Software problem caused disruption in Internet and email services

A software problem caused the university's web traffic to slow to a crawl Thursday morning. During the disruption, which began about 7:30 a.m., university web pages would not load. In some cases, email service was disrupted. The disruption affected web access for people both on and off campus.

"Today's degradation in service to Stanford's web pages and email services was caused by a network traffic shaping device," said Matthew Ricks, executive director of computing services, IT Services.

"The device is used to ensure that bandwidth is allocated fairly and evenly to support all of Stanford's web traffic needs. A software patch applied overnight to correct other problems with the device's performance caused an unexpected degradation of network performance," Ricks added.

The problem was fixed and service returned to normal by noon.