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Method, device and system for appraisal of network reliability

A reliability and network technology, applied in the field of communication, can solve the problem that there is no recognized method for network reliability assessment.

Inactive Publication Date: 2012-04-25
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] At present, there are relatively mature methods for product-level reliability assessment, especially for hardware reliability assessment. However, for network reliability assessment, due to the complexity of telecommunication networks and the many reliability factors involved, The business is also diverse, so there is no generally accepted method for network reliability assessment in the industry

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  • Method, device and system for appraisal of network reliability
  • Method, device and system for appraisal of network reliability
  • Method, device and system for appraisal of network reliability

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] S201. Establish a test environment according to the network design scheme, and establish various network reliability test cases.

[0045] Establishing a test environment according to the network design plan includes: determining the type and quantity of devices in the network; establishing the connection relationship between the devices; configuring the service attributes and links of the devices; loading the number of users on the network, network service types and Network traffic.

[0046] Determine more than one network reliability test case by setting network failure modes, failure simulation methods and test observation points. For network reliability test case 1, corresponding to failure mode 1, fault simulation method 1 and test observation point group 1; for network reliability test case 2, corresponding to failure mode 2, fault simulation method 2 and test observation point group 2, network reliability Test case 3, corresponding to failure mode 3, failure simu...

test Embodiment 1， corresponding 1、 approach 1 and test 1； test Embodiment 2， corresponding 2、 approach 2 and test 2， test Embodiment 3

[0048] The test observation points include the following items: fault detection time, service interruption time SO, number of users affected by the fault, traffic and bandwidth loss. A failure mode corresponds to a set of test observation points,

[0049] S202. Execute the network reliability test case, and record a result of executing the network reliability test case.

[0050] In this step, record the results of executing the network reliability test case, including the parameters obtained under each of the test observation points, including the fault detection time of each device or each connection in all failure modes, and each service interruption Time SO, network fault recovery rate r, number of users affected by the fault, call loss and traffic loss, etc., as well as the total number of users, total traffic volume and total traffic in the test environment, as well as the required data for subsequent calculations other data.

[0051]S203. Determine whether all network ...

Embodiment 2

[0113] R1. Calculate the average annual business interruption time dt caused by each failure mode of each device i，k .

[0114] Device failure mode parameters include:

[0115] r i , the network failure recovery rate of device i;

[0116] SO i，k , the service interruption time when node device i occurs in failure mode k and successfully recovers automatically;

[0117] MTTR v , the average fault repair time calculated by the equipment manufacturer;

[0118] f i，k , the frequency at which failure mode k occurs at node i.

[0119] Average annual service interruption time dt caused by failure mode k of node device i i，k :

[0120] dt i，k =[r i × SO i，k +(1-r i )×MTTR v ]×f i，k

[0121] R2. Calculate the average annual service interruption time dt caused by each failure mode of each connection j .

[0122] The only connection failure mode is interruption, so the failure mode parameters include:

[0123] r j , the network failure recovery rate of connection j in...

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Abstract

The embodiment of the invention discloses a method, a device and a system for the appraisal of network reliability, which can realize the estimated appraisal of the network reliability. The method for the appraisal of network reliability comprises the steps: establishing test environment according to a network design scheme, and establishing at least one network reliability test case which includes a device fault mode, a connection fault mode, and a simulation method and test observation points of each fault mode under the network test environment; executing the test case of the network reliability, recording the result of the test case of the network reliability, the result including the result of the parameter at each test observation point; acquiring statistical parameters of the device fault mode and the connection mode of the network according to the result of the test case; and performing appraisal to the network reliability according to the statistic parameters. The inventive embodiment is suitable for the estimated appraisal of the network design scheme which is not put into operation, and suitable for the reliability appraisal to the operated network.

Description

technical field [0001] The embodiments of the present invention relate to communication technologies, and in particular to a network reliability evaluation method, device and system. Background technique [0002] The ability of a device, system or network to normally complete a specified function under specified conditions and within a specified time is called reliability. Among them, the specified conditions usually refer to the use conditions and environmental conditions, and the specified time usually refers to the specified time range. Reliability is usually measured by several indicators such as MTBF (Mean Time Between Failure), availability A (Availability), and annual downtime DT (DownTime) of equipment, systems or networks. [0003] With the continuous expansion of the telecommunication network scale and the increasing types of telecommunication services, especially under the trend of IP-based telecommunication networks, the possible losses caused by network failure...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L12/24H04L12/26
Inventor 张淑萍王熠叶志华申林飞吴山
Owner HUAWEI TECH CO LTD