Information About Layer 3 Interfaces - Cisco 7604-RSP720C-R Configuration Manual

S e n d d o c u m e n t c o m m e n t s t o n e x u s 7 k - d o c f e e d b a c k @ c i s c o . c o m
Configuring Layer 3 Interfaces
This chapter describes how to configure Layer 3 interfaces for Cisco NX-OS devices
This chapter includes the following sections:
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Information About Layer 3 Interfaces

Layer 3 interfaces forward IPv4 and IPv6 packets to another device using static or dynamic routing
protocols. You can use Layer 3 interfaces for IP routing and inter-VLAN routing of Layer 2 traffic.
You cannot configure a shared interface as a Layer 3 interface. See the Cisco NX-OS FCoE
Configuration Guide for Cisco Nexus 7000 and Cisco MDS 9500 for information on shared interfaces.
Beginning with Cisco Release 5.2(1), you can configure a Fabric Extender (FEX) port as a Layer 3
interface for host connectivity, but not for routing. See the Configuring the Cisco Nexus 2000 Series
Fabric Extender for more information on fabric extenders.
This section includes the following topics:
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OL-23435-03
Information About Layer 3 Interfaces, page 4-1
Licensing Requirements for Layer 3 Interfaces, page 4-5
Guidelines and Limitations, page 4-5
Default Settings, page 4-6
Prerequisites for Layer 3 Interfaces, page 4-5
Configuring Layer 3 Interfaces, page 4-6
Verifying the Layer 3 Interfaces Configuration, page 4-16
Monitoring Layer 3 Interfaces, page 4-17
Configuration Examples for Layer 3 Interfaces, page 4-18
Related Topics, page 4-18
Additional References, page 4-18
Feature History for Configuring Layer 3 Interfaces, page 4-19
Routed Interfaces, page 4-2
Subinterfaces, page 4-2
VLAN Interfaces, page 4-3
Loopback Interfaces, page 4-4
C H A P T E R
Cisco Nexus 7000 Series NX-OS Interfaces Configuration Guide, Release 5.x
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