Hands-on Open vSwitch and Software-defined Networking Lab Guide
Explore the practical aspects of Open vSwitch and Software-defined Networking through a comprehensive lab guide. Learn about OpenFlow protocol, flow tables, forwarding strategies at different layers, and more. Enhance your understanding of network management and flow control in a virtual environment.
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Hands-on Open vSwitch and Software-defined Networking Jorge Crichigno, Shahrin Sharif, Elie Kfoury University of South Carolina http://ce.sc.edu/cyberinfra jcrichigno@cec.sc.edu, ssharif@email.sc.edu, ekfoury@email.sc.edu WASTC 2021 virtual Faculty Development Weeks (vFDW) June 24, 2021 1
OpenFlow overview OpenFlow is a protocol specification that describes the communication between OpenFlow switches and an OpenFlow controller OpenFlow consists of three components OpenFlow controller OpenFlow protocol OpenFlow switch 3
Flow Table A flow table consists of flow entries A flow entry consists of header fields, counters, and actions associated with that entry 4
Lab Topology Switch s1 connected to hosts h1 and h2 Hosts h1 and h2 belong to network 10.0.0.0/8 The lab aims to demonstrate how to manage flows manually in the switch s1 s1-eth2 s1-eth1 s1 h1-eth0 h2-eth0 10.0.0.1/8 10.0.0.2/8 5
Forwarding Using Layer 1 Everything that comes from s1-eth1 is sent out to s1-eth2 Everything that comes from s1-eth2 is sent out to s1-eth1 s1-eth2 s1-eth1 s1 h1-eth0 h2-eth0 10.0.0.1/8 10.0.0.2/8 6
Forwarding Using Layer 2 Flow entries based on MAC addresses of the hosts s1-eth2 s1-eth1 s1 h1-eth0 h2-eth0 10.0.0.1/8 10.0.0.2/8 7
Forwarding Using Layer 3 Flow entries based on IP addresses of the hosts s1-eth2 s1-eth1 s1 h1-eth0 h2-eth0 10.0.0.1/8 10.0.0.2/8 8
Forwarding Using Layer 4 Flow entries based on TCP A simple python web server is running in host h2 Host h1 can connect to the server using port 80 s1-eth2 s1-eth1 s1 h1-eth0 h2-eth0 10.0.0.1/8 10.0.0.2/8 9
Setting Match Priority Packets are matched against flow entries based on prioritization s1-eth2 s1-eth1 s1 h1-eth0 h2-eth0 10.0.0.1/8 10.0.0.2/8 10
