== APPENDIX: CONFD
$ cd ~/tfs-ctrl/hackfest/netconf
$ unzip confd-basic-6.4.linux.x86_64.zip  
$ cd confd-basic-6.4.linux.x86_64/
$ ./confd-basic-6.4.linux.x86_64.installer.bin /root/confd/

Data model compilation
$ cd /root/confd/bin/
$ ./confdc -c ~/tfs-ctrl/hackfest/yang/topology.yang

Start ConfD
$ ./confd --foreground -v --addloadpath .

In another terminal, use ConfD-client to populate model
$ cd /root/confd/bin/
$ ./confd_cli
> conf
> topology node node1
> exit
> commit
> exit
> exit

Use ConfD-client to show db
$ ./confd_cli
> conf
> show full-configuration
> exit
> exit

== RUN ONOS
$ cd /root/onos-2.1.0/apache-karaf-4.2.3/bin/
$ ./karaf clean
> app activate org.onosproject.openflow
> app activate org.onosproject.gui

In another terminal, run mininet:
$ mn --topo linear,3 --mac --controller=remote,ip=127.0.0.1,port=6653 --switch ovs,protocols=OpenFlow13

In another terminal, we use ONOS REST API:
$ curl -X GET -u onos:rocks --header 'Accept: application/json' http://localhost:8181/onos/v1/links | python -m json.tool
$ cd ~/tfs-ctrl/hackfest/onos_api/
$ python3 onos_topology.py