An elastic virtual switch is associated with the following main resources: an IP network and a virtual port.
An IP network, also known as an IPnet, represents a block of IPv4 or IPv6 addresses with a default router for the block. This block of IPv4 or IPv6 addresses is also known as the subnet. You can associate only one IPnet to an elastic virtual switch. All VMs that connect to the elastic virtual switch through a virtual port are assigned an IP address from the IPnet that is associated with the elastic virtual switch.
You can also manually assign an IP address to a VM by setting the IP address property, ipaddr, for the VPort. This IP address must be within the subnet range of the IPnet. For more information about how to add an IPnet to the elastic virtual switch, see How to Configure an Elastic Virtual Switch.
A virtual port, also known as a VPort, represents the point of attachment between the VNIC and an elastic virtual switch. When a VNIC connects to a VPort, the VNIC inherits the network configuration parameters that the VPort encapsulates, such as the following:
SLA parameters such as maximum bandwidth, class of service, and priority
When you create a VPort, a randomly generated MAC address and the next available IP address from the associated IPnet are assigned to the VPort. The randomly generated MAC address has a default prefix consisting of a valid IEEE OUI with the local bit set. You can also specify the IP address and the MAC address when you add a VPort by using the evsadm add-vport command. For more information about how to add a VPort, see How to Configure an Elastic Virtual Switch.
The following table shows the VPort properties.
You cannot modify the properties evs and tenant because they are read-only properties. For more information about the VPort properties, see the evsadm(1M) man page.