What are northbound systems?
A northbound interface is an interface that allows a particular component of a network to communicate with a higher-level component. In architectural diagrams, northbound interfaces are drawn at the top of the applicable component, while southbound interfaces are drawn at the bottom of the component.
What is the function of northbound APIs?
Northbound APIs are the link between the applications and the SDN controller. The applications can tell the network what they need (data, storage, bandwidth, and so on) and the network can deliver those resources, or communicate what it has. These APIs support a wide variety of applications.
What is NBI in networking?
A northbound interface (NBI) is the interface to a component of higher level layer. A NBI is an output-oriented interface that is usually found in networks and network elements. An example of a NBI implementation is a device that only sends SYSLOG messages and cannot be manipulated to take any kind of input.
What functions do an SDN controller northbound API provide?
Northbound APIs: used to communicate between the SDN controller and the services and applications running over the network. These APIs facilitate innovation and enable efficient orchestration and automation of the network to align with the needs of different applications.
Is CLI a southbound interface?
The main objective of a southbound interface is to provide communication and management between the network’s SDN controller, nodes, physical/virtual switches and routers. The southbound integration is supported by the following interfaces: Simple Network Management Protocol (SNMP) Command Line Interface (CLI)
Which protocol is used for northbound interface?
SNMP
A northbound interface is typically an output-only interface (as opposed to one that accepts user input) found in carrier-grade network and telecommunications network elements. The languages or protocols commonly used include SNMP and TL1.
Is REST API northbound?
A client initiates requests to the server by well-defined REST API. The server processes the request and returns a response in an expected format. The PowerVC APIs are northbound. In other words, they conceptualize the lower-level details to be used by higher-level clients.
What is NBI API?
NBI stands for NorthBound Interface. It brings to ONAP a set of API that can be used by external systems as BSS for example. These API are based on TMF API.
What are two northbound APIs?
Southbound SDN This further lets the router to identify network topology, determine network flows and implement request sent to it via northbound interfaces.
What is the purpose of an SDN controller?
An SDN controller manages flow control to the switches/routers “below” (via southbound APIs) and the applications and business logic “above” (via northbound APIs) to deploy intelligent networks. They consolidate and mediate between different controller domains using common application interfaces.
Does SDN make networks agile?
Software-defined networking (SDN) is an architecture that abstracts different, distinguishable layers of a network to make networks agile and flexible. The goal of SDN is to improve network control by enabling enterprises and service providers to respond quickly to changing business requirements.
What is westbound API?
Eastbound and Westbound • East/westbound APIs, as illustrated in Figure, are a special case of interfaces required by distributed controllers • The functions of these interfaces include import/export data between controllers, algorithms for data consistency models, and monitoring/notification capabilities (e.g., check …