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supported on all the network configurations—Basic, Advanced, and VPC. Security Groups, Static NAT
and Port forwarding services are supported on these additional IPs.
As always, you can specify an IP from the guest subnet; if not specified, an IP is automatically picked
up from the guest VM subnet. You can view the IPs associated with for each guest VM NICs on the
UI. You can apply NAT on these additional guest IPs by using network configuration option in the
CloudPlatform UI. You must specify the NIC to which the IP should be associated.
This feature is supported on XenServer, KVM, and VMware hypervisors. Note that Basic zone security
groups are not supported on VMware.
16.16.1. Use Cases
Some of the use cases are described below:
• Network devices, such as firewalls and load balancers, generally work best when they have access
to multiple IP addresses on the network interface.
• Moving private IP addresses between interfaces or instances. Applications that are bound to specific
IP addresses can be moved between instances.
• Hosting multiple SSL Websites on a single instance. You can install multiple SSL certificates on a
single instance, each associated with a distinct IP address.
16.16.2. Guidelines
To prevent IP conflict, configure different subnets when multiple networks are connected to the same
VM.
16.16.3. Assigning Additional IPs to a VM
1. Log in to the CloudPlatform UI.
2. In the left navigation bar, click Instances.
3. Click the name of the instance you want to work with.
4. In the Details tab, click NICs.
5. Click View Secondary IPs.
6. Click Acquire New Secondary IP, and click Yes in the confirmation dialog.
You need to configure the IP on the guest VM NIC manually. CloudPlatform will not automatically
configure the acquired IP address on the VM. Ensure that the IP address configuration persist on
VM reboot.
Within a few moments, the new IP address should appear with the state Allocated. You can now
use the IP address in Port Forwarding or StaticNAT rules.
16.16.4. Port Forwarding and StaticNAT Services Changes
Because multiple IPs can be associated per NIC, you are allowed to select a desired IP for the Port
Forwarding and StaticNAT services. The default is the primary IP. To enable this functionality, an extra
optional parameter 'vmguestip' is added to the Port forwarding and StaticNAT APIs (enableStaticNat,
createIpForwardingRule) to indicate on what IP address NAT need to be configured. If vmguestip is