Flat Network & External Network

Flat Network & External Network

Task:

• Create a Flat shared Network name dclessons-sha-flat1 with subnet name dclessons-flatsubnet4 for subnet 60.60.60.0/24
• Create a Flat external network name dclessons-ext-flat2 with subnet name dclessons-extsubnet5 for subnet 70.70.70.0/24

Solution: 

Flat network is another network type supported by OpenStack, it is very much useful when tenant network isolation is not mandatory and it also access to centralized storage for all instance using dedicated physical interface.

To create Falt network we have to edit the ml2_conf.ini file with following commands.

Now press Ctrl+W to search ml2 and edit the following marked in bold

Again press Ctrl+W and search ml2_type_flat and edit the following:

Now once done , restart the neuton service.

Now we are going to create the flat shared and flat external network as per following screen shots:
Go to Admin | System | Networks. And Click on the + Create Network and provide the details and click on shared network icon.