搬瓦工到AT&T互联确实出问题了,不止是VIRCS，我测了手上9个不同ip段来自多个商家的AT&Tip，部分ping异常+iperf3异常，前置套DMIT后情况有所缓解，但是因为多了一层中转导致重传异常高，推荐还是DMIT直连。
DC1->AT&T正常 DC6->部分AT&T异常
部分ip段速度是正常的，但是重传比DMIT高出很多
搬瓦工->AT&T测试
traceroute to 107.215.x.x (107.215.x.x), 30 hops max, 60 byte packets 1 172.22.64.200 (172.22.64.200) [*] 13.077 ms 13.011 ms 12.957 ms 2 * * * 3 e0-36.switch4.lax1.he.net (64.71.134.141) [AS6939] 0.555 ms 0.645 ms * 4 * * * 5 192.205.32.25 (192.205.32.25) [*] 248.821 ms 326.317 ms 326.281 ms 6 32.130.90.120 (32.130.90.120) [AS7018] 259.039 ms 326.879 ms 32.130.90.122 (32.130.90.122) [AS7018] 326.792 ms 7 * * * 8 * * * 9 * * *10 * * *11 * * *12 * * *13 69.234.46.42 (69.234.46.42) [AS7132] 184.813 ms 358.526 ms 388.281 ms14 * * 107-215-x-x.lightspeed.irvnca.sbcglobal.net (107.215.x.x) [AS7018] 359.079 ms34 packets transmitted, 34 received, 0% packet loss, time 33039msrtt min/avg/max/mdev = 136.185/317.304/413.961/70.544 ms[ ID] Interval Transfer Bitrate Retr Cwnd[ 5] 0.00-1.00 sec 379 KBytes 3.10 Mbits/sec 0 53.7 KBytes [ 5] 1.00-2.00 sec 1.48 MBytes 12.4 Mbits/sec 0 216 KBytes [ 5] 2.00-3.00 sec 764 KBytes 6.25 Mbits/sec 27 243 KBytes [ 5] 3.00-4.00 sec 891 KBytes 7.30 Mbits/sec 0 311 KBytes [ 5] 4.00-5.00 sec 1018 KBytes 8.34 Mbits/sec 27 272 KBytes [ 5] 5.00-6.00 sec 1018 KBytes 8.34 Mbits/sec 0 311 KBytes [ 5] 6.00-7.00 sec 1018 KBytes 8.34 Mbits/sec 0 308 KBytes [ 5] 7.00-8.00 sec 0.00 Bytes 0.00 bits/sec 0 325 KBytes [ 5] 8.00-9.00 sec 1018 KBytes 8.34 Mbits/sec 0 348 KBytes [ 5] 9.00-10.00 sec 1.06 MBytes 8.86 Mbits/sec 4 339 KBytes - - - - - - - - - - - - - - - - - - - - - - - - -[ ID] Interval Transfer Bitrate Retr[ 5] 0.00-10.00 sec 8.50 MBytes 7.13 Mbits/sec 58 sender[ 5] 0.00-10.23 sec 6.60 MBytes 5.41 Mbits/sec receiver[ ID] Interval Transfer Bitrate Retr Cwnd[ 5] 0.00-1.00 sec 420 KBytes 3.44 Mbits/sec 0 59.4 KBytes [ 5] 1.00-2.00 sec 1.02 MBytes 8.54 Mbits/sec 3 170 KBytes [ 5] 2.00-3.00 sec 2.82 MBytes 23.7 Mbits/sec 0 1.25 MBytes [ 5] 3.00-4.00 sec 5.00 MBytes 42.0 Mbits/sec 0 3.87 MBytes [ 5] 4.00-5.00 sec 2.50 MBytes 21.0 Mbits/sec 583 3.89 MBytes [ 5] 5.00-6.00 sec 3.75 MBytes 31.5 Mbits/sec 1050 3.14 MBytes [ 5] 6.00-7.00 sec 2.50 MBytes 21.0 Mbits/sec 453 3.65 MBytes [ 