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| Image Source: Webtorial.com |
This article is going to deal with revolutionary new era
of networking with IPv6 and what it will going to impact on old devices.
IPv6 doesn’t need
any introduction to you intelligent people. Still I will remind you the
previous version of IP was IPv4 that was out of number and finished year
before. No more scope lie with IPv4 in this era where everyone has mobile
internet, home security system and Car GPS connected with Internet. IPv6 is to
deploy strongly to keep networking grow exponentially.
Why we need IPv6?
As already
mentioned, IPv4 had very limited number of scope as compare to today’s and
tomorrow’s expectation of internetworking. You can see what’s happening on internet in 60 second and predict the future.
All future internet devices can’t be have unique IP with 32bit IPv4 which have
only 6.93 billion address.
Looking at IPv6 we
have 128bit of address and with about 50 octillions address (49,102,794,649,486,069,763,834,719,687)
for every individual on earth. I think this is called infinite possibilities
where every device on earth can be connected with internet with lots more free
spaces. What you say?
The Main reason of
being its infinite are:
>> It is
having 128 bit addressing while IPv4 has only of 32 bit.
>> It can
have alpha numeric value while IPv4 has only numbers 0-255 per 8 bit.
Moving from IPv4 to IPv6
Whatever IPv4 address
you are using are provided by ISP again and again and scrap addresses. So you
don’t have future in IPv4. IPv6 is having completely new scope to transfer data
than that of IPv4. How both devices will be compatible for communication?
Answer is NAT, also called Network Address Translation, is now being deployed
inside every NIC (Network Interface Card)/Routers/Modem these days to survive
in future.
Not only this,
Firewall needs to be create Filters again, if you are using the old network
devices, their manufacturer have already developed firmware for IPv6, all you
need to Update your Firmware for future ready internet.
Also for browsers
it pain to opt a choice between IP and Port number. Since in previous IP
version, colons were used to separate the IP with its Port number like http://192.168.9.108:443 i.e http://ipv4-address:22
But IPv6 have
already colons to separate address itself. So for browsers, one need to separate
the IP in Square braces and port number can easily add as usual. Like http://[Ipv6-address]:/21
When to switch to IPv6
In 2011-2012 Most
of the ISPs have already switched to IPv6, if your ISP hasn’t switched yet,
this will cause no problem. In case of ISP is serving IPv6 and many of users
have still IPv4 there will be need of protocol called dual stack which will
with NAT and system translation.
Even if the
hardware of the site/server you are using is having IPv6 and you are using IPv4,
another protocol called tunnel protocol (6 to 4 tunnel) and vice versa, also
deployed to make the both generation flexible enough.
Are you ready to move?
If you are having
new devices like, NIC, Router, or Modem, you are already have IPv6 ready
device. You can check it in your Windows/Linux
In Windows open up
your command prompt
Type Ipconfig
And you should see
the detailed listing of IPv6 as well as Ipv4 address if you are connected to IPv6
enabled network.
Similarly in
Linux/Unix system you can type
Ifconfig
And see if you have
IPv6 address there.
How safe you are With IPv6?
You should know
current IPv4 are dynamic in nature that changes as new connection or re-start
of modem/router. Also for large organization sub netting provides a completely
isolated address for home network as well as for external network that make
outside thread to opaque your personal identity.
In case of IPv6,
all the internet compatible devices can have fixed address so fine trackers may
know your browsing profile. To avoid this “Privacy
Extensions for Stateless Address
Auto configuration”
Also many mobile
platform like Android, don’t have ability to change the IP address on IPv6
except iOS. Apple has such arrangement after iOS in iPhone 4 3GS onward. But
newer android devices have such ability and you are secure from data miners as
in IPv4.
How to identify your IPv6 network?
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2001: For direct
internet connection of device/NIC/Router/Modem
2002: This means IPv6
data is tunneled in IPv4 protocol may be your ISP or you have not switched
over yet.
Fd00: this stand for
unique local address, your router won’t display it out of your network.
Fe80: DHCP enabled
connection used locally not over internet connection.
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Bottom line
I think I have
covered all basics aspect of IPv6, I love to answer you any question or love if
you add some more points if I missed something. Also don’t forget to share with
your friends.
Have nice time.
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