Performance parameters

In this scenario, we will conducts a study of various performance metrics for each scenario. The scope of metric could be global or per-node basis. These metrics will be analysed to evaluate the performance of the various dynamic routing protocols. There are huge number of data that can be collected using OPNET, here's a list of the ones we will focus on.

·         Network reliability

•   Network Convergence Duration: to determine how much time is needed for all routers to have identical routing table. The less time the better.
•   CPU Utilisation: to determine which protocol require less CPU usage.
•   Delay: to determine which protocol provide less overall end-to-end delay.
•   Bandwidth Utilisation: to determine which protocol provide less overhead.
•   Traffic dropped: to observe how well each protocol deals with network failures
•   Link Throughput, Utilisation and Queuing delay: to determine which protocol perform best regarding link metrics.

·         Non-real time application

•  FTP Download Response Time: to measure the time elapsed between sending a request and receiving the response packet  Email Download Response Time: to measure the time elapsed between requesting an email and receiving it from the network’s Email server
•  HTTP Object Response Time: to calculate the response time for each object in HTML page.

·         Real time application

•   Video Packet Delay Variation: to measure the variance among end to end delays for video packets from the time it is created to the time it is received.
•   Video End-to-end Delay: to measure the accumulated time needed by all nodes to send a video application packet to a destination node’s application layer.
•   VoIP Jitter: by definition, jitter is the variation in the time between packets arriving. The study will show which protocols provides better jitter.
•  VoIP Packet Delay Variation: to measure the variance among end to end delays for video packets from the time it is created to the time it is received
•   VoIP End-to-end Delay: to measure the total voice packets delay in the network that includes network delay, encoding/decoding and compression/decompression delays.