Saturday, May 10, 2025

Traveling through a Network

 When I pinged three different websites—google.com, google.jp, and google.eu—I observed firsthand how data is sent across multiple networks before reaching its destination. Each packet travels through various routers, also called hops, and the time it takes for the packet to go from my computer to the destination and back (roundtrip time) depends heavily on the network path and physical distance.

The ping results showed that packets traveling to google.com had the shortest roundtrip time, averaging around 20 milliseconds, while packets traveling to google.jp and google.eu had significantly higher roundtrip times, often exceeding 60 milliseconds. Similarly, traceroute results revealed that the path to google.com had fewer hops, while paths to google.jp and google.eu required many more hops. This makes sense because google.com servers are located geographically closer to my location in the United States, while the other two are overseas, requiring more transfers between routers and across different international networks.

The ping and traceroute commands are valuable tools for troubleshooting internet connection problems. For example, if a website is slow or unreachable, using ping can determine if packets are being lost or if there is a high delay. Traceroute can then help pinpoint where along the path the connection is failing or slowing down, whether it’s at the local network, an internet service provider’s (ISP) node, or a distant network. There are a few reasons why a ping request or traceroute command might time out or return an error. First, some routers and firewalls are configured to block ICMP packets (which ping and traceroute use) for security reasons, preventing a response. Second, network congestion or hardware failure along the route can cause timeouts if the packets cannot reach their destination or are significantly delayed.


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Google.jp

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Google.eu

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