#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
• Tutorial
  • Requirements
  • Demo
  • Preperations
  • Simulation Sequence
  • Topology Testing
  • Random IAT Values after Distribution
  • Individual Settings for Switches
• Statistics Content
• More Information

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