MPLS-based VPN

A traditional virtual private network (VPN) transmits private network data over a public network using tunneling protocols, such as the Generic Routing Encapsulation (GRE), Layer 2 Tunneling Protocol (L2TP), and Point to Point Tunneling Protocol (PPTP).

An MPLS-based VPN, which is as secure as Frame Relay networks, does not encapsulate or encrypt packets; therefore, IP Security (IPsec), GRE, or L2TP tunnels do not need to be deployed. The MPLS-based VPN helps minimize the network delay time.

The MPLS-based VPN connect different branches of the private network through LSPs to form a unified network, as shown in Figure 1. The MPLS-based VPN also supports interworking between different VPNs.

Figure 1 illustrates an MPLS-based VPN. The following devices are deployed on the MPLS-based VPN:

Figure 1 MPLS-based VPN

The principles of an MPLS-based VPN are as follows:

Copyright © Huawei Technologies Co., Ltd.
Copyright © Huawei Technologies Co., Ltd.
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