The OpenStack Networking service provides a scalable system for managing the network connectivity within an OpenStack cloud deployment. It can easily and quickly react to changing network needs (for example, creating and assigning new IP addresses).
Networking in OpenStack is complex. This section provides the basic instructions for creating a network and a router. For detailed information about managing networks, refer to the OpenStack Cloud Administrator Guide.
Log in to the dashboard, choose a project, and click .
Click .
In the Create Network dialog box, specify the following values.
Network tab Network Name
Specify a name to identify the network.
Subnet tab Create Subnet
Select this check box to create a subnet
You do not have to specify a subnet when you create a network, but if you do not, any attached instance receives an Error status.
Subnet Name
Specify a name for the subnet.
Network Address
Specify the IP address for the subnet.
IP Version
Select IPv4 or IPv6.
Gateway IP
Specify an IP address for a specific gateway. This parameter is optional.
Disable Gateway
Select this check box to disable a gateway IP address.
Subnet Detail tab Enable DHCP
Select this check box to enable DHCP.
Allocation Pools
Specify IP address pools.
DNS Name Servers
Specify a name for the DNS server.
Host Routes
Specify the IP address of host routes.
Click Create.
The dashboard shows the network on the Networks tab.
Log in to the dashboard, choose a project, and click .
Click .
In the Create Router dialog box, specify a name for the router and click .
The new router is now displayed in the Routers tab.
Click the new router's button.
In the External Network field, specify the network to which the router will connect, and then click .
To connect a private network to the newly created router, perform the following steps:
On the Routers tab, click the name of the router.
On the Router Details page, click Add Interface.
In the Add Interface dialog box, specify the following information:
Subnet
Select a subnet.
IP Address (optional)
Enter the router interface IP address for the selected subnet.
Note: If this value is not set, then by default, the first host IP address in the subnet is used by OpenStack Networking.
The Router Name and Router ID fields are automatically updated.
Click Add Interface.
You have successfully created the router. You can view the new topology from the Network Topology tab.
