Cisco N7K-C7010 Configuration Guide - Page 265
Configuring IP Tunnels, Information About IP Tunnels, IP Tunnel Overview
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Send document comments to [email protected] 8 C H A P T E R Configuring IP Tunnels This chapter describes how to configure IP tunnels using Generic Route Encapsulation (GRE) on Cisco NX-OS devices. This chapter includes the following sections: • Information About IP Tunnels, page 8-1 • Licensing Requirements for IP Tunnels, page 8-3 • Prerequisites for IP Tunnels, page 8-4 • Guidelines and Limitations, page 8-4 • Default Settings, page 8-4 • Configuring IP Tunnels, page 8-4 • Verifying the IP Tunnel Configuration, page 8-10 • Configuration Examples for IP Tunneling, page 8-10 • Additional References, page 8-11 • Feature History for Configuring IP Tunnels, page 8-11 Information About IP Tunnels IP tunnels can encapsulate a same-layer or higher layer protocol and transport the result over IP through a tunnel created between two devices. This section includes the following topics: • IP Tunnel Overview, page 8-1 • GRE Tunnels, page 8-2 • Path MTU Discovery, page 8-3 • Virtualization Support, page 8-3 • High Availability, page 8-3 IP Tunnel Overview IP tunnels consists of the following three main components: OL-23435-03 Cisco Nexus 7000 Series NX-OS Interfaces Configuration Guide, Release 5.x 8-1