Data communication system, switch network plate and method

Abstract

The invention discloses a data communication system, an exchange network board, and a relative method, wherein the system comprise a plurality of line cards, and at least one exchange network board. The invention is characterized in that the exchange network board comprises an exchange chip and a relay chip, the line cards are respectively connected with the exchange chip and the relay chip. The method comprises that adding the address of a target line card into the object report, sending the report to the exchange network board, when the exchange network board receives the report, according to the target address, transferring the report to the exchange chip or the relay chip. The invention can reduce network complexity, save network cost, and improve system reliability, with little cascade line cards.

Description

Technical field [0001] The present invention relates to switching technology in the field of data communication, in particular to a multi-frame (line card frame) data communication system, a switching network board and a method. Background technique [0002] The IP network equipment system is mainly composed of two planes: a data forwarding device and a routing control device. As long as the routing control device is responsible for the processing of routing protocols, the generation of routing tables and forwarding tables, and the provision of management interfaces and other functions, the data forwarding device is mainly responsible for data packet reception, table lookup, classification, filtering, QoS processing and switching, etc. Real-time processing function. Therefore, the key to achieving multi-service support while maintaining wire-speed forwarding on high-speed interfaces lies in the design of the data forwarding device. [0003] Such as figure 1 Shown is a schematic s...

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Problems solved by technology

[0007] The inventor found in the research process that although the above networking method can achieve capacity expansion, there are still a series of problems, which are manifested in: since all the line card frames are connected to the switch frame, the data is forwarded by the switch frame, once the switch frame occurs failure, the entire system may collapse, so the system reliability is low; and when expanding to multiple line card frames, it is necessary to add a switch frame, especially when only a small number of line card frames need to be cascaded, adding a switch frame brings a high cost. the cost of

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