HPE FlexNetwork 10500 SERIES, Configuration Manual

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Figure 92 VCF fabric topology for a campus network
Neutron concepts and components
Neutron is a component in OpenStack architecture. It provides networking services for VMs,
manages virtual network resources (including networks, subnets, DHCP, virtual routers), and creates
an isolated virtual network for each tenant. Neutron provides a unified network resource model,
based on which VCF fabric is implemented.
The following are basic concepts in Neutron:
•
Network —A virtual object that can be created. It provides an independent network for each
tenant in a multitenant environment. A network is equivalent to a switch with virtual ports which
can be dynamically created and deleted.
•
Subnet —An address pool that contains a group of IP addresses. Two different subnets
communicate with each other through a router.
•
Port —A connection port. A router or a VM connects to a network through a port.
•
Router —A virtual router that can be created and deleted. It performs routing selection and data
forwarding.
Neutron has the following components:
•
Neutron server —Includes the daemon process neutron-server and multiple plug-ins
(neutron-*-plugin). The Neutron server provides an API and forwards the API calls to the
configured plugin. The plug-in maintains configuration data and relationships between routers,
networks, subnets, and ports in the Neutron database.
•
Plugin agent (neutron-*-agent) —Processes data packets on virtual networks. The choice of
plug-in agents depends on Neutron plug-ins. A plug-in agent interacts with the Neutron server
and the configured Neutron plug-in through a message queue.
•
DHCP agent (neutron-dhcp-agent) —Provides DHCP services for tenant networks.
VXLAN/VLAN
Leaf
Leaf
Leaf
Border
Spine
Spine
Access
Access Access
Access
AP
AC