6PE (IPv6 Provider Edge over MPLS) vs. 6VPE (IPv6 VPN Provider Edge over MPLS VPNs)
6PE (IPv6 over MPLS without VPNs):
Uses global IPv6 routingover MPLS.
No VPN instances (VRFs) are created on PEs.
IPv6 addresses cannot be reusedacross different CEs because all traffic is routed using a single global table.
6VPE (IPv6 over MPLS with VPNs):
Uses MPLS VPN (VRF instances) to provide IPv6 VPN services.
VPN instances (VRFs) are created on PEsto separate customer networks.
IPv6 addresses of CEs can be reusedin different VPN instances because each VRF maintains separate routing tables.
Correct Answer Explanation:
✅C. In 6VPE networking, IPv6 addresses of a CE can be reused.
Sinceeach VPN instance (VRF) maintains its own IPv6 routing table, IPv6 addresses of CEscan be reused across different VPNs.
Incorrect Answer Explanations:
❌A. In 6PE networking, VPN instances need to be created on PEs.
Wrong!6PEdoes not use VPN instances (VRFs); it relies on a global IPv6 routing table.
❌B. In 6PE networking, IPv6 addresses of a CE can be reused.
Wrong!Since 6PE uses asingle IPv6 global routing table, IPv6 addressescannot be reused.
❌D. In 6VPE networking, no VPN instance needs to be created on PEs.
Wrong!6VPErequires VPN instances (VRFs) on PEsto separate customer traffic.
Reference from Huawei HCIE-Datacom Documentation:
Huawei MPLS VPN Configuration Guide – 6PE and 6VPE Deployment
HCIE-Datacom Training Material – IPv6 MPLS Solutions
