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您好，

    在您线路接入电信路由器设备R带您网关为源ping测对端正常可达，网络层正常

R#ping -a 183.56.158.49 42.120.226.7
PING 42.120.226.7: 56 data bytes, press CTRL_C to break
Reply from 42.120.226.7: bytes=56 Sequence=1 ttl=237 time=20 ms
Reply from 42.120.226.7: bytes=56 Sequence=2 ttl=237 time=27 ms
Reply from 42.120.226.7: bytes=56 Sequence=3 ttl=237 time=31 ms
Reply from 42.120.226.7: bytes=56 Sequence=4 ttl=237 time=27 ms
Reply from 42.120.226.7: bytes=56 Sequence=5 ttl=237 time=21 ms

--- 42.120.226.7 ping statistics ---
5 packet(s) transmitted
5 packet(s) received
0.00% packet loss
round-trip min/avg/max = 20/25/31 ms

带您网关为源trace对端也是在119.38.213.X网段后无回显，查看

R#tracert -a 183.56.158.49 42.120.226.7
traceroute to 42.120.226.7(42.120.226.7), max hops: 30 ,packet length: 40,press CTRL_C to break 
1 121.34.244.137 33 ms 121.34.244.133 4 ms 121.34.244.137 4 ms 
2 121.15.179.66 4 ms 119.136.12.138 5 ms 121.15.179.66 5 ms 
3 * * * 
4 183.56.65.6 11 ms 183.56.65.2 9 ms 183.56.65.6 12 ms 
5 202.97.85.118 23 ms 202.97.85.126 24 ms 24 ms 
6 220.191.200.22 37 ms 220.191.200.2 27 ms 220.191.200.18 28 ms 
7 115.238.21.121 43 ms 115.236.101.213 27 ms 115.236.101.221 28 ms 
8 * 119.38.213.69 33 ms 42.120.244.158 28 ms 
9 * * * 
10 * * * 
11 * * * 
12 * * * 
13 * * * 
14 * * * 

查看119.38.213.69 已进入阿里云内网，请联系阿里云协查，谢谢