IPV4 to IPV6: IPv6 Routing

I think everyone was thought about <strong>IPv4 and IPv6</strong> but on internet are tones of articles about IPv6 and IPv4 and you should read more to understand this concept.<br />
In this tutorial I will try to <strong>explain what is with IPv6 in few words</strong>.<br />
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<h2>
How does IPv6 looks like?</h2>
First you should know that ipv6 is different from ipv4.<br />
IPv4 Example: <code>81.21.211.234</code><br />
IPv6 Example: <code>2001:0db8:85a3:0042:1000:8a2e:0370:7334</code><br />
<h2>
Does I have IPv6?</h2>
Well, the correctly question is: I’m connected to internet via IPv4 or IPv6?<br />
Your IP is allocated by your internet provide, so they can give you an IPv4 or IPv6.<br />
<code>To check what kind of IP you are connected through you can go here</code>: <a href="http://ipv4-ipv6.blogspot.com/2014/07/i-think-everyone-was-thought-about-ipv4.html" rel="nofollow" target="_blank" title="Check IP Address - My IPv6 Address">Check IP Address – IPv4 or IPv6</a><br />
<h2>
Why IPv6?</h2>
Because the IPv4 have 32bits of address and can provide maximum 4.3 
billion addresses. So in the whole world this number of addresses has 
reached/will soon reached and we need more IP Addresses.<br />
IPv6 have 128 bits and support approximately 2<sup>128</sup> addresses.<br />
<h2>
Conclusion</h2>
You know a little but more about your connection and about your IP Addresses.<br />

<br />
If you want more you should go to Wikipedia and read more documentation.

Does I have IPv6? What is my IPv6? Why IPv6?

I think everyone was thought about IPv4 and IPv6 but on internet are tones of articles about IPv6 and IPv4 and you should read more to unde...

Routing concepts remain same in case of <a href="http://ipv4-ipv6.blogspot.com/" target="_blank">IPv6</a> but almost all routing 
protocol have been redefined accordingly.  We have seen in Communication
 in IPv6 segment, how a host speaks to its gateway.  Routing is a 
process to forward routable data choosing best route among several 
available routes or path to the destination.  A router is a device which
 forwards data which is not explicitly destined to it.<br />
There exists two forms of routing protocols<br />
<ul class="list">
<li><b>Distance Vector Routing Protocol</b>: A 
router running distance vector protocol advertises its connected routes 
and learns new routes from its neighbors.  The routing cost to reach a 
destination is calculated by means of hops between the source and 
destination.  A Router generally relies on its neighbor for best path 
selection, also known as “routing-by-rumors”.  RIP and BGP are Distance 
Vector Protocols.</li>
<li><b>Link-State Routing Protocol</b>: This protocol acknowledges 
the state of a Link and advertises to its neighbors.  Information about 
new links is learnt from peer routers.  After all the routing 
information has been converged, Link-State Routing Protocol uses its own
 algorithm to calculate best path to all available links.  OSPF and 
IS-IS are link state routing protocols and both uses Djikstra’s Shortest
 Path First algorithm.</li>
</ul>
Routing protocols can be divided in two categories:<br />
<ul class="list">
<li><b>Interior Routing Protocol</b>:  Protocols in 
this categories are used within an Autonomous System or organization to 
distribute routes among all routers inside its boundary.  Examples: RIP,
 OSPF.</li>
<li><b>Exterior Routing Protocol</b>:  Whereas an Exterior Routing 
Protocol distributes routing information between two different 
Autonomous Systems or organization.  Examples: BGP.</li>
</ul>
<h2>
Routing protocols</h2>
<ul class="list">
<li><b>RIPng</b><br />

RIPng stands for Routing Information Protocol Next Generation.  This 
is an Interior Routing Protocol and is a Distance Vector Protocol.  
RIPng has been upgraded to support IPv6.<br />

</li>
<li><b>OSPFv3</b></li>
Open Shortest Path First version 3 is an Interior Routing Protocol 
which is modified to support IPv6.  This is a Link-State Protocol and 
uses Djikrasta’s Shortest Path First algorithm to calculate best path to
 all destinations.<br />
<li><b>BGPv4</b><br />

BGP stands for Border Gateway Protocol.  It is the only open standard
 Exterior Gateway Protocol available.  BGP is a Distance Vector protocol
 which takes Autonomous System as calculation metric, instead of number 
of routers as Hop.  BGPv4 is an upgrade of BGP to support IPv6 routing.</li>
</ul>
<h2>
Protocols changed to support IPv6:</h2>
<br />
<ul class="list">
<li><b>ICMPv6</b>: Internet Control Message Protocol
 version 6 is an upgraded implementation of ICMP to accommodate IPv6 
requirements.  This protocol is used for diagnostic functions, error and
 information message, statistical purposes.  ICMPv6’s Neighbor Discovery
 Protocol replaces ARP and helps discover neighbor and routers on the 
link.</li>
<li><b>DHCPv6</b>: Dynamic Host Configuration Protocol version 6 is 
an implementation of DHCP.  Though IPv6 enabled hosts do not require any
 DHCPv6 Server to acquire IP address as they can be auto-configured.  
Neither do they need DHCPv6 to locate DNS server because DNS can be 
discovered and configured via ICMPv6 Neighbor Discovery Protocol.  Yet 
DHCPv6 Server can be used to provide these information. </li>
<li><b>DNS</b>: There has been no new version of DNS but it is now 
equipped with extensions to provide support for querying IPv6 addresses.
  A new AAAA (quad-A) record has been added to reply IPv6 query 
messages.  Now DNS can reply with both IP versions (4 & 6) without 
any change in query format.</li>
</ul>
<div>
<span style="background-color: #edf4ff; color: #888888; font-family: Arial, Helvetica, sans-serif; font-size: 13px;"><a href="http://ipv4-ipv6.blogspot.com/2014/07/ipv6-routing.html">http://ipv4-ipv6.blogspot.com/2014/07/ipv6-routing.html</a></span></div>
<div>
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IPv6 Routing

Routing concepts remain same in case of IPv6 but almost all routing protocol have been redefined accordingly. We have seen in Communicati...

Does I have IPv6? What is my IPv6? Why IPv6?

IPv6 Routing

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