| 4 | Shadownet is designed to solve the problem of limited ProtoGENI backbone router resources. |
| 5 | By leveraging the logical router features of Juniper routers, we can dynamically create virtual routers as slivers. These virtual routers are then able to provide carrier-grade performance and services for our slices. |
| 6 | |
| 7 | The [http://www.juniper.net/us/en/products-services/routing/m-series/m7i/ Juniper M7i] "virtualizable" router has been deployed into the ProtoGeni backbone. |
| 8 | The Instrumentation Tools ([wiki:INSTOOLSSummary INSTOOLS]) software system has been adapted to support the monitoring and measuring of these virtual routers in the slice. |