On 10/12/2020 14:03, Will Hargrave wrote:
It’s a bit surprising that AS39537 is on
peeringdb as present in MA1 and THN but just uses transit providers to
reach other UK networks
You're right, that is a bit surprising, and I'm pretty sure it wasn't
always that way...
My gut feeling is the problem’s in the reverse path (traffic towards
you).
I don't know why I didn't think to check the reverse path, but you're
spot on. Both those traces share a common path through Entanet AS8468
and (I think) LINX Wales on the return path:
Start: 2020-12-10T14:25:11+0000
HOST: server3 Loss% Snt Last Avg Best Wrst StDev
1. AS??? 192.168.0.250 0.0% 100 0.3 0.2 0.1 0.4
0.1
2. AS??? ??? 100.0 100 0.0 0.0 0.0 0.0
0.0
3. AS199448 185.6.196.174 0.0% 100 10.1 11.4 9.8 20.3
2.1
4. AS199448 185.6.196.13 0.0% 100 10.1 11.3 9.9 19.9
2.1
5. AS8468 188.39.74.213 0.0% 100 10.8 12.1 10.6 23.6
2.1
6. AS8468 188.39.127.20 0.0% 100 12.0 12.0 10.5 21.3
1.9
7. AS8468 188.39.127.149 0.0% 100 10.7 12.1 10.5 19.8
2.1
8. AS8468 188.39.127.75 15.0% 100 10.9 12.6 10.8 22.0
2.2
9. AS??? 172.30.0.155 21.0% 100 11.6 13.3 11.3 20.7
2.4
10. AS??? 172.30.0.159 63.0% 100 11.9 13.4 11.6 20.0
2.4
11. AS??? 172.30.0.163 56.0% 100 13.8 15.0 13.6 24.0
2.2
12. AS8468 188.39.127.26 0.0% 100 14.5 15.7 14.1 24.8
2.1
13. AS8468 188.39.127.190 0.0% 100 20.6 22.7 19.7 39.6
4.2
14. AS??? 195.66.228.10 75.0% 100 15.2 18.4 15.0 67.0
10.2
15. AS39537 31.210.132.45 76.0% 100 15.7 16.7 14.9 28.0
3.0
16. AS39537 31.210.134.26 78.0% 100 17.0 16.2 15.1 22.0
1.6
17. AS39537 31.210.128.190 76.0% 100 16.5 17.3 15.5 27.6
2.7
Start: 2020-12-10T14:24:55+0000
HOST: begbroke Loss% Snt Last Avg Best Wrst StDev
1. AS8468 87.127.233.201 0.0% 100 1.2 1.5 1.0 23.2
2.4
2. AS??? 10.100.30.85 0.0% 100 5.4 5.5 5.2 15.2
1.0
3. AS??? 172.30.0.189 0.0% 100 5.2 5.0 4.9 5.4
0.1
4. AS??? 172.30.0.155 28.0% 100 5.4 5.6 5.3 11.2
0.7
5. AS??? 172.30.0.159 59.0% 100 5.8 6.1 5.6 12.2
1.1
6. AS??? 172.30.0.163 58.0% 100 7.7 7.8 7.6 9.0
0.2
7. AS8468 188.39.127.26 0.0% 100 8.3 9.0 8.2 25.7
2.7
8. AS8468 188.39.127.190 0.0% 100 14.9 16.5 14.7 26.3
2.3
9. AS??? ??? 100.0 100 0.0 0.0 0.0 0.0
0.0
10. AS39537 31.210.132.45 73.0% 100 10.2 10.1 9.9 10.5
0.1
11. AS39537 31.210.134.26 78.0% 100 10.2 10.2 9.9 10.6
0.2
12. AS39537 31.210.128.190 71.0% 100 10.8 11.0 10.0 18.7
1.5
I'll pursue this with AS39537...
Thanks,
Chris
--
Chris Boot
[email protected]
