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    <title>Information About IPV6 </title>
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<a name="wp1077412"> </a><h1 class="pTitle">
Information About IPV6

</h1>
<a name="wp1072872"> </a><p class="pBody">
IP version 6 (IPv6) provides extended addressing capability beyond those provided in IP version 4 (IPv4) 
in Cisco MDS NX-OS by quadrupling the number of network address bits from 32&#160;bits (in IPv4) to 
128&#160;bits. The architecture of IPv6 has been designed to allow existing IPv4 users to transition easily to 
IPv6 while providing services such as end-to-end security, quality of service (QoS), and globally unique 
addresses.

</p>
<a name="wp1072875"> </a><p class="pBody">
IPv6 provides the following enhancements over IPv4:

</p>
<div class="pSmartList1"><ul class="pSmartList1">
<a name="wp1072876"> </a><li class="pSmartList1">Allows networks to scale and provide global reachability. 
</li>
<a name="wp1072877"> </a><li class="pSmartList1">Reduces the need for private address and network address translation (NAT).
</li>
<a name="wp1072878"> </a><li class="pSmartList1">Provides simpler autoconfiguration of addresses.
</li>
</ul></div>
<a name="wp1072879"> </a><p class="pBody">
This section describes the IPv6 features supported by Cisco MDS NX-OS and includes the following 
topics:

</p>
<div class="pSmartList1"><ul class="pSmartList1">
<a name="wp1072911"> </a><li class="pSmartList1"><a href="ipv603.html">Extended IPv6 Address Space for Unique Addresses</a>
</li>
<a name="wp1072915"> </a><li class="pSmartList1"><a href="ipv604.html">IPv6 Address Formats</a>
</li>
<a name="wp1072919"> </a><li class="pSmartList1"><a href="ipv605.html">IPv6 Address Prefix Format</a>
</li>
<a name="wp1072923"> </a><li class="pSmartList1"><a href="ipv606.html">IPv6 Address Type: Unicast</a>
</li>
<a name="wp1072927"> </a><li class="pSmartList1"><a href="ipv610.html">IPv6 Address Type: Multicast</a>
</li>
<a name="wp1072931"> </a><li class="pSmartList1"><a href="ipv611.html">ICMP for IPv6</a>
</li>
<a name="wp1072935"> </a><li class="pSmartList1"><a href="ipv612.html">Path MTU Discovery for IPv6</a>
</li>
<a name="wp1072939"> </a><li class="pSmartList1"><a href="ipv613.html">IPv6 Neighbor Discovery</a>
</li>
<a name="wp1072943"> </a><li class="pSmartList1"><a href="ipv615.html">Router Discovery</a>
</li>
<a name="wp1072947"> </a><li class="pSmartList1"><a href="ipv616.html">IPv6 Stateless Autoconfiguration</a>
</li>
<a name="wp1072951"> </a><li class="pSmartList1"><a href="ipv617.html">Dual IPv4 and IPv6 Protocol Stacks</a>
</li>
<a name="wp1075379"> </a><li class="pSmartList1"><a href="ipv618.html">IPv6 Addressing and Enabling IPv6 Routing</a>
</li>
<a name="wp1075479"> </a><li class="pSmartList1"><a href="ipv619.html">Transitioning from IPv4 to IPv6</a>
</li>
</ul></div>
<hr /><br><p class="pBody">Copyright 2010-2013, Cisco Systems, Inc. All rights reserved.</p> 

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