Elevated packet loss towards Cogent in New York (NYC1)

Affected:

Network · NYC1

Duration

1 h 36

Reference

inc-20240101-1

Timeline

1. Resolved2 Jan 2024, 00:30 UTC

   Cogent confirmed a faulty line card on their side and replaced it. The port is back in production with normal loss and latency.

2. Monitoring1 Jan 2024, 23:57 UTC

   Traffic is now flowing through the remaining upstreams and the DE-CIX New York exchange. Loss has returned to zero; we are monitoring before restoring the port.

3. Identified1 Jan 2024, 23:08 UTC

   The loss is confined to the Cogent port in New York (NYC1). We have lowered its local preference to shift traffic to other upstreams while the carrier investigates.

4. Investigating1 Jan 2024, 22:54 UTC

   We are investigating reports of packet loss on traffic transiting Cogent from New York (NYC1). Peering and other carriers are unaffected.

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