[問答] udp傳輸終止原理
這是節錄課本的
The source increments the TTL field for each datagram it sends.
Thus, one of the datagrams will eventually make it all the way to the
destination host. Because thie datagram contains a UDP segment with an
unlikely port number, the distination host sends a port unreachable ICMP
message.
想請問的是
Thus 後面開始有點不太懂
為什麼port number會跟前面送的segment不一樣?
謝謝
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09/20 23:08, , 1F
09/20 23:08, 1F
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09/20 23:09, , 2F
09/20 23:09, 2F
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09/20 23:10, , 3F
09/20 23:10, 3F
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09/20 23:12, , 4F
09/20 23:12, 4F
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09/20 23:31, , 5F
09/20 23:31, 5F
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09/20 23:31, , 6F
09/20 23:31, 6F
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09/21 00:11, , 7F
09/21 00:11, 7F
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09/21 00:12, , 8F
09/21 00:12, 8F
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09/21 00:37, , 9F
09/21 00:37, 9F