In Pictures: Critical milestones in Cisco history

Cisco: From its Catalyst 6500 Ethernet switch rollout to 2011's 'transformation,' the networking giant has a rich history

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1984

Cisco is founded in 1984 by Sandy Lerner and Len Bosack, two married Stanford computer operations staffers. Bosack and Lerner adapt multiprotocol router software written by William Yeager, another Stanford researcher, for the first Cisco product and operating system.

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In Pictures: Critical milestones in Cisco history

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