TW200412755A - Network fault diagnostics system employing multi-home interfaces and multi-layer technique and method thereof - Google Patents

Abstract

The invention relates to a network fault diagnostics system employing multi-home interfaces and multi-layer technique and method thereof on basis of a mobile agent platform, which provide a user to dispatch assorted mobile agents to each designated management node and complete all items of network fault detection and diagnostics tasks. The major components comprise a web browser, a web server, a mobile agent repository, a network fault management module, a mobile agent platform, an information database, an operating system, a hardware unit and at least a network unit.

Description

V. Description of the invention (1) [Technical field to which the invention belongs] The present invention relates to "species; ^, ', Kushiro interface and multi-level technology based on dynamic agents, multiple applications, and users use various mobile Network fault diagnosis system and method, provide nodes, and move to various designated management to complete various network fault identification tasks according to the user's I agent. [Prior technology] I, Lin, Jie Lin, I, October 15, 2002, whose name is "to mobile. Wu Guo Patent No. 6, 4 6 6, 9 6 3 Bl person management system", It provides the priority of the second agent as the processing order of the error detection system, and the A agent system, the agent system can manage the order, in order to achieve the priority of the mobile agent: No. and priority The dynamic agents of the weight order all have one dagger: the manager's processing order two;; = the designated device, the mobile mobile ΐ:; :: The mobile system will cause ΐ5 tigers to be processed. In accordance with the respective priority order of the invention J Summary of the invention-the first check speed. The purpose of this invention is to speed up network failures. The second object of the present invention is that the type and the troubles are based on the fact that the person must pay attention to the schedule management work at all times. Invented the third ^ 1 ability to the toad characteristic. Is to ensure network fault management

200412755 V. Description of the invention (2) The connection failure and other factors lead to the failure of the work, which is based on the characteristics of the mobile agent to manage the network failure. The above-mentioned objects and effects of the present invention will become clearer after further explanation in conjunction with the following drawings. [Embodiment] The first diagram is a schematic diagram of a management network 10 divided from a transport network 12a " 12b. One of the concepts of modern network management is to separate a management network 10 logically or physically from the transport network 1 2a '12b. When the management network is 10 When managing multiple transport networks 1 2a '12 b at the same time, or multiple network interfaces (mu 11 ih omed) referred to in this case, at the same time, any one of the transport networks 1 2a -12 b is the backup of other transport network 12a ^ 12b. The first diagram A is a schematic diagram of a multi-level network of the first embodiment of the present invention. Generally speaking, the network structure of the seventh layer or the fifth layer, the second layer is always used as the asynchronous network parent switch (ATM switch) 140, the model is For eRunner ASX-1 0 0 0, the third layer implementation is Nortel Router 142, the model is Nortel BayNetwrk, RS 5 0 0 0 BH, the upper layer is a mobile agent platform. These three layers are sandwiched together to form the multi-level network of the first embodiment of the present invention. Check the network of this multi-level technology

Page 6 200412755 V. Description of the invention (3) The numbers of whether the level is normal or not are respectively, which is a feature of the present invention.

The first diagram is a structural diagram of a server of a network fault diagnosis system based on multiple mobile agents according to the first embodiment of the present invention. According to the present invention, a first embodiment of a network fault diagnosis system using a mobile agent applied to multiple network interfaces and multi-level technology is applicable to a plurality of computer network domains (dom in), where each computer network domain (d omai η) has at least one network node 1 2 0, such as routers and switches. The management network has at least one computer host 100 'computer host 100 has the functions of detecting network faults and managing the network, so it can also be called a network fault management system based on multiple mobile agents (Network Fault Management Systems with Multiple

Mobi le Agents support (NFMS / MMA) server, and the host computer 〇〇 has multiple network interfaces (not shown), where each network interface is different from a different computer network domain ( domain) to form a link. In addition, the host computer 100 can be embedded in the network node 120 to become a computer module of the network node 120.

