https://www.sdnlab.com/21008.html
https://www.sdnlab.com/17677.html
http://www.docin.com/p-1339042145.html
https://openflow.stanford.edu/static/beacon/releases/1.0.4/apidocs/index.html
LLDP
原文：https://www.cnblogs.com/diyunpeng/p/10084127.html
