US 12,218,903 B2
L2 domain hierarchical address communication system
Venkatesan Mahalingam, Pleasanton, CA (US); Vinoth Kumar Arumugam, Fremont, CA (US); Senthil Kumar Ganesan, San Ramon, CA (US); and Anoop Ghanwani, Roseville, CA (US)
Assigned to Dell Products L.P., Round Rock, TX (US)
Filed by Dell Products L.P., Round Rock, TX (US)
Filed on Dec. 7, 2022, as Appl. No. 18/076,856.
Prior Publication US 2024/0195778 A1, Jun. 13, 2024
Int. Cl. H04L 61/103 (2022.01); H04L 45/02 (2022.01); H04L 47/33 (2022.01)
CPC H04L 61/103 (2013.01) [H04L 45/04 (2013.01); H04L 47/33 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A Layer 2 (L2) domain hierarchical address communication system, comprising:
a second computing device that is located in a second datacenter and that provides a second host;
a second leaf switch device that is located in the second datacenter and through which the second computing device is directly accessible;
a first leaf switch device that is located in a first datacenter that is different than the second datacenter; and
a first computing device that is located in the first datacenter, that provides a first host, and that is coupled to and directly accessible via the second leaf switch, wherein the first computing device is configured to:
provide, to the first leaf switch device, a first data communication that includes a second hierarchical Media Access Control (MAC) address of the second host having a hierarchical MAC prefix that includes a site field that provides a site identifier identifying the second datacenter, a pod field that provides a pod identifier identifying a leaf switch device group of a plurality of leaf switch devices that include the second leaf switch device, a rack field that provides a rack identifier identifying the second leaf switch device, and a host field that provides a second host identifier identifying the second host, wherein the first leaf switch device is configured to:
receive, from the first host, the first data communication;
retrieve, using the site identifier that identifies the second datacenter, the pod identifier that identifies the leaf switch device group, and the rack identifier that identifies the second leaf switch device in the hierarchical MAC prefix in the second hierarchical MAC address, second leaf switch forwarding information for the second leaf switch device from a forwarding table in the first leaf switch device that does not store second host forwarding information for the second host identifier; and
forward, directly to the second leaf switch device using the second leaf switch forwarding information that is based on the site identifier, the pod identifier, and the rack identifier, the first data communication.