Networking

For this question, use the following topology. All links are 500 meters long. Propagation speed is 2x10^8 m/s. Transmission rates of links R3-R4 and R4-R5 are 10 Gbps. Transmission rates of all other links are 1 Gbps. There are 3 sources of traffic in this network Src1, Src2, Src3: 1) Src1 generates packets of size 2 Kb and transmits them to Dst1, 2) Src2 generates packets of size 3 Kb and transmits them to Dst2, 3) Src3 generates packets of size 5 Kb and transmits them to Dst3. Assume only these three traffics are available in the network. Each of the shared links R3-R4 and R4-R5 divides its bandwidth between three traffics based on the amount of traffic generated at each source. For instance, Src1 uses 20% of the bandwidth of these two links, which is 2Gbps. Assume there is no processing or queuing delay. Calculate the end-to-end delay for each of three traffics in the following cases.

a. Each of the 3 sources of traffic generates a message containing 1 packet.

b. Each of the 3 sources of traffic generates a message containing 125 packets.