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  • IPv6 - Address Types & Formats

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    IPv6 - Address Types & Formats

     

    Hexadecimal Number System

    Before introducing IPv6 Address format, we shall look into Hexadecimal Number System. Hexadecimal is a positional number system that uses base of 16.

     

     

     

     

    Global Unicast Address

     

     

    This address type is equivalent to IPv4’s public address. Global Unicast addresses in IPv6 are globally identifiable and uniquely addressable.

     

     

     

     

     

    Link-Local Address

     

    Auto-configured IPv6 address is known as Link-Local address. This address always starts with FE80. The first 16 bits of link-local address is always set to 1111 1110 1000 0000 (FE80). The next 48-bits are set to 0, thus:

     

     

     

     

    Unique-Local Address

     

    This type of IPv6 address is globally unique, but it should be used in local communication. The second half of this address contain Interface ID and the first half is divided among Prefix, Local Bit, Global ID and Subnet ID.

     

    Networking

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