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Method and equipment for resetting watch dog in multi-hop bidirectional forwarding detection (BFD)

A two-way forwarding detection and watchdog technology, which is applied in digital transmission systems, electrical components, transmission systems, etc., can solve problems such as unable to reset the watchdog normally, and achieve the effect of ensuring normal operation

Active Publication Date: 2013-09-11
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In view of this, the main purpose of the present invention is to provide a method and device for resetting the watchdog in multi-hop bidirectional forwarding detection, so as to solve the problem that the watchdog cannot be reset normally during the process of multi-hop BFD

Method used

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  • Method and equipment for resetting watch dog in multi-hop bidirectional forwarding detection (BFD)
  • Method and equipment for resetting watch dog in multi-hop bidirectional forwarding detection (BFD)
  • Method and equipment for resetting watch dog in multi-hop bidirectional forwarding detection (BFD)

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Embodiment Construction

[0029] The method for resetting the watchdog in multi-hop BFD of the present invention can be applied to various devices capable of realizing multi-hop BFD. Generally, a device for implementing multi-hop BFD needs to include multiple line cards, and these line cards are divided into a receiving line card for receiving BFD detection packets and a packet sending line card for sending BFD detection packets. Here, there can be one or more packet receiving line cards and packet sending line cards, and only the sending line card for establishing a BFD session includes a timer and a watchdog. refer to image 3 Shown, method of the present invention mainly comprises the following steps:

[0030] Step 301: The packet receiving line card of the device receives the detection packet sent by the peer device in the current BFD session, and obtains the packet transmission line of the device included in the session information table of the current BFD session according to the received detect...

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Abstract

The invention discloses a method for resetting a watch dog in multi-hop bidirectional forwarding detection (BFD). The method comprises the following steps of: packaging a watch dog index number of a current BFD conversation into a received detection message through a packet delivery line card of equipment; and transmitting the detection message to a packet sending line card according to the line card slot position number of the package transmitting line card so as to ensure that the package transmitting line card of the equipment resets the watch dog according to the watch dog index number in the package transmitting line card. The invention also discloses the package receiving line card, the package transmitting line card and the equipment for realizing the resetting of the watch dog in the BFD. The invention can realize the normal resetting of the watch dog when the package receiving line card of the equipment does not contain the watch dog and only the package transmitting line card contains the watch dog so as to guarantee the BFD conversation can be normally carried out.

Description

technical field [0001] The invention relates to the field of bidirectional forwarding detection, in particular to a method and device for resetting a watchdog in multi-hop bidirectional forwarding detection (BFD, Bidirectional Forwarding Detection). Background technique [0002] An increasingly important feature of network equipment is that network equipment is required to quickly detect communication failures between adjacent systems, so that when a network equipment fails, an alternative channel can be established faster or switched to another link. The BFD protocol is an international standard protocol used to achieve fast detection. Two network devices periodically send detection packets on the bidirectional channel that establishes a session between them. If a network device does not receive If the detection packet of the peer device is detected, it is considered that a link failure occurs in the bidirectional channel between the two devices. [0003] BFD detection pa...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L12/26
Inventor 姜海明
Owner ZTE CORP
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