IP v6

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IPV6(Internet Protocol Version-6)

IETF(International Engineer Task Force)- IETF is a organization that design IP Address. After That it provide that Ip Address to other organization.
IANA(Internet Assigned Number Authority)- It is an organization that distribute the IP to RIR(Regional Internet Registry). IETF provide the IPv4 tender to IANA to distribute that IP.
ICANN(Internet Corporation for Assigned Network Number)-It is a organization that distribute Ipv6 to RIR. IETF provide the IPv6 tender to ICANN to distribute that IP.
RIR(Regional Internet Registry)- It provide the IPv6 to Asia or Africa zone or  ISP.
Example-
    
 2000:0030:305A:3CB1:0000:3B9A:0000:353A
__________________    ___________________
    Network ID                                 Host ID
Note- Ipv6 divide 8 blocks and each block contain 16 bit so Total bit of IPv6 is 128 bit and it is formed in Hexadecimal format. And Each block separated (:) symbol. One Block is contain 4 HexaDecimal Code like 2000, so total 32 Hexa Decimal codes (4x8Block).
Example- 2 0 0 0 :………
0010  0000  0000 0000 : (So in this format we open the Ipv6 address)
In which format we write down the Ipv6-
2 0 0 0 : 0 0 0 0 : 0 0 0 0 : 0 0 5 A : 3 C 0 0 : 0 0 0 0 : 0 0 0 0 : 0 0 0 0
OR
2 0 0 0 : 0 : 0 : 5 A : 3 C 0 0 : 0 : 0 : 0
OR
2 0 0 0 : : 5 A : 3 C 0 0 : 0 : 0 (ONLY SINGLE TIME WE CAN USE ( : : ) SYMBOL)
OR
2 0 0 0 : 0 : 0 : 5 A : 3 C 0 0 : :

Example-
2000:0001:003A:004C:0000:0000:0000:0001
------------------------           -------------------------
     Network ID                          Host ID
2000:0001:003A:004C:0000:0000:0000:0002
                                                                                |
                                                                                |
2000:0001:003A:004C:0000:0000:0000:000F
                                                                               |
2000:0001:003A:004C:FFFF:FFFF:FFFF:FFFF (All Host IP host communicate with each other)

Note-  0 : 0 : 0 : 0 : 0 : 0 : 0 : 1 (It Is Loop Back IP)

Note-FE80 : ----------------------
          FE90 : ----------------------     ( These are the Used for Link Local Address/ APIPA address used for )
          FEA0 : ----------------------
          FEB0 : ----------------------

Note- FF02 : --------------------  ( This range is use for MultiCast IP range )

Note-   2 0 0 0  :  0 0 0 1  :  0 0 3 C  :  0 0 0 0  :  0 0 0 0  :  0 0 0 0  :  0 0 0 0  :  0 0 0 0 (reserve for ICANN, …)
            ICANN         RIR       ISP      SUBNETTING-----------------HOST------------------------

Note- So In the IPv6 there is no need of Subnetting “OR” BroadCast IP Address.

Ipv6 Address types
Ipv6 currently defines three types of addresses: Global Addresses,Link local addresses and unique local addresses
Global Addresses:
                                        Global addresses are equivalent to public ipv4 addresses and can be used over ipv6 interenet.The address prefix for the global address  is 2000::/3,which translates to a first block value between 2000-3fff in the usual hexadecimal notation.A n example of GA is 2001:db8:21da:7:713e:a426:d167:37ab.
Link Local Addresses:
                                        Link local addresses are similar to automatic private IP addressing (APIPA) addresses (169.254.0.0/16) in ipv4 in that they are self configured ,nonroutable addresses only used for communication in local subnet.LLAs always begin with “fe80”. An example of LLa is fe80::154d:3cd7:b33b:1bc1.
Unique Local addresses:
                                               Unique local addresses are the ipv6 equivalent of private addresses in ipv4.These addresses are routable between subnets on private network but are not routable on the public internet.Such addresses begin with “fd”.An example of ULA is fd65::1234.
Technology used for communication between ipv4 and ipv6 networks:
ISATAP:
                  Intra Site Automatic Tunneling Addressing Protocol. ISATAP is a tunneling protocol that allows an ipv6 network to communicate with ipv4 network through an ISATAP router. ISATAP is intended for use within a private network.
6to4:
             6to4 is a protocol that tunnels ipv6 traffic over ipv4 traffic through 6to4 routers . 6to4 clients have their router’s ipv4 address embedded in their ipv6 address and do not require ipv4 address. Whereas ISATAP is primarily intended for intranets, 6to4 is intended to be used on internet . You can use 6 to4 to connect to ipv6 portions of the internet through a 6to4 relay even if your intranet or your ISP supports only ipv4.
Teredo:
                        Teredo is a tunneling protocol that allows clients located behind an ipv4 NAT device to use ipv6 over internet . Teredo is used only when no other ipv6 transition technology is available

Location: Pune, Maharashtra, India

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