Electronics and Telecommunications Research Institute

Hak Suh Kim

Byung Jun Ahn

Bup Joong Kim

Byungjun Ahn

Ki Cheol Jeon

Jae Young Kim

Young Min Kim

Woo Young Choi

Kyeong Ho Lee

Yeon Hee Lee

Boo Geum Jung

Yong Wook Ra

Hea Sook Park

Kyoung-Soon Kang

Chul Hyung Zhung

Kyoung Soon Kang

Kook Jin Nam

Hyunjoo Kang

Hae Sook Park

Gang Uk Hwang

Hyeon Je Cho

Myung Woo Lee

Provided are a MapReduce apparatus and a MapReduce control apparatus and method. The MapReduce apparatus includes a map calculator configured to perform a map calculation, a combiner configured to aggregate and summarize map calculation results of the map calculator, a rack combiner configured to aggregate and summarize map calculation results of MapReduce apparatuses connected to the same rack switch according to a policy of a MapReduce control apparatus, and a reduce calculator configured to receive the aggregated and summarized results of the combiner or the rack combiner and perform a reduce calculation.

Mapreduce apparatus, and mapreduce control apparatus and method

A method of controlling congestion of network equipment that connects networks with each other, includes determining a type of congestion based on a location of the network equipment; and identifying a network connection section having a strong possibility of occurrence of congestion based on the type of congestion, and setting a critical congestion bandwidth that is used to determine the occurrence of congestion. Further, the method includes identifying users required for equal distribution of traffic upon occurrence of congestion based on the critical congestion bandwidth; and equally distributing traffic to the identified users based on the critical congestion bandwidth, and then dropping an excess of arriving traffic over the equally distributed traffic, thereby performing avoidance of the congestion.

Method and apparatus for controlling congestion of network equipment

Routing apparatus and method for detecting a server attack are disclosed. The routing apparatus includes: a reception unit configured to receive a packet transmitted in a network; a transmission unit configured to transmit the packet along a transmission path; a memory unit configured to store data and/or information required for an operation; and a controller configured to set the transmission path of the packet in the network and perform packet switching along the set transmission path, wherein the reception unit receives server state information from servers at every certain time, the memory unit stores the received server state information, and the controller calculates a change in the state of the servers based on the received server state information, and determines that a server is attacked when a change in the state of the server is greater than a certain threshold value.

Routing apparatus and method for detecting server attack and network using the same

A memory mapping apparatus for a multi-processing unit includes at least one memory matching unit configured to perform matching between a plurality of processing units and a plurality of memories, a memory controller configured to perform access control and arbitration for the respective memories, a memory mapping unit configured to include a window map for the respective processing units, make correspond the memories to the respective processing units with reference to the window map, and assign part of the entire address region of the corresponding memory, and a window map change unit configured to change a window map for a processing unit in which a request to use the memory has occurred in response to a request to use the memory from any one of the processing units.

Method and apparatus for assigning a memory to multi-processing unit

A method and an apparatus for fairly allocating resources to network users are provided. The method for fair resource allocation to network users allows the resource allocation apparatus to collect flow information between a user terminal and a service server and aggregates the flow information based on at least one of a user terminal address, a service server address, a user terminal, a service server address, and a service. The allocation resource of the user is controlled to the predetermined recommended bandwidth by using the ratio of the aggregated flow information.

Method and apparatus for fairly allocating resource to network users

A packet forwarding apparatus forwards packets by hardware implementation in a packet switch system for an internet protocol service. In the packet forwarding apparatus, an interface transmits/receives a packet through interfacing with a data link layer. A bus operator converts the packet received from the interface by a pre-set logic. A header parser parses a header of the converted packet. A network search engine controller receives a parsed result and the packet from the header parser and controls a command for forwarding the packet by interworking with an external network search engine and a processor.

Apparatus and method for forwarding packet in packet switch system

An apparatus for processing packets in a high speed router and a method thereof are provided. The high speed router includes a forward processor and a control processor where the forward processor having an input terminal processor and an output terminal processor. The output terminal processor manages a Layer 2 Address Table by dividing the Layer 2 Address Table into a layer 2 indirect address table and a layer 2 direct address table and by managing them. The indirect address table is directly indexed in the Next-hop Table of the input terminal processor table. The direct address table is composed of a hashing table for a destination IP address. Therefore, the system efficiency can be improved by reducing the memory which is used for storing the forwarding information table occupied by the forward processor and by reducing the IPC message between the control processor and the forwarding process.

Method and apparatus for processing packet in high speed router

Growing community of inventors

Daejeon, South Korea

Hak Suh Kim