Efficient high availability within a network device

A non-transitory computer-readable storage medium storing instructions that when executed by a processing resource of a network device cause the processing resource to perform a method, the method comprising:

• receiving, by the processing resource of the network device from a first hardware unit within the network device, a message indicating an operation to be performed at the network device, wherein the first hardware unit includes a first processing resource distinct from the processing resource of the network device;
• performing the operation at the processing resource of the network device based on information in the message;
• sending an output of the operation to a second hardware unit within the network device that operates as a standby for the first hardware unit for facilitating high availability, wherein the second hardware unit includes a second processing resource distinct from the processing resource of the network device;
• updating the second hardware unit with the output of the operation to synchronize between the first and second hardware units via the processing resource of the network device;
• and
• providing, to the first hardware unit from the processing resource of the network device, an acknowledgment of completion of the operation.