It sounds like you're referring to the Juniper Research "Renewable Energy & 6G" (or similar) report — possibly with "REN" standing for Renewable Energy Networks, and "2" for the second edition or phase.
Body Paragraphs: Each focusing on a single point supported by evidence. juniper ren 2 link
Layer 2 Networking (The Data Link Layer): Juniper's Junos OS provides advanced "Link Layer" (Layer 2) features such as: It sounds like you're referring to the Juniper
set chassis redundancy graceful-switchover
set chassis redundancy routing-engine 0 master
set chassis redundancy routing-engine 1 backup
commit
If you want, I can:
Even though it's an internal link, Junos exposes it as a network interface: Edge (CE/PE) devices map customer VLANs to VNIs;
According to recent testing and documentation, the Juniper REN 2 Link provides: Exceptional Throughput : Consistently reaches speeds up to Low Latency : Optimized for performance-sensitive environments. Use Contexts Virtual Environments