According to the present invention, a network fault diagnosis system using a mobile agent (m 0bi 1 eagent) applied to multiple network interfaces and multi-level technology includes the following components: a web browser (webbr owser) 2 0, a web server 21, a mobile agent repository 22, a network fault management module 23, a mobile agent platform platform) 24. An information database

Page 7 200412755 V. Description of the invention (4) (Informal ^ on Dat abas e) 25, an operating system 26, a hardware unit 27, and at least one network unit 28, the components are described in detail in the following: A web browser 20 is connected to the user 2g. A web server (w e b s e r v e r) 2 1 communicates with a web page browser (w e b b r o w s e r) 2 0 and transmits messages. A mobile agent repository 22 is a storage medium for storing executable code of the mobile agent 220. 1. a network fault management module

Module) 23, the network fault management module 23 and the web browser (web browser) 2 0 communicate with each other and pass messages to control the mobile agent 2 2 0 for network monitoring, Functions such as fault detection, fault identification and fault notification. A mobile agent platform (mobile agent p 1 atf om) 2 4, the mobile agent platform 24 is a place that provides mobile agent 2 2 0 activities and execution functions, can be stored from the mobile agent as needed Library 22 takes the executable code of the mobile agent (1 «〇1 ^ 16 ^ 6111 :) 22〇 and executes it, or executes the mobile agent 22 0 that is not needed The executable code is stored in the mobile agent repository 22, and the unnecessary mobile agent (mobile agenOUO executable code is removed).

Page 8 200412755 V. Description of the invention (5) An Information Database 25, Information Database 25 is a network fault management system based on multiple mobile agents (N etwork) F au 11 Management Systems with Multiple Mobile Agents support5 NFMS / MM A), information database 25 provides web server (web server) 21, network fault management module (Network Fault

Management Module) 23, and mobile agent 2 2 0 active on mobile agent platform 24

After network fault diagnosis, storage and access of related data. An operating system 26 is used to provide a cross-platform programming language execution environment, and to provide a link and access interface to the information database 25. In the first embodiment of the present invention, the 'cross-platform programming language is a Java computer program, > Λ > The connection and access interface of the library 25 is the Java library connection technology. JDBC). A hardware unit 27 is used to carry the operating system 26, and is a channel through which the operating system 26 messages enter and exit. And at least one network unit 28, the network unit 28 receives the hardware unit 27 to become a channel for the hardware unit 27 to send or receive messages.

According to the present invention, a first embodiment of a network fault diagnosis system based on a mobile agent applied to multiple network interfaces and multiple layers of technology is a network fault management system based on multiple mobile agents. Both the server 'and the mobile agent platform of Fault Management Systems with Multiple Mobile Agents support (NFMS / MMA)

Page 9 200412755 V. Description of the invention (6) On a trusted host next to the National Broadband Experimental Networks (NBEN) node, and build a mobile agent (m0bile agent) on it ) Platform to run a mobile agent program. This trusted host has two network interfaces, one is the network interface connecting the National Experimental Network (ΝβΕΝ), and the other is the connection to Taiwan Research. The network interface of the network (Taiwan Research Networks' TAN et 2). The present invention uses these two network interfaces to implement a network fault diagnosis system with multiple network interfaces and multi-level technology. The second diagram is a network fault diagnosis system using multiple mobile agents applied to multiple network interfaces and multi-level technology in accordance with the present invention. Regarding the Network Fault Management Module 2 3 and functional diagram of the mobile agent platform 24. The network fault management module 23 communicates with users and transmits messages through a web browser 20. The components of the Network Fault Management Module 2 3 include: a network monitor ( networkm ο nitoring) module 2 3 0, _ fault detection modules (fau 11 detecti ο n) module 2 3 2, a fault identification module 234 and a fault notification (fau ^ notification) module Group 236, the detailed components are detailed below in this article: A network monitoring (netw 〇rkm ο nit 〇ring) module 2 3 0, the network monitoring module 2 3 0 is responsible for controlling the mobile agent 2 2 0 for network Road monitoring (network monitoring)

Page 10 200412755 V. Description of the invention (7) A fault detection (fau 11 detecti ο η) module 2 3 2 and a fault detection (fault detect i〇n) module 2 3 2 is responsible for controlling the mobile agent 2 2 0, function for fault detection. A fault identification module 234, and a fault identification module 234 is responsible for controlling the mobile agent 220 to perform the function of fault identification. And a fault notification (f a u 11 η 〇 t i f i c a t i ο η) module 2 3 6, the fault notification (f a u 1 ΐ η o t i f i c a t i ο η) module is responsible for controlling the mobile agent 220 'to perform the function of fault notification (fault notification). With the above modules, the network fault management module (Netw 〇rk F au 11 Management Module) 23 is at least one web browser (webbr 〇wser) that can communicate with and communicate with the same user 29 2 0 For two-way communication of messages. As for the mobile agent platform (mobile agent p 1 at or orm) 2 4, it includes: a mobile agent proxy server (agentpr 〇xy) 2 4 〇, mobile agent proxy server (agent proxy) 24 0 is responsible for communicating with the network fault management module 2 3, and related to the information database (ΐ nf 〇rmat 丨 〇η database) 25 and the mobile agent repository (m〇bUe agent repository) 22 Access and control the mobile agent's 2 2 0 activities, communication and execution functions, as needed from the mobile agent repository 22 to access the required mobile agent (1110 | :) 116 ^ 6111 :) 22〇 The executable code to execute, or the mobile agent (m〇b 丨 丄 e

