WO2003003238A1 - Procede de surveillance eloignee de reseau - Google Patents
Procede de surveillance eloignee de reseau Download PDFInfo
- Publication number
- WO2003003238A1 WO2003003238A1 PCT/CN2002/000305 CN0200305W WO03003238A1 WO 2003003238 A1 WO2003003238 A1 WO 2003003238A1 CN 0200305 W CN0200305 W CN 0200305W WO 03003238 A1 WO03003238 A1 WO 03003238A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- network
- mib
- management
- network management
- management center
- Prior art date
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L41/00—Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
- H04L41/02—Standardisation; Integration
- H04L41/0213—Standardised network management protocols, e.g. simple network management protocol [SNMP]
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L41/00—Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
- H04L41/06—Management of faults, events, alarms or notifications
- H04L41/069—Management of faults, events, alarms or notifications using logs of notifications; Post-processing of notifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L43/00—Arrangements for monitoring or testing data switching networks
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L43/00—Arrangements for monitoring or testing data switching networks
- H04L43/02—Capturing of monitoring data
- H04L43/022—Capturing of monitoring data by sampling
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L43/00—Arrangements for monitoring or testing data switching networks
- H04L43/10—Active monitoring, e.g. heartbeat, ping or trace-route
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L43/00—Arrangements for monitoring or testing data switching networks
- H04L43/16—Threshold monitoring
Definitions
- the present invention relates to a method for managing computer network equipment, and more particularly, to a method for managing a network device that supports a Simple Network Management Protocol (SMP: Simple Network Management Protocol).
- SMP Simple Network Management Protocol
- Network management provides an effective method for monitoring, controlling, and managing network resources, enabling computer networks to operate safely, reliably, and efficiently to achieve optimal network performance.
- SNMP Simple Network Management Protocol
- TCP / IP Transmission Control Protocol / Internet Protocol
- SNMP Simple Network Management Protocol
- SNMP uses polling to collect data information, which not only wastes valuable bandwidth resources and increases the network load, but also generates huge network management communication messages due to polling in large networks, resulting in network traffic congestion or even congestion. Suitable for managing large networks;
- the distributed management method of management process to management process is not supported, because the burden of collecting data is placed on the network management center, so that the network management station becomes a bottleneck;
- MIB management information base
- MIB-II Standard Management Information Base MIB-II (RFC1213) and proprietary management information base of each manufacturer are mainly used to provide data about equipment Data, such as device port status, information traffic, and number of error packets, for network administrators to obtain local information about a single service from these management information bases.
- the Internet Engineering Group IETF
- RMON remote network monitoring
- RMON Remote Network Monitoring
- RMON provides an efficient and useful method for monitoring the operation of the subnet. This method can reduce the communication traffic between the manager and the device, and manage the large-scale Internet network in a simple and powerful manner.
- RMON actively monitors remote devices to track and collect various traffic information connected to the device port network segment, such as the total number of packets on a network segment within a certain period of time, or the correct packets sent to a host. Total, etc.
- RMON can also perform preventive management on data equipment.
- Devices using RMON technology actively diagnose network performance and record network performance conditions. When a fault occurs somewhere on the Internet, such as congestion, the fault information can be notified to the manager in time. The manager will do the corresponding processing in order to eliminate the fault timely and accurately.
- the alarm group (alarm) of RMON cooperates with the event group (event) to realize the preventive management function.
- a network management station can configure MON for a device The alarm function, so as to monitor the management object of a certain port of the device that the network management station cares about, such as inputting the number of bytes (the name in the MIB is iflnOctets), Warn the management station when a certain threshold is exceeded.
- the management station avoids polling of various statistical information on the device, saves network bandwidth, and reduces the burden on the network management station.
- the RM0N alarm group (alarm) can meet the needs of some device monitoring, the RMON alarm group still has shortcomings: it can only monitor an independent managed object, such as the port input word mentioned earlier.
- the number of nodes (iflnOctets), while monitoring the combined information of multiple management objects is powerless. For example, if the management station wants to monitor the input error percentage of a certain port of a device, it is stipulated that when the value exceeds 10% within ten minutes, it is considered that some kind of network failure has occurred, and an alarm needs to be sent to notify the management personnel for processing.
- the input error percentage calculation expression for the interface is:
- the input error percentage of the interface iflnErrors / (iflnUcastPkts + ifinNUcastPkts).
- the above calculation formula contains three basic management object information: interface input error packets (iflnErrors), interface input unicast packets (iflnUcastPkts), and interface input non-unicast packets (iflnNUcastPkts).
- the RM0N alarm group function is difficult to monitor the operation combination expressions with multiple MIB management objects, and can only be managed using the general S MP processing method:
- the network management application issues SNMP every ten minutes Request messages to obtain relevant information and data, including iflnErrors, iflnUcastPkts, and iflnNUcastPkts; and then calculate the result of the interface input error percentage locally according to the above formula, and compare the result with a predetermined value of 10%, and send it out if it exceeds the predetermined value Alert.