5] 7.00-8.00 sec 3.75 MBytes 31.5 Mbits/sec 894 2.44 MBytes [ 5] 8.00-9.00 sec 3.75 MBytes 31.5 Mbits/sec 155 819 KBytes [ 5] 9.00-10.00 sec 5.00 MBytes 41.9 Mbits/sec 169 1.11 MBytes - - - - - - - - - - - - - - - - - - - - - - - - -[ ID] Interval Transfer Bitrate Retr[ 5] 0.00-10.00 sec 30.5 MBytes 25.6 Mbits/sec 3307 sender[ 5] 0.00-10.31 sec 28.7 MBytes 23.3 Mbits/sec receiverDMIT->AT&T倒是正常
[ ID] Interval Transfer Bitrate Retr Cwnd[ 5] 0.00-1.00 sec 16.2 MBytes 136 Mbits/sec 0 79.2 KBytes [ 5] 1.00-2.00 sec 5.00 MBytes 41.9 Mbits/sec 0 82.0 KBytes [ 5] 2.00-3.00 sec 5.00 MBytes 41.9 Mbits/sec 0 79.2 KBytes [ 5] 3.00-4.00 sec 5.00 MBytes 41.9 Mbits/sec 0 79.2 KBytes [ 5] 4.00-5.00 sec 6.25 MBytes 52.4 Mbits/sec 0 107 KBytes [ 5] 5.00-6.00 sec 5.00 MBytes 41.9 Mbits/sec 0 84.8 KBytes [ 5] 6.00-7.00 sec 5.00 MBytes 41.9 Mbits/sec 0 79.2 KBytes [ 5] 7.00-8.00 sec 6.25 MBytes 52.4 Mbits/sec 0 99.0 KBytes [ 5] 8.00-9.00 sec 5.00 MBytes 41.9 Mbits/sec 0 96.2 KBytes [ 5] 9.00-10.00 sec 5.00 MBytes 41.9 Mbits/sec 0 79.2 KBytes - - - - - - - - - - - - - - - - - - - - - - - - -[ ID] Interval Transfer Bitrate Retr[ 5] 0.00-10.00 sec 63.8 MBytes 53.5 Mbits/sec 0 sender[ 5] 0.00-10.01 sec 53.1 MBytes 44.5 Mbits/sec receiver[ ID] Interval Transfer Bitrate Retr Cwnd[ 5] 0.00-1.00 sec 16.2 MBytes 136 Mbits/sec 0 102 KBytes [ 5] 1.00-2.00 sec 6.25 MBytes 52.4 Mbits/sec 0 93.3 KBytes [ 5] 2.00-3.00 sec 5.00 MBytes 41.9 Mbits/sec 8 79.2 KBytes [ 5] 3.00-4.00 sec 6.25 MBytes 52.4 Mbits/sec 0 96.2 KBytes [ 5] 4.00-5.00 sec 5.00 MBytes 41.9 Mbits/sec 0 94.7 KBytes [ 5] 5.00-6.00 sec 6.25 MBytes 52.4 Mbits/sec 0 82.0 KBytes [ 5] 6.00-7.00 sec 6.25 MBytes 52.4 Mbits/sec 0 87.7 KBytes [ 5] 7.00-8.00 sec 5.00 MBytes 41.9 Mbits/sec 0 79.2 KBytes [ 5] 8.00-9.00 sec 6.25 MBytes 52.4 Mbits/sec 0 87.7 KBytes [ 5] 9.00-10.00 sec 5.00 MBytes 41.9 Mbits/sec 0 79.2 KBytes - - - - - - - - - - - - - - - - - - - - - - - - -[ ID] Interval Transfer Bitrate Retr[ 5] 0.00-10.00 sec 67.5 MBytes 56.6 Mbits/sec 8 sender[ 5] 0.00-10.01 sec 56.6 MBytes 47.4 Mbits/sec receiver搬瓦工->DMIT->AT&T
