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How does traceroute work?

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11y ago

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There are multiple versions of traceroute but generally it uses time to live (ttl). Send a pa let with a ttl of 1 and the next router will send back an error message with its IP address. Then send one with a ttl of 2 and the second router sends an error message with its address. Keep increasing the ttl and you end up with the addresses of all routers in the path.

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11y ago
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Q: How does traceroute work?
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