Inverter System, Cluster, And Photovoltaic System

An inverter system cluster, comprising:

• an inverter system, comprising:
• a power line;
• a first inverter configured to convert a first direct current to a first alternating current;
• a second inverter connected to the first inverter through the power line and configured to:
• convert a second direct current to a second alternating current;
• and
• communicate with the first inverter through the power line based on a first protocol stack;
• and
• a communication apparatus connected to the first inverter and configured to communicate with the first inverter based on a second protocol stack;
• and
• a management device configured to communicate with the communication apparatus based on a third protocol stack.

A method, comprising:

• obtaining a mapping relationship indicating a correspondence between product serial numbers (SNs) and media access control (MAC) addresses;
• obtaining a first product SN of a device;
• and
• adding, to an address list, a first MAC address corresponding to the first product SN, wherein the first MAC address is based on the mapping relationship.