Method and apparatus for efficient communication of management data in a telecommunications network
View Patent ↗A mediator for efficiently exchanging management data in a hierarchical management network for managing network elements of a data transport network partitions resources of the network elements among a plurality of management representations of the network elements and selectively forwards management data associated with respective management representations to a higher level of the hierarchy. The mediator modifies the management data so that the higher level (i.e. a northbound element management system or a network management system) receives the management data in a view consistent with the management representation of the network element. Client-based management representations may be created to permit clients to manage selected resources of a network element, and testing-based management representations may be created to facilitate concurrent testing of a network element.
1. A mediator device in a management communications stream established between a network element (NE) and network management systems (NMS), the mediator comprising:
a southbound interface for exchanging management data with the NE;
a signal processor for processing the management data from the southbound interface to provide management data associated with a management representation of the NE, the management representation corresponding to a logical NE based on a predetermined proportion of resources of the NE; and
a northbound interface for exchanging management data associated with the management representation with the NMS;
wherein the signal processor comprises a filter for the northbound interface, the filter inspecting individual packet content and discarding from individual packets management data received from the southbound interface that is not associated with the management representation of the logical network element, and
wherein the filter is associated with a respective mutually exclusive set of the predetermined proportion of resources of the NE, and only admits management data associated with that predetermined set of resources.
2. A mediator device that processes at least two management communications streams established between a network element (NE) and respective network management systems, the mediator comprising:
a southbound interface for exchanging management data with the NE;
a signal processor for processing the management data from the southbound interface to provide management data associated with respective ones of a plurality of management representations of the NE; and
a northbound interface for each of the network management systems, each northbound interface exchanging management data associated with one of the management representation, with a designated network management system;
wherein the signal processor comprises a filter for each of the northbound interfaces, each filter inspecting individual packet content and discarding from individual packets management data received from the southbound interface that is not associated with the respective management representation, and
wherein each of the filters is associated with a respective mutually exclusive set of resources of the NE, and only admits management data associated with that set of resources.
3. The mediator device as claimed in claim 2 wherein the signal processor further comprises:
a module for translating and transforming the management data for each of the northbound interfaces, the module presenting a consistent view of the management representation expected by each network management system.
4. The mediator device as claimed in claim 3 wherein the module is adapted to substitute an equipment identifier used by the NE with an equipment identifier used by the management representation.
5. The mediator device as claimed in claim 3 wherein each of the northbound and southbound interfaces is associated with a respective logical port, and the mediator serves as a proxy for management data.
6. The mediator device as claimed in claim 2 wherein each set of resources is associated with a group of ports of the NE.
7. The mediator device as claimed in claim 2 further comprising an access control module for selectively permitting the respective network management systems to control a predetermined proportion of resources of the NE.
8. The mediator device as claimed in claim 2 wherein the mediator is a communications device connected to the NE by the southbound interface, and connected to a plurality of element management systems by respective northbound interfaces, the element management systems being connected to the corresponding network management systems.
9. The mediator device as claimed in claim 2 wherein the mediator is a communications device connected to an element management system by the southbound interface, the element management system being connected to the NE.
10. The mediator device as claimed in claim 2 further comprising a northbound interface that exchanges all management data associated with the NE with a network management system.
11. A method for providing a plurality of management representations of a network element (NE), the method comprising:
filtering and translating management data originating from the NE to provide management data to each of the management representations of the network element, the filtering being associated with a respective mutually exclusive set of resources of the NE for each management representation and only admitting management data to each management representation associated with that set of resources; and
for each of the management representations, establishing communications with a respective network or element management system to permit the exchange of the management data of a management corresponding representation;
wherein filtering and translating comprises inspecting individual packet content and filtering the management data received from the NE to provide a filtered management data stream to each of the management representations, the filtering discarding management data from individual packets that is not associated with each respective management representation.
12. The method as claimed in claim 11 further comprising an initial step of establishing a network connection to the NE.
13. The method as claimed in claim 11 further comprising an initial step of establishing a network connection to an element management system of the NE.
14. The method as claimed in claim 11 wherein filtering and translating further comprises:
translating and transforming each filtered management data stream to provide management data to the element or network management system that is consistent with each management representation.
15. The method as claimed in claim 14 wherein translating and transforming comprises substituting an equipment identifier used by the NE with an equipment identifier used by the management representation.
16. The method as claimed in claim 11 further comprising:
determining if an element or network management system sending management data is authorized to control NE resources targeted by the management data; and
forwarding the management data to the NE only if it is determined that the element or network management system is authorized to control the NE resources.
17. The method as claimed in claim 16 further comprising returning an error message to the element or network management system that sent the management data if it is found that the element or network management system is not authorized to control the NE resources.
18. The method as claimed in claim 11 further comprising creating at least two testing-based management representations of the NE to facilitate concurrent testing of the NE.