**Problem 2: End-to-End Network Delay **

Latency, in general, is the round-trip time it takes to send a request and get a response. However, the end-to-end delay is the delay in a single direction. Consider the following scenario.

A packet length of 1500 Bytes is sent over the path shown in the picture below. Let’s assume we have a given propagation speed of 2.5*108 m/s. Let’s also say the router vendor told us the router processing delay is 5 ms. R1 and R2 are the routers shown in the picture.

1. What is the overall end-to-end delay for the packet to travel from ES1 to ES2? Explain every step of your calculation and discuss your answer, explaining all the terminology used.
    

ES1 Segment 1 2Mbps 5,000 km Segment 2 R1 2Mbps 4,000 km R2 Segment 3 2Mbps 1,000 km ES2