Provider networks usually map to the existing physical networks of the data center in which the NOVA host is present. The flat (untagged) and VLAN types of networks are used in this category.
Let's understand some networking terminology that OpenStack Networking uses:
- Subnet: A subnet is a technique for dividing an IP network into two or more smaller networks. This is done by splitting the IP address into network ID and host ID. The subnet mask decides how the IP address is split to represent the network ID and host ID. Subnetting is provided by the OpenStack Networking Service for tenant networks as well as provider networks.
- Ports: A port is a connection endpoint of attaching a networking device. For example, a virtual ...