Communication of policy changes in LISP-based software defined networks

A system, comprising:

• one or more processors;
• and
• a non-transitory computer-readable storage medium containing instructions which, when executed by the one or more processors, cause the system to:
• receive a first notification indicating a change in a policy for communication between a first endpoint device and a second endpoint device, the first endpoint device being connected to a network fabric through the system and the second endpoint device being connected to the network fabric through a routing device;
• determine whether one or more entries of a cache in the system are affected by the change in the policy, wherein the one or more entries of the cache comprise mapping information;
• and
• send a second notification to the routing device based on a determination that the one or more entries of the cache are affected by the change in the policy, the second notification indicating one or more endpoints connected to the routing device that are affected by the change in the policy.

A non-transitory computer-readable medium including instructions which, when executed by one or more processors, cause a first routing device to:

• receive a first notification indicating a change in a policy for communication between a first endpoint device and a second endpoint device, the first endpoint device being connected to a network fabric through the first routing device and the second endpoint device being connected to the network fabric through a second routing device;
• determine whether one or more entries of a cache in the first routing device are affected by the change in the policy, wherein the one or more entries of the cache comprise mapping information;
• and
• send a second notification to the second routing device based on a determination that the one or more entries of the cache are affected by the change in the policy, the second notification indicating one or more endpoints connected to the second routing device that are affected by the change in the policy.