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BFD realization method and device based on chip lookup table

An implementation method and lookup table technology, which is applied in the field of network communication, can solve problems such as long data packet time intervals and affecting the speed of BFD data packet forwarding, and achieve the effect of speeding up the forwarding speed and reducing the burden

Active Publication Date: 2010-10-13
ZTE CORP
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AI Technical Summary

Problems solved by technology

[0004] The above method of searching the forwarding data table through the CPU software makes the time interval for sending data packets longer, which affects the speed of BFD data packet forwarding

Method used

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  • BFD realization method and device based on chip lookup table
  • BFD realization method and device based on chip lookup table
  • BFD realization method and device based on chip lookup table

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Embodiment Construction

[0034] It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0035] figure 2 It is a schematic flowchart of an embodiment of a BFD implementation method based on a chip lookup table in the present invention.

[0036] In this embodiment, a method for implementing BFD based on a chip lookup table includes the following steps:

[0037] Step S11, receiving the data packet sent by the CPU;

[0038] The switch chip receives the assembled data packet sent by the central processing unit (Central Processing Unit, CPU). When the data packet is a BFD data packet, its assembly process is as follows:

[0039] Step A, assembling the UDP part of the packet;

[0040] A User Datagram Protocol (UDP) encapsulation is performed on the BFD detection message through a Request for Comments (RFC) document. The RFC document is a standard document of Transmission Control Protocol / Internet Protocol...

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Abstract

The invention relates to a BFD realization method and device based on a chip lookup table. The method comprises the following steps: the data pack sent by a central processing unit (CPU) is received; when the data pack is a bidirectional forwarding detection (BFD) data pack, the BFD data pack sending port in a prestored table is obtained according to the pack header of the BFD data pack and the preset capacitate of the chip; and the sending port is used to send the BFD data pack. Correspondingly, the invention provides a BFD realization device based on the chip lookup table. The BFD realization method and device based on the chip lookup table use the chip to receive the BFD data pack and perform table lookup to realize the forwarding of the BFD data pack, thus accelerating the forwarding speed of the BFD data pack and reducing the load of CPU software lookup table in the prior art.

Description

technical field [0001] The invention relates to the field of network communication, in particular to a BFD implementation method and device based on a chip lookup table. Background technique [0002] A bidirectional forwarding detection (Bidirectional Forwarding Detection, BFD) protocol is a fast detection protocol at the Internet Protocol (Internet Protocol, IP) layer, and can detect link faults at various layers of the network. Moreover, due to the simplicity and singleness of BFD for fault detection, BFD can focus on fast fault detection and help the network to realize the transmission of voice, video and other on-demand services with good quality of service (Quality of Service, QoS), thereby helping Service providers provide customers with high reliability and high applicability analog voice signal VoIP (Voice over Internet Protocol, VoIP) and other real-time services. Therefore, the detection delay of BFD becomes an important index parameter for evaluating network devi...

Claims

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Application Information

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IPC IPC(8): H04L12/56H04L45/74
Inventor 韩辉
Owner ZTE CORP
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