我读到 tracert 输出中的 * 表示数据包丢失。我对同一个 IP 运行了 3 次相同的命令，并且始终在同一跳上看到 *。
C:\Users\jpnin>tracert sea.valve.net
Tracing route to sea.valve.net [205.196.6.129]
over a maximum of 30 hops:
1 1 ms 1 ms 1 ms dlinkrouter.Dlink [192.168.0.1]
2 4 ms 2 ms 4 ms 10.226.0.1
3 451 ms 742 ms 696 ms 10.200.150.36
4 * * * Request timed out.
5 4 ms 3 ms 3 ms 121.242.155.181.static-chennai.vsnl.net.in [121.242.155.181]
6 27 ms 26 ms 26 ms 172.25.81.134
7 24 ms 22 ms 23 ms ix-ae-0-100.tcore1.mlv-mumbai.as6453.net [180.87.38.5]
8 215 ms * 215 ms if-ae-5-2.tcore1.wyn-marseille.as6453.net [80.231.217.29]
9 208 ms 210 ms 207 ms if-ae-2-3.tcore2.wyn-marseille.as6453.net [80.231.217.51]
10 214 ms 213 ms 213 ms if-ae-9-2.tcore2.l78-london.as6453.net [80.231.200.14]
11 210 ms 205 ms 205 ms if-ae-2-2.tcore1.l78-london.as6453.net [80.231.131.2]
12 219 ms 222 ms 218 ms if-ae-15-5.tcore3.njy-newark.as6453.net [80.231.130.102]
13 214 ms 210 ms 210 ms if-ae-1-3.tcore4.njy-newark.as6453.net [216.6.57.6]
14 204 ms 203 ms 202 ms if-ae-34-15.tcore3.nto-newyork.as6453.net [66.198.111.59]
15 * * 206 ms if-be-2-2.ecore1.n75-newyork.as6453.net [66.110.96.62]
16 206 ms 206 ms 202 ms if-ae-57-2.tcore1.n75-newyork.as6453.net [66.110.96.58]
17 207 ms 207 ms 209 ms 66.110.96.114
18 205 ms 206 ms 205 ms be-3312-cs03.newyork.ny.ibone.comcast.net [96.110.34.41]
19 218 ms 214 ms 214 ms be-1311-cr11.newyork.ny.ibone.comcast.net [96.110.35.122]
20 226 ms 226 ms 225 ms be-302-cr12.350ecermak.il.ibone.comcast.net [96.110.38.69]
21 223 ms 223 ms 222 ms be-1112-cs01.350ecermak.il.ibone.comcast.net [96.110.35.17]
22 228 ms 228 ms * be-1111-cr11.350ecermak.il.ibone.comcast.net [96.110.35.2]
23 244 ms 245 ms 245 ms be-304-cr11.1601milehigh.co.ibone.comcast.net [96.110.37.158]
24 249 ms 247 ms 246 ms be-1311-cs03.1601milehigh.co.ibone.comcast.net [96.110.39.73]
25 259 ms 257 ms 256 ms be-1313-cr13.1601milehigh.co.ibone.comcast.net [96.110.39.106]
26 248 ms 250 ms 248 ms be-303-cr13.champa.co.ibone.comcast.net [96.110.36.201]
27 248 ms 248 ms 248 ms be-1413-cs04.champa.co.ibone.comcast.net [96.110.37.237]
28 244 ms 244 ms 244 ms be-1411-cr11.champa.co.ibone.comcast.net [96.110.37.206]
29 269 ms 269 ms 269 ms be-302-cr11.seattle.wa.ibone.comcast.net [96.110.36.214]
30 269 ms 269 ms 272 ms be-1311-cs03.seattle.wa.ibone.comcast.net [96.110.47.201]
Trace complete.
