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Premium member Presentation Transcript Internet Protocol Version 6(IPv6): Internet Protocol Version 6(IPv6)Why IPv6 ?: Why IPv6 ?Explosion of New Internet Appliances: Explosion of New Internet AppliancesPowerPoint Presentation: IPv4 IPV6Transmission Control Protocol : Transmission Control Protocol Transmission Control Protocol (TCP) TCP/IP is a set of protocols developed to allow cooperating computers to share resources across a network .Description of TCP/IP: Description of TCP/IPTCP/IP Protocol Suite: TCP/IP Protocol SuiteIPv6 Features: IPv6 Features Large address space (2^128) New header format Efficient and hierarchical addressing and routing infrastructure Stateless and stateful address configuration Built-in security Better support for prioritized delivery New protocol for neighboring node interaction Extensibility and No more broadcastIPv4 & IPv6 Header Comparison: IPv4 & IPv6 Header Comparison Version IHL Type of Service Total Length Identification Flags Fragment Offset Time to Live Protocol Header Checksum Source Address(32 bit) Destination Address Options Padding Version Traffic Class Flow Label Payload Length Next Header Hop Limit Source Address(128 bit) Destination Address IPv4 Header IPv6 Header - field ’ s name kept from IPv4 to IPv6 - fields not kept in IPv6 - Name & position changed in IPv6 - New field in IPv6 LegendIPv6 Address Representation: IPv6 Address Representation 16-bit fields in case insensitive colon hexadecimal representation 2031:0000:130F:0000:0000:09C0:876A:130B Leading zeros in a field are optional: 2031 :0: 130F :0:0:9C0: 876A:130B Successive fields of 0 represented as ::, but only once in an address: 2031:0:130F :: 9C0:876A:130B 2031 :: 130F :: 9C0:876A:130B 0:0:0:0:0:0:0:1 => ::1 0:0:0:0:0:0:0:0 => :: IPv4-compatible address representation 0:0:0:0:0:0:192.168.30.1 = ::192.168.30.1Ping Test Tool: Ping Test ToolIPv6 Internet Layers: IPv6 Internet LayersPowerPoint Presentation: IPv6 ICMPv6 (Internet Control Message Protocol v6) Neighbor Discovery (ND) Multicast Listener Discovery (MLD)IPv6: IPv6 IPv6 Header Extension Headers Upper Layer Protocol Data Unit TCP Segment UDP MessageIPv6 Extension Headers: IPv6 Extension Headers IPv6 packet with a payload size greater than 65,535 bytes is named a jumbogram.Internet Control Message Protocol v6: Internet Control Message Protocol v6 If the IPv6 packets are not delivered to the destination address. Destination Unreachable Echo Request Packet Too Big Time Exceeded Parameter Problem No Route Found Communication Prohibited by Administrative PolicyNeighbor Discovery (ND): Neighbor Discovery (ND) IPv6 Neighbor Discovery (ND) is a set of messages and processes that determine relationships between neighboring nodes. ND replaces ARP, ICMP Router Discovery, and ICMP Redirect used in IPv4 and provides additional functionality Advertise their neighbor routers addresses, configuration parameters to host. Inform near by router address to forward packets for a specific destination.(Routing Table) Support Auto Address Configuration without the Dynamic Host Configuration Protocol(DHCP Server).Multicast Listener Discovery(MLD): Multicast Listener Discovery(MLD) Multicast Listener Discovery (MLD) is the IPv6 equivalent of Internet Group Management Protocol version 2 (IGMPv2) for IPv4. Responsible for exchanging the messages between the router and nodes. MLD uses the ICMPv6 Messages structure. Enabling the Routers to discover the set of Multicast addresses for the listening nodes.Packet Fragmentation - MTU: Packet Fragmentation - MTU The source node determines the maximum transmission unit or MTU for a path before sending a packet. If the packet to be sent is larger than the MTU, the packet is divided into pieces(source node), each of which is a multiple of 8 bytes and carries a fragment header. IPv6 requires that every link supports an MTU of 1280 bytes or greater.IPSec: IPSec The original standards for the TCP/IP protocol suite were not designed to protect IP packets IPSec is based on an end-to-end security model by adding additional header – Authentication Header and ESP (Encapsulated Security Payload). Uses the Hash algorithm to encrypt(cryptographic mechanism) the packet with checksum, ICV and secret key. IPSec supports two modes: Transport mode and Tunnel modePowerPoint Presentation: Transport Mode Tunnel ModeIPv6 – End to End Solution: IPv6 – End to End Solution The simplest way to ensure that a new IPv6 node maintains compatibility with existing IPv4 systems is to provide a dual IP stack implementation The node will have both a128-bit IPv6 address and a 32-bit IPv4 address. IPv6 provides good mobility support for wireless core infrastructure. Both IPv4 and IPv6 works parallel. No need any replacement. Conversion of IPv6 packets to IPv4 packet header, while the data packets travelling in the IPv4 network Will not work with “NAT” environment .Mobile IP: Mobile IPIPv6 Mobility: IPv6 Mobility Mobile hosts have one or more home address relatively stable; associated with host name in DNS A Host will acquire a care-of address when it discovers it is in a foreign subnet (i.e., not its home subnet) uses auto-configuration or local policy to get the address registers the care-of address with a home agent, i.e., a router on its home subnet Packets sent to the mobile’s home addresses are intercepted by home agent and forwarded to the care-of address, using encapsulation Mobile IPv6 hosts sends binding-updates to correspondent to remove home agent from flowMobile IP (v4 version): Mobile IP (v4 version) home agent home location of mobile host foreign agent mobile host correspondent hostMobile IP (v4 version): Mobile IP (v4 version) home agent home location of mobile host foreign agent mobile host correspondent hostMobile IP (v4 version): Mobile IP (v4 version) home agent home location of mobile host foreign agent mobile host correspondent hostMobile IP (v4 version): Mobile IP (v4 version) home agent home location of mobile host foreign agent mobile host correspondent hostMobile IP (v6 version): Mobile IP (v6 version) home agent home location of mobile host mobile host correspondent hostMobile IP (v6 version): Mobile IP (v6 version) home agent home location of mobile host mobile host correspondent hostMobile IP (v6 version): Mobile IP (v6 version) home agent home location of mobile host mobile host correspondent hostMobile IP (v6 version): Mobile IP (v6 version) home agent home location of mobile host mobile host correspondent hostMobile IP (v6 version): Mobile IP (v6 version) home agent home location of mobile host mobile host correspondent hostThanks For Your Attention !: Thanks For Your Attention ! 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