Core switch line-card failure in REY, row B

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1. 解決済み2026/03/13 22:22 UTC

   Every machine in row B has been reachable since 22:22 UTC. Duration of the outage: 54 minutes. The failed card is being replaced under an existing maintenance window; the replacement does not require another interruption. Affected machines receive the SLA extension automatically.

2. 監視中2026/03/13 22:13 UTC

   All 14 affected ports are up on the surviving card. We are checking each machine individually before closing this.

3. 原因特定2026/03/13 21:50 UTC

   A line card in one of the two core switches in REY failed. Row B was dual-homed, but the failover on 14 ports did not complete because the standby links were still training. We are forcing those ports over to the surviving card.

4. 調査中2026/03/13 21:31 UTC

   Machines in row B of REY lost network connectivity at 21:28 UTC. Rows outside B are unaffected. Engineers are on the floor.

事後レビューは、解決から5日以内にここに公開されます。