- the above process not only wastes a lot of network bandwidth, but also consumes the CPU time of the equipment responsible for network management.
- a network management device often needs to manage hundreds of routers.
- Equipment if the information on the interface utilization of each router device is handled by the network management center, it will greatly waste network bandwidth, and affect the analysis and processing capabilities of the network management center, making the network management center overwhelmed.
- RM0N has another disadvantage: When the network management center sets a monitoring and alarm function for a certain device management object, the administrator can only actively cancel the alarm function. In practical applications, the network management center often only wants to use a certain monitoring and swearing function within a period of time, such as one day. However, when there are many management devices, the management staff may forget or cannot delete the The alarm function causes the device to waste valuable resources for unnecessary monitoring. Summary of the Invention
- the purpose of the present invention is to provide a simple and effective method for remote monitoring of the network that improves the RMON alarm group function in the prior art.
- the method supports the SNMP protocol, does not waste network bandwidth and consumes CPU resources of the network management center. The impact of the managed equipment is small.
- the technical solution for realizing the purpose of the present invention is: A remote network monitoring method for a computer network.
- the network management center executes a single network management protocol (SNMP), and describes the MIB management object independent of the managed device by describing the management information base (MIB) and its attributes. And comparing the statistical value of the independent MIB management object variable with a preset value to implement a remote network monitoring alarm, which is further characterized by the following steps:
- the alarm extension table is a MIB management object composed of at least 2 independent MIB management object variables and an operation combination expression.
- the network management center sends a set message instruction containing the operation combination expression to the managed device;
- C The managed device collects the value of each independent MIB managed object variable in the operation combination expression, performs operations according to the operation combination expression, compares the operation value with a threshold value preset by the network management center, and when the operation value exceeds When the threshold is preset, the processing is performed according to the steps preset by the network management center.
- the remote network monitoring method of the present invention addresses a defect in the existing technical solution, and proposes a new extended function of the RMON alarm group, which not only supports any counting and integer-type monitoring objects recorded by the network management center for the device, such as traffic information , Memory information, etc. are configured with monitoring functions, and allow the network management center to monitor the combination of variables of multiple monitoring objects in the form of multiple expressions as needed. In addition, it can also control the time to complete the monitoring, that is, after monitoring for a period of time, End the monitoring task, or continue monitoring until the management staff actively cancels the monitoring function.
- the method of the present invention can be applied to network equipment such as routers, bridges, switches, etc.
- the content to be monitored is set by the network management software running in the network management center, avoiding the polling operation of the network management center, and transferring some analysis functions to the router , Network bridges, switches and other network equipment, thereby saving network bandwidth and reducing the CPU system burden on the network management center.
- FIG. 1 is a network environment in which the present invention is actually applied
- FIG. 2 is a working flowchart of the method according to the present invention. Mode of Carrying Out the Invention
- the technical solution of the present invention is mainly applied to a computer communication network composed of a network management center running a network management application and a large number of communication devices such as routers, bridges, and switches.
- a network management center 11 that implements a single network management protocol (SNMP) and a plurality of managed objects in the network managed by the network management center 11 through setting agents are set.
- SNMP network management protocol
- These managed objects are A subnet node device or at least one network signal transmission port device that can execute the SNMP protocol in the network system.
- These subnet node devices and network signal transmission port devices include Router 12, Bridge 13 and Switch 14, and the user equipment PC is connected to the router 12 or the bridge 13 through Ethernet, and the user equipment PC The machine is also connected to the switch 14 through the backbone network 16, and the network management center 11, router 12, bridge 13, and switch 14 are connected through the network 15, so that the network management center 11 can remotely monitor a large number of managed devices 12, 13, and 14.
- the RMON alarm extension table is similar to the existing RMON alarm table management object, but a special management object is added.
- the RMON alarm extension table contains a MIB management object.
- the present invention refers to it as PriorarmVariable. It is similar to the alarmVariable object of the RMON alarm group, but the syntax type is different from the alarmVariable object.
- the syntax type of the PrialarmVariable management object is OCTET STRING, that is, when the user When you need to monitor the expressions of multiple MIB managed object variables, you can directly enter the expressions.
- the expression is a string, and the format conforms to certain convention rules, including: Supports four arithmetic operations; If OID is used to represent the MIB management object, each OID variable is in dot plus number format.
- Input error percentage Number of interface input error packets / (Number of interface input unicast packets + Number of interface input non-unicast packets), the input format is expressed as: " ⁇ 1. 3. 6. 1. 2. 1. 2. 2. 1. 14. 1 / (. 1. 3. 6. 1. 2. 1. 2. 2. 1. 11. 1+. 1. 3. 6. 1. 2. 1. 2. 2. 1. . 12. 1) ,.
- the content of the management object is first parsed. If each management object in the expression exists in the managed device agent (Agent) and the expression conforms to the four operation rules, the managed device will start Monitoring program. When the sampling interval time is reached, the sampling value of the management object (MIB) is collected and calculated according to the set requirements, and compared with the preset threshold, an alarm can be issued when the threshold is exceeded according to a certain strategy, and the manager is notified in time to take precautions deal with.
