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#OFCProbe OFCProbe

We present the platform-independent and flexible OpenFlow Controller Analysis Tool OFCProbe on this website. It features a scalable and modular architecture that allows a granular and deep analysis of the controllers behaviors and characteristics. OpenFlow controllers can be pushed to their limit and the bottle-necks can be investigated. The tool allows the emulation of virtual switches that each provide sophisticated statistics about the controller behavior.

Table of Contents

Building OFCProbe

  • Download and install Maven
  • Make sure that your Maven setup allows new repositories
  • Execute mvn package to download dependencies and compile OFCProbe.
  • The result can be found in target/ofcprobe-*-one-jar.jar.

Tutorial

Requirements:

  • Java 7
  • OpenFlow Controller
  • Preferably a Linux System (Shell Scripts + Screen Usage in Scripts provided)
  • Passwordless SSH-Connection between OF Controller Host and OFCProbe Host for User openflow
  • Optional: SNMP Server on Controller Host (for CPU and RAM Utilization of OF Controller Host)
  • Build it as described above or download OFCProbe

Demo:

  • Optional: Change Controller IP/Port in demo.ini (default: localhost:6633)
  • To Start a sample Setup execute java -jar target/ofcprobe-*-one-jar.jar demo.ini

Preperations:

see PREPERATIONS

Simulation Sequence

see BEST_EFFORT

Topology Testing

see TOPOLOGY_EMU

Random IAT Values after Distribution

Example for NormalDistribution, mean = 10, stdev=5:

  • trafficGenConfig.iatType = 1
  • trafficGenConfig.iatDistribution = Normal
  • trafficGenConfig.iatDistributionParamter1 = 10
  • trafficGenConfig.iatDistributionParamter2 = 5

Individual Settings for Switches and PCAP File Playback

  • Set config.checkForIndividualSwitchSettings = true in config.ini on OFCProbeHost
  • Check ofSwitch.ini and change it
  • Allows to change IAT, fillThreshold, start- and stopDelay, PCAP file and Distribution Settings
  • If pcapFile Options is set, this specific ofSwitch will only send OF_PACKET_INs with Payloads sequentially taken from that PCAP File (File will be looped)

Statistics Content

see STATISTICS_CONTENT

More Infos

see OFCProbe@LS3