Method implementing priority process of special packet by redirecting technique

A technology of priority processing and redirection, applied in the field of Ethernet communication, it can solve problems such as the inability to ensure smooth forwarding of packets, and achieve the effect of maintaining routing stability and avoiding communication interruption.

Inactive Publication Date: 2008-12-31
SHANGHAI BAUD DATA COMM
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  • Abstract
  • Description
  • Claims
  • Application Information

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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 mai

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  • Method implementing priority process of special packet by redirecting technique
  • Method implementing priority process of special packet by redirecting technique
  • Method implementing priority process of special packet by redirecting technique

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Embodiment Construction

[0022] In order to make the technical means, creative features, goals and effects achieved by the present invention easy to understand, the present invention will be further described below in conjunction with specific illustrations.

[0023] like figure 1 As shown, this is the working model of the current high-end Ethernet switch before using the redirection technology proposed by the present invention. Service packets of external devices and protocol packets such as STP, OSPF, and BGP arrive at the line card of the switch. Protocol packets need to be sent to the main control board by the CPU of the line card. However, due to the limited processing capability of the CPU, under the impact of a large number of service packets, some protocol packets cannot be received normally, resulting in protocol oscillation.

[0024] like figure 2 As shown, this is the working model after using the redirection technical solution for specific packets proposed by the present invention. The...

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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...

Claims

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Application Information

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IPC IPC(8): H04L12/56H04L29/06H04L45/74
Inventor 汪革苟利平王会伦
Owner SHANGHAI BAUD DATA COMM
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