Method and system for root cause analysis across multiple network systems

A network node for enabling root cause analysis in across a plurality of network systems, the network node comprising:

• processing circuitry;
• and
• a computer memory storing a set of computer readable instructions that when executed by the processing circuitry cause the network node to:
• receive update information of a first local root cause analysis mechanism of a first network operator of a plurality of network operators;
• generate, based on the update information, a new node to be added to a global root cause decision tree, wherein the global root cause decision tree is to be shared by the first network operator and at least one other network operator of the plurality of network operators;
• request storage of the new node in a distributed ledger that is shared by the plurality of network operators;
• participate in a verification operation of the new node based upon first results of root cause analysis performed by the first local root cause analysis mechanism of the first network operator and additional results of root cause analysis performed by a second local root cause analysis mechanism of the at least one other network operator, wherein the first local root cause analysis mechanism and the second local root cause analysis mechanism are different, and wherein the verification operation is successful based upon both the first results and the additional results identifying the new node as a root cause;
• and
• responsive to determining that the verification operation is successful, add the new node to the distributed ledger as part of the global root cause decision tree.