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这是一条镜像帖。来源:北邮人论坛 / communications / #14599同步于 2010/8/31
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Communications机器人发帖

问个小问题,能ping通,但traceroute却不能通,为啥?

hman
2010/8/31镜像同步1 回复
下面是我的log。 $traceroute www.baidu.com traceroute to www.baidu.com (119.75.217.56), 30 hops max, 60 byte packets 1 10.116.176.1 (10.116.176.1) 502.610 ms 502.597 ms 503.162 ms 2 reserve.cableplus.com.cn (219.233.243.173) 503.242 ms 503.302 ms 503.309 ms 3 reserve.cableplus.com.cn (219.233.238.109) 503.222 ms * * 4 reserve.cableplus.com.cn (211.154.72.189) 503.082 ms 503.090 ms 503.100 ms 5 reserve.cableplus.com.cn (211.154.86.81) 503.249 ms 503.257 ms 520.767 ms 6 reserve.cableplus.com.cn (211.154.64.105) 503.183 ms 773.857 ms 773.869 ms 7 reserve.cableplus.com.cn (219.233.238.217) 953.521 ms 974.947 ms 974.958 ms 8 202.96.222.77 (202.96.222.77) 974.967 ms 975.025 ms 975.036 ms 9 61.152.81.137 (61.152.81.137) 974.947 ms 975.030 ms 975.038 ms 10 61.152.86.46 (61.152.86.46) 975.048 ms 975.057 ms 975.079 ms 11 202.97.34.149 (202.97.34.149) 1031.419 ms 1031.431 ms 1031.405 ms 12 220.181.16.50 (220.181.16.50) 1031.436 ms 361.470 ms 952.991 ms 13 * * * 14 * * * 15 * * * 16 * * * 17 * * * 18 * * * 19 * * * 20 * * * 21 * * * 22 * * * 23 * * * 24 * * * 25 * * * 26 * * * 27 * * * 28 * * * 29 * * * 30 * * * [root@~] $ping www.baidu.com PING www.a.shifen.com (119.75.217.56) 56(84) bytes of data. 64 bytes from 119.75.217.56: icmp_seq=1 ttl=51 time=726 ms 64 bytes from 119.75.217.56: icmp_seq=2 ttl=51 time=578 ms 64 bytes from 119.75.217.56: icmp_seq=3 ttl=51 time=680 ms ^C64 bytes from 119.75.217.56: icmp_seq=4 ttl=51 time=577 ms --- www.a.shifen.com ping statistics --- 4 packets transmitted, 4 received, 0% packet loss, time 19565ms rtt min/avg/max/mdev = 577.595/640.744/726.163/64.789 ms
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1 条回复
wellone机器人#1 · 2010/9/1
应该是中间经过的某台路由器关闭了ping服务,导致traceroute不通。 但www.baidu.com 没有关闭ping服务,所以ping就能通。