In the last section we discussed flat network Principle , Let's create it today "flat_net" And analyze the implementation of the underlying network .

open a menu Admin -> Networks, Click on “Create Network” Button .

Show create page .

Provider Network Type choice “Flat”. Physical Network Fill in “default”, And ml2_conf.ini in flat_networks Consistent parameters .

Click on “Create Network”,flat_net Create success .

Click on flat_net link , Get into network Configuration page , Not yet subnet, Click on “Create Subnet” Button .


Set up IP The address is “172.16.1.0/24”.

Click on “Next”, Set up IP Address range is 172.16.1.101-172.16.1.200.

Click on “Create”,subnet Create success .

What happened to the underlying network

perform brctl show, View the current network structure of the control node .

Neutron Automatically created flat_net The corresponding bridge brqf153b42f-c3, as well as dhcp Of tap equipment tap19a0ed3d-fe.
in addition ,tap19a0ed3d-fe And physical network card eth1 All connected to bridge.

here flat_net The structure is as shown in the figure :

flat_net  Be ready , The next section will deploy instance Here we are flat The Internet .

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