Specifications

CHAPTER
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Cisco Nexus 3000 Series NX-OS Unicast Routing Configuration Guide, Release 5.0(3)U2(2)
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Configuring Layer 3 Virtualization
This chapter describes how to configure Layer 3 virtualization.
This chapter includes the following sections:
• Layer 3 Virtualization, page 11-1
• Licensing Requirements for VRFs, page 11-5
• Prerequisites for VRF, page 10-6
• Guidelines and Limitations, page 11-5
• Default Settings, page 11-6
• Configuring VRFs, page 11-6
• Verifying the VRF Configuration, page 11-13
• Configuration Examples for VRF, page 11-13
• Related Topics, page 11-14
• Additional References, page 11-14
• Feature History for VRF, page 11-14
Layer 3 Virtualization
This section includes the following topics:
• Overview of Layer 3 Virtualization, page 11-1
• VRF and Routing, page 11-2
• VRF-Aware Services, page 11-3
Overview of Layer 3 Virtualization
Cisco NX-OS supports virtual routing and forwarding instances (VRFs). Each VRF contains a separate
address space with unicast and multicast route tables for IPv4 and makes routing decisions independent of
any other VRF.