Patent ID: 11902086
Assignee: NICIRA, INC.
Field: Digital communication (Electrical engineering)
Classification: CPC H | IPC H

Claim 0:
1. 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.