The ASR 9000 Series Aggregation Services Routers provide unsurpassed 10 Gigabit Ethernet and 100 Gigabit Ethernet scale and density. The Cis ASR 9000 and ASR 9900 Series Routers provide an in-place upgrade roadmap to a higher density of 10 Gigabit Ethernet and 100 Gigabit Ethernet ports without the need for a complete chassis replacement. These line cards, offered in base and extended-scale configurations, are complemented by the nonblocking fabric (on the RSP for the Cis ASR 9006, ASR 9010, ASR 9906, ASR 9910 and ASR 9904 Routers and on separate fabric cards for the Cis ASR 9906, ASR 9910, ASR 9912 and ASR 9922 Routers), and by the innovative backplane, thermal, and power infrastructure on the chassis.