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Public Virtual IP (PVIP) is the simplest networking mode to use. No separate VLANs are used, though a network which appears to be a VLAN to the end user is created inside each node between the VM and a virtual router running on the compute node itself.

Flexiant Cloud Orchestrator provides the following functions.

  • IP Address Management
  • DHCP for IPv4 addresses
  • SLAAC (Stateless address autoconfiguration) for IPv6 addresses
  • External routing
  • Firewalling

Public Virtual IP mode allows Licensees to have efficient management of IP and network resource. Each NIC on each VM appears to have its own private network, and has no layer 2 connectivity other than to a virtual router running on the node. In this manner, a single /32 IP address can be assigned to each NIC (and, if each VM has only one NIC to each VM).

PVIP mode also provides maximal scalability for your switched network. The technical reasons for this are as follows:

  • As no additional VLANs are used for each additional customer or VM, the solution minimises VLAN use, reducing requirements of switches.
  • Additional MAC addresses are exposed on a 'one per node' basis, not a 'one per virtual NIC' basis, which reduces CAM table usage on the switch.

You do not need routing nodes to use PVIP mode. However, you will need an upstream router to determine to which node traffic headed towards a VM should be directed. You may (optionally) supply more than one upstream router for redundancy.

Public Virtual IP mode is available with all hypervisors.

For more information about installing and configuring Public Virtual IP, see Installing Flexiant Cloud Orchestrator, and Managing Routing Protocols.

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