Method implementing priority process of special packet by redirecting technique

Abstract

The invention discloses a method for realizing the priority processing of a specific message by utilizing a redirection technique. The method refers to a message processing system applied to a high-end exchanger of the Ethernet. When redirection rules are established, the method carries out data extraction to attribute fields, such as target MAC address, IP protocol type and port number in a specific protocol message, which are related to by an exchanger when data is processed, and writes the attribute fields into the menu item of an exchanging chip of a line card; the exchanging chip of the line card carries out automatic redirection to the protocol message according to the redirection rules; therefore, when the message is processed, the line card automatically transmits the specific protocol message to a main control board at high speed by an HG. After adopting the method, when the line card is impacted by messages of large flow, the exchanger still can ensure that: 1. the STP state of the port of the exchanger can be kept stably; 2. OSPF neighbors can be maintained, and route can be updated normally; 3. BGP neighbors can be maintained, and the route can updated normally.

Description

Technical field: [0001] The invention relates to the field of Ethernet communication in data communication, in particular to a method for realizing priority processing of specific messages by using redirection technology. Background technique: [0002] Boda S8500 series Ethernet high-end switch is functionally a layer 3 switch, which has all the switching and routing functions of a layer 3 switch, and has a stronger throughput capacity. In terms of physical structure, the S8500 series is different from the switch products commonly used at present: most of the current products are single-processor devices, the entire software runs on a single processor, and various chips are directly connected to the processor through the bus, processing The chip can be operated by addressing the device; the S8500 series is a multi-processor device. In addition to the processor on the main control board, each line card also has its own processor. The chips on each line card can only be contro...

AI Technical Summary

Problems solved by technology

However, in the case of a large number of service packets impacting the line card, if these packets are still received by the line card CPU and forwarded to the main control board, it is inevitable that due to the limitation of the processing capacity of the line card CPU, the smooth forwarding of the packets cannot be ensured.

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