C:\Users\jpnin>tracert sea.valve.net
Tracing route to sea.valve.net [205.196.6.129]
over a maximum of 30 hops:
1 1 ms 1 ms 1 ms dlinkrouter.Dlink [192.168.0.1]
2 3 ms 2 ms 2 ms 10.226.0.1
3 523 ms 415 ms 223 ms 10.200.150.36
4 * * * Request timed out.
5 3 ms 2 ms 5 ms 121.242.155.181.static-chennai.vsnl.net.in [121.242.155.181]
6 26 ms 28 ms 28 ms 172.25.81.134
7 21 ms 21 ms 21 ms ix-ae-0-100.tcore1.mlv-mumbai.as6453.net [180.87.38.5]
8 * * * Request timed out.
9 208 ms 213 ms 212 ms if-ae-2-3.tcore2.wyn-marseille.as6453.net [80.231.217.51]
10 215 ms 213 ms 213 ms if-ae-9-2.tcore2.l78-london.as6453.net [80.231.200.14]
11 208 ms 205 ms 209 ms if-ae-2-2.tcore1.l78-london.as6453.net [80.231.131.2]
12 224 ms 218 ms 220 ms if-ae-15-5.tcore3.njy-newark.as6453.net [80.231.130.102]
13 211 ms 211 ms 214 ms if-ae-1-3.tcore4.njy-newark.as6453.net [216.6.57.6]
14 202 ms 205 ms 203 ms if-ae-34-15.tcore3.nto-newyork.as6453.net [66.198.111.59]
15 207 ms 207 ms 208 ms if-be-2-2.ecore1.n75-newyork.as6453.net [66.110.96.62]
16 212 ms 204 ms 205 ms if-ae-57-2.tcore1.n75-newyork.as6453.net [66.110.96.58]
17 208 ms 207 ms 207 ms 66.110.96.114
18 205 ms 206 ms 209 ms be-3312-cs03.newyork.ny.ibone.comcast.net [96.110.34.41]
19 214 ms 214 ms 216 ms be-1311-cr11.newyork.ny.ibone.comcast.net [96.110.35.122]
20 227 ms 226 ms 228 ms be-302-cr12.350ecermak.il.ibone.comcast.net [96.110.38.69]
21 222 ms 223 ms 222 ms be-1112-cs01.350ecermak.il.ibone.comcast.net [96.110.35.17]
22 226 ms 228 ms * be-1111-cr11.350ecermak.il.ibone.comcast.net [96.110.35.2]
23 246 ms 243 ms 245 ms be-304-cr11.1601milehigh.co.ibone.comcast.net [96.110.37.158]
24 247 ms 253 ms 251 ms be-1311-cs03.1601milehigh.co.ibone.comcast.net [96.110.39.73]
25 257 ms 258 ms 260 ms be-1313-cr13.1601milehigh.co.ibone.comcast.net [96.110.39.106]
26 248 ms 251 ms 251 ms be-303-cr13.champa.co.ibone.comcast.net [96.110.36.201]
27 248 ms 247 ms 251 ms be-1413-cs04.champa.co.ibone.comcast.net [96.110.37.237]
28 246 ms 245 ms 244 ms be-1411-cr11.champa.co.ibone.comcast.net [96.110.37.206]
29 269 ms 270 ms 270 ms be-302-cr11.seattle.wa.ibone.comcast.net [96.110.36.214]
30 270 ms 269 ms 271 ms be-1311-cs03.seattle.wa.ibone.comcast.net [96.110.47.201]
Trace complete.
C:\Users\jpnin>tracert sea.valve.net
Tracing route to sea.valve.net [205.196.6.129]
over a maximum of 30 hops:
1 5 ms 5 ms 1 ms dlinkrouter.Dlink [192.168.0.1]
2 3 ms 3 ms 1 ms 10.226.0.1
3 30 ms 57 ms 151 ms 10.200.150.36
4 * * * Request timed out.
