2016年5月9日 星期一

True/False Positive/Negative

What's the difference?
- True Positive
- True Negative
- False Positive
- False Negative

2016年5月6日 星期五

Ryu Controller - Traffic Monitor (Cont.)

- Try to block a flow if the traffic of that flow is abnormally large!
- A traffic monitor request switches info for every 5 seconds

2016年5月4日 星期三

RYU GUI Installation Problem

- Somebody reports that RYU GUI installation (http://dj184dja8.blogspot.tw/2016/04/ryu-installation.html) cannot work due to an import error as below:

2016年5月3日 星期二

Ryu Controller - Traffic Monitor

- Traffic monitor provides a periodically triggered inspector to obtain the flow/port status of each switches.
- A simple sample code is available here: https://github.com/osrg/ryu-book/blob/master/en/source/sources/simple_monitor.py 
- Note that it should be executed in Openflow 1.3