Page 11 200412755 V. Description of the invention (8) The executable code of a g e n t) 2 2 0 is stored in the mobile agent repository 2 2. The network fault management module 23 can perform “create”, “clone”, and “dispatch” of the mobile agent 220 on the mobile agent platform 24. ), "Deactivate", "activate", "retract", "dispose" and other functions. The network fault management module 23 can be "created" on the mobile agent platform 24, so that the mobile agent 2 2 0 originally stored in the mobile agent repository 2 2 The code generates an executable entity as specified and is executable on the mobile agent platform 24 to generate an entity of the mobile agent 220. The network fault management module 23 can be "cloned" on the mobile agent platform 24 (mobi "agent platform" 24) to execute from a mobile agent 22 0 entity, that is, its own execution The code is completely copied to obtain another set of execution codes, and thus another entity of a mobile agent (220) is completely copied. The network fault management module 23 can perform "dispatch" on the mobile agent platform 24, which is an entity of the mobile agent 22 0, that is, itself The execution code is sent from one mobile agent platform (mobile agent p 1 atf〇rm) 2 to 5 to another mobile agent platform (mobile agent p 1 atf or m) by message transmission. 2 4 〇Network fault management module 23 can be used on mobile agent platform (m〇bi le

Page 12 200412755 V. Description of the invention (9) Agent platforni 24 performs "deac1; ivate", which records its current status and configuration by logging in (1 og), and temporarily stops its execution , And temporarily store the executable code of a mobile agent 2 2 0 on the disk and release the resources used by it. The network fault management module 23 can be "activated" (activa1: e) on the mobile agent platform 24 to check and update the login (10g) and restore its login records. Status and configurations, and a mobile agent (m 0bi 1 eagent) 2 2 0 executable code that was temporarily stored on the disk, provides the resources it uses, and allows it to execute, to Restore an entity of mobile agent (m obi e agent) 2 2 0. The network fault management module 23 can be “retracted” on the mobile agent platform 24, which is an entity of the mobile agent 22 0, that is, its own implementation Code, in the form of message transmission, from its current mobile agent platform 24, to the original mobile agent platform 24 to make it an entity, that is, its execution The code appears and is executed on the original mobile agent platform 24 to reach a mobile agent 2 2 0 previously dispatched to the original mobile agent platform (mobile agent platforni) 24. The network fault management module 23 can perform a "deregister" (d i s p o s e) on the mobile agent platform (m0bi le a g en t p 1 a t f r r m) 2 4

Page 13 200412755 V. Description of the Invention (ίο) The execution of mobile agent 22 0 execution code, and the executable code of a mobile agent (m 〇 bi 1 eagent) 2 2 0 is removed and And the resources used by it are permanently released to end the life cycle on the mobile agent 220. The fourth diagram illustrates the relationship between six mobile agents (m 0 bi i 1 e a g e n t) 2 2 0 with different functions according to the first embodiment of the present invention. The mobile agent 22 0 can be named according to its different functions. "Ping network monitoring agent" 2 2 0 0-"Mobile type that receives abnormal events "Trap receiving agent" 2201, "fault discovering agent" 2202, "fault identifying agent" 2 2 0 3-"network path node A "traceroute network querying agent" 220 4 and a "fault notifying agent" 2205. In the first embodiment, the “mobile agent for the connection test monitoring network” (ping network monitoring agen t) 2 2 0 0 can provide a messenger to dispatch the mobile agent 2 2 0 and move to the person who is responsible for monitoring. The node checks the connection status of this node with other nodes, which belongs to the active network 'management. This mobile agent 2 2 has the function of connection test and monitoring network, so it is called. In the first embodiment, "trap receiving agent 2201, which receives abnormal events, is responsible for receiving abnormal events from other managed nodes or trusted network management systems (t

