NS8420 is an open network core switch for hyperscale data centers. The compact 4RU fixed box device offers 128 full-rate 400GbE ports. Paired with the S8130 TOR switch, it supports next-gen data center and cloud computing Leaf-Spine three-tier architecture. With advanced hardware-software decoupling, it delivers line-rate, non-blocking high-performance forwarding (up to 51.2T capacity). Pre-installed with ONIE, it supports compatible NOS, including open-source Sonic and commercial options.