List of acquisitions by Cisco

[2] Following the first Cisco takeover purchase, acquisitions have constituted 50 percent of the company's business activity.

[3] Cisco's previous largest acquisition was tied between Cerent Corporation and Scientific Atlanta for $6.9 billion in 1999 and 2005 respectively.

[6] Most of the companies acquired by Cisco are related to computer networking, with several LAN switching and Voice over Internet Protocol (VoIP) companies included in the list of acquisitions.

The value of each acquisition is listed in the US$ currency because Cisco Systems is headquartered in California, U.S.

The majority of its products and business units have come from acquisitions, with Cisco Systems spending more than $70 billion to acquire approximately 218 organizations as of October 2021.