Automatic resolution of virtual network instance to VLAN mapping conflicts in dual-homed deployments in a dynamic fabric automation network architecture

A first peer leaf comprising:

• at least one memory element;
• at least one processor coupled to the at least one memory element;
• and
• a mappings module that when executed by the at least one processor is configured to:
• receive, at the first peer leaf, information identifying a first virtual network instance (VNI) as being mapped to a second virtual local area network (VLAN) at a second peer leaf, wherein the first VNI is also being mapped to a first VLAN at the first peer leaf;
• and
• transmit, to a dual-homed server, a mapping of the first VNI to the second VLAN;
• and
• a blocking module that when executed by the at least one processor is configured to:
• block a link over the first VLAN that connects the first peer leaf to a virtual machine associated with the first VNI in response to a determination that the first VLAN is different than the second VLAN, wherein the virtual machine was, prior to the first peer leaf receiving a request for the VLAN mapping, associated with the first VNI at a server connected to the second peer leaf and not to the first peer leaf.

At least one machine readable non-transitory storage medium having instructions stored thereon, wherein the instructions, when executed by at least one processor cause the at least one processor to:

• receive, at a first peer leaf, information identifying a first virtual network instance (VNI) as being mapped to a second virtual local area network (VLAN) at a second peer leaf, wherein the first VNI is also being mapped to a first VLAN at the first peer leaf;
• block a link over the first VLAN that connects the first peer leaf to a virtual machine associated with the first VNI in response to determining that the first VLAN is different than the second VLAN, wherein the determination that the first VLAN is different from the second VLAN was made by analyzing a table mapping VNIs to VLANs, determining that the first VLAN was mapped to the first VNI, and comparing the second VLAN against the first VLAN being mapped to first VNI;
• and
• transmit, to a dual-homed server, a mapping of the first VNI to the second VLAN.