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Configuration Guide - VXLAN

CloudEngine 12800 and 12800E V200R003C00

This document describes the configurations of VXLAN.
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Combinations of Underlay and Overlay Networks

Combinations of Underlay and Overlay Networks

A basic network on which a VXLAN tunnel is established is called underlay Network, whereas the service network carried by the VXLAN tunnel is called overlay network. In VXLAN scenarios, the following combinations of underlay and overlay networks are applicable.

Category

Definition

Example

IPv4 over IPv4

The overlay network and underlay network are both IPv4 networks.

As shown in Figure 3-3, the server IP and VTEP IP addresses are all IPv4 addresses.

IPv6 over IPv4

The overlay network is an IPv6 network, and the underlay network is an IPv4 network.

As shown in Figure 3-3, the server IP addresses are IPv6 addresses, and the VTEP IP addresses are IPv4 addresses.

IPv4 over IPv6

The overlay network is an IPv4 network, and the underlay network is an IPv6 network.

As shown in Figure 3-3, the server IP addresses are IPv4 addresses, and the VTEP IP addresses are IPv6 addresses.

IPv6 over IPv6

The overlay network and underlay network are both IPv6 networks.

As shown in Figure 3-3, the server IP and VTEP IP addresses are all IPv6 addresses.

Figure 3-3 Combinations of underlay and overlay networks
NOTE:

VXLAN implementation principles are similar in the preceding combinations of underlay and overlay networks. To make the description concise and clear, an IPv4 over IPv4 network is taken as an example for subsequent descriptions. For other types of network combination, only the implementation differences are described.

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Updated: 2019-05-05

Document ID: EDOC1100004207

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