Methods and apparatus to reduce packet flooding and duplicate packets in a multi-fabric virtual network

A non-transitory computer readable storage medium comprising instructions that, when executed by one or more processors, cause the one or more processors to at least:

• synchronize a first media access control (MAC) address from a first MAC address table of a first TOR switch of a load-based teaming (LBT) network configuration to a second MAC address table of a second TOR switch of the LBT network configuration, the first MAC address corresponding to a first network interface card (NIC) of a first host, the first NIC to be in a first active link between the first host and the first TOR switch;
• store a first switch descriptor in association with the first MAC address in the second MAC address table, the first switch descriptor to identify the first TOR switch;
• and
• for a first packet to be delivered to the first host, cause the second TOR switch to send the first packet to the first TOR switch, without sending the first packet from the second TOR switch to the first host, based on the first switch descriptor.

A method to synchronize active link information across top-of-rack (TOR) switches in a load-based teaming (LBT) network configuration, the method comprising:

• synchronizing, by executing an instruction with one or more processors, a first media access control (MAC) address from a first MAC address table of a first TOR switch of the LBT network configuration to a second MAC address table of a second TOR switch of the LBT network configuration, the first MAC address corresponding to a first network interface card (NIC) of a first host, the first NIC forming a first active link between the first host and the first TOR switch;
• storing, by executing an instruction with the one or more processors, a first switch descriptor in association with the first MAC address in the second MAC address table, the first switch descriptor indicative of the first TOR switch;
• and
• for a first packet to be delivered to the first host, sending, by executing an instruction with the one or more processors, the first packet from the second TOR switch to the first TOR switch, without sending the first packet from the second TOR switch to the first host, based on the first switch descriptor.