Ethernet network, standardized by IEEE 802.3, is vastly installed in Local Area Network (LAN) for\ncheaper cost and reliability. With the emergence of cost effective and enhanced user experience\nneeds, the Quality of Service (QoS) of the underlying Ethernet network has become a major issue.\nA network must provide predictable, reliable and guaranteed services. The required QoS on the\nnetwork is achieved through managing the end-to-end delay, throughput, jitter, transmission rate\nand many other network performance parameters. The paper investigates QoS parameters based\non packet size to analyze the network performance. Segmentation in packet size larger than 1500\nbytes, Maximum Transmission Unit (MTU) of Ethernet, is used to divide the large data into small\npackets. A simulation process under Riverbed modeler 17.5 initiates several scenarios of the\nEthernet network to depict the QoS metrics in the Ethernet topology. For analyzing the result from\nthe simulation process, varying sized packets are considered. Hence, the network performance\nresults in distinct throughput, end-to-end delay, packet loss ratio, bit error rate etc. for varying\npacket sizes.
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