IPv4 TCP/UDP Application IPv6 Link IPv6 host Tunnels Configured Automatic Tunnels Tunnel broker 6 to4 6 ver4 Configured Automatic Tunnels Tunnel broker 6 to4 6 ver4 IPv4 NW IPv6 tunnel IPv6 Header Data IPv6 Header Data IPv4 Header IPv6 Header Data IPv4 IPv6 IPv4 Header Data IPv6 Header Data CGNAT IPv4 Host IPv6 Host IPv6  IPv4 translation IPv6 Tunneled over IPv4

24. 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  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 24

25. Phases of Transition 25  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.  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.  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

26. Native IPV4 Terminal 26 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. 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

27. Dual stack IPV4 terminal in IPV6 mode 27 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). 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

28. The Co-Existence scenario 28

29. 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  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 29

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