• Title/Summary/Keyword: Router

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Study of Router Advertisement application plan in IPv6 router (IPv6 라우터에서의 Router Advertisement 적용 방안에 관한 연구)

  • Shin, Young-Soo;Yang, Mi-Jeong;Gang, Yu-Hwa;Kim, Tae-Il
    • Proceedings of the KIEE Conference
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    • 2005.10b
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    • pp.469-471
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    • 2005
  • Paper searches Neighbor Discovery Protocol's IPv6 address AutoConfiguration function that is IPv6's point technology. Also, I study plan to apply Router Advertisement function to Router. Router is formed whole system by Routing Process Card that do manager and Line Card that take charge of Packet Forwarding. Present plan that embody Router Advertisement function to Line Card.

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The Low Power Algorithm of ZigBee Router for Non Beacon Enabled PAN (Non Beacon Enabled PAN 환경에서 ZigBee Router의 저전력 알고리즘)

  • Yoon, Sung-Kun;Park, Su-Jin;Lee, Ho-Eung;Park, Hyun-Ju
    • 한국HCI학회:학술대회논문집
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    • 2008.02a
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    • pp.280-285
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    • 2008
  • ZigBee is Low Power and Low Data Rate Wireless Communication protocol. It apply to much Ubiquitous Sensor Network. ZigBee PAN is two type PAN. One is Beacon Enabled PAN, the other is Non Beacon Enabled PAN. To support Low Power in Non Beacon Enabled PAN, End-Device enter Active status at End-Device's wishing time and send a data. So, Router does not know End-Device sends a data time. To solving this problem, Router must always exist to Active status. In this case, Router receive a power supply always in Non Beacon Enabled PAN. But Router does not receive a power supply always, Router can not normal operation, such as Router use a battery. To solve this problem, Router will be support low power. In this paper, we will present Router's Low Power Algorithm. And we suggest 'PAN Time'. Device use 'PAN Time' for PAN synchronous. Router using Low Power Algorithm can be enter to inactive status. So Non Beacon Enabled PAN of Router support the low power mode Therefore Router does not receive a power supply always, Router can normal operation.

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On the Technology for High-speed Router Design (고속 라우터 기술)

  • 주성순
    • Proceedings of the IEEK Conference
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    • 1999.11a
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    • pp.105-108
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    • 1999
  • In this paper, we define the high-speed router as a router, which can support aggregated ports over 25Gbps, and provide issues and trends in high-speed router design. We propose design considerations on IP packet forwarding, switching fabric, packet scheduling and buffer management, network resource reservation, and router operation and administration.

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A Multi Router Support Mechanism in 6LowPAN (6LowPAN 에서 멀티 라우터 지원 방법)

  • Jung, Seuk;Lim, Chae-Seong;Jung, Won-Do;Yoo, Seung-Wha;Roh, Byeong-Hee;Kim, Ki-Hyung
    • 한국정보통신설비학회:학술대회논문집
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    • 2007.08a
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    • pp.279-282
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    • 2007
  • Typically a wireless sensor network consists of a number of nodes that sense surrounding environment and collaboratively work to process and route the sensing data to a sink or gateway node. We propose an architecture with support of multiple routers in IPv6-based Low-power Wireless Personal Area Network (6LoWPAN). Our architecture provides traffic load balancing and increases network lifetime as well as self-healing mechanism so that in case of a router failure the network still can remain operational. Each router sends its own Router Advertisement message to nodes and all the nodes receiving the messages can select which router is the best router with the minimum hop-count and link information. We have implemented the architecture and assert our architecture helps in traffic load balancing and reducing data transmission delay for 6LoWPAN.

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A Study on the Improvement of Transmission Efficiency for Multimedia Service Quality (멀티미디어 서비스 품질의 전송 효율성 향상을 위한 연구)

  • 문호선;하동문;김용득
    • Proceedings of the IEEK Conference
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    • 2002.06e
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    • pp.83-86
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    • 2002
  • In this paper while a router is routing all packet to the next hop, it inspects whether there is congestion on this current hop router or not and if the router discovers that it has some congestion, it informs that the packet is experienced to congestion. The packet arrived to next hop including some information about the congestion is processed first and it has wider bandwidth than another packet The amount of congestion is recorded to the DS field of IP header by congestion experience level. In the next hop when the packet including the congestion information is routed, the standard packet dropping ratio of the current router is changed in proportion to congestion experience that is recorded in IP header on of that. When the packet that has experienced congestion before is arrived, the router extends the drop threshold value not to drop the packet. It mean that transferring the audio or video stream, if the packet is already experienced the congestion in another hop, the router can provide the better service quality about 15∼25% than another.

