Communications service providers (CSPs) have been confronted by unprecedented competition for customers. Value-delivery by alternative providers, Over The Top (OTT) operators, and a new generation of cloud service providers also threaten their core business. Conventional service delivery methods involving extensive manual processes, disjoint configuration, provisioning, service assurance systems, and hardware-centricity significantly limit the speed for new service delivery and innovation. This, coupled with changing customer expectations reshaped by the advent of the cloud and mobility, necessitate a growing need to overhaul operational and business models to avoid being left behind.
Consequently, it has never been more important for operators to embrace the imminent transformation catalyzed by SDN. SDN enables a multi-vendor, intelligent network infrastructure essential towards overhauling the service delivery lifecycle. Automation is the vital element to achieve time-to-market advantages - differentiated new service offerings - and usher in a new wave of innovation yielding tremendous benefits to operators and the end users they serve.
For many organizations, the journey to SDN will take many years. Most large CSPs have large investments in existing hardware from multiple vendors, customized back-end systems that are expensive to radically change, well-established processes along with specially trained operations staff, and a culture that will take time to change.
While SDN offers tremendous promise as the catalyst to alter service delivery, like any industry transforming force, it will co-exist with existing technologies, processes, equipment, and people for years to come. As a result, organizations large and small are seeking an approach that enables organizations to realize the benefits of an intelligent infrastructure, without forklifting their entire operations.
Automating the service delivery lifecycle imposes a number of requirements on the network and has significant implications on the organization, and ultimately the business as well:
● Rapid service definition, creation, and provisioning
● Self-service management
● Virtual networks running on top of multiple vendors' equipment
● Reduce the cost to deploy, deliver, and manage new services
● Elastic network capacity
● Adopting consumption-based business models
OpenDaylight offers a flexible and open SDN platform to enable automated service delivery, including:
● Model-Driven Service Abstraction Layer (MD-SAL), which leverages industry standard YANG models to map network applications to the underlying devices to readily support hardware and technologies entrenched in the existing network
● Modular, plug-in southbound (i.e., Controller to Device) interface approach with extensive support for standard network management interfaces, OpenFlow, and proprietary interfaces and devices
● Intent-based Northbound (i.e., Network Application to Controller) interfaces exposing SDN capabilities to diverse network applications, while abstracting the underlying infrastructure details
● Network virtualization along with flexible policy mechanisms to achieve multi-tenancy in a multi-service environment
● Broad industry acceptance, including the largest open source community for any controller
By enabling operators to mix and match network applications and devices, OpenDaylight provides a powerful platform to automate and operationalize intelligent service delivery, while enabling operators to migrate to SDN at their own pace.
Major global operators have deployed OpenDaylight to automate service delivery to improve agility, increase new revenues, and reduce their operational costs.
KT Corporation T-SDN
KT’s T-SDN solution was developed to reduce operational costs, while improving the efficiency for network operations on KT’s national Transport networks. Deployment is expected in 2016, and will include KT’s 5G initiatives as well. KT selected OpenDaylight as the T-SDN Controller, which supports multiple vendors equipment, while providing a migration platform from KT’s existing network management systems.
PEN is Telstra’s self-provisioning, service delivery platform to deliver dynamic network services across the globe. OpenDaylight was selected as the SDN Controller for the production service, which is available in 25 Point of Presence (PoPs).
AT&T Switched Ethernet Services with Network on Demand
AT&T introduced the Switched Ethernet Services offering, which enables enterprise customers to self-provision dynamic carrier Ethernet bandwidth with Quality of Service (QoS). OpenDaylight was selected to enable Network on Demand capabilities, which are now available in over a 100 U.S. cities.