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Method for forming correct forwarding table through PC multicast ping packet

A forwarding table, correct technology, applied in branch offices providing special services, data exchange details, digital transmission systems, etc., can solve problems such as waste of resources, CPU unit processing power consumption, etc., to achieve the effect of convenience

Inactive Publication Date: 2015-02-04
无锡锐格思信息技术有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Now the processing method for the broadcast packet is that the MAC unit does not restrict the broadcast packet sent to the CPU unit, and let the CPU handle it by itself; for the CPU unit, even if the received broadcast packet is useless, it must be processed and discarded
When a large number of broadcast packets impact the CPU unit, it often makes the CPU unit unable to process and discard them in time, so that a large amount of processing power of the CPU unit is consumed in such useless work, and normal processing has no chance to proceed. Nowadays, high performance is often used Even in the case of broadcast impact, the CPU chip can normally process discarded broadcast packets, so the actual high performance is prepared for useless broadcast impact, wasting resources

Method used

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Embodiment Construction

[0009] The technical solution of this patent will be further described in detail below in conjunction with specific embodiments.

[0010] A method for forming a correct forwarding table through PC multicast ping packets, comprising the following steps: (1) closing the one-way broadcast from the MAC unit to the CPU unit in the register of the MAC unit; (2) first sending several A dedicated multicast ping packet; (3) In the normal ICMP packet structure, change the target MAC to a certain multicast address, such a multicast ping packet will be flooded in the network; (4) The switch and the CPU unit form Correct forwarding table to the PC unit; (5) When the CPU unit receives the flooded multicast ping packet, it processes it as a normal ping packet, and the CPU unit returns a normal pingICMP return packet to the PC, and the switch and the PC unit form a Correct forwarding table to CPU unit.

[0011] The present invention spreads the source mac and source ip of the PC unit in the ...

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Abstract

The invention discloses a method for forming a correct forwarding table through a PC multicast ping packet. Through a mode of the multicast ping packet, the source mac and the source ip of a PC unit are spread all over a network so as to form a correct forwarding table of the PC unit; and a CPU, through a ping ICMP unicast return packet, spreads the source mac and the source ip of the CPU on corresponding channels so as to form a correct forwarding table of the CPU. According to the invention, correct forwarding tables are formed for a switch and a PC without a bidirectional broadcast mode, broadcasting is no longer necessary for exchange, the CPU does not receive unnecessary broadcasting, the CPU focuses on correlation functions, idling loss of abandonment of broadcast packets is eliminated, and therefore, adoption of a high-performance CPU is unnecessary, and a general-performance CPU can be adopted; through correcting a register, an MAC unit can control broadcast flow, the realization is convenient, and the functions of the MAC unit itself are not affected.

Description

technical field [0001] The invention relates to the field of electronic communication equipment, in particular to a method for forming a correct forwarding table through PC multicast ping packets. Background technique [0002] In Ethernet switches, routers, protocol converters and instrumentation devices, separate CPU units and MAC units are often used, and the two units are connected through the CPU-MAC interface, mainly in the form of MII interface, GMII interface or Ethernet interface. The function of the unit is to complete the forwarding of Ethernet packets, and the function of the CPU unit is to receive business Ethernet packets from the MII interface, GMII interface or Ethernet interface, and process them, and provide web configuration, telnet through MII interface, MII interface or Ethernet interface Configuration and other functions of this device, the CPU unit accepts unicast, multicast and other services, network management data packets, and also accepts a large n...

Claims

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Application Information

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IPC IPC(8): H04L12/26H04L12/18H04L29/06
Inventor 刘华立杨文科沈军
Owner 无锡锐格思信息技术有限公司
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