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Implementation and Performance Evaluation of a Linux-based Diffserv Router (Linux기반의 Diffserv 라우터 구현 및 성능 분석)

  • 황진호;김영한;신명기
    • Journal of KIISE:Information Networking
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    • v.29 no.6
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    • pp.706-711
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    • 2002
  • In this paper, we implement a diffserv-capable router on the linux system and evaluate its performance. The router supports the packet marking for the input finks that is different from the previous implementation. The edge diffserv-capable router can guarantee the performance of each class, even in a congested condition. We compare the performance of the diffserv-capable router with that of the normal router in terms of PDBs (per domain behaviors), which are defined with traffic conditioning rules and PHBs (per hop behaviors).

OATM/WDM Optical Access Network Using Header Decoder-Based Router for Next-Generation Communications

  • Park, Kihwan
    • Journal of the Optical Society of Korea
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    • v.20 no.3
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    • pp.335-342
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    • 2016
  • We demonstrate an optical asynchronous transfer mode/wavelength division multiplexing (OATM/WDM) optical access network, using a router based on an optical header decoder to conduct next-generation communications. The router consists of a decoder or hardware analysis processing of the header bit and switches. The router in the OATM/WDM optical access network is a key technology by which to satisfy subscribers’ requests, including reliability, cost efficiency, high speed, large-capacity transmission, and elevated information security. In this study, we carry out experiments in which a header decoder delivers to 16 and 32 subscribers with a single wavelength in the router. These experiments confirm the decoder’s successful operation via hardware using 4 and 5 header bits. We propose that this system may significantly contribute toward the realization of an optical access network that provides high-quality service to subscribers of next-generation communications.

A Study on the Performance Analysis of a High-Speed ATM Router (고속 ATM 라우터의 성능 분석에 관한 연구)

  • 조성국
    • Journal of the Korea Society of Computer and Information
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    • v.6 no.1
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    • pp.74-81
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    • 2001
  • In this paper. the architecture of a high-speed ATM router using ATM switch is studied and the performance of the high-speed ATM router is analyzed through simulation. The high-speed ATM router using ATM switch is able to reduce the load of router and the processing time of a packet in the router. The size of router buffers has been studied through simulation processes for the analysis of performance capacity in due course of making changes in routing time(RT), which is the performance capacity parameters of high-speed ATM routers, flow table size(FS), flow live time(FT) and input circuit efficiencies. The result of this study can be used as the source material for analyzing the suitability of equipment in upgrading networks and applying high-speed ATM routers by using ATM switches.

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An Anycast Routing Algorithm by Estimating Traffic Conditions of Multimedia Sources

  • Park, Won-Hyuck;Shin, Hye-Jin;Lee, Tae-Seung;Kim, Jung-Sun
    • Proceedings of the Korean Institute of Intelligent Systems Conference
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    • 2003.09a
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    • pp.213-215
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    • 2003
  • Multimedia has to carry data of heterogeous types. Multicast communication techniques can supply the most appropriate infrastructures to such multimedia. Of many multicast protocols, the core based tree (CBT) protocol is the most concentrative studies are conducted on. The CBT places a core router at center of the shared tree and transfers data through the tore router. However, the CBT has two problems due to centralizing all network traffics into a core router. First it can raise bottleneck effect at a core router. Second, it is possible to make an additive processing overhead when core router is distant from receivers. To cope with the problems, this paper proposes an intelligent anycast routing protocol. The anycast routing attempts to distribute the centralized traffic into plural core routers by using a knowledge-based algorithm. The anycast routing estimates the traffic characteristics of multimedia data far each multicast source, and achieves effectively the distributing that places an appropriate core router to process the incoming traffic based on the traffic information in the event that request of receivers are raised. This method prevent the additional overhead to distribute traffic because an individual core router uses the information estimated to multicast sources connected to oneself and the traffic processing statistics shared with other core neuters.

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Design of Traceback System using Selected Router (선택적 라우터를 이용한 역추적 시스템의 설계)

  • Lee, Jeong-Min;Lee, Kyoon-Ha
    • Convergence Security Journal
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    • v.3 no.3
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    • pp.91-97
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    • 2003
  • As increasing of Internet user and fast development of communication, many security problems occur. Because of Internet is design and development for speed not security, it is weak to attack from malicious user. furthermore attack is more developed to have high efficiency and intelligent. We proposed effective traceback system in network and consider that ability of constitution. Traceback by Selected Router system is consists of managed router and manager system. Selected router marks router ID to packet which passing selected router, and use this router ID for traceback and filtering. Consequently this system reduce damage of attack.

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