CHAPTER
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9-1
Cisco Nexus 3000 Series NX-OS Unicast Routing Configuration Guide, NX-OS Release5.0(3)U1(1)
9
Configuring Layer 3 Virtualization
This chapter describes how to configure Layer 3 virtualization.
This chapter includes the following sections:
• Layer 3 Virtualization, page 9-1
• Licensing Requirements for VRFs, page 9-5
• Prerequisites for VRF, page 10-6
• Guidelines and Limitations, page 9-5
• Default Settings, page 9-6
• Configuring VRFs, page 9-6
• Verifying the VRF Configuration, page 9-12
• Configuration Examples for VRF, page 9-12
• Related Topics, page 9-13
• Additional References, page 9-13
• Feature History for VRF, page 9-14
Layer 3 Virtualization
This section includes the following topics:
• Overview of Layer 3 Virtualization, page 9-1
• VRF and Routing, page 9-2
• VRF-Aware Services, page 9-3
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.
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