High Quality Content by WIKIPEDIA articles! Arista Networks (previously Arastra) is a computer networking company headquartered in Santa Clara, California, USA. The company designs and sells network switches to deliver software defined cloud networking solutions for large datacenter, high-performance computing and high-frequency trading environments. Arista`s products include an array of 10 Gigabit Ethernet low-latency cut-through switches, including the 7124SX, which is currently the fastest switch using SFP+ optics with its sub-500ns latency, as well as the 7500 series, Arista’s award-winning modular 10Gbit/s switch. Arista`s own Linux-based network operating system, EOS (Extensible OS), runs on all Arista products.