Fibre cut on the Init7 path out of ZRH

タイムライン

1. 解決済み2025/01/01 0:56 UTC

   Full redundancy in ZRH restored at 00:56 UTC. Duration of the reduced-redundancy state: 2 h 35 min. No machine lost connectivity at any point; this is what the second carrier is for.

2. 監視中2025/01/01 0:44 UTC

   The splice is complete and the Init7 link is back at full light level. We are re-enabling it gradually and watching error counters.

3. 原因特定2024/12/31 23:01 UTC

   Init7 has confirmed a fibre cut caused by third-party roadworks about 6 km from the site. A splice crew has been dispatched. We are operating on the second carrier plus the exchange for the duration, with headroom for peak traffic.

4. 調査中2024/12/31 22:23 UTC

   The Init7 uplink in ZRH went down at 22:21 UTC. Traffic failed over to Cogent and CIXP within seconds; capacity is reduced but no machine is unreachable. Init7 reports a loss of light on the metro fibre.