Core switch line-card failure in ZRH, row C

타임라인

1. 해결됨2025. 3. 16. 오전 7:12 UTC

   Every machine in row C has been reachable since 07:12 UTC. Duration of the outage: 50 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. 모니터링 중2025. 3. 16. 오전 6:58 UTC

   All 13 affected ports are up on the surviving card. We are checking each machine individually before closing this.

3. 원인 확인2025. 3. 16. 오전 6:42 UTC

   A line card in one of the two core switches in ZRH failed. Row C was dual-homed, but the failover on 13 ports did not complete because the standby links were still training. We are forcing those ports over to the surviving card.

4. 조사 중2025. 3. 16. 오전 6:28 UTC

   Machines in row C of ZRH lost network connectivity at 06:22 UTC. Rows outside C are unaffected. Engineers are on the floor.

사후 검토는 해결 후 5일 이내에 이곳에 게시됩니다.