現在的看法還是, openflow太低階, 就像組合語言, 小規模用ok, 要管大用還是要mashup

http://bigswitch.com/blog/2014/05/02/modern-openflow-and-sdn-part-i
http://www.bigswitch.com/blog/2014/06/02/modern-openflow-and-sdn-part-ii
http://bigswitch.com/blog/2014/06/24/modern-openflow-and-sdn-part-iii