Hi every body!
I have few questions about ipv6.
My book says" The address assignment strategy for ipv6 is elegant but simple and can be roughly summarized as follows:
1) Public ipv6 address are grouped( numerically) by major geographically region.
Does any one know what ipv6 address is assigned to which region?
Did we not do the same thing for IPv4 address assignment i.e ipv4 prefix is assigned to each region?
Thanks a lot!
given the great space available a strict multi level hierarchical addressing has been implemented in IPv6.
The unicast global aggregatable addresses are the public addresses for ipv6.
The addressing plan has been built in such a way that 8192 routes are enough to describe the full IPv6 routing table.
This has been achieved by dividing the subspace of global aggregatable unicast addresses between the Regional Internet Registry offices (ARIN, RIPE, APNIC and the others).
And the more modern and current standard is here:
0101 can be written as :101
a : is a separator between a group of 4 hexadecimal digits.
so :0101: can only be shortened to :101
:1:1 = 0001:0001 so it is a different thing.
:0000: can be written as :0:
only once is allowed to shorten multiple consecutive 4 0000 groups of hex digits as ::
Only once otherwise it is not possible to expand it in a single ipv6 address
Hope to help