GPON Solution Demonstrating VOLTHA Stack on RISC-V
summary
A working GPON OLT runs the open-source VOLTHA stack ported to RISC‑V on a Microchip PolarFire SoC, with the OLT MAC in the FPGA and control/DBA on the RISC‑V cores; software uses Microchip GPON SDK and Linux for Microchip. It sustains 2.5 Gbps downstream and 1.25 Gbps upstream, validates 8 ONUs (design for 128 ONUs supported), measures data-path recovery <1 minute and targets <3 minutes at 32 ONUs, while DBA on RISC‑V currently runs ~200 cycles/s and needs optimization for scaling — VOLTHA on RISC‑V is functional.
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chapters (6)
- 0:00Introduction to RISC-V in networking
- 2:28GPON technology overview
- 5:03PolarFire SoC for GPON OLT
- 10:24Integrating VOLTHA stack
- 13:55Challenges and future directions
- 15:38Key takeaways and conclusion
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