Page 14 200412755

V. Description of the invention (π) for network fault detection, which belongs to passive network fault management. This mobile agent 2 2 0 has the function of receiving abnormal events, so it is called. In the first embodiment, the “fauit discovering agent” 2 2 0 2 is responsible for analyzing the network of the ghost set by the “ping network monitoring agent” Lubin News, or "fault-related information passed by a mobile receiving agent

To determine if there is a fault in the network, this mobile agent 2 2 0 has a fault detection function, so it is called. I In the first embodiment, the “mobile identification agent for failure identification” (f 丨 identifying agent) 22 0 3, when the “mobile agent for failure detection” found a fault condition on the network, the mobile agent 2 2 0 The negative master further identified the location where the network failure occurred. This mobile agent 22 = has a failure identification function, so it is called. 7 The first embodiment +, “traceroute network querying agent” 22% of the agent provides the mobile dispatch agent 2 2 0 to the user, and moves to the master who can lose the node In order to view the information of the road and the path passed between this node and other nodes, this mobile agent 2 2 0 has the ability to track and query network related benefits, so it is called. In the first embodiment of Luzi ’s work, “the mobile agent for failure notification not ify ing agent) 2 2 0 5 is responsible for notifying the network 瞢 w +” (fau! Ts @ 者 所 私 + status' and reminding to repair as soon as possible Network, in order to maintain the failure of the network two can be known via e-mail or Internet phone 40, normal operation, as well as voice calls or

Page 15 200412755 V. Description of the invention (12) Newsletter 4 2 was carried out. This mobile agent 2 2 0 has a fault notification function, so it is called. In short, "i au 11 discovering agent" 2 2 0 2 can pass "ping network monitoring agent" 2200 or "mobile agent receiving abnormal events" The “trap receiving agent” 2201 is activated and activated, and the “fault discovering agent” 220 2 analyzes the collected network information to determine each performance parameter ( parameter of performance measure). For each detected fault, the “fault discovering agent” 220 2 can be distinguished according to the technical characteristics of multiple network interfaces (mu 11 ih oming). Failure, or failure on the link (1 ink), the link (1 ink) is a network pipe directly connected between two points. If the "fault discovering agent | fault (fault discovering agent) 220 2 returns the node ~ failure" (η 〇 d e-f a i 1 u r e), you must check 必须 —θ

/ Dagger 4 is the one in the layered architecture of group I. The manager later noticed that the type of fault is the fault on the node. Θ & The attack is on the key (1 ink) Fault 'and where the fault occurred. All the information you ^^ and the generated information will be stored in the information database 2 5 after taking it. ^ The fifth figure is a mobile agent applied to multiple network interfaces and multi-level technologies in accordance with the present invention.

< Network Troubleshooting

Page 16 200412755

V. Description of the invention (13) The flowchart of the method includes the following steps: (A) At least one mobile agent 50 is dispatched. (B) Check if the network is faulty 5 4. Generally speaking, network faults include node faults and link faults (1 ink). Both of these faults may have individual faults in a multilayer network. And (C) using the technology of multiple network interfaces to carry out fault identification steps 5 6.

The sixth diagram is a detailed flowchart of the steps of checking the network for a fault according to the first embodiment of the present invention. According to the first embodiment of the present invention, checking whether the network is faulty 5 4 includes the following steps: (A) Select at least one parameter 5 4 0, which is determined by the value of the parameter exceeding a first threshold value. This parameter It is suitable for judging whether the network is faulty, for example: packet loss rate, transmission delay time. <

(B) Select at least one transmission network and use the technology of multiple network interfaces to detect the specified network node. The transmission network obtains the parameter value 5 4 2 and its acquisition method can select multiple transmission networks one by one. And parallel to obtain the parameter values, or to select a plurality of transmission networks in parallel (para 1 1 e 1) and obtain the parameter values. At the same time, more than one transmission network is selected and executed together to speed up the inspection. (C) Check whether the value of the parameter exceeds a first threshold 544. The first threshold is a value used to determine whether there is a network failure. In step (C), further, a warning message of the network may be judged and issued so that the network manager knows, including the following steps: (C 1) selecting at least one preset second threshold value, the second threshold value is low

