A distribution layer network switch failure occurred at 11:50 AM on Monday, April 09 2012, causing a network outage on the west side of the campus including TRS. WiFi access may have been affected across the entire campus. The problem is currently being investigated. We’ll provide an update once more details are available.
Update 12:35, Monday, April 9, 2012:
The outage lasted almost one hour (from 11:10 to 12:05) during which time wired network access in the following buildings was intermittent or extremely slow due to high CPU utilization in the distribution switches:
- KHW
- CE
- VIC
- AMC
- POD
- LIB
- JOR
Wireless access all over the campus was down with the exception of TRS.
The problem began while CCS was making network configuration changes that should not have had any impact on the network.
Update 1:19 pm, Monday, April 9, 2012:
The config change (that appears to have triggered the outage) was on our distribution network level switches for our WiFi controllers. We do not know why the change resulted in the network switches’s high CPU usage for a prolonged period of time.
We have opened a ticket with the switch provider.
Please accept our apologies for the disruption in service.
-Computing and Communications Services