Cisco Systems, Inc.is an American multinational technology conglomerate headquartered in San José, California, who develop, manufacture, networking hardware, telecommunications equipment, and other high-technology services and products. Through its numerous acquired subsidiaries, such as OpenDNS, WebEx, and Jasper, Cisco specialises in specific tech markets, such as the Internet of Things (IoT), domain security, and energy management.
Juniper Networks is an American multinational corporation headquartered in Sunnyvale, California that develops and markets networking products including routers, switches, network management software, network security products and software-defined networking technology.
Palo Alto Networks
Palo Alto Networks, Inc. is a network and enterprise security company based in Santa Clara, California. The company’s core products include advanced firewalls designed to provide network security, visibility and granular control of network activity based on application, user, and content identification and cloud-based offerings extending those firewalls to cover other aspects of security.
Arista Networks was founded to pioneer and deliver software-driven cloud networking solutions for large data centre and high performance computing environments. Arista's platforms, ranging in Ethernet speeds from 10 to 100Gbps, redefine scalability, agility and resilience.
Arista's Extensible Operating System (EOS) is the most advanced network operating system to enable open third party development. The software is built upon a stable, open source Linux core with a central state-oriented database that makes EOS inherently self-healing, in-service upgradeable and extremely robust.