Page 17 200412755 V. Description of the invention (14) is equal to or equal to the first threshold. (C 2) Check whether the value of the parameter exceeds the second threshold. And (C 3) if the value of the parameter exceeds the second threshold value, a warning message of the network is issued. (D) If the value of the parameter does not exceed the first threshold, repeat steps (A), (B), and (C) to perform a step of detecting whether the network is faulty. In addition, according to the second embodiment of the present invention, when checking whether the network is faulty, when the parameter value is determined to be lower than a first threshold value, the following steps are included: (A) selecting at least one parameter, such parameter is It is suitable for judging whether the network is faulty, for example: transmission success rate. (B) Select at least one transmission network, use multiple network interface technology to detect the specified network node, and obtain the number of parameters through the transmission network. The value can be obtained by selecting multiple transmission networks one by one To obtain the parameter values, you can also select multiple transmission networks in parallel (para 1 1 e 1) and obtain the parameter values. At the same time, more than one transmission network is selected and executed together to speed up the inspection. (C) Check whether the value of the parameter is lower than a first threshold value. The first threshold value is a value used to determine whether there is a network failure. In step (C), further, a warning message of the network may be determined and notified so that the network manager knows, including the following steps: (C 1) selecting at least one preset second threshold value, the second threshold value is Above or equal to the first threshold. (C2) Check whether the value of the parameter is lower than the second threshold. and

Page 18 200412755 V. Description of the invention (15) (C 3) If the value of the parameter is lower than the second threshold value, a warning message on the network will be issued. (D) If the value of the parameter is not lower than the first threshold, repeat steps (A), (B), and (C) 'to perform a step of detecting whether the network is faulty. The seventh diagram is a detailed flow chart of steps 6 and 6 for performing fault identification according to the first and second embodiments of the present invention using the multiple network interface technology. Step 6 includes the following steps: (A) Dispatch at least A mobile agent checks all layers of network devices 560 of a specified node through all transmission networks. (B) The mobile agent (m 0bi 1 eagent) checks whether the designated node has at least one layer of network device, and whether at least one of its interfaces is "live" 5 6 i? (The so-called "live n" means that the interface can operate normally. ) The mobile agent (m0bi le agent) 2 2 0 can check all layers of the specified node. (C) If at least one interface is π alive, the negative is sent, and a message is notified: the specified node is faulty 5 6 2. If at least one interface is ', alive' means that the specified node is not faulty, so (D) Send another mobile agent (m〇bile agent) 22 0 to locate the fault 5 6 4 and mark (1 cate) the fault link 5 6 5. The fault refers to a certain link (1 i nk). After that, a message is sent to notify: the steps of a link failure 1 6 6 6. The first embodiment of the server of the network fault management system based on multiple mobile agents of the present invention Volume A ^ An example is implemented on a Pentium 4 1.8 GHz CPU (Intel Pentium4 1.8GHz CPU), 519; # y, ο i Z Megabytes

200412755

5. Description of the invention (16) (MB) memory, and 80 gigabytes (GB) of hard disk space, the system is Red Hat Linu X 7 · 2 Edition (Red H a 1: Linu X 7 · 2), the web server 0 (web server) is Apache Server 1.3.22 version, the database uses MySQL 3.23.41 version (MySQL ν3 · 23 · 41), jDK no version (JD Κ ν 1 · 4 · 0) Uses Internet Control Message Protocol (ICMP) -based programs to detect network failures. The programs are written in Java (Java) programming language and are based on multiple mobile agents. The network fault management system is installed on each trusted host on the backbone node that connects both the National Experimental Network (NBEN) and the Taiwan Academic Networks (TANet2). In other words, this This host is multihomed. Although the Chevrolet embodiment has been used to explain the present invention, those skilled in the art need to understand that the above embodiments can be modified and changed without departing from the spirit and perspective of the present invention; the above description is only the best of the present invention Specific embodiment 'Every equivalent change and modification made in accordance with the scope of the patent application of the present invention shall fall within the scope of the patent application of the present invention.

200412755 Brief description of the diagram [Simplified description of the diagram] The first diagram is a schematic diagram of a management network (m a n a g e me n t n e t w ○ r k) after being divided from a transport network. The first diagram A is a schematic diagram of the network of the multi-level technology of the first embodiment of the present invention.

The second diagram is a structural diagram of a server (s er v e r) of a network fault management system based on multiple mobile agents according to the first embodiment of the present invention. The third figure is a functional schematic diagram of a network fault management module and a mobile agent platform using a mobile agent applied to a multiple network interface and multi-level technology in a network fault diagnosis system. < The fourth diagram illustrates the relationship among six mobile agents with different functions according to the first embodiment of the present invention.

