Wireless Networking

Wireless network service

Wireless Network Maintenance, 9/18/18 10PM

September 18, 2018 by Derek Calderon

We will be performing an upgrade of our wireless controllers tonight at 10PM. Wireless networks will be unavailable for 15-30 minutes during the upgrade.

The software update intends to resolve some existing bugs which have been triggering unexpected controller reboots, occasionally causing network outages.

This maintenance will not affect BWRC, as that controller has already been updated. All other EECS Wi-Fi locations will be affected. (Soda, Cory, SDH, Jacobs, Blum, Calvin, HMMB BiD Center)
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Brief Wi-Fi Outage, 9/14/18

September 14, 2018 by Derek Calderon

There was a brief wireless network outage this morning due to a simultaneous crash of the primary and backup wireless controllers. The controllers self-recovered and we are now investigating the cause of the crash.

Wireless networks at BWRC were not affected.

Resolved as of 2018-09-14 10:20:00

BWRC Uplink Issues, 8/23/18

August 23, 2018 by Derek Calderon

Following this morning’s IST network maintenance we are experiencing issues passing traffic in and out of BWRC. We may have identified the root cause and are working with the campus NOC to resolve.

The impact specifically seems to be traffic between BWRC and EECS. Local traffic within BWRC is not affected. General traffic to/from the Internet does not appear affected. We are unsure about traffic between BWRC and the rest of campus outside EECS.

We will be performing an experimental configuration change tomorrow morning on the related EECS routers to try and alleviate the issue until the true cause can be addressed with IST. An update will be posted here before or around noon.
[Read more…] about BWRC Uplink Issues, 8/23/18

BWRC Wireless Maintenance 8/8/18 9PM

August 8, 2018 by Derek Calderon

We will be performing upgrades on the BWRC wireless network Wednesday night between 9 and 11 PM. The network will remain online but some BWRC services may be inaccessible from the wireless network during the upgrade.

The upgrade is estimated to take around 45 minutes.
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IT and Electrical Maintenance Shutdown, Sat. 6/16/18

June 15, 2018 by Derek Calderon

On Saturday, June 16th, the campus high voltage team will be cutting power to **Soda, Jacobs, Etcheverry, and North Gate Halls** to complete critical power grid maintenance. The electrical shutdown is currently scheduled for **8AM to 1PM** and these buildings will be **closed** during this time to all but critical staff related to the maintenance projects.

We are also taking this time to perform safety tests in our server and network rooms, as well as replacing the failed battery backup system in our primary server room. As a result, **the outage window for most IT services** (other than basic network connectivity) **is 11PM 6/15 – 9PM 6/16**.

Anybody with computers and electronics in Soda and Jacobs is **STRONGLY RECOMMENDED** to power off their noncritical systems when leaving the office on Friday, June 15. Critical systems **MUST** be powered off by 6AM on Saturday the 16th. This includes machines hosted in the 340 Soda server room, and a separate message will be sent to those system administrators next week.

As most of EECS’ IT infrastructure is hosted in Soda Hall, this will have some impacts which are detailed below. This will affect all EECS locations which are not undergoing electrical maintenance: **Cory, Sutardja Dai and Blum Halls, the Calvin Lab, and BWRC** as well as remote users.

* **Network infrastructure** (wired and wireless connections, including DHCP and DNS services) **will be offline for a brief period between 6:00 and 6:30 AM** in order to perform annual Emergency Power Off and Fire Alarm tests in our network core. Basic networking (including DHCP/DNS) will be restored by 6:30 and should remain up for the remainder of the day for all locations outside of Soda and Jacobs Hall.

* The IRIS website and portions of the department website including personal homepages, as well as other IRIS services that depend on file storage, will be shut down **starting at 11PM Fri. 6/15**

* Storage services, including home and project file storage, will be shut down at **12 AM Sat. 6/16**

* All services are scheduled to be **restored by 9PM**, but may be online earlier if maintenance is completed ahead of schedule.

As the IRIS website will be unavailable during this maintenance, https://status.eecs.berkeley.edu will be available for in-the-moment status updates.

Please contact help@eecs.berkeley.edu with any questions or concerns.
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Network slowness, dropped packets

April 2, 2018 by Lars Rohrbach

Staff are investigating widespread reports of network slowness and dropped packets.

Network traffic solely within EECS networks appears to be fine, but network traffic traveling past the EECS border to campus or beyond is incurring significant packet loss. It is unclear at this time whether the problem exists on the EECS side or the campus side.

We will update this news item with more information as it becomes available.
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Network Outage, 3/16/18

March 16, 2018 by Derek Calderon

The EECS network’s connection to campus and the Internet was offline for about 30 minutes due to a firewall protocol failure during a configuration change that should not have been disruptive. The error was corrected and the network is restored.

Resolved as of 2018-03-16 16:25:00

EECS Network Border Outage 3/8/18

March 8, 2018 by Derek Calderon

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.
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Network Interruption Expected, 2/23/18 12-1PM

February 23, 2018 by Derek Calderon

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.
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Intermittent Network Outage Redux, 2/21/18

February 21, 2018 by Derek Calderon

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