VM network

If you deploy a VM without configuring a network interface, the platform will automatically assign an address in the default network.

Your administrator may create or obtain multiple IP addresses for your virtual datacenters under Virtual datacenters → Networks.

Create NICs and IP addresses

To create NICs and attach them to a VM:

1. Go to Virtual datacenters → Virtual appliances
2. If your VM is deployed and you are not using hot-reconfigure of NICs, shut down the VM
3. Edit the VM and go to Networks
4. Select a network type and a network. Network types include:
   
   1. Private networks with private IP addresses that only allow your VMs to communicate with others inside the same virtual datacenter.
   2. External networks that belong to an enterprise and allow VMs to communicate with machines outside their virtual datacenter
      
   3. Public networks with Internet addressable public IP addresses that may be required to access your VM in public cloud
   4. Subnets of global networks that are required to deploy in Google Cloud Platform and that enable you to access cloud services without general internet access  
5. Depending on the network type, you may be able to:
   
   • Request an automatically created NIC and IP by dragging and dropping "Automatically generated IP" to your VM. This IP address will be created and assigned at deploy time.
     
   • Create a new IP address and NIC by clicking the + add button, which requires the Manage virtual network elements privilege 
   • Purchase a public IP address by clicking the Purchase public IPs button
   • Create a new NIC by dragging an IP address into the IPs pane
     
     
     
     

   For each VM your administrator may limit the total number of network interfaces and/or the number of network interfaces in the same network

Optionally set Default gateway

In the Default gateway box, optionally select an address to be the default gateway of the VM.

To reorder network interfaces in the VM in supported clouds:

1. Beside a network interface, click the pencil edit button
2. Enter the desired number in the sequence where you would like to move the interface
3. Click OK

To remove a NIC from a VM:

1. Check that its network does not have the default gateway address for the VM
2. Click the X beside the NIC

To change the default gateway:

1. Select a new gateway from the list. 

To remove the current default gateway:

1. Select the gateway address
2. Click the X delete button beside the gateway address

For public cloud network configurations, please check for the following:

• Automatic network configuration or network requirements, for example, a required public IP
• Charges for public IPs that are not used by running VMs. When you remove an IP from a VM or undeploy the VM, if you no longer need the same IP address, remove it from your VDC and the platform.
• Different public IP address when you remove a public IP and add another public IP to your virtual datacenter and VM
• Limits for public IPs that are independent of any public IP limit in the platform
• The platform does not support OCI Secondary private IP addresses, so it will not display them in the VM configuration. It will display them as unavailable on the Network configuration screens. See Display secondary IP addresses in OCI

A public IP that is not part of any network in the platform is called a floating IP.

To remove a public IP from your VM

1. Power off or undeploy the VM
2. Click the trash bin delete button near the IP address.