The fifth diagram is a flowchart of a network fault diagnosis method using a mobile agent applied to multiple network interfaces and multi-level technology according to the present invention. The sixth figure is a detailed flowchart of steps for checking whether the network is faulty according to the first embodiment of the present invention. The seventh diagram is a multi-network according to the first embodiment and the second embodiment of the present invention.

Page 21 200412755 The diagram briefly explains the interface technology and detailed flowchart of the fault management steps. [Illustration of drawing number] 10 Management network 100 Computer host 12a Transmission network 12b Transmission network 120 Network node 140 Asynchronous network switch (ATM switch) 14 2 Nortel Router 14 4 Mobile agent Human platform 20 Web browser 21 Web server 22 Mobile agent repository 2 2 0 Mobile agent 2 2 0 0 Mobile agent for connectivity test monitoring network 2 2 0 1 Mobile agent receiving abnormal events 2 2 0 2 Mobile agents with fault detection

Page 22 200412755 Brief description of the diagram 2 2 0 3 Mobile agent for fault identification 2 2 0 4 Mobile agent for network path node tracking query 2 2 0 5 Mobile agent for fault notification 23 Network fault management Module 2 3 0 Network monitoring module 2 3 2 Fault detection module 2 3 4 Fault identification module 2 3 6 Fault notification module 24 Mobile agent platform 25 Information database 26 Operating system 27 Hardware unit 28 Network unit 29 User 4 0 Internet phone 4 2 Newsletter 50 Dispatch at least one mobile agent 54 Check if the network is faulty 5 4 0 Select at least one parameter

Page 23 200412755

Schematic description on page 24 542 Get the parameter value 544 No Exceed a first threshold value 56 Fault identification 560 Network device at each layer 561 Interface is " Survival M 562 Specify / r / r Point failure 564 Locate the fault location 565 Calibrate the faulty link 566 Notify a link fault

Claims (1)

