Survivability method for LISP based connectivity

A system comprising:

• a first edge node;
• and
• a second edge node, wherein
• the first edge node has one or more processors and one or more memories having stored therein computer-readable instructions which, when executed by the one or more processors, cause the one or more processors to perform operations comprising:
• receive, at the first edge node, a connection request from a first endpoint to a second endpoint, the first endpoint being communicatively coupled to the first edge node and the second endpoint being communicatively coupled to the second edge node;
• determine, in response to the receiving by the first edge node, whether or not a connection session is present between the first edge node and a control plane;
• route, in response to the determined presence of a connection session between the first edge node and the control plane, traffic from the first endpoint to the second endpoint based on an identifier of the second endpoint as provided by the control plane;
• query, in response to the determined absence of a connection session between the first edge node and the control plane, one or more available edge nodes for the identifier of the second endpoint using a multicast message;
• locate the second endpoint based on at least one query response received from the one or more available edge nodes in response to the querying, the at least one query response including the identifier of the second endpoint;
• and
• establish, in response to locating the second endpoint based on at least one query response received from the one or more available edge nodes, the connection request between the first endpoint and the second endpoint.

One or more non-transitory computer-readable media comprising computer-readable instructions which, when executed by one or more processors at a first edge node of a network, cause the one or more processors to perform operations comprising:

• receive, at the first edge node, a connection request from a first endpoint to a second endpoint, the first endpoint being communicatively coupled to the first edge node and the second endpoint being communicatively coupled to a second edge node;
• determine, in response to the receiving by the first edge node, whether or not a connection session is present between the first edge node and a control plane;
• route, in response to the determined presence of a connection session between the first edge node and the control plane, traffic from the first endpoint to the second endpoint based on an identifier of the second endpoint as provided by the control plane;
• query, in response to the determined absence of a connection session between the first edge node and the control plane, one or more available edge nodes for the identifier of the second endpoint using a multicast message;
• locate the second endpoint based on at least one query response received from the one or more available edge nodes in response to the querying, the at least one query response including the identifier of the second endpoint;
• and
• establish, in response to locating the second endpoint based on at least one query response received from the one or more available edge nodes, the connection request between the first endpoint and the second endpoint upon locating the second endpoint.