Long hops on international paths

Tue Jan 18 05:17:18 UTC 2022

Please find the examples for the case of Telia below.

FROM jfk-us (jfk-us.team-probing.c008820.20201002.warts.gz)

traceroute from 216.66.30.102 (Ark probe hosted in New York City, NY, US. No AS info found) to 223.114.235.32 (MAXMIXD: Turpan, CN)

1  216.66.30.101  0.365 ms

2  62.115.49.173  3.182 ms

3  *

4  62.115.137.59  17.453 ms [x] (chi-b23-link.ip.twelve99.net., CAIDA-GEOLOC -> Chicago, IL, US)

5  62.115.117.48  59.921 ms [x] (sea-b2-link.ip.twelve99.net., RIPE-IPMAP -> Seattle, WA, US)

6  62.115.171.221  69.993 ms

7  223.120.6.53  69.378 ms

8  223.120.12.34  226.225 ms

9  221.183.55.110  237.475 ms

10  221.183.25.201  238.697 ms

11  221.176.16.213  242.296 ms

12  221.183.36.62  352.695 ms

13  221.183.39.2  300.166 ms

14  117.191.8.118  316.270 ms

15  *

16  *

17  *

18  *

19  *

FROM ord-us (ord-us.team-probing.c008820.20201002.warts.gz)

traceroute from 140.192.218.138 (Ark probe hosted in Chicago, IL, US at Depaul University-AS20120) to 109.25.215.237 (237.215.25.109.rev.sfr.net., MAXMIXD: La Crau, FR)

1  140.192.218.129  0.795 ms

2  140.192.9.124  0.603 ms

3  64.124.44.158  1.099 ms

4  64.125.31.172  3.047 ms

5  *

6  64.125.15.65  1.895 ms      [x] (zayo.telia.ter1.ord7.us.zip.zayo.com., CAIDA-GEOLOC -> Chicago, IL, US)

7  62.115.118.59  99.242 ms    [x] (prs-b3-link.ip.twelve99.net., CAIDA-GEOLOC -> Paris, FR)

8  62.115.154.23  105.214 ms

9  77.136.10.6  119.021 ms

10  77.136.10.6  118.830 ms

11  80.118.89.202  118.690 ms

12  80.118.89.234  118.986 ms

13  109.24.108.66  119.159 ms

14  109.25.215.237  126.085 ms

traceroute from 140.192.218.138 (Ark probe hosted in Chicago, IL, US at Depaul University-AS20120) to 84.249.89.93 (dsl-tkubng12-54f959-93.dhcp.inet.fi., MAXMIXD: Turku, FI)

1  140.192.218.129  0.243 ms

2  140.192.9.124  0.326 ms

3  64.124.44.158  0.600 ms

4  *

5  *

6  64.125.15.65  1.792 ms      [x] (zayo.telia.ter1.ord7.us.zip.zayo.com., CAIDA-GEOLOC -> Chicago, IL, US)

7  62.115.123.27  121.199 ms   [x] (hls-b4-link.ip.twelve99.net., CAIDA-GEOLOC -> Helsinki, FI)

8  *

9  141.208.193.190  127.723 ms

10  84.249.89.93  139.051 ms

traceroute from 140.192.218.138 (Ark probe hosted in Chicago, IL, US) to 193.28.231.50 (MAXMIXD: None, HU)

1  140.192.218.129  0.240 ms

2  140.192.9.124  0.333 ms

3  64.124.44.158  0.648 ms

4  *

5  64.125.25.75  0.752 ms

6  64.125.15.65  1.877 ms      [x] (zayo.telia.ter1.ord7.us.zip.zayo.com., CAIDA-GEOLOC -> Chicago, IL, US)

7  62.115.119.39  123.952 ms   [x] (bpt-b2-link.ip.twelve99.net., **I suspect it is in Budapest, HU**)

8  62.115.39.122  117.171 ms

9  88.151.96.148  117.202 ms

10  88.151.96.213  124.787 ms

11  *

12  *

13  *

14  *

15  *

traceroute from 140.192.218.138 (Ark probe hosted in Chicago, IL, US at Depaul University-AS20120) to 152.195.4.11 (MAXMIXD: Los Angeles, CA, US)

1  140.192.218.129  0.224 ms

2  140.192.9.124  0.545 ms

3  64.124.44.158  0.640 ms

4  *

5  *

6  64.125.15.65  1.786 ms      [x] (zayo.telia.ter1.ord7.us.zip.zayo.com., CAIDA-GEOLOC -> Chicago, IL, US)

7  62.115.118.247  54.597 ms   [x] (las-b22-link.ip.twelve99.net., CAIDA-GEOLOC -> Los Angeles, CA, US)

8  62.115.11.129  55.979 ms

9  *

10  *

11  *

12  *

13  *

traceroute from 140.192.218.138 (Ark probe hosted in Chicago, IL, US at Depaul University-AS20120) to 47.31.143.217 (MAXMIXD: Delhi, IN)

1  140.192.218.129  2.277 ms

2  140.192.9.124  0.449 ms

3  64.124.44.158  0.576 ms

4  *

5  *

6  64.125.15.65  1.814 ms      [x] (zayo.telia.ter1.ord7.us.zip.zayo.com., CAIDA-GEOLOC -> Chicago, IL, US)

7  62.115.114.41  210.056 ms   [x] (snge-b5-link.ip.twelve99.net.,)

8  62.115.177.11  200.840 ms

 9  103.198.140.16  233.636 ms

10  103.198.140.16  232.871 ms

11  103.198.140.171  232.648 ms

12  *

13  *

14  *

15  *

16  *

________________________________
From: Lukas Tribus <lukas at ltri.eu>
Sent: Monday, January 17, 2022 1:52 PM
To: PAUL R BARFORD <pb at cs.wisc.edu>
Cc: Nick Hilliard <nick at foobar.org>; nanog at nanog.org <nanog at nanog.org>; Esteban Carisimo <esteban.carisimo at northwestern.edu>; Fabian E. Bustamante <fabianb at cs.northwestern.edu>
Subject: Re: Long hops on international paths

On Mon, 17 Jan 2022 at 20:00, PAUL R BARFORD <pb at cs.wisc.edu> wrote:
> What we're curious about is why we're seeing a concentration of hops at a small number of routers that appear on international paths.

I suggest you share a few actual examples (IP addresses, traceroutes).

I don't think discussing your conclusion based on data we don't have
makes sense.

Lukas
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