Cisco Nexus 7000 Series - Virtualization Support

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Cisco Nexus 7000 Series NX-OS Unicast Routing Configuration Guide, Release 4.x
OL-20002-02
Chapter 2 Configuring IPv4
Licensing Requirements for IPv4
Note ICMP redirects are disabled on interfaces where the local proxy ARP feature is enabled.
Virtualization Support
IPv4 supports Virtual Routing and Forwarding instances (VRFs). VRFs exist within virtual device
contexts (VDCs). By default, Cisco NX-OS places you in the default VDC and default VRF unless you
specifically configure another VDC and VRF. For more information, see the Cisco NX-OS Virtual Device
Context Configuration Guide and see Chapter 14, “Configuring Layer 3 Virtualization.”
Licensing Requirements for IPv4
The following table shows the licensing requirements for this feature:
Prerequisites for IPv4
IPv4 has the following prerequisites:
• Can only be configured on Layer 3 interfaces.
Guidelines and Limitations
IPv4 has the following guidelines and limitations and restrictions:
• You can configure a secondary IP address only after you configure the primary IP address.
Configuring IPv4
This section includes the following topics:
• Configuring IPv4 Addressing, page 2-7
• Configuring Multiple IP Addresses, page 2-8
• Configuring a Static ARP Entry, page 2-9
• Configuring Proxy ARP, page 2-10
• Configuring Local Proxy ARP, page 2-11
• Configuring IP Packet Verification, page 2-13
• Configuring IP Directed Broadcasts, page 2-14
Product License Requirement
NX-OS IP 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.