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Cisco Nexus 3000 Series NX-OS Unicast Routing Configuration Guide, NX-OS Release 5.0(3)U1(1)
Chapter2 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). By default, Cisco NX-OS places you
in the default VRF unless you specifically configure another VRF. For more information, see Chapter 9,
“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:
• IPv4 can only be configured on Layer 3 interfaces.
Guidelines and Limitations
IPv4 has the following configuration guidelines and limitations:
• You can configure a secondary IP address only after you configure the primary IP address.
Default Settings
Table 2-1 lists the default settings for IP parameters.
Product License Requirement
Cisco NX-OS IPv4 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 Cisco NX-OS
licensing scheme, see the Cisco NX-OS Licensing Guide.
Table 2-1 Default IP Parameters
Parameters Default
ARP timeout 1500 seconds
proxy ARP disabled
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