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OneAccess Networks has released a whitepaper outlining a practical, step-by-step approach for enterprises and service providers to migrate to software-defined networking (SDN) and network functions virtualization (NFV). As customer traffic volumes grow and traffic patterns become more volatile, OneAccess argues that combining SDN and NFV is increasingly important for operators seeking to stay competitive and reduce operational complexity.
Despite the clear advantages—greater agility, faster service provisioning, reduced hardware dependency, and more efficient resource use—many major service providers have been slow to adopt NFV and SDN. The whitepaper, titled “A Pragmatic NFV Strategy for the Delivery of Enterprise Business Services,” identifies a primary obstacle as the difficulty of defining a realistic migration strategy. Large incumbent investments in current network infrastructure, operations, and business support systems make a wholesale “rip-and-replace” approach impractical. Moreover, leading networking vendors often promote different, incompatible migration paths, further complicating decision-making.
The whitepaper examines how virtualization fits into modern networks, highlights both short-term and long-term benefits of SDN and NFV, and details the technical and organizational challenges of migration. It offers guidance on building a phased migration strategy and explains how OneAccess Networks’ solutions can be used to transition existing services into a virtualized environment with minimal disruption.
Central to the OneAccess proposal is a four-step migration roadmap that leverages a virtual Customer Premises Equipment (vCPE) adapter. This adapter is designed to bridge legacy services with new virtualized service chains, enabling operators to preserve current investments while gradually introducing virtual network functions (VNFs). Initially, the vCPE adapter translates NETCONF and other management protocols into legacy device instructions, allowing existing equipment to interoperate with virtualized control and service layers. It can also be used to redirect traffic so that traffic flows are progressively steered through VNFs as they are introduced.
The four-step roadmap recommended by OneAccess is as follows:
- Step 1: Deploy the vCPE adapter to unify physical and virtual CPE services within the same service chain. This creates a hybrid environment in which legacy appliances and VNFs can coexist and be managed together.
- Step 2: Enable “book-ended” services such as hybrid access, VPN and WAN optimization. These services combine hybrid, physical and virtual components under a centralized control framework, enabling incremental service virtualization while retaining existing capabilities.
- Step 3: Introduce native NETCONF support on both virtual and physical CPE devices. This standardizes device management and orchestration, simplifying automated provisioning and lifecycle management across mixed environments.
- Step 4: Activate OpenFlow-capable data paths on CPE devices or edge routers to enable more granular SDN control over traffic flows and to unlock advanced programmability and dynamic service chaining.
This phased approach minimizes service disruption and reduces risk by allowing operators to migrate key services incrementally, validate each stage, and reuse existing assets where possible. By combining protocol translation, traffic redirection, and native support for network automation standards, the vCPE adapter can help operators realize the benefits of NFV and SDN without the need for immediate, large-scale hardware replacement.
In related industry activity, the Broadband World Forum has confirmed that Ericsson, Alcatel‑Lucent and Huawei will participate in interactive demonstrations of NFV proof-of-concepts. Ericsson plans to showcase insights from virtualizing end-to-end Wi‑Fi calling network infrastructure. Organizers expect additional NFV solution providers to be announced in the weeks ahead; the demonstrations are scheduled for 20–21 October.
Overall, the OneAccess whitepaper emphasizes that a pragmatic, staged migration—centered on interoperability and incremental virtualization—offers the most realistic path for service providers to adopt SDN and NFV. By focusing on adapters and hybrid service chains, operators can protect existing investments, accelerate time-to-market for new services, and progressively transform their networks into more agile, software-driven platforms.