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If Mininet doesn't work, consult the troubleshooting section below.

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Building ONOS

Make sure that you have built ONOS in your Mininet VM or server using buck:

cd ~/onos
buck build onos

Make sure that the build completes without errors - without a correct ONOS package, you will not be able to start ONOS.
 

Info
titleGive your VM enough memory for ONOS!

ONOS java processes tend to consume a huge amount of memory. In order to run an ONOS cluster in a single VM, you should allocate a large amount of RAM to that VM. We recommend 2-4 GB (or more if you have it) for each ONOS node that you intend to run. You can see how much memory and CPU ONOS's java processes are using by running top - if you start using swap space, the performance of ONOS and Mininet will suffer greatly!

First, make sure that you have built ONOS in your Mininet VM or server using buck:

cd ~/onos
buck build onos
Legacy build process using Maven

It's also possible to use the legacy mvn build process if absolutely necessary, by setting ONOS_TAR to point to the ONOS package:

cd ~/onos
mvn clean install  # or mci for short; needs to complete without errors
onos-package  # once again,
Info
titleLegacy build process using Maven

It's also possible to use the legacy mvn build process if absolutely necessary, by setting ONOS_TAR to point to the ONOS package:

cd ~/onos
mvn clean install  # or mci for short; needs to complete without errors
onos-package  # once again, needs to complete without errors
cdcd ~/onos/tools/dev/mininet
sudo env ONOS_TAR=/tmp/onos-1.7.0.openflow.tar.gz mn --custom onos.py --controller onos,1 ...

Make sure that you use the correct ONOS_TAR file name for your version of ONOS. Also make sure that it is a gzip/tar archive:

sudo file /tmp/onos-1.7.0.openflow.tar.gz
/tmp/onos-1.7.0.openflow.tar.gz: gzip compressed data, from Unix, last modified: Thu Jun  2 15:08:11 2016

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Starting up ONOS and your data network
 Info
titleGive your VM enough memory for ONOS!
ONOS java processes tend to consume a huge amount of memory. In order to run an ONOS cluster in a single VM, you should allocate a large amount of RAM to that VM. We recommend 2-4 GB (or more if you have it) for each ONOS node that you intend to run. You can see how much memory and CPU ONOS's java processes are using by running top - if you start using swap space, the performance of ONOS and Mininet will suffer greatly!
Next, use Mininet and onos.py to start up a virtual ONOS cluster and data network:
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