Exploring IPv6 addressing link

what is IPV6? link

• like IPv4 this new address has a fromat of it own
• as you can recall an IPv4 address consist of 32 bits in length and can we written in deciaml notation for understanding
• an IPv6 address consist of 128 bits in length and is written in hexadecimal notation
• with 128 bits this allows IPv6 to scale to approximately 1 undecillion addresses
• An IPv6 address is made up of eight(8) hextets , each comprises of 16 bits and this means 8 X 16 = 128 bits in length
• Since Hexadedimal numbers are 0 1 2 3 4 5 6 7 8 9 A B C D E F (0 - f) each hextet ranges from 0000 - FFFF
• Lets atke a look at few IPv6 addresses - 2001:0DB8:0000:1111:0000:0000:0000:0200

Type of IPv6 addresses link

• Global Unicast

  • In IPv4 , we called an internet assigned address a public address
  • In IPv6 , we have a public address as well , however its known as a Global Unicast address , 2000::/3

• Link-local

  • An IPv6 link local address are in FE80::/10 network block
  • the link local address is used for local network communication only
  • this means there are two (2) IPv6 addresses on an interface 1 global unicast address for comminicatioon with devices within a local network

• Loopback

  • the link local address haas the same funcationality aas the link local address in the IPv4 address space

  • However in the IPv6 space the link local address ::1/128

  • this means only the fisrt bits is 1 in the entire address

  • unlike IPv4 the IPv6 link local address is a single address

• Unique local

  • this type of address has the similarity of a private address IPv4 address and is really limited to your network FC00::/7

• Anycast

  • This type of address is shared between multiple devices , however the transmission of a message is sent to the closet device based on geographic location

• Multicast

  • This address is used by a group devices
    • Aaassigned - FF0s::/8
    • Solicited Node - FF02::1:FF00:0000/104