摘要:
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.
摘要:
An apparatus for controlling traffic congestion includes: a transmitting processor including a packet classifying unit adapted to classify packets to be processed in a receiving processor and packets to be forwarded via the transmitting processor, the transmitting processor and the receiving processor having different traffic processing speeds; a buffer adapted to store the packets to be forwarded from the packet classifying unit to the receiving processor; and the receiving processor including a token driver adapted to output the packets stored in the buffer in accordance with a token bucket algorithm in response to an interrupt signal of the transmitting processor and to transmit the packets to a corresponding application, and a monitoring unit adapted to analyze and monitor a resource occupancy rate and a traffic characteristic used by the token driver to set an amount of tokens.
摘要:
A method and apparatus and a program storage device, readable by a machine, tangibly embodying a program of instructions executable by the machine performs a method including: receiving an update message at a router, the update message including a timer value from at least one other router according to a routing protocol; extracting the timer value from the update message received from the at least one other router; and resetting the timer value in response to a difference between the extracted timer value of the at least one other router and the set timer value.
摘要:
Processing broadcast data in a mobile Ad-hoc network includes: determining if all of the broadcast packets have been received using a Latest Broadcast Count Number (NBC) stored in a neighbor table within a buffer of a pertinent node and Broadcast Count Number (BC) contained in the broadcast packets received from a transmitting node upon receipt of broadcast packets transmitted from the transmitting node. The Broadcast Count Number (BC) of the received broadcast packet is compared with a buffer size of the pertinent node if all of the broadcast packets transmitted from the transmitting node have been received. A hello packet for flushing a buffer of the transmitting node is generated and transmitted to the transmitting node, the buffer of the pertinent node is flushed, and the neighbor table of the flushed buffer is updated, if the Broadcast Count Number (BC) of the received broadcast packet exceeds the buffer size.
摘要:
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.
摘要:
Managing a Transmission Control Protocol (TCP) connection established between two applications includes providing a TCP/IP (Internet Protocol) kernel adapted to: store establishment information of the TCP connection and an established value for a TCP session connectivity check with respect to the TCP connection; create a Session Connectivity Check (SCC) message according to the establishment information and established value; transmit the SCC message to a TCP/IP kernel of another party, and determine whether or not the TCP connection is operating normally according to whether an SCC response message has been received from the TCP/IP kernel of the another party.
摘要:
Processing broadcast data in a mobile Ad-hoc network includes: determining if all of the broadcast packets have been received using a Latest Broadcast Count Number (NBC) stored in a neighbor table within a buffer of a pertinent node and Broadcast Count Number (BC) contained in the broadcast packets received from a transmitting node upon receipt of broadcast packets transmitted from the transmitting node. The Broadcast Count Number (BC) of the received broadcast packet is compared with a buffer size of the pertinent node if all of the broadcast packets transmitted from the transmitting node have been received. A hello packet for flushing a buffer of the transmitting node is generated and transmitted to the transmitting node, the buffer of the pertinent node is flushed, and the neighbor table of the flushed buffer is updated, if the Broadcast Count Number (BC) of the received broadcast packet exceeds the buffer size.
摘要:
In an apparatus for distributively processing a border gateway protocol (BGP) and a method thereof, a central processing unit does not process all tasks for processing the BGP, and distributed BGP processing units are formed in the central processing unit so that each distributed BGP processing unit manages TCP sessions with external BGP routers belonging to the distributed BGP processing unit. Information is internally transmitted in the distributed BGP processing units using a multicast scheme and a broadcast scheme so that loads can be distributed. The apparatus comprises a number of BGP routers existing externally, a BGP router corresponding to a server, and a number of distributed BGP processing units in the BGP router. The distributed BGP processing units only manage the BGP routers connected directly to each distributed BGP processing unit in accordance with an operator's policy. When each distributed BGP processing unit receives update information from the external BGP routers connected directly to it, it performs a filtering function for deciding whether or not a route is to be transmitted in accordance with an INPUT policy, a route-map function for a transmission path mapping, and a damping function for deciding whether or not the update information is to be transmitted in accordance with a threshold value when flapping occurs.
摘要:
A distributed multi-protocol label switching router determines whether at least one extra label exists in a local label pool having information on allocated labels stored therein and requests allocation of the labels in preset units in a switching control card in response to a determination that no extra labels exists in response to a label allocation request to establish at least one label switched path in a subscriber line card. The labels are allocated at a label pool have information on all labels capable of being allocated in a distributed multi-protocol label switching router stored in preset units therein in response to the label allocation request of the subscriber line card in the switching control card, and the information of the allocated labels is transmitted to the subscriber line card. A label pool in the subscriber line card is updated according to information of the allocated labels transmitted from the switching control card, and the labels are allocated in the updated label pool in response to the label allocation request in the subscriber line card.
摘要:
A distributed router includes: a number of ports adapted to be connected to peers via a network, to receive messages containing packets and entry information from the peers, and to output the packets for transmission to destinations; a switching fabric adapted to switch the packets received through the respective ports to output the packets to corresponding output ports; and at least one line card adapted to extract the entry information of the peers from the messages received via the input ports, to process the entry information according to a preset routing protocol to determine a best route, and to output the packets received from the peers through the corresponding output ports according to the best route.