Using Broadcom's latest OF-DPA release, Metaswitch's Gulfstream SDN controller can now use this abstraction layer to access the full capabilities of the underlying silicon, and turn a low-cost OpenFlow switch into a powerful border router. Broadcom's OF-DPA provides a switch-level abstraction layer between the Broadcom StraraXGS switch architecture, mapping OpenFlow 1.3.1 messages to ASIC API calls.