小弟就讀學校對外的 gateway 是 192.192.12.172 接在台大區網的 6509 上
而校內 IP 為 192.192.121.0/24 etc.
然而
我從外面 traceroute 到學校的 router: 192.192.12.172
所走的路徑與 traceroute 到學校內的 IP 所走的路截然不同
甚至.會走到師大去,但是,
我用 192.192.12.172 or 192.192.121.238 (二個 IP 同一台)
連上 router 結果都是沒問題的...
以下是 traceroute 的結果
從 sonet
[jal@jal ~]#traceroute 192.192.12.172
traceroute to 192.192.12.172 (192.192.12.172), 64 hops max, 44 byte packets
......
4 61.64.126.177 (61.64.126.177) 152.679 ms 55.573 ms 56.812 ms
5 140.111.4.254 (140.111.4.254) 75.716 ms 36.170 ms 37.746 ms
6 140.111.230.253 (140.111.230.253) 35.667 ms 36.156 ms 35.849 ms
7 NTNU-OC3-MOE.ntnu.edu.tw (140.122.250.253) 68.674 ms 37.139 ms 59.790 ms
8 140.122.254.253 (140.122.254.253) 42.697 ms 44.422 ms 40.413 ms
9 140.122.64.253 (140.122.64.253) 177.668 ms 134.600 ms 140.122.5.253 (140.122.5.253) 37.450 ms
10 140.122.5.253 (140.122.5.253) 72.954 ms 37.223 ms 57.823 ms
11 192.192.12.172 (192.192.12.172) 40.478 ms 40.200 ms 36.765 ms
從 hinet
[jal@dns ~]#traceroute 192.192.12.172
......
8 211.20.43.57 (211.20.43.57) 51.961 ms 49.792 ms 48.376 ms
9 140.111.230.253 (140.111.230.253) 51.930 ms 51.452 ms 49.777 ms
10 NTNU-OC3-MOE.ntnu.edu.tw (140.122.250.253) 52.318 ms 56.197 ms 51.251 ms
11 140.122.254.253 (140.122.254.253) 53.548 ms 51.417 ms 50.270 ms
12 192.192.12.172 (192.192.12.172) 55.336 ms 140.122.5.253 (140.122.5.253) 49.726 ms 49.434 ms
從 sonet 到學校 router 的內部 IP
[jal@jal ~]#traceroute 192.192.121.238
......
8 211.20.43.57 (211.20.43.57) 50.488 ms 49.278 ms 49.144 ms
9 192.83.175.112 (192.83.175.112) 51.228 ms 48.471 ms 49.559 ms
10 M5.au.edu.tw (192.192.121.238) 52.019 ms 64.204 ms 52.661 ms
請問...這樣的結果到底是對還是錯呢？
感謝各位大大解謎...
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