5 2 ms 2 ms 2 ms 121.242.155.181.static-chennai.vsnl.net.in [121.242.155.181]
6 27 ms 29 ms 28 ms 172.25.81.134
7 21 ms 25 ms 31 ms ix-ae-0-100.tcore1.mlv-mumbai.as6453.net [180.87.38.5]
8 216 ms 216 ms 216 ms if-ae-5-2.tcore1.wyn-marseille.as6453.net [80.231.217.29]
9 208 ms 207 ms 211 ms if-ae-2-3.tcore2.wyn-marseille.as6453.net [80.231.217.51]
10 213 ms 218 ms 213 ms if-ae-9-2.tcore2.l78-london.as6453.net [80.231.200.14]
11 234 ms 205 ms 204 ms if-ae-2-2.tcore1.l78-london.as6453.net [80.231.131.2]
12 226 ms 219 ms 218 ms if-ae-15-5.tcore3.njy-newark.as6453.net [80.231.130.102]
13 211 ms 214 ms 213 ms if-ae-1-3.tcore4.njy-newark.as6453.net [216.6.57.6]
14 203 ms 202 ms 207 ms if-ae-34-15.tcore3.nto-newyork.as6453.net [66.198.111.59]
15 207 ms 207 ms 211 ms if-be-2-2.ecore1.n75-newyork.as6453.net [66.110.96.62]
16 206 ms 201 ms 205 ms if-ae-57-2.tcore1.n75-newyork.as6453.net [66.110.96.58]
17 210 ms 207 ms 211 ms 66.110.96.114
18 206 ms 205 ms 209 ms be-3312-cs03.newyork.ny.ibone.comcast.net [96.110.34.41]
19 215 ms 214 ms 214 ms be-1311-cr11.newyork.ny.ibone.comcast.net [96.110.35.122]
20 226 ms 226 ms 228 ms be-302-cr12.350ecermak.il.ibone.comcast.net [96.110.38.69]
21 223 ms 226 ms 223 ms be-1112-cs01.350ecermak.il.ibone.comcast.net [96.110.35.17]
22 226 ms 228 ms 225 ms be-1111-cr11.350ecermak.il.ibone.comcast.net [96.110.35.2]
23 260 ms 243 ms 243 ms be-304-cr11.1601milehigh.co.ibone.comcast.net [96.110.37.158]
24 251 ms 247 ms 247 ms be-1311-cs03.1601milehigh.co.ibone.comcast.net [96.110.39.73]
25 257 ms 258 ms 256 ms be-1313-cr13.1601milehigh.co.ibone.comcast.net [96.110.39.106]
26 251 ms 248 ms 248 ms be-303-cr13.champa.co.ibone.comcast.net [96.110.36.201]
27 248 ms 250 ms 247 ms be-1413-cs04.champa.co.ibone.comcast.net [96.110.37.237]
28 246 ms 244 ms 243 ms be-1411-cr11.champa.co.ibone.comcast.net [96.110.37.206]
29 270 ms 270 ms 273 ms be-302-cr11.seattle.wa.ibone.comcast.net [96.110.36.214]
30 270 ms 271 ms 269 ms be-1311-cs03.seattle.wa.ibone.comcast.net [96.110.47.201]
Trace complete.
由于路由器始终没有响应，因此是否可以安全地假设第 4 跳路由器存在问题。我打算使用这些结果联系我的 ISP。因此，我只是想确认我以正确的方式阅读了这篇文章。提前致谢。
答案1
由于第 4 跳路由器始终没有响应，因此可以安全地假设该路由器存在问题。
不。路由器的工作是路由流量，而不是响应 ICMP。第 4 跳的路由器很可能故意丢弃 tracert ICMP 流量（这意味着它已被编程为这样做）。您的 tracert 到达目的地这一事实清楚地表明第 4 跳的路由器正在按应有的方式路由流量。它只是丢弃/忽略指向自己的 tracert。除此之外，它会将您的 tracert 传递到路径中的下一跳。如果不是这样，那么之后的每一跳也会超时。