FAS: Using FPGA to Accelerate and Secure SDN Software Switches

Table 2

Comparisons of acceleration mechanisms for SDN software switches.

Names	Method	Acceleration object	Complexity	Network virtualization	HW state; manage. cost
DPDK-based OF switching	Intel CPU/NIC	Packet I/O	Low	Support	No
Netmap-based OF switching	Netmap lib	Packet I/O	Low	Support	No
Flow Director	Driver modification	OF flow cache	Medium	Not support	High
SSDP	Commodity switching chip with TCAM	OF forwarding path	High	Not support	High
FAS	FPGA	Time-consuming functional modules in OF fast path	Medium	Support	Low