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Flow mirror image method

A mirroring and identical technology, applied in the field of flow mirroring, can solve problems such as insufficient capacity, confusion, disadvantages, etc., and achieve the effect of reducing traffic

Inactive Publication Date: 2005-02-16
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The present invention is to overcome the port mirroring technology to mirror all the traffic of the mirroring source port to the mirroring destination port, so that the traffic received by the mirroring destination port is too large, and too much normal traffic is mixed, which is not conducive to the analysis of the problem, and port mirroring The method is not enough to analyze the information above the IP layer, and provides a flow that can greatly reduce the traffic of the mirror destination port, which is conducive to improving the accuracy of problem analysis, and can analyze the information above the IP layer. mirror method

Method used

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Embodiment Construction

[0020] The present invention will be further described below in conjunction with the drawings and specific embodiments.

[0021] The flow mirroring method of the present invention adopts a customized flow as the source flow of the mirroring, and the flow can be any of MAC flow, IP flow, TCP / UDP flow and application layer protocol flow.

[0022] MAC flow is a series of MAC frames with the same characteristics that use the characteristics of MAC frames, including 1) MAC flow based on the source and destination address of the MAC, including the source MAC address is specific, the destination MAC address is any MAC flow, the source The MAC address is arbitrary and the destination MAC address is a specific MAC flow, or it can be 3 types of MAC flows with a specific source MAC address and a specific destination MAC address; 2) MAC flow based on VLAN ID , That is, the MAC flow belongs to a specific VLAN; 3) Priority-based MAC flow, that is to say, the MAC flow belongs to the same priorit...

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Abstract

The purpose of the method is to reduce flux at mirror target port, raise accuracy of analyzing question, and analyze information above IP layer. The method includes steps: (1) configuring stream items of mirror source in stream match table; (2) configuring any port of device as mirror target port; (3) when a port except the target port receives a data frame, stream match operation is carried out first; if operation of stream match finds out the data frame belongs to a matched stream, then the data frame is copied; after the data frame is copied, the original data frame is switched to normal data forwarding flow, and the copied data frame is sent to mirror target port directly to output; if operation of stream match finds out the data frame does not belong to a matched stream configured, stream mirror operation is ended, and normal data forwarding flow is carried out.

Description

Technical field [0001] The invention relates to a flow mirroring method, in particular to a flow mirroring method in Ethernet switches, elastic packet ring switches, and routers in the field of data communication. Background technique [0002] Mirroring is a basic function of the Ethernet switch. Its main function is to use a port of the Ethernet switch as a peeping port, and connect a protocol analyzer to this port to monitor the reception of one or more ports in the switch And the situation of sending data frames. At present, the Ethernet switch adopts the method of port mirroring, that is, configure a mirrored destination port, which is connected to a protocol analyzer, and configure one or more mirrored source ports. For the process of port mirroring, see figure 1 , The data frames received on these ports or the data frames forwarded from these ports are all copied at the same time, and this copy is sent to the destination port of the mirror. Sin...

Claims

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Application Information

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IPC IPC(8): H04L12/08H04L12/28H04L29/02
Inventor 俞杰李振刚马开
Owner ZTE CORP
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