- the MIB table object of the RMON alarm extension table of the present invention also includes a management object called priorityarmStatCycle.
- the network management center can determine when to terminate the remote monitoring task by setting the management object, which can achieve permanent monitoring as well as This monitoring function can be cancelled automatically after a certain time.
- the important management content in the network management is performance management.
- the utilization of an interface is a very important evaluation index.
- the calculation expression of the utilization is:
- x and y are two different query moments. From the expression point of view, the calculation of interface utilization is still relatively complicated. Using the method of the present invention to define the above interface utilization expression with a MIB object, the network management center can be performed. Remote monitoring of managed device interface utilization.
- the resources of the device can be used to share the burden of the network management center.
- step 201 The network management center runs the RMON alarm extended network management application.
- An instruction to set the RMON alarm extension function is issued, and the management personnel issues an instruction to the related managed device through the management program, that is, sends an SNMP setRequest message to set the table object PrialamVariable of the RMON alarm extension table of the managed device; then execute Steps 202 and 203.
- the managed device obtains the foregoing instruction, the data information in the instruction message is obtained by parsing the setRequest message into a character string. Then, steps 204 and 205 are performed, and the managed device responds to the character string data.
- step 206 the managed device starts a monitoring process on the MIB management object of the RMON alarm extension table according to the application program, starts monitoring the value of the expression management object, and passes step 210 Notify the network management center that the setting is successful; after the sampling interval is reached, execute In step 207, the monitoring program calculates the current value of the expression management object (PrialamVariable) and compares it with a gate value preset by the network management center; and then executes step 208 to determine the comparison result, if the current value does not exceed the threshold Value, the sampling process ends, return to step 207, wait for the next sampling time, and if the current value exceeds the threshold, go to the next step 209; step 209, the managed device processes according to the action required by
- Such a monitoring process will continue until the network management center actively issues a command to stop the process, or the network management center pre-sets the managed object priorityarmStatCycle of the managed device. After the valid time is exceeded, the managed device automatically stops the monitoring process .
- Each device can start multiple such monitoring processes according to the needs of network management personnel, assisting the network management center to complete the required monitoring functions.
- each managed device is set by the network management center separately.
- the monitoring indicators required by the configuration include certain independent management objects (MIBs).
- MIBs independent management objects
- MIBs independent management objects
- Each device records these indicators according to the configuration.
- a certain threshold is exceeded, it actively reports to the network management center, and then the network management center can perform corresponding processing according to the report. For example, when the utilization rate of an interface frequently exceeds 90%, it indicates that the amount of network data on which the interface resides is too large, and network capacity needs to be expanded or reallocated.
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- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Computer And Data Communications (AREA)
- Data Exchanges In Wide-Area Networks (AREA)
Description
Claims
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US10/482,359 US7437453B2 (en) | 2001-06-28 | 2002-04-29 | Remotely monitoring network utilizing expression containing combination object and multiple independent objects |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN01122529.7 | 2001-06-28 | ||
CNB011225297A CN1194316C (zh) | 2001-06-28 | 2001-06-28 | 一种计算机网络远程网络监控方法 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2003003238A1 true WO2003003238A1 (fr) | 2003-01-09 |
Family
ID=4664773
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/CN2002/000305 WO2003003238A1 (fr) | 2001-06-28 | 2002-04-29 | Procede de surveillance eloignee de reseau |
Country Status (3)
Country | Link |
---|---|
US (1) | US7437453B2 (zh) |
CN (1) | CN1194316C (zh) |
WO (1) | WO2003003238A1 (zh) |
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CN101174898B (zh) * | 2007-11-16 | 2011-05-11 | 中国电信股份有限公司 | 光网络单元远程管理方法及系统 |
CN102387038A (zh) * | 2011-10-20 | 2012-03-21 | 赛特斯网络科技(南京)有限责任公司 | 基于视频检测及综合网管的网络视频故障定位系统及方法 |
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Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101174898B (zh) * | 2007-11-16 | 2011-05-11 | 中国电信股份有限公司 | 光网络单元远程管理方法及系统 |
CN102387038A (zh) * | 2011-10-20 | 2012-03-21 | 赛特斯网络科技(南京)有限责任公司 | 基于视频检测及综合网管的网络视频故障定位系统及方法 |
CN111585819A (zh) * | 2020-05-12 | 2020-08-25 | 广东电网有限责任公司电力调度控制中心 | 一种配网通信设备故障分析方法和系统 |
CN111585819B (zh) * | 2020-05-12 | 2023-05-19 | 广东电网有限责任公司电力调度控制中心 | 一种配网通信设备故障分析方法和系统 |
Also Published As
Publication number | Publication date |
---|---|
US7437453B2 (en) | 2008-10-14 |
CN1393801A (zh) | 2003-01-29 |
CN1194316C (zh) | 2005-03-23 |
US20040186693A1 (en) | 2004-09-23 |
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