200412755 VI. Scope of Patent Application ~ 1 · A network fault diagnosis system using a mobile agent (m 0bi 1 eagent) applied to multiple network interfaces and multi-level technology, the system is suitable for multiple transmission networks (trans ρ 〇rtnetw 〇rks) and at least one management network, wherein the management network may be a network physically separate from the transmission network, or may be only logically and the transmission network The network is separated, but it is a network that is "integrated into one" in the entity; the so-called "integrated into one" refers to a shared line or co-constructed in Π, ', Kushiro, and a transmission network. (Transport network) has at least one network node; the management net work has at least one computer host, the computer host has the function of detecting network failure and management network, and the computer host has a plurality of Network interface, where each network interface forms a link with a different transmission network, the computer host can be an independent device 'or a module, which is within Forms exist in the network nodes of the transmission network; including: a web browser (webbr owser), the web browser (web browser) communicates with the user; a web server (webserver), the web page The server communicates with the web browser and communicates messages; a mobile agent repository is a storage medium used to store the executables of the mobile agent Code; a network fault management module Page 25 200412755 VI. Patent Application Scope Module), the network fault management module communicates with the web browser and transmits messages to control mobile agents for network monitoring (netw 〇rkm ο nit 〇ring), fault detection (fau 11 detection), fault identification (fault identification) and fault notification (fault notification) and other functions; a mobile agent platform (mobile agent platform), the mobile agent platform system The premises providing mobile agent activities and execution functions may execute the required mobile agent (m 0bi 1 eagent) executable code from the mobile agent repository as needed, or execute The executable code of the unnecessary mobile agent (mobile agent) is stored in the mobile agent repository, and the executable code of the unnecessary mobile agent (mobile agent) is removed; an information database ( Information Database), which is a network fault management system based on multiple mobile agents gement Systems with Multiple Mobile Agents support (NFMS / MMA), the information database provides the web server, the Network Fault Management Module, and the mobile agent After the mobile agent on the mobile agent platform performs network fault diagnosis, the related data is stored and retrieved; an operating system is used to provide a cross-platform programming language execution environment and provide information and information The connection and access interface of the library; a hardware unit that hosts the operating system and provides information for the operating system 200412755 6. The scope of patent application for information in and out of the pipeline; and at least one network unit, which undertakes the hardware unit, to become a pipeline for the hardware unit to send out or to receive messages. 2 · The system described in item 1 of the scope of patent application, wherein the cross-platform programming language can be a Java (J a v a) computer programming language +. 3. It is pure as described in item 1 of the Zhongyanqing patent scope, wherein the link and access interface of the information database can be a claw-sniff database connection technology (jdbc). 4 · Prepared as described in item 1 of the scope of patent application ^ Λ ^ ^, ^ Ί & system, where the mobile agent + platform (mobile agent platfom) includes: '^ Mobile agent proxy server "Monk proxy agent server (agent ... (awnt proxy) 'The mobile management module communicates information, and the current p_loxy) is responsible for the network fault management database) and with the mobile generation, Li Hairen_Beixun database (InfwUon's mobile, communication and execution functions, according to 4, ', and control the mobile agent needed to make use of the mobile agent (m ^ h to be stored from the mobile agent Take and execute, or store the executable code of the mobile = le agent) which is not needed, and store it in the mobile agent 2. Moblle Went's executable, agent repository. 5. · If you apply Patent Scope Item 4 / Management module can be used in the mobile agent platform, the mobile agent platform Page 27 200412755 VI. Scope of Patent Application Crea " te 'is used to create a mobile agent (mobile agen t) entity. 6 · The system described in item 4 of the scope of the patent application, wherein the network fault management module, can be "clone" on the mobile agent platform (m 〇bi 1 eagentp ^ atf 〇rm) In order to completely replicate the entity of another mobile agent (mobie agent) from the entity of one mobile agent (mobile agent). 7. The system as described in item 4 of the scope of patent application, wherein the network fault management module can be dispatched on the mobile agent platform (m〇bUe agent piatf〇rm) "(dispatch) 'to dispatch on a mobile The mobile agent (mobi nie agent) on the mobile agent platform (motnle agent platform) to another mobile agent platform (mobi ^ agent platform). 8 · The system according to item 4 of the patent application, wherein the network fault management module can be used on a mobile agent platform (m〇bUe agent piatf〇rm) Enter the light u. Deactivate "(temporarily store the executable code of a mobile agent moile agent) on the disk and release its use9 · As described in item 4 of the scope of patent application The module can be used in the system of the mobile agent platform, wherein the mobile agent platform Page 28 200412755 6. Scope of patent application Perform "activation" (a c t i v a t e) to restore the entity of a mobile agent. 10. The system as described in item 4 of the scope of patent application, wherein the network fault management module can be "retracted" on the mobile agent platform to retrieve a previously dispatched one. The mobile agent (m0bi 1 eagent) summons back to the original mobile agent platform. 