In computer networking and computer architecture , a northbound interface of a component is an interface that conceptualizes the lower level details (eg, data or functions ) used by, or in, the component. A northbound interface is used to interface with higher level layers of the southbound interface of the higher level component (s). In architectural overviews, the northbound interface is normally drawn from the northbound interface.
A southbound interface decomposes concepts in the technical details, mostly specific to a single component of the architecture. Southbound interfaces are drawn at the bottom of an architectural overview.
Northbound interfaces normally, and vice versa.
A northbound interface is typically an output -only interface (found to be an input user) found in a carrier-grade network and telecommunications network elements. The languages or protocols commonly used include SNMP and TL1 . For example, a device that is capable of sending out syslog messages but is not configurable by the user. Other examples include SMASH , IPMI , WSMAN , SOAP , etc.