5 results about "Networking protocol" patented technology

Transmission process is as follows: host A of sanding and forwarding multicast data sends at least one piece of multicast data stream to host B of receiving data; in process of receiving multicast data stream, the host B monitors whether there are data of error packets or lost packets continuously; after finding out and receiving data of error packets or lost packets, the host B sends out request for reissuing packets to host C of reissuing packets in agreed address according unicast protocol; using at least one agreed address, the host C in agreed address receives the said request, and sends reissuing data of packets to host B according to unicast protocol; the host B integrates the received multicast data of containing lost packets with unicast reissuing packets so as to complete data stream or complete data stream partially. The invention solves issue of poor reliability of transmitting data in multicast protocol, and suitable to network of using multicast and unicast modes.

The invention provides a general CAN (controller area network) monitoring method based on network protocols. In the method, a configuration file technology is adopted, wherein a configuration file comprises the address, the number, the meaning, the attribute and other information of a lower controller; and an upper computer is used for establishing an interface to monitor the lower controller by calling different configuration files related to the network protocols and displaying or storing information related to equipment. The functions and the information in a software interface of the upper computer are refreshed in accordance with the changes of the configuration files, so that the equipment can be monitored based on the different network protocols by modifying the configuration files only, the monitoring requirements of the equipments with the different network protocols are met and the equipment has better generality.

The invention discloses a software and hardware cooperative programmable forwarding system, method and device, and the method comprises the steps that a programmable forwarding configuration module inthe system schedules calculation resources based on a control and configuration instruction, and enables corresponding flow processing logic to be distributed to a software forwarding function moduleand a hardware forwarding function module; the hardware forwarding function module comprises a fixed function forwarding working mode and a software definition forwarding working mode, and is used for processing a fixed function data packet in the data stream and forwarding a processing result; and the software forwarding function module is composed of a software exchange process instance, processes a data packet based on scene change in the data stream based on the software exchange process instance, and feeds back a processing result to the hardware forwarding function module for forwarding. According to the system, the configuration of the hardware forwarding function module and the software forwarding function module can be realized based on the programmable forwarding configuration module, and the processing of a new network protocol can be realized based on the software forwarding function module, so that the forwarding efficiency is improved.

The invention provides a method for implementing multi-path communications between host computers with single network interfaces, which is used for implementing the multi-path communications between a first host computer with the single network interface and a second host computer with the single network interface on a communication network. The communication network is based on a network protocol supporting the multi-path communications between multihomed host computers. The method comprises that: the first host computer transmits a network message for establishing a connection to the secondhost computer, wherein an IP address parameter domain of the network message comprises IP addresses of a virtual network interface and a real network interface of the first host computer; a transfer node processes the network message according to a forwarding policy; the second host computer receives and records the network message, and returns a response message through the same path, wherein the IP address parameter domain of the response message comprises the IP addresses of the virtual network interface and the real network interface of the second host computer; and the first host computer receives and records the response message, and then transmits other messages required by establishing the connection to the second host computer again according to the network protocol until the connection between the two host computers is established.