IPv6 - MPLS migration with 6PE
In our recent CCDE study group meeting, we covered 6PE (IPv6 Provider Edge). This method integrates IPv6 into an IPv4 MPLS network. Yet, we were unsure of its operation and use. To clarify, I set up an EVE-NG environment and ran a lab test. The key point is that 6PE setups do not use VRFs on PE routers. Instead, they place all CEs in the global routing table. VRFs help isolate customer traffic. This setup prevents unauthorized interference. In L3VPN networks, people usually combine VRFs with MPLS and MP-BGP. But why would you use 6PE in your MPLS network? Your core MPLS network is running IPv4 only, and you cannot change it that easy. You might not need traffic segmentation. You deliver internet service via global routing table to the customers So for a better understanding, let's check the lab topology. We have our IPv4 MPLS network, which uses OSPFv2 as underlay routing and LDP for label exchange. On top, we're running BGP between the loopback IPs of the PE routers. P-Router ...
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