System and method for implementing bidirectional forwarding detection

A message sending and message technology, applied in the detection field, to achieve the effect of load reduction

Inactive Publication Date: 2008-08-20
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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  • System and method for implementing bidirectional forwarding detection
  • System and method for implementing bidirectional forwarding detection

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Embodiment Construction

[0035] The core idea of ​​the present invention is: the present invention adopts the method of combining CPU and hardware processor to realize the BFD function. Then, in a pair of network devices, the present invention assigns the sending / receiving work of the specific BFD message to the hardware processor, and the work of the CPU is only to establish and cancel the link of the BFD session between the local device and the peer device. ; Negotiate the parameters of the BFD session between the local device and the peer device. Therefore, while realizing the detection means of BFD, the load on the CPU is greatly reduced.

[0036] The implementation of the technical solution will be further described in detail below in conjunction with the accompanying drawings.

[0037] Such as figure 1 As shown, a system for implementing BFD includes a pair of network devices, that is, a local device 1 and a peer device 2 . Here, the local device 1 includes a CPU 11 and a hardware processor 1...

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Abstract

The present invention discloses a system for implementing bidirectional testing which includes terminal equipment which includes Central Processing Unit (CPU) and hardware processor and opposite terminal equipment; CPU is used for establishing and dismissing bidirectional forwarding detecting (BFD) conversational chain circuit between the terminal equipment and the opposite terminal equipment, and negotiating the BFD conversational parameter; the hardware processor starts BFD conversation between the terminal equipment and the opposite terminal equipment, and transmits BFD packet to the opposite terminal equipment, or receives BFD packet from the opposite terminal equipment after the triggering packet transmitted by CPU is received. The present invention also discloses a bidirectional testing method. The testing means BFD is realized by using the system and method of the present invention, at the same time CPU load is reduced greatly.

Description

technical field [0001] The present invention relates to detection technology, in particular to a system and method for realizing Bidirectional Forwarding Detection (BFD, Bidirectional Forwarding Detection). Background technique [0002] An increasingly important feature of the network system is that it is required to quickly detect communication failures between adjacent network equipment among the network equipment that constitutes the network system, so that an alternative channel can be established more quickly when a communication failure occurs. Switch to other links to ensure the normal operation of the network system. The slow Hello mechanism is generally adopted in the existing Ethernet, especially in the routing protocol, without the help of hardware, the detection time will be very long. [0003] With the development of communication technology, when the data rate reaches gigabits, long detection time means a large amount of data loss, and for network devices that...

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Application Information

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IPC IPC(8): H04L12/24H04L12/56H04L12/26
Inventor 张胜友张宝亚
Owner ZTE CORP
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