あっちから？こっちから？
それぞれのルーター(RTX1000/RT105e)に対して、相互にTracerouteをかけた時の経路を少し。
SoftBank(Yahoo!BB) -> KCN
(from 218.126.xx.xxx/23)
# traceroute 61.___.___.___
1 * softbank218126______.bbtec.net (218.126.___.___) 1238 ms 651 ms
2 __.__.__.__ (__.__.__.__) 1740 ms 732 ms 2018 ms
3 10.39.1.73 (10.39.1.73) 557 ms 610 ms 483 ms
4 10.39.1.193 (10.39.1.193) 333 ms 708 ms 788 ms
5 10.39.41.17 (10.39.41.17) 6931 ms * 3359 ms
6 * 10.2.193.5 (10.2.193.5) 512 ms 1276 ms
7 10.2.193.165 (10.2.193.165) 5036 ms * 312 ms
8 10.0.193.137 (10.0.193.137) 527 ms 1665 ms 481 ms
9 10.0.128.218 (10.0.128.218) 460 ms 323 ms 740 ms
10 202.232.8.177 (202.232.8.177) 558 ms 200 ms 1203 ms
11 tky008bf01.IIJ.Net (58.138.80.109) 799 ms tky009bf00.IIJ.Net (58.138.80.113) 575 ms tky001bf00.IIJ.Net (58.138.80.97) 326 ms
12 osk004bf01.IIJ.Net (58.138.81.94) 104 ms 58.138.81.170 (58.138.81.170) 3788 ms *
13 osk004bb00.IIJ.Net (58.138.81.102) 928 ms osk004bb01.IIJ.Net (58.138.81.130) 244 ms 58.138.81.110 (58.138.81.110) 1171 ms
14 * osk004ip51.IIJ.Net (58.138.106.46) 9408 ms 1186 ms
15 210.130.135.158 (210.130.135.158) 2425 ms 955 ms 4119 ms
16 * * 61.86.1._0 (61.86.1._0) 7949 ms
17 * * 61.__.___.___ (61.___.___.___) 2567 ms
18 pon___-___.kcn.ne.jp (61.___.___.___) 1111 ms 889 ms 1662 ms
KCN -> SoftBank(Yahoo!BB)
(from 61.89.xx.xxx/21)
# traceroute 218.126.___.___
1 61.___.___.___ 4.355 ms 3.981 ms 3.506 ms
2 61.___.___.___ 3.601 ms 3.499 ms 3.031 ms
3 61.86.1._7 3.630 ms 3.417 ms 3.015 ms
4 61.86.1.6_ 3.045 ms 3.528 ms 3.091 ms
5 210.130.135.157 4.012 ms 4.115 ms 3.444 ms
6 58.138.106.41 4.060 ms 4.497 ms 3.574 ms
7 58.138.81.109 16.552 ms 58.138.81.125 4.577 ms 58.138.81.101 3.957 ms
8 58.138.81.169 14.404 ms 58.138.81.93 11.357 ms 58.138.81.209 11.396 ms
9 58.138.80.110 14.237 ms 58.138.80.98 13.325 ms 58.138.80.106 13.398 ms
10 202.232.8.178 12.933 ms 13.256 ms 12.805 ms
11 * * *
12 * * *
13 * * *
14 * * *
15 * * *
16 * * *
17 * * *
18 * * *
19 218.126.___.___ 234.823 ms 250.853 ms 256.504 ms
何回やっても行きと帰りでホップ数が違う！
なんかKCN側が中でごにょごにょしてるみたい…。*1
