Software-Defined Networking
Automate and program your network faster
Provision, manage, and program networks more rapidly with software-defined networking. In this centralised approach to network management, the underlying network infrastructure is abstracted from applications. SDN provides choice in automation and programmability across data centres, campuses, and wide-area networks. Use Cisco software-defined solutions to build intent-based networks.
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What SDN can do for you
Simplify operations
Reduce complexity by decoupling the control and data planes, while making automation highly secure and scalable.
Achieve faster time to market
Deploy applications and services faster by leveraging open APIs. Easily integrate third-party products.
Build programmable networks
Eliminate manual configuration. Provision and manage data centres, campuses, and wide-area networks.
Lay the foundation for intent
Centralise configuration, management, control, monitoring, service delivery, and cloud automation.
Find the best SDN solution for you
For data centre managers
Increase business agility: automate provisioning and operations, enhance security, and enable multicloud.
For network managers
Design, provision, and manage highly secure networks that provide access to any application.
SDN customer success stories
New campus: single fabric
The University of Northampton designs, personalises, provisions, and manages its network as a single fabric across an entire campus to meet changing technology needs.
A connected digital county
Durham County has automated data centre services and policies, so engineers can spend less time managing the data centre network and more time focusing on strategic initiatives.
Simplicity, scalability, security
With Cisco ACI, Ameritas has increased business agility through operational efficiency, unmatched security, and a seamless path to multicloud.
SD-WAN: tips for customers
Cope with the explosion in traffic demand. Run large branch infrastructure. Securely manage critical sites.
Customer Services for SDN
Reduce the complexity of transformation and speed adoption of new operations models to accelerate ROI.
What is software-defined networking?
How does a software-defined network work?
Software-defined networking (SDN) is designed to make a network flexible and agile. SDN lets you design, build, and manage networks, separating the control and forwarding planes. As a result, the control plane is directly programmable, and it abstracts the underlying infrastructure for applications and network services.
Network intelligence is logically centralised through programmable SDN controllers. Implemented in software, these controllers maintain a coherent view of the network domain. To applications and policy engines, SDN looks like a single logical switch.
What does SDN consist of?
Software-defined networking (SDN) offers a centralised, programmable network that consists of an SDN controller, southbound APIs, and northbound APIs.
- SDN controllers are the brains of the network, offering a centralised view of the overall network.
- Southbound APIs relay information to the switches and routers in network.
- Northbound APIs communicate with the applications and deploy services.
What are the benefits of software-defined networking (SDN)?
- Fast and automated application deployment.
- On-demand app delivery and mobility at scale.
- Greater resource flexibility and utilisation.
- Reduction of IT costs by enhancing the benefits of data centre virtualisation.
What is the relationship between SDN and intent-based networking?
Software-defined networks have automated the process of network management.
Intent-based networking adds context, learning, and assurance capabilities by tightly coupling policy with intent. SDN can be a building block of intent-based networking.
What is the relationship between SDN and NFV?
Network function virtualisation (NFV) uses hypervisor and cloud-computing technology for network automation and orchestration. NFV works best in the context of network services (OSI Level 4 and up) that require heavy compute power, with low-to-medium bandwidth throughput.
SDN converges the management of network and application services into centralised, extensible orchestration platforms. SDN is optimal for high-throughput network forwarding (OSI Levels 0-3) where bandwidth-intensive workloads need significant traffic management.