#2261508 - WiscNet - Multiple sites - DOWN

Update timeline

1. identified Jul 16, 2026, 04:07 AM UTC

   Hello, Around 10:30PM WiscNet observed alerts indicating a widespread outage, after investigation this is a maintenance event on one of WiscNet's partner's network. This work is scheduled to end at 6:00AM.

2. identified Jul 16, 2026, 10:32 AM UTC

   Hello, At this time we have seen most of the alarms cleared and services restored. We will reach out after 6 to confirm the maintenances status. Thank you,

3. identified Jul 16, 2026, 11:29 AM UTC

   Hello, We continue to observed 1 circuit down after the maintenance. We are currently working with our provider to investigate and restore the circuit. Please reach out with any questions. Thank you,

4. identified Jul 16, 2026, 02:11 PM UTC

   We are still seeing the City of Madison as down, circuit 400265. After further investigation, this outage was discovered to be due to construction. A tech is en route to the site for further investigation. They have an ETA around 15 minutes.

5. identified Jul 16, 2026, 02:43 PM UTC

   The tech onsite discovered a bad fiber. A splicer is en router to test and fix the bad fiber with an ETA around 1 hour.

6. resolved Jul 16, 2026, 03:33 PM UTC

   We are seeing circuit 400265 for the City of Madison as back up at 10:25 AM today. The issue was discovered to be a bad optic.

7. postmortem Jul 16, 2026, 08:15 PM UTC

   **POST-MORTEM TEMPLATE** Date & Time of Incident: 7/15/2026 10:32 PM Duration: 713 Technician\(s\): Jim Hamblin, Fue Khang Review Date: 7/16/2026 Brief Summary: Devices came into alarm at 10:32 PM on 7/15/2026 which was found to be due to a maintenance. After the maintenance, all circuits recovered except City of Madison. this was found to be due to a bad optic, which was changed and restored at 10:25 AM 7/16/2026. Root Cause: Maintenance and Bad optic