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NX-OS and Cisco Nexus Switching: Next-Generation Data Center Architectures, Second Edition by Matthew McPherson, David Jansen, Ron Fuller

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Chapter 11. Overlay Transport Virtualization (OTV)

This chapter covers the following topics:

• Introduction to OTV

OTV terminology and concepts

OTV control plane

• OTV data plane

Multihoming with OTV

OTV and ARP

• FHRP localization

• Ingress routing optimization

Overlay Transport Virtualization (OTV) is an IP-based innovation to provide a Layer 2 extension between data centers. OTV is transport agnostic, meaning that the transport infrastructure between data centers can be dark fiber, MPLS, IP routed WAN, ATM, Frame Relay, and so on. The only requirement is that the data centers must have IP reachability between them. OTV enables multipoint services for Layer 2 extension and independent Layer 2 domains between data centers, preserving ...

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