The Internet is rapidly becoming an electronic agent for commerce, entertainment, communication, and information retrieval. New network-enabled intranet applications and powerful desktop computers are driving an exponential increase in network traffic. Service providers and enterprises are rapidly deploying packet-switching infrastructures to handle this tremendous growth in data traffic.The Cisco 12000 series gigabit switch router (GSR) is the premier routing product family from Cisco designed and developed for the core of service provider and enterprise IP backbones. The Cisco 12000 GSR family includes three models: the Cisco 12008, 12012 and 12016.This model comes with 10-Gbps switch fabric (320-Gbps switching system bandwidth).