Abstract:
1. 청구범위에 기재된 발명이 속하는 기술분야 본 발명은 통합지역관리 접속규격을 이용한 비동기전송방식 토폴로지 자동구성 방법 및 상기 방법을 실현시키기 위한 프로그램을 기록한 컴퓨터로 읽을 수 있는 기록매체에 관한 것임. 2. 발명이 해결하고자 하는 기술적 과제 본 발명은, 단순 망 관리규약(SNMP:Simple Network Management Protocol)을 이용하면서도 인터넷 주소를 갖지 않는 ATM 장치에 대해 통합지역관리접속 규격(ILMI:Integrated Local Management Interface)표준을 이용하여 ATM 장치들을 발견하고 정보를 획득 가공하여 관리자가 요구하는 관리영역 내에서 ATM 장치들을 발견할 수 있도록 한 통합지역관리 접속규격을 이용한 비동기전송방식 토폴로지 자동구성 방법 및 상기 방법을 실현시키기 위한 프로그램을 기록한 컴퓨터로 읽을 수 있는 기록매체를 제공함에 그 목적이 있음. 3. 발명의 해결방법의 요지 본 발명은, 망 관리 시스템에 적용되는 통합지역관리 접속규격을 이용한 ATM 토폴로지 자동구성방법에 있어서, 비동기전송방식(ATM : Asynchronous Transfer Mode) 장치 리스트 및 단순망 관리규약(SNMP : Simple Network Management Protocol)의 운영여부를 이용하여 비동기전송방식 토폴로지 리스트를 생성 및 저장하는 제 1 단계; 상기 저장된 비동기전송방식 토폴로지 리스트를 참조하여 단순 망관리규약과 통합지역관리 접속규격(ILMI:Integrated Local Management Interface)을 이용하여 획득한 정보로부터 비동기전송방식 스위치 토폴로지 리스트를 생성 및 갱신하는 제 2 단계; 및 비동기전송방식 토폴로지 리스트 및 비동기전송방식 스위치 토폴로지 리스트를 표시하는 제 3 단계를 포함한다. 4. 발명의 중요한 용도 본 발명은 통신망 서비스 제어 등에 이용됨.
Abstract:
PURPOSE: A boundary router assuring method for assuring a differentiated service is provided to reflect a service quality to the full requested by a far-end regardless of a traffic processing provided from each transmission network by using a per hop behavior class buffer using a traffic control unit of a boundary router. CONSTITUTION: A boundary router classifies a class for a packet inputted through a traffic control unit(S301) and checks the type of the classified class(S302). If the classified class is EF, the boundary router checks whether there is a space in an EF buffer(S303). If there is a space in the EF buffer, the boundary router assigns the classified class to the EF buffer, and if the EF buffer is full, the boundary router checks whether there is a space in a DE buffer(S306). If there is a space in the DE buffer, the boundary router assigns a portion of the DE buffer to an EF class with a high priority(S307,S308), and transmits an EF packet(S309). If the DE buffer is full, the boundary router checks whether there is a space in an AF buffer(S311). If the AF buffer is full, the boundary router discards the packet(S312). If there is a space in the AF buffer, the boundary router assigns a portion of the AF buffer to the EF class(S313,S314), and transmits the EF packet(S315). If the classified class is AF, the boundary router checks whether there is a space in the AF buffer(S317). If there is a space in the AF buffer, the boundary router assigns the AF packet(S318), and if there is no space in the AF buffer, the boundary router checks whether there is a space in the DE buffer(S319). If the DE buffer is full, the boundary router discards the corresponding packet(S320). If there is a space in the DE buffer, the boundary router assigns a portion of the DE buffer to the AF class(S322,S323), and transmits the EF packet(S333).
Abstract:
PURPOSE: An interface device and method for high-speed physical layer transmission suitable for a wireless LAN(Local Area Network) is provided to quickly and efficiently perform an interface with a wireless physical layer by composing a multiple transmission and receipt queue classified according to a transmission rate and processing data through N addressing using a module with a circular buffer type. CONSTITUTION: A demultiplexer(611) classifies inputted data into a plurality of packets according to a transmission rate and inputs the classified data to each transmission circular buffer(613a-613c) according to the control of a transmission buffer controller by the transmission rate. A multiplexer(612) transmits the data stored in each transmission circular buffer(613a-613c) to a wireless physical layer(200) according to the control of the transmission buffer controller. The transmission buffer controller controls the demultiplexer(611) and the multiplexer(612). A demultiplexer(621) classifies the data inputted through the wireless physical layer(200) into a plurality of packets according to the transmission rate, and inputs the classified data to each receipt circular buffer(623a-633c) according to the control of a receipt buffer controller(620) by the transmission rate. A multiplexer(622) transmits the data stored in each receipt circular buffer(623a-633c) to an MAC(Medium Access Control) controller(300) according to the control of the receipt buffer controller(620). The receipt buffer controller(620) controls the demultiplexer(621) and the multiplexer(622).
