US 12,170,642 B2
Managing failover between information handling systems
Lee Eric Ballard, Georgetown, TX (US); and Jonathan Foster Lewis, Round Rock, TX (US)
Assigned to Dell Products L.P., Round Rock, TX (US)
Filed by Dell Products L.P., Round Rock, TX (US)
Filed on Sep. 14, 2021, as Appl. No. 17/447,590.
Prior Publication US 2023/0077521 A1, Mar. 16, 2023
Int. Cl. H04L 61/103 (2022.01); H04L 47/20 (2022.01); H04L 47/22 (2022.01); G06F 13/36 (2006.01); H04L 101/622 (2022.01)
CPC H04L 61/103 (2013.01) [H04L 47/20 (2013.01); H04L 47/22 (2013.01); G06F 13/36 (2013.01); G06F 2213/3808 (2013.01); H04L 2101/622 (2022.05)] 17 Claims
OG exemplary drawing
 
1. A computer-implemented method of managing failover between information handling systems, the method comprising:
receiving, at an interface of a smart network interface card (smartNIC) of a primary information handling system, a packet, the primary information handling system communicatively coupled to a secondary information handling system, the smartNIC associated with a first power domain separate than a second power domain of a central processing unit (CPU) of the primary information handling system;
determining whether the packet was transmitted by a network interface card (NIC) of the secondary information handling system;
determining that the packet was transmitted by the NIC of the secondary information handling system, and in response, determining whether the packet is an address resolution protocol (ARP) request;
determining that the packet is an ARP request, and in response, cloning a medium access control (MAC) address of the NIC of the secondary information handling system at the smartNIC of the primary information handling system, including:
adjusting a power state of the secondary information handling system and a first power state of the first power domain of the smartNIC to an on-power state to clone the MAC address of the NIC of the secondary information handling system prior to adjusting a power state of the second power domain of the primary information handling system to an on-power state; and
forwarding the ARP request to a uplink connection.