The Cisco ASR 1006 Router in a 6-rack unit (RU) form factor is the most flexible edge routing solution in the Cisco ASR 1000 Series. It has the option of dual route processor and embedded services processor support with 10 Gbps throughput support. It also supports up to 12 shared port adapters (SPAs), which makes it the highest port density solution of the three Cisco ASR 1000 Routers.