Cisco 12000 Series Gigabit Switch Routers
The Cisco 12000 series Gigabit Switch Routers (GSR) is a new product class of routers that perform Internet routing and switching at gigabit speeds. The Cisco 12012 and Cisco 12008 meet the exponential growth in demand for Internet bandwidth and bring scalability and high-performance services to IP-based networks. Designed to meet current and future Internet traffic requirements, the Cisco 12000 series initially supports IP backbone links at OC-3/STM-1 (155 Mbps) and OC-12/STM-4 (622 Mbps)--facilities up to four times faster than those used today.
The Cisco 12000 series is built around a high-speed switching fabric that provides nonblocking bandwidth to support high-performance IP-based LANs and WANs. The switching fabric is scalable from 15 to 60 Gbps on the Cisco 12012 and from 10 to 40 Gbps on the Cisco 12008. Both the Cisco 120012 and Cisco 12008 support IP over SONET/SDH and ATM interfaces.
The Cisco 12012 has 12 user-configurable slots, and the Cisco 12008 has eight user-configurable slots. These slots contain line cards and Gigabit Route Processor (GRP). Network interfaces reside on line cards that provide connection between the router's switch fabric and the external networks.
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