Adaptive Flow Control using OpenFlow

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Presentation transcript:

Adaptive Flow Control using OpenFlow Sripriya Seetharam (MU) Kevin Andrew (UK) Ashkan Ghaffarinejad (ASU)

Outline Problem Statement Setup Topology OpenFlow Controller Setup Execution steps Demo Future work

Problem Statement Diverse application bandwidth requirements Over provisioning or under provisioning of network resources Tight coupling of routing tables on switches does not allow the user to control the flow policies Motivation: Rate control the bandwidth based on application flows instead of arbitrary allocation of resources

Goal 1st case: 2 flows 2nd case: 2 flows 500 mbps 500 mbps 800 mbps

Setup Reserve 6 VMs on ExoGENI AM with Ubuntu and OVS images Configure the links with interfaces to belong to same subnet, in our case we set the subnet as 192.168.0.0/16 Add the route entry to identify packets belonging to the subnet on all four hosts Configure the 2 OVS switches with bridge and 3 ports on each switch

Topology Host 1 Host 3 OVS 2 OVS 1 Host 2 Host 4

OpenFlow controller setup Trema OpenFlow controller Controller performs: Mapping of ip address to network interfaces Identifies the first packet based on application type and modifies the flow rate of application flows

Execution Steps Host 3 Host 1 Iperf Host 4 Host 2 Ping OpenFlow Controller Iperf Host 4 Host 2 Ping

Start Running Controller Demo Start Running Controller

Connect Switch to Controller Demo Connect Switch to Controller

Running iperf Confirms TCP Bandwidth has Been Limited Demo Running iperf Confirms TCP Bandwidth has Been Limited

Demo Start Running ping

Running iperf Confirms ICMP Bandwidth has Been Limited Demo Running iperf Confirms ICMP Bandwidth has Been Limited

Future Work In this experiment we used only 2 flows; in the future we plan to use real-world application flows to identify packets and apply optimized flows rates Further enhancements would include integrating multiple application VLANs and perform intelligent network allocations

Acknowledgements Special thanks to Shufeng Huang, Niky Riga, Dr. Bing Wang and all the people who helped us through the summer camp

Questions?