Patent ID: 11888596
Assignee: HUAWEI TECHNOLOGIES CO., LTD.
Field: Digital communication (Electrical engineering)
Classification: CPC H | IPC H

Claim 7:
8. A network controller of a controller cluster, the controller cluster comprising a plurality of network controllers of a network, the network controller comprising:
a memory storing instructions; and
one or more processors in communication with the memory, the one or more processors configured to execute the instructions to cause the network controller to:
communicate, using an Interior Gateway Protocol (IGP) proxy, controller information about the network controller using IGP;
establish an IGP adjacency relationship between the IGP proxy of the network controller and one or more network elements in the network;
advertise controller information about the network controller to the one or more network elements, wherein the controller information is included in a Controllers Type/Length/Value (TLV), and wherein the Controllers TLV includes a number of controllers field that indicates a number of controllers connected to the network controller;
detect a communication failure within the controller cluster that splits in the controller cluster into a plurality of controller groups;
advertise updated controller information about the network controller to the one or more network elements, the updated controller information reflecting a change to the controller information in response to detecting the communication failure; and
determine that the network controller is part of an elected primary group of the plurality of controller groups; and
advertise second updated controller information about the network controller to the one or more network elements when the network controller is an intent primary controller of the elected primary group, the second updated controller information indicating that the network controller is a current active primary network controller of the network.