A fault detection method and device
A fault detection and fault technology, applied in the field of computer networks, can solve problems such as the inability to determine the source of faults
Active Publication Date: 2020-07-07
BEIJING HUAWEI DIGITAL TECH
View PDF5 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
This fault detection scheme can only detect the link fault between two network devices. If the network fault is caused by the fault of the network device, it is impossible to determine which network device caused the network fault by using the existing fault detection scheme. , that is, the source of the fault cannot be determined, and corresponding measures cannot be taken to restore the network to the source of the fault.
[0004] In summary, in the solutions provided in the prior art, when a network device fails, there is a problem that the source of the failure cannot be determined
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0040] When a packet sent by a network device to another network device is lost or changed, a service failure occurs between the two network devices. Usually, there are two main reasons for a service failure between two devices: 1. a failure of a network device; 2. a failure of a link between network devices.
[0041] In the prior art, when a service failure occurs between two network devices, the usual method is to detect whether the link between the network devices is faulty by sending BFD packets, or to detect whether the link between the devices is faulty through OAM maintenance operations. whether there is a road failure, etc. This fault detection scheme can only detect whether a link between network devices fails. If the service failure is caused by the failure of the network equipment, it is impossible to determine whether the network failure is caused by the failure of the network equipment at the sending end or the failure of the network equipment at the receiving en...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
The invention provides a fault detection method and device, used for confirming the source of the fault when the network equipment fails. The fault detection method comprises the following steps: a first network device sends a first diagnostic message to a second network device through a specified interface board, and sets a loopback flag in a physical interface card of the specified interface board, wherein the loopback flag is used to indicate that the first diagnostic message is not sent to the second network device after being transmitted to the PIC and the first diagnostic message loops back through a plurality of chips of the specified interface board according to the original path; the first network device detects whether the first loopback message is consistent with the first diagnostic message, wherein the first loopback message is the message that the first diagnostic message is looped back among the plurality of chips; and the first network device determines the fault of the first network device when the first loopback message is inconsistent with the first diagnostic message.
Description
technical field [0001] The present application relates to the technical field of computer networks, in particular to a fault detection method and device. Background technique [0002] When the computer network fails, packets sent between network devices may be lost, changed or failed to be sent. The failure of the network equipment and the failure of the link between the equipment are two important reasons leading to the above service failure. [0003] Existing fault detection schemes for computer networks are usually used to detect link faults, such as by sending BFD (Bidirectional Forwarding Detection, bidirectional forwarding detection) messages to detect whether the link between devices fails, or by OAM (Operation Administration and Maintenance, operation, management and maintenance) maintenance operations to detect whether the link between devices fails, etc. This fault detection scheme can only detect the link fault between two network devices. If the network fault i...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & Authority Patents(China)
IPC IPC(8): H04L12/24
CPCH04L41/0677
Inventor 贾成跃
Owner BEIJING HUAWEI DIGITAL TECH