Wired mesh networking method without distinguishing lan and wan ports

The invention discloses a wired mesh networking method without distinguishing a lan port and a wan port, which comprises the following steps of: installing a Controller device: connecting any port of the Controller device to a port at the lan side of an optical network unit (ONU), sending a DHCP DISCOVER detection message carrying a special field option60, replying an offer message by the ONU, and identifying the port as the wan port at the moment; if the Controller device sends a 1905 detection message and the ONU (Optical Network Unit) has no reply, the Controller device is switched from the Auto mode to the Controller mode; the Agent1 equipment is installed as follows: any port of the Agent1 equipment in the Auto mode is connected to a port on the lan side of the Controller equipment, a detection message is sent, forwarded to an optical network unit (ONU) and replied to an offer message, and the port is identified as a wan port at the moment; and the Agent1 equipment sends a 1905 detection message, and if