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# SDN Installation
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The SDN Switch is controlled by the SDN controller, a software service running on the SDN control node. The communication protocol is OpenFlow 1.x. The installed software is OpenDaylight.
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The SDN switch is configured to have on its ports 1 (10.1.3.0/24) and 2 (10.1.4.0/24) one SDN controller attached (currently port 2 is free/unused). Before installing OpenDaylight, the network must between the Switch and the SDN control node must be established (e.g. PINGs possible).
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## Install and run OpenDaylight
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On the SDN Control Node:
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1. Download the zip-archive of the version "Hydrogen Virtualization" from http://www.opendaylight.org/software/downloads
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2. Unzip, navigate into the directory
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3. [use ``screen`` to run opendaylight in background after logout]
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4. execute ``./run.sh -virt vtn``
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