小弟就读学校对外的 gateway 是 192.192.12.172 接在台大区网的 6509 上 而校内 IP 为 192.192.121.0/24 etc. 然而 我从外面 traceroute 到学校的 router: 192.192.12.172 所走的路径与 traceroute 到学校内的 IP 所走的路截然不同 甚至.会走到师大去,但是, 我用 192.192.12.172 or 192.192.121.238 (二个 IP 同一台) 连上 router 结果都是没问题的... 以下是 traceroute 的结果 从 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 从 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 从 sonet 到学校 router 的内部 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 请问...这样的结果到底是对还是错呢？ 感谢各位大大解谜... -- ╰╮ Υ小瓜呆的窝．脆笛酥的家Υ ╭╯ ╭╯ 作者：jal 来自：163.20.74.200 ╰╮ ╰── bbs.jal.idv.tw ──┤ｊａｌ－ＢＢＳ├── 51.56.135.91 ──╯