2:05 p.m.
Hi,
We are looking at error-detection in traceroutes.
We have this traceroute from praha to copenhagen that many times a day
ends i asterisks after hitting dk-ore-fw.nordu.net as the last hop.
This router has fw in its name and might be some FireWall-thing ?
Is it possible to understand this behaviour ?
Can we persuade it to allow for more traceroutes ?
The last three routers we see is these on the last hop before the
copenhagen VM
is enclosed.
Cheers
Olav
name dk-ore-sw-a01.nordu.net
address 109.105.97.207
name dk-ore-sw-a01.nordu.net
address 109.105.97.197
name dk-ore-fw.nordu.net
address 109.105.99.180
From : raw traceroute :
https://iou2.uninett.no/microdep/traceraw.pl?mp=praha-mp&index=dragonla…
1633309853 starttime 03:10:53
traceroute to 109.105.116.52 40 hops max, 60 byte packets
1 100.64.102.1 0.576 ms 0.696 ms 100.64.102.2 0.514 ms 0.648 ms 100.64.102.1 0.745 ms
0.873 ms
2 100.64.0.1 1.033 ms 195.178.64.232 4.026 ms 4.004 ms 100.64.0.1 1.092 ms 1.231 ms
195.178.64.232 3.935 ms
3 195.113.235.89 2.532 ms 195.178.64.232 3.890 ms 195.113.235.89 2.487 ms
195.178.64.232 3.927 ms 195.113.235.89 2.118 ms 2.081 ms
4 195.113.235.89 2.029 ms 62.40.124.29 0.419 ms 195.113.235.89 1.974 ms 62.40.124.29
0.394 ms 195.113.235.89 1.574 ms 62.40.124.29 0.662 ms
5 62.40.124.29 0.636 ms 0.488 ms 0.461 ms 0.404 ms 0.367 ms *
6 62.40.98.192 6.834 ms 6.805 ms 62.40.98.69 15.299 ms 62.40.98.192 6.934 ms
62.40.98.69 15.316 ms 15.310 ms
7 62.40.98.69 15.287 ms 62.40.125.206 15.319 ms 62.40.98.69 15.297 ms 62.40.125.206
15.274 ms 62.40.98.69 15.246 ms 15.209 ms
8 109.105.97.56 20.463 ms 62.40.125.206 16.365 ms 16.303 ms 15.416 ms 109.105.97.56
20.412 ms 20.433 ms
9 109.105.97.197 20.550 ms 109.105.97.56 20.414 ms 109.105.97.207 20.381 ms
109.105.97.56 20.244 ms 20.221 ms 20.174 ms
10 109.105.99.180 20.503 ms 20.520 ms 109.105.97.197 20.565 ms 20.559 ms 20.620 ms
109.105.99.180 20.973 ms
11 109.105.99.180 20.424 ms 109.105.116.52 20.835 ms 20.957 ms 109.105.99.180 20.505 ms
109.105.116.52 20.865 ms 20.965 ms
1633309918 starttime 03:11:58
traceroute to 109.105.116.52 40 hops max, 60 byte packets
1 100.64.102.2 0.623 ms 100.64.102.1 2.814 ms 100.64.102.2 0.694 ms 0.855 ms 0.987 ms
1.153 ms
2 100.64.0.1 2.894 ms 195.178.64.232 2.765 ms 100.64.0.1 3.013 ms 3.160 ms 3.296 ms
195.178.64.232 2.675 ms
3 195.178.64.232 2.651 ms 195.113.235.89 0.729 ms 0.706 ms 0.682 ms 4.305 ms
195.178.64.232 2.130 ms
4 195.113.235.89 4.003 ms 62.40.124.29 0.479 ms 0.453 ms 195.113.235.89 3.844 ms 3.848
ms 3.724 ms
5 62.40.124.29 0.452 ms * 0.631 ms * 0.641 ms *
6 62.40.98.192 6.802 ms 6.779 ms 62.40.98.69 16.160 ms 16.102 ms 62.40.98.192 6.787 ms
6.719 ms
7 62.40.98.69 15.621 ms 15.586 ms 15.258 ms 15.315 ms 62.40.125.206 15.532 ms 15.507
ms
8 62.40.125.206 15.485 ms 15.594 ms 109.105.97.56 20.150 ms 62.40.125.206 15.494 ms
15.365 ms 109.105.97.56 20.212 ms
9 109.105.97.207 20.406 ms 20.368 ms 109.105.97.56 20.280 ms 20.243 ms 109.105.97.197
20.552 ms 109.105.97.56 20.195 ms
10 109.105.99.180 20.952 ms 20.547 ms 20.505 ms 20.431 ms 20.989 ms 20.435 ms
11 109.105.99.180 20.849 ms 20.377 ms 20.494 ms 20.459 ms 20.490 ms 20.474 ms
12 * * * * * *
13 * * * * * *
14 * * * * * *