> # Configuring IPv6 for Gigabit Ethernet Interfaces

> IP version 6 (IPv6) provides extended addressing capability beyond those provided in IP version 4 (IPv4) in Cisco MDS NX-OS. 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.

> Note For Cisco NX-OS features that use IP addressing, refer to the chapters in this guide that describe those features for information on IPv6 addressing support.

> Note To configure IP version 4 (IPv4) on a Gigabit Ethernet interface, see "Configuring IPv4 for Gigabit Ethernet Interfaces."

> This chapter includes the following topics:

> - Information About IPV6
> - Guidelines and Limitations
> - Default Settings
> - Configuring Basic Connectivity for IPv6
> - Additional References

> Copyright 2010-2013, Cisco Systems, Inc. All rights reserved.