Asymmetric hub and spoke overlay network

A system comprising:

• one or more processors;
• and
• one or more non-transitory computer-readable media storing computer-executable instructions that, when executed by the one or more processors, cause the one or more processors to perform operations comprising:
• receiving, at a first hub node of a hub and spoke network and from a second hub node associated with the hub and spoke network, a first network advertisement including a first border gateway protocol (BGP) large community associated with a first tenant node of a first spoke of the hub and spoke network, wherein the first hub node is remote from the second hub node and the first spoke is associated with the second hub node;
• decoding, from a first portion of the first BGP large community, a first indication of a first virtual network instance (VNI) type associated with the first spoke;
• decoding, from a second portion of the first BGP large community, a first address of a first tunnel endpoint associated with the first spoke;
• storing, in a database associated with the first hub node, a first mapping between the first VNI type and the first address of the first tunnel endpoint;
• receiving, at the first hub node and from a second spoke of the hub and spoke network, a data packet to be transmitted to the first tenant node, wherein the second spoke is associated with the first hub;
• and
• sending, based at least in part on the first mapping, the data packet from the first hub node and to the first spoke.

A method comprising:

• receiving, at a first hub node of a hub and spoke network and from a second hub node associated with the hub and spoke network, a first network advertisement including a first border gateway protocol (BGP) large community associated with a first tenant node of a first spoke of the hub and spoke network, wherein the first hub node is remote from the second hub node and the first spoke is associated with the second hub node;
• decoding, from a first portion of the first BGP large community, a first indication of a first virtual network instance (VNI) type associated with the first spoke;
• decoding, from a second portion of the first BGP large community, a first address of a first tunnel endpoint associated with the first spoke;
• storing, in a database associated with the first hub node, a first mapping between the first VNI type and the first address of the first tunnel endpoint;
• receiving, at the first hub node and from a second spoke of the hub and spoke network, a data packet to be transmitted to the first tenant node, wherein the second spoke is associated with the first hub;
• and
• sending, based at least in part on the first mapping, the data packet from the first hub node and to the first spoke.