Create flat network-5 minutes a day to play with OpenStack (87)

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In the previous section we discussed the principles of flat network, and today we will create "flat_net" and analyze the implementation of the underlying networks.

Open the menu, Admin, Networks, and click on the "Create Network" button.

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The Create page is displayed.

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Provider Network Type Select "Flat". Physical Network fills in "default", consistent with Flat_networks parameters in Ml2_conf.ini.

Click "Create Network" to create a successful flat_net.

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Click on the Flat_net link, go to the Network Configuration page, there is no subnet, click the "Create Subnet" button.

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Click "Next" to set the IP address range to 172.16.1.101-172.16.1.200.

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Click "Create" and the subnet is created successfully.

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what has changed in the underlying network

Perform brctl show to view the current network structure of the control node.

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Neutron automatically creates a new flat_net corresponding to the bridge BRQF153B42F-C3, as well as the DHCP tap device Tap19a0ed3d-fe. In addition, the TAP19A0ED3D-FE and the physical NIC Eth1 are already connected to bridge.

At this point the flat_net structure:

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Flat_net is ready, the next section deploys instance to this flat network.

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Create flat network-5 minutes a day to play with OpenStack (87)