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     Ipv6 Ipv6 Presentation Transcript

    • IPv6 – Implementation and Advantages •A.M. Jayasekara •N.U. Wickamasinghe •W.H.M.S.P.Wijetunge • W.G.C.W. Kumara
    • AIM Identifying methods of IPv6 implementation. SAITM-RSEA2012 2
    • Content •What is IP? •IPv4 •IPv6 •Methods of IPv6 implementation. SAITM-RSEA2012 3
    • How many people use Internet every day ? SAITM-RSEA2012 4
    • SAITM-RSEA2012 5
    • • That is 2,267,233,742 (2.3 Billion) users worldwide. SAITM-RSEA2012 6 32.7% of the world population How to identify these users ? How do we name them? That is where the IP – Internet Protocol comes in !
    • Internet Protocol - Definition The principal set of procedures used for transferring data packets between devices on a network-of-networks using the Internet Protocol Suite. SAITM-RSEA2012 7
    • IP • An IP is used to , • Address each device connected to internet. • Regulate data transfer between devices. SAITM-RSEA2012 8
    • There are two commonly used IP versions at the moment. SAITM-RSEA2012 9 IPv4 – Internet Protocol version 4 IPv6 – Internet Protocol version 6
    • IPv4 • Uses 32bit addresses • Which limits the address in to 4,294,967,296 (4.3 billion) addresses. • Limited security • No authentication or encryption at IP level. • Most commonly used version. SAITM-RSEA2012 10
    • However By 2014, expected number of devices that are connected to the internet is estimated as 50 Billions. SAITM-RSEA2012 11 That is 12 times more than current IPv4 can support.
    • So what will happen ? SAITM-RSEA2012 12 Do we find ourselves unable to connect to the internet via new devices ? The answer – NO! Reason for developing IPv6 is to address the IPv4 address exhaustion.
    • IPv6  Designed to overcome limitations of IPv4. •Uses 128bit addresses • 340 Undecilion (3.4x1038) addresses. •High security • Data encryption and authentication. SAITM-RSEA2012 13
    • Increased address space Reduced management requirement Better mobility support Security Features of IPv6 SAITM-RSEA2012 14
    • How do we start using IPv6 ? SAITM-RSEA2012 15
    • Methods of IPv6 implementation There are three main methods , • Dual-Stack • Translation • Tunneling SAITM-RSEA2012 16
    • Dual-Stack •It operates both IPv4 and IPv6 simultaneously on the same infrastructure. SAITM-RSEA2012 17
    • Simple. Uses minimum resources. Some network vendors and servers do not support IPv6. SAITM-RSEA2012 18 Dual-Stack
    • Translation • Converting IPv6 traffic into IPv4 traffic for transportation and vice versa. • Traffic is not encapsulated, it is directly converted to the destination type. • Two main methods are used in translate method. SAITM-RSEA2012 19
    • Translation Methods • Network Address Translation Protocol Translation (NAT-PT) • NAT-PT method configure a translation of an IPv4 address into an IPv6 address and vise versa either statically or dynamically. SAITM-RSEA2012 20
    • Translation Methods • NAT64 • NAT64 mechanism allows IPv6 hosts to communicate with IPv4 servers. • The IPv6 client embeds the IPv4 address it wishes to communicate with and sends its packets to the resulting address. SAITM-RSEA2012 21
    • Can deal with different types of protocols Not a good option when IPv4 uses NAT SAITM-RSEA2012 22 Translation Methods
    • Tunneling •Transporting IPv6 traffic through an IPv4 network transparently. •Few different tunneling methods exists for IPv6. SAITM-RSEA2012 23
    • Tunneling Methods • Manual IPv6 Tunnels • Manually created IPv6 tunnel is configured between two routers, that each must support both IPv4 and IPv6. • 6to4 Tunnels • It is IPv6 to be tunneled via IPv4. • 6to4 allows for automatic IPv6-to-IPv4 address translation, and treats the underlying IPv4 network as one big Non-Broadcast Multi- Access network. SAITM-RSEA2012 24
    • Used on top of an existing IPv4 network. Hardware must support both IPv4 & IPv6. SAITM-RSEA2012 25 Tunneling Methods
    • Are we ready for IPv6 ? SAITM-RSEA2012 26
    • IPv6 Readiness • Compatibility with IPv6 networking is a software or firmware issue. • The American Registry for Internet Numbers (ARIN) suggests that all Internet servers to be prepared to serve IPv6-only clients by January 2012. SAITM-RSEA2012 27
    • IPv6 Readiness - Software • Most personal computers running recent operating system versions are IPv6- ready. • Most popular applications with network capabilities are ready, and most others could be easily upgraded with support from the developers. • Java applications adhering to Java 1.4 (February 2002) standards have support for IPv6 SAITM-RSEA2012 28
    • IPv6 Readiness - Hardware • Low-level equipment like network adapters and network switches may not be affected by the change. • since they transmit link-layer frames without inspecting the contents. • Networking devices that obtain IP addresses or perform routing based on IP address do need IPv6 support. SAITM-RSEA2012 29
    • Finally what should we do ? SAITM-RSEA2012 30
    • Now, as available IPv4 addresses are almost over it is the time for ISPs, large and small companies and universities to start migrating to IPv6. Based on the results of this analysis of the available technologies it is rewarding to migrate from IPv4 to IPv6 based on user requirements. SAITM-RSEA2012 31
    • Thank You SAITM-RSEA2012 32