home tags events about login
one honk maybe more

benjojo posted 22 Jan 2025 00:19 +0000

Hmmm, did NTT As2914 and Arelion AS1299 depeer in EU? Seemingly everything in the EU between them right now goes via the East Coast USA...

(see examples of London-London going via the US, but seemingly this is also happens FRA-FRA)

Unsure if this is a maintenance, since surely the whole of the EU would not go at once?

Maybe just a misconfig or interesting localpref? Surely that would not happen on both ends though...

NTT and Arelion looking glasses showing London to London going via the USA NTT and Arelion looking glasses showing London to London going via the USA

benjojo replied 22 Jan 2025 16:08 +0000
in reply to: https://benjojo.co.uk/u/benjojo/h/P1s5wm4JMNVXfWBCHF

Yeah seems I was right, from a 1299/Arelion ticket:

We understand completely that you are experiencing changed network performance toward certain routes outside AS1299 to AS2914 in Europe. Unfortunately, NTT is no longer a peer to Arelion/Twelve99 in Europe. We have tried to come to an agreement with their peering management for more than a year without any success.
We are still connected to NTT in North America, and we're hoping that they will soon revisit their decision. We are awaiting a response from them we hope to hear from them soon.

I guess that confirms it. NTT-Arelion have depeered in the EU, traffic between the two will divert around the US for now until they solve their "peering management" issues.

This brings NTT up to two peering disputes, NTT-Cogent and NTT-Arelion are de-peered in the EU as of now.

I also just checked and it seems that Arelion-TATA has been resolved, as they seem peered in the EU once more.

benjojo replied 22 Jan 2025 16:15 +0000
in reply to: https://benjojo.co.uk/u/benjojo/h/7hx5cZx5j3kTrvsYp1

If I was going to take a guess (and this is hearsay)

I would assume that that "peering management issues" are probably a euphemism for the similar problems that Cogent have with NTT, and that is that and NTT does not want to peer with the "low cost carriers" in Asia.

Cogent has previously written about their (ongoing) issues with NTT:

Cogent has been trying to work with NTT Global on ensuring sufficient connectivity in each global region the networks operate per normal peering practices. Our efforts have included establishing connectivity with NTT Global in Europe and North America without requiring that NTT Global establish connectivity in Asia. Typically, we would expect companies that peer do so on a worldwide basis and not regionally. Despite Cogent’s repeated requests, NTT Global has consistently refused to establish connectivity in Asia

Given that NTT has a moat in Asia, I assume this is NTT attempting to protect "their" market from Cogent/Arelion etc, they are seemingly willing to sacrifice connectivity to the other T1s to preserve it.