Core router software upgrade — ZRH

予定内容

We will upgrade the operating system on the two core routers in ZRH, one after the other. Each router is drained before it reloads, so traffic stays on the other one. Expect up to 60 seconds of reduced redundancy per router while its BGP sessions reconverge; no machine should lose connectivity. Out-of-band access is unaffected.

タイムライン

1. 完了2026/02/18 3:37 UTC

   Both core routers in ZRH are on the new release and carrying traffic. No connectivity was lost during the window.

2. 実施中2026/02/18 1:45 UTC

   Maintenance has started. The first core router in ZRH has been drained and is reloading.

3. 予定2026/02/04 16:36 UTC

   We will upgrade the operating system on the two core routers in ZRH, one after the other. Each router is drained before it reloads, so traffic stays on the other one. Expect up to 60 seconds of reduced redundancy per router while its BGP sessions reconverge; no machine should lose connectivity. Out-of-band access is unaffected.