Liboftrace

From OpenFlow Wiki

What

• oftrace is an OpenFlow dump analyzer/tracing library
• Look at Slides of a talk on oftrace oftrace.pdf

How

• Take as input a libpcap formated file (i.e., from tcpdump/wireshark) and

output useful statistics about the OpenFlow session

• liboftrace is available as a C library (liboftrace.{a,so}) and by higher

level programing languages, e.g., python, via swig.

Example Applications

• ofstats/pyofstats
  • Prints controller processing delay times, i.e., the time difference between when a controller receives a packet_in message and when it sends the corresponding packet_out or flow_mod message.
• ofdump/pyofdump
  • Lists OpenFlow control messages with timestamps and controller/switch pairs

Download

• Download bleeding edge from git
  • git clone git://www.openflowswitch.org/oftrace.git

Contribute

• If you would like to contribute patches or tools, please mail us!

Authors/Contributors

• Rob Sherwood
• Yiannis Yiakoumis

Bugs

• There are almost definitely bugs in oftrace
• Please post them in our Trac page