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US 11,888,596 B2Granted
System and method for network reliability
AssigneeHuawei Technologies Co., Ltd.
InventorsHuaimo Chen, Donald Eggleston Eastlake, III
Life of this patent
Estimating the term…
Abstract
A method performed by a network controller for providing network reliability. The method includes employing an Interior Gateway Protocol (IGP) proxy configured to communicate controller information about the network controller to the one or more network elements using IGP (Link-State Advertisement (LSA) or Link State Protocol Data Unit (LSP)) with a Controllers TLV. The method uses the controller information for proper election of a primary controller in the event of a network failure.
Claims16
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.
6 more elements
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.
9 more elements
A 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:
- configure the network controller as a secondary network controller in a controller cluster;
- establish an Interior Gateway Protocol (IGP) adjacency relationship between an 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 with a primary network controller in the controller cluster;
- 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;
- determine that the primary network controller has failed;
- and
- advertise second updated controller information about the network controller to the one or more network elements when the primary network controller has failed, the second updated controller information promoting the network controller from the secondary network controller to the primary network controller in the controller cluster.
8 more elements
Dependencies are inferred from the claim text.