No relevant resource is found in the selected language.

This site uses cookies. By continuing to browse the site you are agreeing to our use of cookies. Read our privacy policy>Search

Reminder

To have a better experience, please upgrade your IE browser.

upgrade

Configuration Guide - VPN

S1720, S2700, S5700, and S6720 V200R010C00

This document describes the VPN configuration procedures and provides configuration examples.
Rate and give feedback:
Huawei uses machine translation combined with human proofreading to translate this document to different languages in order to help you better understand the content of this document. Note: Even the most advanced machine translation cannot match the quality of professional translators. Huawei shall not bear any responsibility for translation accuracy and it is recommended that you refer to the English document (a link for which has been provided).
Overview

Overview

Definition

Generic Routing Encapsulation (GRE) is a protocol that encapsulates packets of some network layer protocols, such as Internetwork Packet Exchange (IPX), IPv6, and AppleTalk. GRE allows encapsulated packets to be transmitted through a different network layer protocol, such as IPv4.

As a Layer 3 tunneling technology, GRE encapsulates packets of one protocol into packets of another protocol and transparently transmits them over tunnels. This enables packet transmission on heterogeneous networks.

Benefits

  • GRE is easy to implement and increases only a few loads on devices at both ends of a tunnel.

  • GRE sets up tunnels over an IPv4 network to connect networks running different protocols, reusing the original network structure and reducing costs.

  • GRE enlarges the operation scope of network protocols that support limited hop counts, allowing for flexible topologies on enterprise networks.

  • GRE connects discontiguous subnets and sets up virtual private networks (VPNs) to ensure secure connections between enterprise headquarters and branches.

Translation
Download
Updated: 2019-08-21

Document ID: EDOC1000141944

Views: 109766

Downloads: 586

Average rating:
This Document Applies to these Products
Related Documents
Related Version
Share
Previous Next