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Arista Networks was founded and incorporated in 2008, evolving from its roots in Arastra, established in 2004. Arista went public as ANET in 2014 and entered the S&P 100 in 2026 and was recognized on the 2026 Fortune 500 list of the largest United States corporations by revenue. It provides cloud and AI high performance networking. Members of Arista’s leadership team have experience in networking and innovation.
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 was dismissed. In August 2018, Arista agreed to pay Cisco US$ 400 million 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 its 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 in 2018 and 2019.
In August 2022, Arista Networks acquired Pluribus Networks, a unified cloud network company, for an undisclosed sum.
In July 2025, Arista expanded its AI-driven campus and branch networking offerings and acquired the VeloCloud SD-WAN portfolio from Broadcom. This combination of innovations has the potential to bring operational ease through zero touch operations, proactive monitoring, and automated troubleshooting across the broad set of client-to-cloud networking domains.
Jayshree Ullal was named on the Fortune Most Powerful Women 2026 list.