Cisco Logo — Cisco Systems is a multinational company based in San Jose , ( California , USA ), mainly dedicated to the manufacture, sale, maintenance and consulting telecommunications equipment such as: connecting devices to networks: routers (routers, routers or routers), switches (switches) and hubs (hubs); security devices such as Firewalls and Concentrators for VPN ; IP telephony products such as phones and the CallManager (IP PBX); network management software like CiscoWorks , and equipment for storage area networks .

As of June 8, 2009, was considered one of the major companies in the technology sector and an important member of the market NASDAQ stock market or technology. After that date, thanks to his strength, he entered the industrial index Dow Jones . The company was founded in 1984 by Leonard Bosack marriage and Sandra Lerner, who were part of the computer staff of Stanford University . The company name comes from the word “San Francisco” looking out the front window was a sign that said “San Francisco” and a tree stood between the word separating San Fran Cisco, hence the name of the company. He began his deployment as a multinational company. Bosack adapted the software for multiprotocol routers originally written by William Yeager, another employee of computing at the university. Cisco Systems created the first router commercially successful.

Today, another giant that is trying to do is shadow the multinational Juniper Networks , the sale of bonds routers for backbone (spine).
In addition to developing its equipment hardware, Cisco Systems also works to develop its own management software and configuring them. Such software is known as IOS code and fully owner currently closed. Through the IOS is achieved by configuring Cisco equipment called “Command Line Interface” ( Command Line Interface , for its Spanish name) that serves as an interpreter between the user and the computer.

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