add initial networking thoughts

design/networking.md

 # Networking
+
+## Edge Routing
+
+We will take delivery of two diverse 1GB network connections, each recieving a full BGP feed.
+Routers will need to terminate 1GB ethernet handoff w/ uplink into core network.
+
+## Core Routing & Switching
+
+We will have a two node collapsed core architecture comprised of 40GB Open Network Switch
+hardware running Cumulus Networks OS. The ASIC Chipset should be a Broadcom Tomahawk or Broadcom Trident2+.
+
+## Host Connectivity
+
+Hosts will be dual connected to each of the core switches by 40 GB interconnects.
+Hosts will run Cumulus Quagga for end-to-end L3 connectivity and dynamic routing.