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Equipment for retransmitting data packet between different buses and its retransmitting method

A forwarding device and data packet technology, applied in the field of communication

Inactive Publication Date: 2009-02-18
BEIJING ELECTRIC POWER ECONOMIC RES INST +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Judging from the current application situation, there is no device that directly connects these two buses so that data packets can be freely forwarded between two different buses.

Method used

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  • Equipment for retransmitting data packet between different buses and its retransmitting method
  • Equipment for retransmitting data packet between different buses and its retransmitting method
  • Equipment for retransmitting data packet between different buses and its retransmitting method

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Embodiment Construction

[0025] The following illustrates how the present invention realizes the function of forwarding data packets between different buses through the embodiment of the device and method of the present invention and the introduction of EHIBUS and IXBUS.

[0026] The forwarding device of the present invention can connect a layer-2 switching module using EHIBUS to a layer-3 processing module using IXBUS, and the invented hardware logic enables bidirectional forwarding of data packets between the two buses. Its implementation block diagram and the signal relationship between each module are as follows: figure 1 shown. The entire forwarding device includes four modules: an IXBUS interface module, a bus control module, a transceiver dual-port RAM module, and an EHIBUS interface module. The IXBUS interface module is connected to the IX bus, and the EHIBUS interface module is connected to the EHI bus. The transponder is connected with the outside by IXBUS signal and EHIBUS signal. The bus...

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PUM

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Abstract

The present invention relates to an equipment for retransmission of data packet between different buses and method. Said retransmission equipment includes IXBUS interface module, bus control module, transceiving dual port RAM module, EHTBUS interface module, and its method includes the following steps: at the time of reading data firstly reading interrupt register of EHI, according to the result of RX interruption definine treatment of correspondent packet, utilizing EHT interface to read the data packet information into transceiving dual port RAN, and transferring the defined correspondent address information and packet head data into the transceiving dual port RAM, then utilziing IXBUS interface to notifying it to network processor to continuously read data from transceiving dual port RAM. Beside, said invention also provides the steps for writing data.

Description

technical field [0001] The invention relates to communication technology, in particular to a device and a method for forwarding data packets on two different buses, IXBUS (network processor dedicated bus) and EHIBUS (external hardware interface bus). Background technique [0002] Due to the development of the Internet and the application of centralized servers in the current campus network, enterprise network, and metropolitan access network, the traffic model has changed from the original 80 / 20 rule to the new 20 / 80 rule, that is, 20% of the traffic is to Local workgroup LAN, and 80% of the traffic needs to flow out of the local network. The new traffic model requires the network to provide more efficient processing capabilities above the third layer, and the pure second layer switch will move to the edge of the network. On the other hand, due to the scientific nature of dividing working groups by function and the popularity of mobile office, virtual local area network (VL...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L12/54H04L12/46H04L49/115
Inventor 路晖邵国齐文宁
Owner BEIJING ELECTRIC POWER ECONOMIC RES INST