The RUSH-2224 is an L2 switch with a capacity of 24 ports of Fast Ethernet and 2 ports of GbE. For high-performance L2 switching capacity and interworking with upper equipment, the GbE port can be implemented in a removable form and can be used as an ONU when a PON module is installed. IGMP function has been enhanced to suit the IP multicast network in the basic L2 switch function. It is designed to facilitate the use of small businesses and primary network operators.