Arista Networks (formerly Arastra) is an American computer networking company headquartered in Santa Clara, California. The company designs and sells multilayer network switches to deliver software-defined networking (SDN) for large datacenter, cloud computing, high-performance computing, and high-frequency trading environments. These products include 10/25/40/50/100 Gigabit Ethernet/200/400/800 low-latency cut-through switches, including the 7124SX, which remained the fastest switch using SFP+ optics through September 2012 with its sub-500 nanosecond (ns) latency, and the 7500 series, Arista's modular 10G/40G/100Gbit/s switch. Arista's Linux-based network operating system, Extensible Operating System (EOS), runs on all Arista products. Corporate history In 1982, Andy Bechtolsheim cofounded Sun Microsystems, and was its chief hardware designer. In 1995, David Cheriton cofounded Granite Systems with Bechtolsheim, a company that developed Gigabit Ethernet products, which was acquired by Cisco Systems in 1996. In 2001, Cheriton and Bechtolsheim founded another start up, Kealia, which was acquired by Sun in 2004. From 1996 to 2003, Bechtolsheim and Cheriton occupied executive positions at Cisco, leading the development of the Catalyst product line, along with Kenneth Duda who had been Granite Systems' first employee. In 2004, the three then went on to found Arastra (later renamed Arista). Bechtolsheim and Cheriton were able to fund the company themselves. In May 2008, Jayshree Ullal left Cisco after 15 years at the firm, and was appointed CEO of Arista in October 2008. In June 2014, Arista Networks had its initial public offering on the New York Stock Exchange under the symbol ANET. In December 2014, Cisco filed two lawsuits against Arista alleging intellectual property infringement., and the United States International Trade Commission issued limited exclusion and cease-and-desist orders concerning two of the features patented by Cisco and upheld an import ban on infringing products. In 2016, on appeal, the ban was reversed following product changes and two overturned Cisco patents, and Cisco's claim of damages was ruled against. In August 2018, Arista agreed to pay Cisco as part of a settlement that included a release for all claims of infringement by Cisco, dismissal of Arista's antitrust claims against Cisco, and a 5-year stand-down between the companies. In August 2018, Arista Networks acquired Mojo Networks. In September 2018, Arista Networks acquired Metamako and integrated their low latency product line as the 7130 series. In February 2020, Arista acquired Big Switch Networks. In October 2020, Arista acquired Awake Security. Arista's CEO, Jayshree Ullal, was named to Barron's list of World's Best CEOs