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Massive packet loss via Cogent to cloud services hosted in Paris DCs

Mattgex — Mon, 28 Dec 2020 23:05:24 GMT

Posting this here to see if it'll get any traction. There has been a problem, starting today, with connections to cloud services in Paris DCs which seems to be a BT/Cogent routing issue. There is up to 20% packet loss on any tests I do to Gravelines IP addresses, with the below traceroute snap showing the issue in more detail:

Now this is clearly a Cogent issue, however I am hoping BT will be a priority customer for them as far as support is concerned. Other ISPs using different carriers / routes appear to be unaffected, as you might imagine.

Any assistance BT can provide would be much appreciated.

Re: Massive packet loss via Cogent to cloud services hosted in Paris DCs

Mattgex — Tue, 29 Dec 2020 18:51:31 GMT

Update on this, Cogent are aware of huge saturation on their peering with BT during peak hours (it's happening again right this minute):

Hello,

We have had our peering with BT saturated since around 16:00 UK time until about one hour ago. Since then, the connection is not saturated anymore.

Regards,

Joaquín Martínez Moraleda | EU NOC Engineer
Customer Support Europe / European Network Operation Center
Cogent Communications| Madrid, Spain | www.cogentco.com<http://www.cogentco.com

If there is no quick fix for this then I'll be moving to another provider that doesn't have these peering issues ASAP.