Introduction –

Before we start talking about Openstack and Networking options lets compare few Cloud and there terms..

 

	Openstack	AWS	Azure
Cloud virtual networking	Project	VPC(Virtual Private Cloud)	Azure VNet (Virtual Network)
Identity Mgmt	Keystone	AWS Key Management Service	Azure KeyVault
Block Storage (Virtual Disk)	Glance	Amazon Elastic Block Storage (EBS)	Azure Page Blobs / Premium Storage
Object Storage	Swift	Amazon Simple Storage Service (S3)	Azure Blob Storage
Shared File System	Manila	Amazon Elastic File System (EFS)	Azure File Storage
DNS	Designate	Route 53	Azure DNS
Private IP Address + DHCP/DNS	Private IP	Private IP	DIP(Dynamic IP address)
External (NATed IPAddress)	Floating IP NATed	Elastic IP NATed	VIP(Virtual IP address) NATed and PIP (instance-level Public IP address) Directly attached to VM

 

This document will help you to understand what the are different types of network option available in Openstack and how to use them.