PACKET PROCESSING METHOD FOR IMPROVING ETHERNET SWITCH PERFORMANCE

摘要

PURPOSE: A packet processing method which improves Ethernet switch performance is provided to reduce the number of times a memory is accessed. CONSTITUTION: If an Ethernet packet does not include a tag or if a tag is not a VLAN(Virtual LAN) tag, information including default VLAN number is read from an L2 port table corresponding to the input port of the packet. Information required for a VLAN mapping function is read from a VLAN table(625). Port state information is read from the VLAN table with reference to a VLAN port table(630). The port state information is included when setting meta data according to the type of packet.