CORD – Hardware Architecture PON OLT MACs Leaf-Spine Fabric PON OLT MACs 48-port, 1RU, I/O Board 1-‐4 5-‐8 9-‐12 13-‐16 17-‐20 21-‐24 25-‐28 29-‐32 33-‐36 37-‐40 41-‐44 45-‐48 Optical 10 GbE (Active) 1-‐12 Optical 10 GbE (Standby) 1-‐12 Back Panel Front Panel