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# vFirewall ONAP Use Case
This use case is composed of three virtual functions (VFs) running in
separate Ubuntu Virtual Machines:
* [Packet generator][1]: Sends packets to the packet sink through the
firewall. This includes a script that periodically generates different
volumes of traffic.
* [Firewall][2]: Reports the volume of traffic passing though to the
ONAP DCAE collector.
* [Traffic sink][3]: Displays the traffic volume that lands at the sink
VM using the link http://192.168.20.250:667 through your browser
and enable automatic page refresh by clicking the "Off" button. You
can see the traffic volume in the charts.
## Adjust packet generator:
The packet generator contains 10 streams: fw\_udp1, fw\_udp2,
fw\_udp3, . . . , fw\_udp10. Each stream generates 100 packets every
10 seconds. The */opt/run\_traffic\_fw\_demo.sh* script on the packet
generator VM starts automatically and alternates high traffic (i.e.
10 active streams at the same time) and low traffic (1 active stream)
every 5 minutes.
To enable a stream, include `{"id":"fw_udp1", "is-enabled":"true"}`
in the *pg-stream* bracket.
To adjust the traffic volume produced by the packet generator, run the
following command in a shell:
```
curl -X PUT \
-H "Authorization: Basic YWRtaW46YWRtaW4=" \
-H "Content-Type: application/json" \
-H "Cache-Control: no-cache" \
-d '{"pg-streams":{"pg-stream": [{"id":"fw_udp1", "is-enabled":"true"},{"id":"fw_udp2", "is-enabled":"true"},{"id":"fw_udp3", "is-enabled":"true"},{"id":"fw_udp4", "is-enabled":"true"},{"id":"fw_udp5", "is-enabled":"true"}]}}' \
"http://192.168.10.200:8183/restconf/config/sample-plugin:sample-plugin/pg-streams"
```
The command above enables 5 streams.
## License
Apache-2.0
[1]: packetgen
[2]: firewall
[3]: sink
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