traceroute to 107.215.x.x (107.215.x.x), 30 hops max, 60 byte packets 1 Anycast.Gateway.DMIT.com (193.41.250.250) [AS906/AS54574] 0.154 ms 0.121 ms 0.102 ms 2 irb-75.er01.lax.DMIT.com (193.41.250.160) [AS906/AS54574] 0.322 ms 0.371 ms 0.402 ms 3 lax-b23-link.ip.twelve99.net (62.115.149.105) [AS1299] 0.565 ms 0.624 ms 0.678 ms 4 att-ic-380339.ip.twelve99-cust.net (62.115.45.151) [AS1299] 2.308 ms 2.418 ms 2.401 ms 5 32.130.90.122 (32.130.90.122) [AS7018] 2.990 ms 2.968 ms 32.130.90.120 (32.130.90.120) [AS7018] 3.085 ms 6 * * * 7 * * * 8 * * * 9 * * *10 * * *11 * * *12 69.234.46.42 (69.234.46.42) [AS7132] 4.385 ms 4.406 ms 5.144 ms13 107-215-x-x.lightspeed.irvnca.sbcglobal.net (107.215.x.x) [AS7018] 6.296 ms * 6.191 ms[ ID] Interval Transfer Bitrate[ 5] 0.00-1.00 sec 9.91 MBytes 83.1 Mbits/sec [ 5] 1.00-2.00 sec 5.77 MBytes 48.4 Mbits/sec [ 5] 2.00-3.00 sec 5.81 MBytes 48.7 Mbits/sec [ 5] 3.00-4.00 sec 5.79 MBytes 48.6 Mbits/sec [ 5] 4.00-5.00 sec 5.83 MBytes 48.9 Mbits/sec [ 5] 5.00-6.00 sec 5.84 MBytes 49.0 Mbits/sec [ 5] 6.00-7.00 sec 5.84 MBytes 49.0 Mbits/sec [ 5] 7.00-8.00 sec 5.72 MBytes 48.0 Mbits/sec [ 5] 8.00-9.00 sec 5.82 MBytes 48.8 Mbits/sec [ 5] 9.00-10.00 sec 5.64 MBytes 47.3 Mbits/sec - - - - - - - - - - - - - - - - - - - - - - - - -[ ID] Interval Transfer Bitrate Retr[ 5] 0.00-10.05 sec 65.9 MBytes 55.0 Mbits/sec 5925 sender[ 5] 0.00-10.00 sec 62.0 MBytes 52.0 Mbits/sec receiver[ ID] Interval Transfer Bitrate Retr Cwnd[ 5] 0.00-1.00 sec 11.5 MBytes 96.4 Mbits/sec 6524 1.29 MBytes [ 5] 1.00-2.00 sec 13.8 MBytes 115 Mbits/sec 1383 1.22 MBytes [ 5] 2.00-3.00 sec 11.2 MBytes 94.4 Mbits/sec 779 1.25 MBytes [ 5] 3.00-4.00 sec 11.2 MBytes 94.4 Mbits/sec 883 1.25 MBytes [ 5] 4.00-5.00 sec 12.5 MBytes 105 Mbits/sec 796 716 KBytes [ 5] 5.00-6.00 sec 11.2 MBytes 94.4 Mbits/sec 845 1.28 MBytes [ 5] 6.00-7.00 sec 12.5 MBytes 105 Mbits/sec 845 1.28 MBytes [ 5] 7.00-8.00 sec 8.75 MBytes 73.4 Mbits/sec 678 1.22 MBytes [ 5] 8.00-9.00 sec 0.00 Bytes 0.00 bits/sec 3 1.41 KBytes [ 5] 9.00-10.00 sec 0.00 Bytes 0.00 bits/sec 1 1.41 KBytes - - - - - - - - - - - - - - - - - - - - - - - - -[ ID] Interval Transfer Bitrate Retr[ 5] 0.00-10.00 sec 92.8 MBytes 77.8 Mbits/sec 12737 sender[ 5] 0.00-10.05 sec 54.0 MBytes 45.1 Mbits/sec receiver换个DMIT就行
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