L2 domain hierarchical address communication system

An Information Handling System (IHS), comprising:

• a processing system;
• and
• a memory system that is coupled to the processing system and that includes instructions that, when executed by the processing system, cause the processing system to provide a leaf switch engine that is configured to:
• receive, from a first host provided by a first computing device that is located in a first datacenter with the processing system, a first data communication that includes a second hierarchical MAC address of a second host provided by a second computing device that is located in a second datacenter that is different than the first datacenter and that is coupled to the processing system by a second leaf switch device that is also located in the second datacenter;
• retrieve, using a hierarchical MAC prefix in the second hierarchical MAC address, second leaf switch forwarding information for the second leaf switch device from a forwarding table that is coupled to the processing system and that does not store second host forwarding information for a second host identifier that is included in the second hierarchical MAC address and that identifies the second host;
• and
• forward, using the second leaf switch forwarding information, the first data communication to the second leaf switch device.

A method for providing Layer 2 (L2) domain hierarchical address communications, comprising:

• receiving, by a first leaf switch device from a first host provided by a first computing device that is that is located in a first datacenter with the first leaf switch device, a first data communication that includes a second hierarchical MAC address of a second host provided by a second computing device that is located in a second datacenter that is different than the first datacenter and that is coupled to the first leaf switch device by a second leaf switch device that is also located in the second datacenter;
• retrieving, by the first leaf switch device using a hierarchical MAC prefix in the second hierarchical MAC address, second leaf switch forwarding information for the second leaf switch device from a forwarding table that is coupled to the first leaf switch device and that does not store second host forwarding information for a second host identifier that is included in the second hierarchical MAC address and that identifies the second host;
• and
• forwarding, by the first leaf switch device to the second leaf switch device using the second leaf switch forwarding information, the first data communication.