Cisco Systems, Inc. ( , hkse: 4333) is a multinational corporation with more than 66,000 employees and annual revenue of US$39 billion as of 2008. Headquartered in San Jose, California, it designs and sells networking and communications technology and services.

Corporate history

While Cisco was not the first company to develop and sell a router, it was one of the first to sell commercially successful routers supporting multiple network protocols. As the Internet Protocol (IP) became widely adopted, the importance of multi-protocol routing declined. Today, Cisco's largest routers are primarily used to deliver a multitude of technologies through corporate, enterprise, and service provider networks. Some of the more notable technologies and protocols are IP, MPLS, Frame Relay and SONET.

In 1990, the company was listed on the Nasdaq stock exchange. Lerner was fired and because of that, Bosack quit but not before receiving $200 million. Most of those profits were given to charities and the two later divorced.

Cisco acquired a variety of companies to bring in talent and innovation into the company. Several acquisitions, such as Stratacom, were the biggest deals when they happened. During the Internet boom in 1999, the company acquired Cerent Corp., a start-up company located in Petaluma, California, for about US$7 billion. It was the most expensive acquisition made by Cisco at that time. Since then, only Cisco's acquisition of Scientific-Atlanta has been bigger. Although not every acquisition is successful, Cisco has more frequently succeeded in integrating and growing the revenue of its acquisitions than its competitors. Several acquired companies have grown into $1Bn+ business units for Cisco in LAN switching, Enterprise VOIP, and home networking.

In late March 2000, at the height of the dot-com boom, Cisco was the most valuable company in the world, with a market capitalization of more than US$500 billion. In April 2009, with a market cap of about US$104 billion, it is still one of the most valuable companies. CISCO was voted stock of the decade on NASDAQ. The company's 7500 Series router was voted 3rd in the product of the decade 1990-2000 behind the Mosaic web browser and the Novell LAN manager.

Cisco has made inroads into many network equipment markets outside routing, including Ethernet switching, remote access, branch office routers, ATM networking, security, IP telephony, and others. In 2003, Cisco acquired Linksys, a popular manufacturer of computer networking hardware and positioned it as a leading brand for the home and end user networking market (SOHO).

The company's first two CEOs are John Morgridge and John Chambers (active). The Corporate Headquarters is on East Tasman Drive in San Jose, California, between Zanker Road and Cisco Way.