Optical line terminal for providing management function emulating virtual chassis switch for fiber local area network system

An optical line terminal having a plurality of ports and constituting an optical local area network (LAN) with a plurality of optical network terminals connected to the plurality of ports through a passive optical network (PON), the optical line terminal comprising:

• a memory configured to store a management program and management data;
• and
• a computing element configured to execute the management program,
• wherein the management program includes a set of virtual switch management instructions for providing a switch management environment for a single chassis-based Ethernet switch with a plurality of port extenders corresponding to the optical network terminals and being mounted thereon through a manager terminal, for receiving a switch management command, and for processing a corresponding fiber LAN management command,
• wherein the management data includes a fiber LAN modeling data, and
• wherein the management program further comprises:
• a set of management environment emulating instructions for providing the switch management environment for the single chassis-based Ethernet switch with the plurality of port extenders corresponding to the optical network terminals and being mounted thereon depending on fiber LAN modeling data and for receiving a switch management command for each of the port extenders;
• and
• a set of management command processing instructions for a fiber LAN management command corresponding to actual physical fiber LAN devices.