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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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Building a Virtual Layer 2 Network Using Ethernet over GRE

Building a Virtual Layer 2 Network Using Ethernet over GRE

In Figure 1-10, SwitchA connects to a branch Ethernet and SwitchB connects to a headquarters Ethernet. The headquarters and branch communicate over the IP/MPLS backbone network. The customer wants to transparently transmit Ethernet packets over a GRE tunnel, implementing Layer 2 communication between the headquarters and branch.

Figure 1-10  Ethernet over GRE application

To implement Layer 2 communication between the headquarters and branch, you can configure Ethernet over GRE on SwitchA and SwitchB. Create VE interfaces on SwitchA and SwitchB, add them to a VLAN, and bind them to a GRE tunnel. The VE interface sends Ethernet packets from the specified VLAN to the GRE tunnel, implementing Layer 2 communication between the headquarters and branch.

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Updated: 2019-04-08

Document ID: EDOC1100065751

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