User Manual - Configuration Guide (Volume 3)

Chapter 1

Versatile Routing Platform

VPN Overview

Extranet VPN means that the VPN extends Intranet to partners and clients through VPN, so that different enterprises can build their VPNs through public networks.

IV. According to networking model

1)Virtual Leased Line (VLL)

VLL simulates the conventional leased line service, i.e., simulating the leased line with IP network and providing asymmetrical and inexpensive “DDN” service. For the users at both ends of VLL, the VLL is equivalent to the previous leased line.

2)Virtual Private Dial-up Network (VPDN)

In VPDN, VPN is implemented with dial-up and access services (ISDN PSTN) of public network, which provides access service for enterprises, mini ISPs and mobile offices.

3)Virtual Private LAN Segment (VPLS) service

In VPLS, LANs can interconnect through virtual private network segment, which is the extension of LAN across IP public network.

4)Virtual Private Route Network (VPRN) service

There are two types: one is the VPRN, using with such conventional VPN protocols as IPSec and GRE, and the other is VPN in MPLS mode.

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Huawei v200r001 user manual IV. According to networking model