neutron

TLDR

List networks

$ openstack network list

Create network

$ openstack network create [network_name]

Create subnet

$ openstack subnet create --network [network] --subnet-range [192.168.1.0/24] [subnet_name]

Create router

$ openstack router create [router_name]

List ports

$ openstack port list

Show network details

$ openstack network show [network_name]

SYNOPSIS

openstack network command [options]

Neutron is the OpenStack networking service (now accessed via unified openstack client). It provides network connectivity as a service, managing networks, subnets, routers, and ports.
Neutron supports various network topologies and plugins.

PARAMETERS

list

List networks.

create

Create network.

delete

Delete network.

show

Show network details.

set

Modify network.

NETWORK TYPES

$ flat       - Untagged network
vlan       - VLAN segmentation
vxlan      - Virtual overlay
gre        - GRE tunnels
geneve     - Geneve encapsulation

COMPONENTS

$ neutron-server      - API server
neutron-l2-agent    - L2 connectivity
neutron-l3-agent    - L3 routing
neutron-dhcp-agent  - DHCP service

CAVEATS

Requires OpenStack credentials. Plugin determines capabilities. Complex multi-tenant networking.

HISTORY

Neutron was originally called Quantum, renamed in 2013. It's part of OpenStack's core services for software-defined networking.