Starting around 03:05 UTC on November 18, 2025, the US-ORD (Chicago) datacenter (DC) started having network connectivity issues that led to intermittent packet loss. The Compute Object Storage service was impacted as a result. The proactive monitoring system detected this issue, triggering the internal alerts.

The investigation revealed that the issue was caused due to an ASIC failure corrupting the forwarding table in one of the network routers in this DC. The problematic network router was isolated to mitigate the impact. The issue was mitigated at around 08:46 UTC on November 18, 2025.

Akamai replaced the faulty network router and brought the network router into production service. We monitored the traffic after this step and confirmed that the services are restored and working as expected after replacing the network router.

We apologize for the impact and thank you for your patience and continued support. We are committed to making continuous improvements to make our systems better and prevent recurrence.

This summary provides an overview of our current understanding of the incident given the information available. Our investigation is ongoing, and any information herein is subject to change.