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IPv6 Information:

IPv4 Exhaustion


 

Since the 1980s it has been apparent that the number of available IPv4 addresses is being exhausted at a rate that was not initially anticipated in the design of the network. This was the motivation for the introduction of classful networks, for the creation of CIDR addressing, and finally for the redesign of the Internet Protocol, based on a larger address format IPv6.

Today, there are several driving forces for the acceleration of IPv4 address exhaustion

  • Rapidly growing number of Internet users
  • Always-on devices — ADSL modems, cable modems
  • Mobile devices — laptop computers, PDAs, mobile phones

The accepted and standardized solution is the migration to IPv6. The address size in IPv6 was increased from 32 bits in IPv4 to 128 bits, providing a vastly increased address space that allows improved route aggregation across the Internet and offers large subnetwork allocations of a minimum of 264 host addresses to end-users. Migration to IPv6 is in progress but is expected to take considerable time.

Methods to mitigate the IPv4 address exhaustion are:

  • Network address translation (NAT)
  • Use of private networks
  • Dynamic Host Configuration Protocol (DHCP)
  • Name-based virtual hosting
  • Tighter control by Regional Internet Registries on the allocation of addresses to Local Internet Registries
  • Network renumbering to reclaim large blocks of address space allocated in the early days of the Internet

As of October 2010 predictions of exhaustion date of the unallocated IANA pool converge to between January 2011 and January 2012

More information on wikipedia

 


IPv6 Certification Project


The Hurricane Electric Certification tool will allow you to certify your ability to configure IPv6, and to validate your IPv6 servers configuration.

Through there test set you will be able to:

  • Prove that you have IPv6 connectivity
  • Prove that you have a working IPv6 web server
  • Prove that you have a working IPv6 email address
  • Prove that you have working forward IPv6 DNS
  • Prove that you have working reverse IPv6 DNS for your mail server
  • Prove that you have name servers with IPv6 addresses that can respond to queries via IPv6
  • Prove your knowledge of IPv6 techonologies through quick and easy testing

You will also demonstrate that you are familiar with IPv6 concepts such as:

  • the format of IPv6 addresses
  • AAAA records
  • reverse DNS for IPv6
  • the IPv6 localhost address
  • the IPv6 default route
  • the IPv6 documentation prefix
  • the IPv6 link local prefix
  • the IPv6 multicast prefix
  • how to do an IPv6 ping
  • how to do an IPv6 traceroute
  • common IPv6 prefix lengths such as /64, /48, /32
  • and more!

Users say that the Hurricane Electric Free IPv6 certification service is both entertaining and educational.

Go to http://ipv6.he.net/certification/ to start NOW!

Here is my IPv6 Certification Badge:

IPv6 Certification Badge for locutus

 



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