Chapter 5 Configuring Vxlan Bgp Evpn; Information About Vxlan Bgp Evpn; Introducing Ip Fabric Overlays (Vxlan) - Cisco Nexus 7000 Series Configuration Manual

Configuring VXLAN BGP EVPN
This chapter contains the following sections:
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Information About VXLAN BGP EVPN

Introducing IP Fabric Overlays (VXLAN)

Motivation for an overlay
An overlay is a dynamic tunnel that transports frames between two endpoints. In a switch-based overlay, the
architecture provides flexibility for spine switches and leaf switches.
• Spine switch table sizes do not increase proportionately when end hosts (physical servers and VMs) are
• The number of networks/tenants that can be supported in the cluster can be increased by just adding
How this is achieved is explained in detail later.
For easier reference, some common references are explained below:
Note
• End host or server refers to a physical or virtual workload that is attached to a ToR switch.
• A ToR switch is also referred as a leaf switch. Since the VTEP functionality is implemented on the
Information About VXLAN BGP EVPN, page 39
Configuring VXLAN BGP EVPN, page 56
Feature History for VXLAN BGP EVPN, page 62
added to the leaf switches.
more leaf switches.
ToRs, a VTEP refers to a ToR or leaf switch enabled with the VTEP function. Note that the VTEP
functionality is enabled on all leaf switches in the VXLAN fabric and on border leaf/spine switches.
C H A P T E R
Cisco Nexus 7000 Series NX-OS VXLAN Configuration Guide
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