Chapter 1. Understanding Red Hat Network Functions Virtualization (NFV)
Network Functions Virtualization (NFV) is a software-based solution that helps the Communication Service Providers (CSPs) to move beyond the traditional, proprietary hardware to achieve greater efficiency and agility while reducing the operational costs.
An NFV environment allows for IT and network convergence by providing a virtualised infrastructure using the standard virtualization technologies that run on standard hardware devices such as switches, routers, and storage to virtualize network functions. The management and orchestration logic deploys and sustains these services. NFV also includes a Systems Administration, Automation and Life-Cycle Management that reduces the manual work necessary. It ensures that people use modern tools, for example, devops, to work faster and at a larger scale.
1.1. Advantages of NFV
The main advantages of implementing NFV are as follows:
- Accelerates the time-to-market by allowing you to to quickly deploy and scale new networking services to address changing demands.
- Supports innovation by enabling service developers to self-manage their resources and prototype using the same platform that will be used in production.
- Addresses customer demands in hours or minutes instead of weeks or days, without sacrificing security or performance.
- Reduces capital expenditure because it uses commodity-off-the-shelf hardware instead of expensive tailor-made equipment.
- Reduces operational costs by streamlined operations and automation that optimizes day-to-day tasks and improves employee productivity.
1.2. Supported Configurations for NFV Deployments
Red Hat OpenStack Platform supports NFV deployments with the inclusion of automated OVS-DPDK and SR-IOV configuration.
- Hyper-converged Infrastructure (HCI)
- Customers can now co-locate the Compute sub-system with the Red Hat Ceph Storage nodes. This hyper-converged model delivers lower cost of entry, smaller initial deployment footprints, maximized capacity utilization, and more efficient management in NFV use cases.
- Composable roles
- You can now use composable roles to create custom deployments. Composable roles allow you to add or remove services from each role. For more information on the Composable Roles, see Composable Roles and Services.
- Open vSwitch (OVS) with LACP
- As of OVS 2.9, LACP with OVS is fully supported. This is not recommended for Openstack control plane traffic, as OVS or Openstack Networking interruptions may interfere with management. For more information See Open vSwitch Bonding Options.
- OVS Hardware offload (Technology Preview)
Red Hat OpenStack Platform supports, with limitations, the deployment of OVS hardware offload as a technology preview. For information about deploying OVS with hardware offload, see OpenvSwitch Hardware offload.
For more information on the support scope for features marked as technology previews, see Technology Preview.
Red Hat does not support the use of Open Virtual Network (OVN) with Network Functions Virtualization infrastructure (NFVi).