WHY IPV6• The world is running out of Internet Address.• IPv4 has been officially exhausted.• “On 31 January 2011, the last two unreserved IANA /8 address blocks were allocated to APNIC according to RIR request procedures. This left five reserved but unallocated /8 blocks”
INTERNET ADDRESSES??• Unique addressing system to identify each node (endpoint) on the Internet.• Called IP Addresses
CURRENT ADDRESSING SYSTEM(IPV4)• Designed in the 70’s & 80’s• Represented by the Decimal system• Denoted by dot notation Example: 192.168.2.1Represented in Binary as blocks of 8 bits 00000000.00000000.00000000.00000000 8bits x 4 blocks = 32 bits
CURRENT ADDRESSING SYSTEM(IPV4)• Controlled by IANA - Internet Assigned Numbers Authority• 32 bit Internet Addressing System• Maximum Number of Address 2 ^ 32 Address = 4, 294, 967, 296 total Address• Address are further divided by Regions AFRINIC - African Internet Information Centre ARIN – American Registry for Internet Numbers APNIC – Asia-Pacific Network Information Centre RIPE NCC - Réseaux IP Européens Network Coordination Centre LACNIC - Latin America and Caribbean Network Information Centre Guyana Registry
PROBLEM?Internet began exponential growth.In 1996, foresight indicated that the internet will at some point run out of internet address.
SOLUTION?Build a bigger Internet Space ORFind ways to deal with the current one Subnetting CIDR Notation Netmasks Network Address Translation (NAT)
BETTER SOLUTION?Build a bigger Addressing SpaceInternet Protocol version 6 (IPv6)
ADOPTIONOn June 6th 2011, the world did a test run of IPv6.On June 6th 2012, IPv6 was officially launched, and some of the world top vendors are currently using it.Adoption is slow, but eventually we will all be migrated to IPv6How do you think this will affect us?
ENTER IPV6Larger Address System for Internet Address128 bit Addressing systemBuilt to accommodate 2^128 Addresss or 340,282,366,920,938,463,463,374,607,431,768,211,456 addresses 340 Trillion Trillion 79 trillion trillion more than IPv4 7 billion people on Earth / About 51 Trillion Trillion IP per perso on earth
FEATURES OF IPV6 Stateless Autoconfiguration Anycast neighbour discovery Plug and Play Multicast One to many broadcast
ADDRESSING 16 bit hexadecimal representation Blocks are seperated by colons ( : ) instead of dots . Hex is not case sensitive Zero in an address are almost meaningless and can be replaced by double colons (: : ) 2001:0db8:0000:130F:0000:0000:087c:140 B 2001:0db8:0:130F::087c:140B
ADDRESSING CONTINUEDCIDR Still exists Represented in IPv4 192.168.2.1/24 Represented in IPv6 2001:0db8:0:130F::087c:140B /48
IMPORTANT THINGSLoopback Address 127.0.0.1 – IPv4 ::1 or 0:0: 0:0:0:0:0:1 – IPv6Wildcard Address 0.0.0.0 – IPv4 :: or 0:0:0:0:0:0:0:0 – IPv6
CONCLUSION IPv6 address the exhaustion of internet address By providing a larger 128 bit addressing system instead of 32bits Or 3.4 Trillion Trillion Address IPv6 is much improved in quality of IP Addresses IPv6 Address are in hexadecimal 8 Blocks of 16 bits each Zeros in an IPv6 block is almost negligible IPv6 is currently official and occupies about 1% of the Internet.