The Cory Hall network was offline from about 12:29 – 12:40 due to a malfunction in the building core switch. The issue has been resolved.
Wired network service
A variety of areas have experienced network interruptions this evening, between 16:47 and 18:39:
- Cory 165 (server room)
- Cory 3F
- Cory 5F
- SDH Nanolab 5th floor
We will be performing a needed firmware upgrade on the Soda Hall core router at 6AM on Sunday, August 29th. This will cause a disruption of all traffic in and out of the EECS network, as well as traffic between the various Soda Hall networks. We expect this outage will last for between 5 and 20 minutes.[Read more…] about Network Maintenance Sun. 8/29 6AM
Network staff are aware of a partial network outage on the first floor of Cory Hall, and are investigating. The outage began at 9:41AM.
Update: Service has been restored as of 10:52AM.
During the day on Monday, Aug. 9, we will be performing maintenance on the network border between EECS and campus. No outage is expected.[Read more…] about Network Border Maintenance, Mon. 8/9
We will be performing maintenance on our border router at 6AM on Sunday, August 1st which will cause a 5-10 minute disruption of the network path in and out of the EECS network. During this time, all EECS networks will be severed from campus and the Internet.[Read more…] about Network Border Maintenance Sun. 8/1 6AM
All Cory Hall networks are offline since 23:24 last night, due to an apparent electrical issue in the Cory network core.
As we have not received an immediate response from facilities services, network staff are preparing to go onsite to investigate.
A possible Cory switch failure occurred at about 1:25pm this afternoon, affecting at least some machines on the first floor and mezzanine of Cory Hall. Network staff are aware, and will investigate.[Read more…] about Network outage
As of 2:21 pm, networking for Sutardja Dai, Blum, and Calvin Halls is offline. Staff are en route to campus for further investigation.
Update: network connectivity was fully restored at 6:00PM when certain hosts which were causing instability were removed from the network. We will follow up tomorrow with the sysadmins of these hosts to try and prevent future incidents.
On Tuesday, August 18th, Soda Hall building power will be shutdown from approximately 8am to 8pm for required facilities work. There will also be sporadic brief outages to various IRIS services between 9am and 2pm due to network maintenance.
Our primary datacenter and network core will receive backup generator support and we generally expect all services to remain online throughout the day. However, we are taking the opportunity to perform a number of network maintenance items which would have otherwise necessitated multiple outages later in the year.
As a result there will be multiple brief interruptions to various services including NetApp file servers, DHCP and DNS service, and the login.eecs and winterm terminal servers. We expect each individual interruption will last for less than five minutes, and this work will be performed between 9AM – 2PM. This post will be updated when all network maintenance is complete.
After network services are fully restored, sysadmins may need to reboot their systems, restart/remount nfs file systems, etc. to get fully back online.[Read more…] about Soda Hall Power Shutdown Tuesday 8/18 8am-8pm