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Data packet forwarding controller and method

A technology of a control device and a control method, applied in the field of data communication, can solve the problems of affecting the system rate, increasing the export CPU and memory, reducing the efficiency, etc., and achieving the effects of lightening the burden, saving time, and improving the effective transmission efficiency

Inactive Publication Date: 2008-03-12
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The former will cause pressure on the next-level equipment, while the latter will increase the load on the export CPU and memory, which will reduce efficiency and affect the overall system speed

Method used

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  • Data packet forwarding controller and method
  • Data packet forwarding controller and method
  • Data packet forwarding controller and method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0042] Below in conjunction with Fig. 2 illustrate the forwarding control device of filtering error packet of the present invention:

[0043] The logical combination unit 210 performs corresponding logic AND-OR on the control signals input by the previous-level device 200 and the L1 register 220 , and combines the control signals to output as the write control signal of the L1 register 220 .

[0044] Multiple data packets can be continuously stored in the primary buffer 220 , which uses a first-in-first-out (FIFO) storage method to receive data sent from the output port of the previous device 200 .

[0045] The state register 230 forms a state word according to the information input by the first-level buffer 220, the second-level buffer 240, the packet header register 250, the header verification module 260, the packet byte counter 270, and the next-level equipment, and stores it in the state register 230. Called by the dispatcher 280.

[0046] Secondary buffer 240 adopts com...

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Abstract

The control device is able to filter out error data packet in course of retransmission by adding secondary buffer, packet head register, report heading calibrating module and packet byte counter, in addition to use buffer data packet process only. The control method can conform that the retransmission data packet is correct or not by applying the report heading calibration and the packet byte count in the meantime for the data packet sent to the secondary buffer and the error data packet will be filtered out by the secondary buffer.

Description

[0001] technical field [0002] The invention relates to the technical field of data communication, in particular to a forwarding control device and method for filtering erroneous data packets in third-layer IP switches, routers and other equipment, and is suitable for data packet switching systems. Background technique [0003] At present, for the forwarding control device and method of data packets, such as in the transmission process of data packets such as routers and three-layer switches, when it is necessary to realize cache data, change data interface type, word length and transmission rate, most of them use simple packet cache The server caches and controls the scheduling method. [0004] The structure of the data packet forwarding control device in the prior art is shown in Figure 1, which includes: [0005] Logical combination unit 110: perform corresponding logical AND or on the input control signals, and combine the output control signals as the write control si...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L12/56H04L1/00H04L12/801
Inventor 吴本寿
Owner ZTE CORP
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