National Chi Nan University Study of Network Performance Measurement Based on SNMP The 8 th International Conference on Computer Supported Cooperative Work in Design Proceedings Author: Shufen Liu, Lu Han, Xinjia Zhang, Kai Nie
National Chi Nan University Outline Introduction Usability Response Time Precision Utilization Conclusion 2
National Chi Nan University Introduction Performance measurement is the base of network management Modern computer network is an integrated system – Devices – Links – Application services 3
National Chi Nan University Introduction Cont. Devices – Network device – Host device Link – Throughput – Usability – Utilization Application service – Response time 4
National Chi Nan University Usability The time of computer network system and application services could be used by user – Ex: A network runs 165 hours among 168 hours one week, the usability will be 98.21% Related redundancy – Multiple links or backup devices – SCTP Related reliability – Error rate 5
National Chi Nan University Theoretical Model of Usability 6
National Chi Nan University Realization Method of Usability Active detection – ICMP ping – SNMP poll Passive receiving notification – SNMP trap Passive is better than active – Unusable during two active requests 7
National Chi Nan University Response Time Network response time – Network congestion – Error occurs (Collision) Application service response time – Unnecessary for network performance measurement – Necessary for application performance measurement 8
National Chi Nan University Precision 9
National Chi Nan University Utilization The percentage of used capacity to usable capacity – Interface utilization – CPU utilization – Memory utilization 10
National Chi Nan University Interface Utilization 11 IF: Interface
National Chi Nan University CPU & Memory Utilization 12
National Chi Nan University Conclusion This paper introduces the important position of network measurement method in network management Briefly introduces the elements which affect network performance 13