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

Claim 0:
1. A method performed by a network controller of a controller cluster configured to control a network, the controller cluster comprising a plurality of network controllers, the method comprising:
communicating, using an Interior Gateway Protocol (IGP) proxy, controller information about the network controller to one or more network elements in the network using IGP;
establishing an IGP adjacency relationship between the IGP proxy of the network controller and the one or more network elements in the network;
advertising 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;
detecting a communication failure within the controller cluster that splits in the controller cluster into a plurality of controller groups;
advertising 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
determining that the network controller is part of an elected primary group of the plurality of controller groups; and
advertising 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.