Samsung Electronics Co., Ltd.

Jong-Sang Oh

Yong-Seok Park

Byung-Gu Choe

Su-hyun Kim

Young-Seok Kim

Young-Il Kim

Sun-Gi Kim

An apparatus adapted to transmit and receive a packet between a network processor and a packet controller includes: the packet controller receiving an input packet from an input interface; a packet buffer storing and delivering the input packet the received input packet in response to a request from the network processor; a packet queue delivering information for the stored input packet from the packet controller to the network processor; and the network processor receiving a packet from the packet buffer and delivering the packet to an output interface using information for the input packet from the packet queue.

Transmitting packets between packet controller and network processor

An apparatus, computer program and method for packet buffer management in an IP network system. The apparatus includes at least one link queue buffer, a shared buffer, a buffer state detector, and a buffer manager. The at least one link queue buffer is allocated a buffer of a packet stored in a memory. The shared buffer is excessively allocated when exceeding a minimum buffer threshold value. The buffer state detector determines whether a buffer value stored in a link queue buffer of a corresponding link exceeds a preset minimum buffer threshold value. The buffer manager sets the shared buffer to be included in the link queue buffer if the stored buffer value exceeds the preset minimum buffer threshold value.

Apparatus and method for packet buffer management in IP network system

A distributed router able to reduce occurrence of ping-pong of data and information packets within the architecture of the distributed router constructed with a main processor, a plurality of line connection units and a switching unit, is disclosed. The main processor manages a routing table, updates the routing table, and broadcasts the changes in routing information that are received. The switching unit switches packets either to the main processor or to the respective line connection units. A plurality of forwarding tables are positioned in different corresponding ones of the plurality of line connection units, to copy, store and manage a part of the routing table. A plurality of forwarding processors are positioned in different corresponding ones of the plurality of line connection units, to transmit each packet to an output port, to determine whether the output port of a packet received from the switching unit is connected to either an external router or the switching unit, and to transmit each packet to the external router when the output port is connected to the external router, and discard any packet when the output port is connected to the switching unit.

Distributed router with ping-pong preventing function and ping-pong preventing method using the same

A method for processing various numbers of ports in a network processor. A method for processing various numbers of ports in a network processor comprises the steps of: a) receiving the number N of ports from a system controller; b) allocating N&#x2212;1 number of registers for storing N&#x2212;1 number of port management information in response to the number N of ports; c) processing a packet by sequentially accessing the N number of ports; and d) after processing a packet related to a predetermined port, storing management information related to the predetermined port in a register used for the next port, and storing the management information related to the predetermined port in a first register among the N&#x2212;1 number of registers when a register for storing management information in a previous packet processing is the last (N&#x2212;1)-th register among the N&#x2212;1 number of registers.

Growing community of inventors

Suwon-si, South Korea

Jong-Sang Oh