Networking

There exist three primary networks that are accessible by experimenters in COSMOS. Device connections to these networks are determined by the number of interfaces and their maximum bandwidth. Every device has at least a connection to the Control Plane. Then depending on the number of additional interfaces, the device may have a connection to either one or both of the Data Planes. Please see the device specific pages for more detailed information.

Control Plane

The control plane is a physically separate network designed to facilitate infrastructure control and user access to end devices. The control plane network runs on top of Dell S4048-ON switches providing up to 10G connectivity between devices. Please note that performance on the control plane is not guaranteed or deterministic and the network is only meant for experiment coordination and debugging.

Data Plane

There exist two parallel data plane networks that are available to experimenters. The data plane networks are interconnected with Dell Z9100-ON switches providing up to 100G connectivity between devices. The switches are built on the Broadcom Tomahawk chipset and support Openflow 1.3 as well as ONIE. The data planes are meant for latency and bandwidth sensitive experiment traffic where performance is intended to be deterministic.