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Configuration Guide - VPN

S7700 and S9700 V200R013C00

This document describes the configurations of VPN, including GRE, IPSec, BGP/MPLS IP VPN, BGP/MPLS IPv6 VPN, VLL, PWE3, VPLS, L2VPN Access to L3VPN.
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VLL Access to the Public Network or L3VPN

VLL Access to the Public Network or L3VPN

In Figure 8-3, an enterprise uses a hierarchical networking mode, where the access network is a point-to-point L2VPN constructed using VLL and the bearer network is an MPLS L3VPN constructed using MPLS VPN. The enterprise wants to allow users to access the public network or L3VPN through VLL. To reduce the investment cost, the enterprise wants one device to complete both L2VPN termination and public network or L3VPN access.

Figure 8-3  Typical networking for VLL access to the public network or L3VPN

Two VE interfaces and their sub-interfaces (L2VE and L3VE) are created on the NPE, and the VE interfaces are bound to the same VE group. The L2VE sub-interface is used to terminate the L2VPN, and the L3VE sub-interface is used to connect to the public network or L3VPN. In this way, one device completes both L2VPN termination and public network or L3VPN access. This meets service requirements of the enterprise, lowers the networking cost, and simplifies the network.

Updated: 2019-04-08

Document ID: EDOC1100065751

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