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URN etd-0114109-212631 Statistics This thesis had been viewed 3280 times. Download 993 times. Author Li-Shing Huang Author's Email Address No Public. Department Computer Science and Enginerring Year 2008 Semester 1 Degree Master Type of Document Master's Thesis Language English Page Count 61 Title Detection and Reporting System for Availability of Network Services Keyword availability of network service availability of network service Abstract In this thesis, we propose five mechanisms to solve the problems that we encountered when we developed the network service availability detection system in Ming Chuan University. For effectively detecting various kinds of network services, we use ICMP echo request and TCP socket as the detection mechanism. For accurately determining the availability of network services, we use a two-way de-bouncing availability determination mechanism to improve the accuracy of the availability detection. To save the cost of sending alert messages through mobile phone systems, we use a message pool mechanism to reduce the amount of alert messages without affecting the function of notifying the administrator of unavailable network services. To improve the poor performance caused by a long list of monitored machines for unavailable network services, we use a parallel detection mechanism which loads multiple detection processes simultaneously. For enhancing the availability of the network service availability detection system itself, we use a cross campus failover configuration to keep the detection system available when extreme situations occur. Advisor Committee Tsang-Long Pao - advisor
Jin-Long Wang - co-chair
Shang-Lin Hsieh - co-chair
Files Date of Defense 2009-01-03 Date of Submission 2009-01-14