Resolved as of 2018-03-16 16:25:00
Wireless network service
We experienced yet another border outage this morning between 11:13 and 11:57. It has stabilized but we will keep this news item open while we continue to investigate, as additional lesser outages are still possible.
[Read more…] about EECS Network Border Outage 3/8/18
We will be performing an experiment which will briefly interrupt the department’s connection to the internet. We understand this is disruptive but the experiment is necessary to determine the cause of the last week’s outages and ensure they do not recur unexpectedly.
Our window for performing the test is 12-1PM, however the actual test will last for 10 minutes or less and the interruption should be brief.
[Read more…] about Network Interruption Expected, 2/23/19 12-1PM
We are experiencing a repeat of last week’s network border issues. We are working with local system administrators to fully remove all problematic devices from the network.
The network will remain mostly stable during this time but there will be a few brief outages as we attempt to verify whether all interferers have been removed.
[Read more…] about Intermittent Network Outage Redux, 2/21/18
We are currently experiencing an issue at the EECS network border which is causing intermittent outages. The connection affected is between EECS and the outside world.
This means that communication within the EECS network should be unaffected, and connectivity to campus or the Internet is intermittently unavailable.
Impact to the research computing cluster in Soda Hall is currently undetermined.
Network staff are coming onsite to better diagnose the issue, and an update will be posted here when we have more detail or an ETA.
Update 11:54 AM:
We are troubleshooting an issue where OSPF control traffic is intermittently dropped between our core and edge router, causing all data traffic to stop.
Traffic is affected between:
* EECS network and campus/Internet
* EECS network and Soda research compute network
Traffic is not affected:
* within the EECS network
* between Soda research compute and campus/Internet (except during certain troubleshooting procedures)
[Read more…] about EECS Network Border Malfunctioning, 2/15/18
We will be reconfiguring our wireless controllers tonight to resolve some IP address conflicts. Service to campus SSIDs (AirBears2, eduroam, CalVisitor) will be briefly impacted.
Each network will lose connectivity for less than one minute while the changes are made.
[Read more…] about Wi-Fi Maintenance, 2/2/18 10PM
Staff are investigating a sudden loss of network in Cory Hall. All of Cory Hall, including the 165 machine room, is offline at this time.
[Read more…] about Cory Hall network outage
The primary Soda Hall machine room lost power around 3:10pm Dec 1. Most IRIS services were impacted. Power has been restored and most services have recovered.
This article will soon be updated with details on the cause of the outage once our technicians have finished restoring services.
[Read more…] about Power Failure in Soda Machine room
There will be a power shutdown for Soda Hall on the early morning of Wednesday, November 29th, scheduled for 2 to 6 AM. The shutdown and short notice are due to an urgent need for the campus high voltage team to complete repairs from line damage in June. It is also possible that the outage could be extended if difficult circumstances are encountered.
We have arranged with campus facilities to receive generator power for 288 and 290 Soda so that we can continue to provide IT services to the outside world while Soda is dark. As such, no interruptions to IRIS services outside Soda Hall are expected at this time. However, due to many electrical load variables it is possible that we may need to shut down some services without notice during the maintenance window.
Power to research server rooms 420A and 287 will be lost and the sysadmins of those rooms are coordinating a full system shutdown.
For sysadmins of machines in 340 Soda, you will also need to shut down your machines. We recommend doing so before midnight.
[Read more…] about Soda Hall Power Shutdown, Wed. 11/29 2AM
We will be performing an unscheduled firmware upgrade of the wireless infrastructure to address a bug in the current release which causes spontaneous reboots of wireless controllers and APs. These reboots have been causing service outages in various areas.
[Read more…] about 11:30PM 11/17 Emergency Wi-Fi Maintenance