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

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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!

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cd ~/onos/tools/dev/mininet
sudo mn --custom onos.py --controller onos,1 --topo tree,2,2

(In this example, our "cluster" is a single node, but we will change that in a minute!)

You should see a bunch of output showing the startup of the control network and the data network.

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