Brandon Heller
b055728fd5
Before this commit, you'd have to manually insert the kernel module for OVS or OF kernel modules, and you couldn't run one regression test with all 3. Now, these are kmod insert/remove is handled automatically.
Mininet: A Simple Virtual Testbed for OpenFlow
aka
How to Squeeze a 1024-node OpenFlow Network onto your Laptop
Development Version, March 2010
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Mininet creates simple OpenFlow test networks by using process-based
virtualization and network namespaces.
Simulated hosts (as well as switches and controllers with the user
datapath) are created as processes in separate network namespaces. This
allows a complete OpenFlow network to be simulated on top of a single
Linux kernel.
Mininet may be invoked directly from the command line, and also
provides a handy Python API for creating networks of varying sizes and
topologies.
In order to run Mininet, you must have:
* A Linux 2.6.26 or greater kernel compiled with network namespace support
enabled (see INSTALL for additional information.)
* An OpenFlow implementation (either the reference user or kernel
space implementations, or Open vSwitch.) Appropriate kernel modules
(e.g. tun and ofdatapath for the reference kernel implementation) must
be loaded.
* Python, bash, ping, iperf, etc.
* Root privileges (required for network device access)
Currently Mininet includes:
- A simple node infrastructure (Host, Switch, Controller classes) for
creating virtual OpenFlow networks
- A simple network infrastructure (Mininet class) supporting parametrized
topologies (Topo subclasses.) For example, a tree network may be created
with the command
# mn --topo tree,depth=2,fanout=3
- Basic tests, including connectivity (ping) and bandwidth (iperf)
- A command-line interface (CLI class) which provides useful
diagnostic commands, as well as the ability to send a command to a
node. For example,
mininet> h11 ifconfig -a
tells host h11 to run the command 'ifconfig -a'
- A 'cleanup' command to get rid of junk (interfaces, processes, files in
/tmp, etc.) which might be left around by mininet. Try this if things
stop working!
# mn -c
- Examples (in the examples/ directory) to help you get started.
Batteries are not included (yet!)
However, some preliminary installation notes are included in the INSTALL
file. Good luck!
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Bob Lantz
rlantz@cs.stanford.edu