1 1. The system as described in item 4 of the scope of patent application, wherein the network fault management module can be "dispose" on the mobile agent platform (m 0bi 1 eagent platform) to remove a mobile The life cycle on a mobile agent ends. 1 2. The system as described in item 1 of the scope of patent application, wherein when the mobile agent has a connectivity test monitoring network function, it is referred to as a "ping network of connectivity test monitoring networks" (ping network monitoring agent) 〇1 3. The system described in item 1 of the scope of patent application, wherein when the mobile agent has the function of receiving abnormal events, it is called "trap receiving agent" ° 1 4. The system described in item 1 of the scope of patent application, wherein the mobile generation Page 29 200412755 When the limousine has the fault detection function, it is called "fault detection mobile agents" (faults ·., discovering agent) 0 1 5 · If the application specialist has a fault person "(f an 11 The system described in item 1, wherein the mobile agent identification function is called "mobile agent identifying agent for failure identification" ° = The system described in item 1 of the patent scope of the patent application, wherein the mobile agent ', 1. The same route is called the tracer 〇utenetw 〇rk querying mobile agent agent 〇Went) function, called the person "(tracer〇ute" network path node tracking query network querying 1 7 · If the person applying for a fault has a faulty person "(the system described in item 1 of the fault scope), where the mobile generation notification function is called a" mobile notification agent for fault notification "° 1 8 · — Species 1 Network fault management module (Network Faul t Management Module), including: a network minister & I network left (network mon it or i ng) module, the network monitoring board group selection; ^ & "Work%", a dynamic agent that performs network monitoring (ne ^ w 〇rkm〇int〇ring) function; so early detection (fau 11 detecti ο η) module, the fault detection Page 30 200412755 VI. The scope of patent application (fau 1 tdetecti ο η) module is a function of controlling mobile agents for fault detection; a fault identification (fau 11 identificati ο η) module, the fault identification (fau 11 identificati ο n) The module is a function that controls the mobile agent to perform fault identification (fault identification); and a fault notification (fau 11 η 〇tificati ο η) module, the fault notification (fau 1 t η otificati ο η) The module is a function of controlling mobile agents to perform fault notification; by means of the above module 'the network fault management module (Netw rkk F au 11 Management M odu 1 e) Two-way communication of messages with at least one web browser that can communicate with and communicate with users. 1 9 · A network fault diagnosis method using a mobile agent (m 0bi 1 eagent) applied to multiple network interfaces and multi-level technology, including the following steps: (A) sending at least one mobile agent (mobile agent) ); (B) check whether the network is faulty; and (C) use the technology of multiple network interfaces to carry out fault identification steps. 20 · The method as described in item 19 of the scope of patent application, wherein in step (b), check whether the network is faulty, including the following steps: (A) Select at least one parameter, which is suitable for judging the network Whether there is a fault; (B) Select at least one transmission network, using multiple network interface technology, debt 200412755 6. The network node designated by the patent application scope measurement obtains the value of the parameter through the transmission network; (c) checks whether the value of the parameter exceeds a first threshold value; (D) if the value of the parameter is not Beyond the first threshold, the steps (A), (B), and (C) are repeated to perform the step of detecting whether the network is faulty. 2 1. The method as described in item 20 of the scope of patent application, wherein the parameter can be the packet loss rate. 2 2. The method as described in item 20 of the scope of patent application, wherein the parameter may be a transmission delay time. 2 3. The method as described in item 20 of the scope of patent application, wherein in this step (B), a plurality of the transmission networks can be selected one by one and the value of the parameter can be obtained. 24. The method according to item 20 of the scope of patent application, wherein in step (B), a plurality of the transmission networks can be selected in parallel and the value of the parameter can be obtained. 25. The method as described in item 20 of the scope of patent application, wherein in step (C), further including the following steps: (A) selecting at least one preset second threshold value, the second threshold value Is lower than or equal to the first threshold; Page 32 200412755 VI. Patent application scope (B) Check whether the value of the parameter exceeds the second threshold value; and (C) If the value of the parameter exceeds the second threshold value, issue a step of warning message on the network . 26. The method according to item 19 of the scope of patent application, wherein in step (B), check whether the network is faulty, including the following steps: (A) Select at least one parameter, which is suitable for judging the network Whether there is a fault; (B) Select at least one transmission network and use the technology of multiple network interfaces to detect the specified network node and obtain the value of the parameter through the transmission network; (C) Check the value of the parameter Whether it is lower than a first threshold value; (D) if the value of the parameter is not lower than the first threshold value, repeat steps (A), (B), and (C) to detect whether the network has Failure steps. 27. The method according to item 26 of the scope of patent application, wherein in step (B), a plurality of the transmission networks can be selected one by one and the value of the parameter can be obtained. 28. The method as described in item 26 of the scope of patent application, wherein in step (B), a plurality of the transmission networks can be selected in parallel (p a r a 1 1 e 1) and the value of the parameter can be obtained. Page 33 200412755 6. The scope of patent application 29. The method as described in item 26 of the scope of patent application, wherein step (C) further includes the following steps: (A) selecting at least one preset second threshold value, The second threshold value is higher than or equal to the first threshold value; (B) checking whether the value of the parameter is lower than the second threshold value; and (C) if the value of the parameter is lower than the second threshold value, Steps to issue a network warning message. 30. The method as described in item 19 of the scope of patent application, wherein the step (C) uses the technology of multiple network interfaces to perform fault identification, including the following steps: (A) sending at least one mobile agent ( (mobile agent) checks the designated node; < (B) the mobile agent (m0bi 1 eagent) checks whether all the plural interfaces on the designated node are alive n; (C) if all the plural interfaces If neither π survives π, a message is sent to notify that the specified node is down; and (D) if at least one of the plurality of interfaces is π surviving π, then, at a node adjacent to the designated node, check the other layers of the designated node with the mobile agent (m 0bi 1 e agent); and , Send another mobile agent (mobile agent) to locate and locate the fault, the fault refers to a certain link (1 i nk), the link (1 1 nk) refers to a certain The network pipeline directly connected between the node and the designated node; after that, a message is sent to notify: the step of the link (1 ink) failure. 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