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Traceroute —-— is a networking tool that allows you to track the route that data packets take from your device to a destination host on the network. It helps you determine which intermediate hosts (routers) are used for data transmission and what state they are in. Traceroute is an essential tool for network administrators and users who want to diagnose network problems.
How does Traceroute work?
- Sending packages: Traceroute sends a sequence of ICMP Echo Request (or UDP) packets to the destination host, increasing the TTL (Time to Live) for each packet. The TTL determines how many routers a packet can pass through before it is rejected.
- Getting answers: Each router on the path to the destination host decreases the TTL value by 1. When the TTL reaches zero, the router sends back an ICMP message indicating that the packet cannot be delivered. Traceroute receives this message and displays information about the router.
- Route recording: After receiving the responses, Traceroute displays a list of all routers through which the packet passed, including the time taken for each step.
Traceroute — is a powerful tool for analyzing and diagnosing network problems. It helps users and administrators better understand how their network is performing and where problems may be occurring.