Providing a backup network topology without service disruption
AssigneeCisco Technology, Inc.
InventorsJean-Philippe Vasseur, Sukrit Dasgupta
Life of this patent
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Abstract
In one embodiment, a primary root node may detect one or more neighboring root nodes based on information received from a first-hop node and may select a backup root node among the neighboring root nodes. Once selected, the backup root node may send the primary root node a networking identification and a corresponding group mesh key which the primary root node may forward to the first-hop nodes to cause the first-hop nodes to migrate to the backup root node when connectivity to the primary root node fails. In addition, the first-hop root nodes may migrate back to the primary root node when connectivity to the primary root node is restored.
Claims20
A method, comprising:
- detecting, by a primary root node, one or more neighboring root nodes based on information received from first-hop nodes in a shared-media communication network;
- selecting a backup root node from the neighboring root nodes;
- receiving a network identification and a corresponding mesh group key from the backup root node;
- and
- notifying the first-hop nodes of the backup root node along with the network identification and the corresponding mesh group key to cause the first-hop nodes to migrate to the backup root node when connectivity to the primary root node fails, while maintaining a subordinate state.
An apparatus, comprising:
- one or more network interfaces to communicate with a shared-media communication network;
- a processor coupled to the network interfaces and adapted to execute one or more processes;
- and
- a memory configured to store a process executable by the processor, the process when executed operable to:
- detect neighboring root nodes based on information received from first-hop nodes in a shared-media communication network;
- select a backup root node from the neighboring root nodes;
- and
- in response to receiving a networking identification and a corresponding mesh group key from the backup root node, notify the first-hop nodes of the backup root node along with the received network identification and the corresponding mesh group key to cause the first-hop nodes to migrate to the backup root node when connectivity to the primary root node fails.
A method, comprising:
- sending, by a first hop node, information identifying one or more neighboring root nodes to a primary root node;
- receiving a first message from the primary root node indicating a backup root node along with a network identification and a corresponding mesh group key associated with the backup root node;
- determining a connectivity failure to the primary root node;
- and
- in response to determining the connectivity failure, migrating to the backup root node, while maintaining a state of a subordinate network.
An apparatus, comprising:
- one or more network interfaces to communicate with a shared-media communication network;
- a processor coupled to the network interfaces and adapted to execute one or more processes;
- and
- a memory configured to store a process executable by the processor, the process when executed operable to:
- send information identifying one or more neighboring root nodes to a primary root node;
- determine a connectivity failure to the primary root node, in response to receiving a first message from the primary root node indicating a backup root node along with a network identification and a corresponding mesh group key associated with the backup root node;
- and
- migrating to the backup root node while maintaining a state of a subordinate network, in response to determining a connectivity failure,
- wherein the apparatus is a first hop node.
Dependencies are inferred from the claim text.