Abstract:
PURPOSE: A line interface statistics collecting method in a distributed processing high speed router is provided to quickly and effectively perform a line interface statistics collection request received from an operator terminal and a network management system by using a high speed router including line cards with a control processor, and stably operate the high speed router. CONSTITUTION: A data is initialized to collect a line interface statistics(S301) and comes in a standby state to wait for a statistics collection request from an operator terminal or a network management system(S302). When the line interface statistics collection request is received from the operator terminal(S303), a line card and a port number requested by the operator terminal are analyzed(S304), and a related transmission and reception counter information desired to be collected by the operator terminal is collected from control processors of the obtained line card(S305). The collected counter information is formatted to a form to be outputted to the operator terminal(S306), and the line interface statistics collection result is provided to the operator terminal(S307). When a line interface statistics collection request is received from the network management system, that is, when a message for an MIB(management information base) object data searching request is received(S308), the received message is analyzed and a PDU(Protocol Data Unit) is extracted(S309), and the requested statistics MIB is searched(S310). A related transmission and reception counter information is collected by using the searched information(S311), and the collected related transmission and reception counter information is combined(S312). The combined related transmission and reception counter information is converted into an MIB object information requested by the network management system and a PDU to be used when responding to the network management system is generated(S313). The MIB object data searching result using the generated PDU is provided to the network management system(S314).
Abstract:
본 발명은 기가비트 이더넷 기반 라우터에서의 패킷 포워딩 처리에 관한 것으로서, 기가비트 이더넷 시스템에서 기가비트 속도의 트래픽을 만족하는 빠른 포워딩을 구현하기 위해 기가비트 와이어스피드(wired-speed)를 보장하는 룩업의 결과에 대해 듀얼 포트메모리를 버퍼로 사용하고 하드웨어 방법에 의한 병렬처리형 패킷 포워딩 처리를 함으로써 실시간의 패킷 포워딩을 가능하게 하여 라우터 시스템 성능을 향상시키는 병렬처리형 3계층 패킷 포워딩 처리 방법 및 장치를 제공한다. 본 발명은 프로세싱 시간을 단축하여 기가비트 속도처리가 가능하게 하고, 룩업의 결과에 의한 패킷처리를 프로세서의 개입없이 일정 시간지연내로 보장할 수 있으며, 또 입력 프로세싱과는 별도로 병렬 처리하므로 회로의 간단화를 통한 비용 절감의 효과가 있다.
Abstract:
PURPOSE: A parallel process type 3-layer packet forwarding processing method in a gigabit Ethernet-based router and an apparatus thereof are provided to simplify a circuit and save a cost by independently perform a parallel process in the same buffer using a dual port memory as the buffer when temporally storing a packet and correcting header information and simultaneously processing the packet by a look-up result without a processor. CONSTITUTION: A packet routing central controller(203) controls an entire routing procedure irrespective of a processor. A look-up controller(204) searches a look-up to a destination IP address through a look-up table(205) by the request of the packet routing central controller(203). The look-up table(205) stores information to an IP address. A packet write controller(202) designates a storing point of an input packet. A packet correction controller(206) designates a packet correction position by a look-up result. A packet read controller(207) designates a packet address read to a host. A pointer intervener(208) intervenes between a correction write point and a read point inputted from the packet read controller(207). A buffer(209) stores an inputted packet, and is a dual port memory for performing a read and write of a common data in an inter-different port.
Abstract:
PURPOSE: A caching system for transferring simple network management information on a multi network management platform and a method thereof are provided to transfer information to a management information administrator more rapidly and effectively by transferring and managing the management information by means of a cache administrator. CONSTITUTION: Caches(204-1, 204-2,...,204-n) are installed in a management server(209). If a notice of changing information is generated from the caches(204-1, 204-2,...,204-n), an information updating device(205) changes contents of the caches(204-1, 204-2,...,204-n) according to the notice of changing information from the caches(204-1, 204-2,...,204-n). A cache management device(206) controls the caches(204-1, 204-2,...,204-n), and informs the information updating device(205) that the notice of changing information has been received.
Abstract:
PURPOSE: A network management method in an ATMARP(ATM(Asynchronous Transfer Mode) Address Resolution Protocol) server - client network using an SNMP(Simple Network Management Protocol) is provided to remotely manage various information on the ATMARP server - client by using the SNMP. CONSTITUTION: A system analyzes a protocol of a received message(101). If the received message is LIS(Logical IP(Internet Protocol Subnet)) information(103), the system retrieves an LIS table(104), and generates a corresponding SNMP(Simple Network Management Protocol) message for transmitting(120,121). If the message is client or server information(107), the system retrieves a kernel of an ATMARP(ATM(Asynchronous Transfer Mode) Address Resolution Protocol)(108), and generates a corresponding SNMP message for transmitting(120,121). If the message is virtual channel information(109), the system retrieves a virtual channel kernel(110), and generates a corresponding SNMP message for transmitting(120,121). If the message is perpetual virtual channel information(111), the system retrieves a perpetual virtual channel kernel(112), and generates a corresponding SNMP message for transmitting(120,121). If the message is interface information(114), the system retrieves the interface information(115), and generates a corresponding SNMP message for transmitting(120,121). If the message is ATM adaptation layer information(116), the system retrieves an ATM adaptation layer kernel(117), and generates a corresponding SNMP message for transmitting(120,121). If the message is interface management information(118), the system retrieves interface construction information(119), and generates a corresponding SNMP message for transmitting(120,121).
Abstract:
PURPOSE: An apparatus for synchronizing a data stream received with two phase input clocks with a transmission clock is provided which synchronizes a 125MHz data stream synchronized with two reception clocks with 125MHz transmission clock to make a new data stream and controls circuits of a transceiver with the transmission clock. CONSTITUTION: A synchronizing apparatus includes a data stream divider(41) for synchronizing a data stream received from a physical medium with the first reception clock and the second reception clock that is the inversion state of the first reception clock to divide the data stream into two data streams. The synchronizing apparatus further has a data stream selector(42) for synchronizing the two data streams using a transmission clock asynchronous with the first and second reception clocks to generate two data streams, and a combiner(43) for combining the two data streams to transmit the data stream synchronized with the transmission clock.