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3-18
Cisco Nexus 7000 Series NX-OS Unicast Routing Configuration Guide, Release 4.x
OL-20002-02
Chapter 3 Configuring IPv6
Licensing Requirements for IPv6
Licensing Requirements for IPv6
The following table shows the licensing requirements for this feature:
Prerequisites for IPv6
IPv6 has the following prerequisites:
• You must be familiar with IPv6 basics such as IPv6 addressing, IPv6 header information, ICMPv6,
and IPv6 Neighbor Discovery (ND) Protocol.
• Ensure that you follow the memory/processing guidelines when you make a device a dual-stack
device (IPv4/IPv6).
Guidelines and Limitations for IPv6
IPv6 has the following guidelines and limitations and restrictions:
• IPv6 packets are transparent to Layer 2 LAN switches because the switches do not examine Layer
3 packet information before forwarding IPv6 frames. IPv6 hosts can be directly attached to Layer 2
LAN switches.
• You can configure multiple IPv6 global addresses within the same prefix on an interface. However,
multiple IPv6 link-local addresses on an interface are not supported.
• Because RFC 3879 deprecates the use of site-local addresses, you should configure private IPv6
addresses according to the recommendations of unique local addressing (ULA) in RFC 4193.
Configuring IPv6
This section includes the following topics:
• Configuring IPv6 Addressing, page 3-19
• Configuring IPv6 Neighbor Discovery, page 3-20
• Configuring IPv6 Packet Verification, page 3-23
Note If you are familiar with the Cisco IOS CLI, be aware that the Cisco NX-OS commands for this feature
might differ from the Cisco IOS commands that you would use.
Product License Requirement
NX-OS IPv6 requires no license. Any feature not included in a license package is bundled with the Cisco NX-OS
system images and is provided at no extra charge to you. For a complete explanation of the NX-OS licensing
scheme, see the Cisco NX-OS Licensing Guide.
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