Ipv6 addressing, Computer Network Security


IPv6 has 128-bit addresses. A 128-bit address adds network prefix and host suffix. An benefit of IPv6 addressing is that there is address classes i.e. prefix/suffix boundary may fall anywhere.


 Following are special kinds of addresses, IPv6 provides:


Unicast: It is used for single receiver computer.

Multicast: It is used for multiple receivers; possibly not at similar site.

Cluster: This kind of address is used for collection of devices with same prefix, datagram is send to one out of cluster.



128-bit addresses unwidely in dotted decimal; needs 16 numbers:


Groups of 16-bit numbers in hex differentiate by colons - colon hexadecimal.


69DC: 8864:FFFF: FFFF: 0:1280:8C0A:FFFF


Zero-compression - series of zeroes shown by two colons


FF0C: 0:0:0:0:0:0:B1



IPv6 address with 96 leading zeros is stopped to hold an IPv4 address.



Posted Date: 8/1/2012 9:28:40 AM | Location : United States

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