3 ms·

From my university network in Germany, I seem to get a direct London → Perth link and a total latency of 278ms. I couldn't find any information about a direct f

From my university network in Germany, I seem to get a direct London → Perth link and a total latency of 278ms. I couldn't find any information about a direct fiber between London and Australia, though there is one from London to Singapore, and AARNet seems to have presence in Singapore. My guess would be that there is some switching below the IP layer going on in Singapore as described by dicknuckle in a sibling comment. 9 cr-fra2-be11.x-win.dfn.de (188.1.144.222) 15.360 ms 15.385 ms dfn.mx1.fra.de.geant.net (62.40.124.217) 15.021 ms 10 ae7.mx1.ams.nl.geant.net (62.40.98.186) 21.806 ms dfn.mx1.fra.de.geant.net (62.40.124.217) 15.244 ms ae7.mx1.ams.nl.geant.net (62.40.98.186) 21.707 ms 11 ae9.mx1.lon.uk.geant.net (62.40.98.129) 29.059 ms ae7.mx1.ams.nl.geant.net (62.40.98.186) 21.805 ms ae9.mx1.lon.uk.geant.net (62.40.98.129) 28.933 ms 12 138.44.226.6 (138.44.226.6) 196.613 ms ae9.mx1.lon.uk.geant.net (62.40.98.129) 29.074 ms 29.156 ms 13 138.44.226.6 (138.44.226.6) 196.807 ms et-7-3-0.pe1.wmlb.vic.aarnet.net.au (113.197.15.28) 277.463 ms 138.44.226.6 (138.44.226.6) 196.778 ms 14 138.44.64.73 (138.44.64.73) 277.544 ms et-7-3-0.pe1.wmlb.vic.aarnet.net.au (113.197.15.28) 277.629 ms *

throwaway9d0291 6y ago
I don't think it's Perth, the address has ".vic." in the name, which implies that the router in question is located in Victoria. My guess is that there's a private network involved. If you use AARNet's looking glass [0] it shows that its route to GEANT's London router goes through Singapore. [0]: https://lg.aarnet.edu.au/cgi-bin/lg https://lg.aarnet.edu.au/cgi-bin/lg
- lorenzhs 6y ago
  Yeah you're right, "pe1" shows up in many of their hostnames with different states in the name. And their looking glass shows a bunch of hops within Australia, none of which show up when I do a traceroute.
  - allarm 6y ago
    PE means provider edge. CE - customer edge.
Swannie 6y ago
AARNet own subsea capacity to Singapore: https://www.aarnet.edu.au/network-and-services/the-network/indigo-project https://www.aarnet.edu.au/network-and-services/the-network/i... They also have a fairly extensive network of dark fiber and leased fiber in Australia. I suspect they might have an onward wavelength service to London.

throwaway9d0291 6y ago

I don't think it's Perth, the address has ".vic." in the name, which implies that the router in question is located in Victoria. My guess is that there's a private network involved. If you use AARNet's looking glass [0] it shows that its route to GEANT's London router goes through Singapore. [0]: https://lg.aarnet.edu.au/cgi-bin/lg https://lg.aarnet.edu.au/cgi-bin/lg

lorenzhs 6y ago
Yeah you're right, "pe1" shows up in many of their hostnames with different states in the name. And their looking glass shows a bunch of hops within Australia, none of which show up when I do a traceroute.
- allarm 6y ago
  PE means provider edge. CE - customer edge.

Swannie 6y ago

AARNet own subsea capacity to Singapore: https://www.aarnet.edu.au/network-and-services/the-network/indigo-project https://www.aarnet.edu.au/network-and-services/the-network/i... They also have a fairly extensive network of dark fiber and leased fiber in Australia. I suspect they might have an onward wavelength service to London.