US Patent No. 10,924,396

ACHIEVING L2 TUNNEL REDUNCANCY AND L3 LOAD BALANCING


Patent No. 10,924,396
Issue Date February 16, 2021
Title Achieving L2 Tunnel Reduncancy And L3 Load Balancing
Inventorship Anoop Govindan Nair, Karnataka (IN)
Anil Raj, Karnataka (IN)
Venkatavaradhan Devarajan, Karnataka (IN)
Assignee Hewlett Packard Enterprise Development LP, Houston, TX (US)

Claim of US Patent No. 10,924,396

1. A method for establishing a redundant gateway in a network, comprising:operating, by a first gateway, the redundant gateway in conjunction with a second gateway according to a redundant gateway protocol;
maintaining a first tunnel between the first gateway and a tunnel endpoint according to a tunneling protocol, wherein the second gateway maintains a second tunnel between the second gateway and the tunnel endpoint;
in response to the first gateway operating as a primary gateway for the redundant gateway, forwarding broadcast, unknown unicast, and multicast traffic via the first tunnel to the tunnel endpoint;
in response to the first gateway operating as a backup gateway for the redundant gateway, dropping the broadcast, unknown unicast, and multicast traffic; and
forwarding known unicast traffic via the first tunnel to the tunnel endpoint regardless of whether the first gateway operates as the primary gateway or the second gateway.