US 11,902,086 B2Granted

Method and system of a dynamic high-availability mode based on current wide area network connectivity

AssigneeNicira, Inc.

InventorsAjit Ramachandra Mayya, Parag Pritam Thakore, Stephen Craig Connors, Steven Michael Woo, Sunil Mukundan, Nitin Kumar Ananda

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Abstract

In one aspect, a method useful for implementing high availability (HA) enhancements to a computer network, comprising the steps of: providing a first edge device of a local area network (LAN); providing a second edge device of the LAN; providing a gateway system to the LAN from a wide area network; detecting that an HA cable between the first edge device and the second edge device is disconnected; establishing a network connection between the gateway system and the second edge device; with the gateway system: determining that the first edge device is active and passing network traffic, implementing a network tunneling protocol with second edge device.

Claims18

Dependent claims

A method of connecting a local area network (LAN) at a first site to a wide area network (WAN), the method comprising:

connecting the LAN to a first edge device that communicates with the WAN through a first router that uses a first WAN link to connect the LAN to the WAN;
connecting the LAN to a second edge device that communicates with the WAN through a second router that uses a second WAN link to connect the LAN to the WAN;
connecting the first and second edge devices through a high-availability cable link that allows the first and second edge devices to exchange state data regarding their associated WAN links;
using the first WAN link to establish a first active tunnel between the first edge device and a gateway deployed outside of the LAN;
using the second WAN link to establish a second active tunnel between the second edge device and the gateway deployed outside of the LAN, said gateway identifying when both the first and second edge devices designate themselves as an active edge device of the LAN and in response to said identification, directing the first edge device to operate as the active edge device while directing the second edge device to operate as a standby edge device.

2 more elements

Dependencies are inferred from the claim text.

Facts

Application: 17/572,583Filed 10 Jan 2022 · continuation
Priority: 9 Nov 2017
Published: US 2022/0131740 A128 Apr 2022
Granted: 13 Feb 2024
Term ends: Not estimatedThe source records don’t support an estimate.

Classification6 codes

H04L 12/2856
Wide area networks, e.g. public data networks: access arrangements, e.g. Internet access
H04L 12/4633
Interconnection of networks: interconnection of networks using encapsulation techniques, e.g. tunneling
H04L 12/66
Data switching networks: arrangements for connecting between networks having differing types of switching systems, e.g. gateways
H04L 41/0654
Management of faults, events, alarms or notifications: using network fault recovery

Family

Application62/583,733Us provisional application · filed 9 Nov 2017
Application15/838,052Parent of this continuation · filed 11 Dec 2017
US 2022/0131740 A1Pre-grant publication · published 28 Apr 2022
US 11,223,514 B2Parent of this continuation
US 2019/0140889 A1Published application
US 11,902,086 B2This patent

From the US filing history. Foreign family members aren’t listed.