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Configuration Guide - VPN

CloudEngine 12800 and 12800E V200R005C10

This document describes the configurations of VPN, including GRE, BGP/MPLS IP VPN, BGP/MPLS IPv6 VPN, VLL, PWE3, and VPLS.
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BGP/MPLS IPv6 VPN Extension

BGP/MPLS IPv6 VPN Extension

As IPv6 is becoming more prevalent, requirements for IPv6 interworking between VPN sites are increasing. BGP/MPLS IPv6 VPN extension enables IPv4 backbone networks to provide IPv6 VPN services for users. This solution is also called 6VPE.

Figure 2-30 shows the BGP/MPLS IPv6 VPN extension model. In this model, CE and PE devices on VPNs run IPv6 protocols, such as BGP4+, OSPFv3, IS-IS IPv6, and static IPv6 routing. However, because the backbone network runs IPv4 protocols, the PE devices must support both IPv4 and IPv6 protocols. On a PE device, the interfaces connected to CE devices run IPv6 protocols, and the interfaces connected to the backbone network run IPv4 protocols.

Figure 2-30 BGP/MPLS IPv6 VPN extension model

VPN-IPv6 routes are advertised on the backbone network through MP-BGP. MPLS labels are used to identify IPv6 packets. LSP tunnels are established on the backbone network to transmit private network data. Route advertisement, label distribution, and tunneling mechanism in BGP/MPLS IPv6 VPN are the same as those in BGP/MPLS IPv4 VPN.

Updated: 2019-04-03

Document ID: EDOC1100075353

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