多重網路中應用多重移動式代理人之故障診斷系統

Abstract

網路應用與服務已是生活中不可或缺的一環，網路故障將對使用者及網路提供者造成許多不便與損失，因此如何快速找出網路故障的所在及原因，並迅速恢復網路服務，對於網管人員來說是個挑戰。本論文利用多重網路(Multihoming)之觀念，以多重網路介面互為輔弼，提出應用多重移動式代理人(Multiple Mobile Agents)之網路故障診斷系統，能夠更精確的診斷出故障的詳細位置及原因。此外，並針對TCP/IP的五個層級，分層逐步診斷，縮小網路故障之範圍，讓網管人員可以在任何時候任何地點均能掌握網路狀況，迅速釐清問題所在，提高網路故障管理之效率。Internet applications and services have become indispensable in modem life. Network faults will cause inconvenience and damage for users and network providers. However, it is a real challenge for network managers to find out the root cause and of the network fault, and recover the Internet services rapidly. In the paper a network fault diagnoses system based on multiple mobile agents is proposed, where the concept of multihoming is adopted. The proposed system is capable of diagnosing the position and cause of faults rapidly and accurately, by crosschecking through multiple network interfaces. Besides, the proposed system is implemented to detect and diagnose network faults layer by layer, according to the five-layer architecture in TCP/IP. Network managers are able to monitor and control the network status through the system at anytime and anywhere. Thus the possible causes of the network fault can be narrowed to speed up the diagnoses of network faults, and then improve the efficiency of network fault management.