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IRIS

Instructional & Research Information Systems

Wireless Networking

Wireless network service

Intermittent Network Trouble at EECS Border

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Staff are investigating intermittent disturbances in network traffic at or around the EECS border. We’ll provide updates here as we learn more.

Final Update 11/4 12:09:
This issue was caused by a DDoS or DDoS-style traffic which was overloading our firewall, which is near the end of its life. Using a number of active and passive mitigation techniques, we believe the impact of this traffic has been fully mitigated and there should be no further issues; the firewall has been stable since Friday morning. We are also accelerating the project already in the works to replace this firewall.

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Potential Campus Power Outage

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We have been alerted to possible PG&E power outages due to fire danger, and that campus power may be shutdown at some point over the next 2-3 days. If we receive notice of imminent shutdown, we will work to safely shutdown our NetApp fileserver and other critical infrastructure systems; this may occur on very short notice.

We will endeavor to update this News item as we receive any updates.

See also https://berkeley.statusdashboard.com/

We recommend you proceed with shutting down any non-essential machines in advance, e.g. shutting down workstations at the end of the work day.

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Scheduled Network Maintenance: Labor Day Weekend 8/31 – 9/2, 3-4AM

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We will be performing firmware upgrades on the EECS core routers at 3AM on the mornings of Saturday 8/31, Sunday 9/1, and Monday 9/2 (Labor Day weekend). Each outage is expected to last under 20 minutes; however a full hour has been scheduled in case of unanticipated issues. Specific times and expected impact for each maintenance window is below.

These upgrades were completed successfully as of Monday 9/2 at 4AM.

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Wireless Network Maintenance, 9/18/18 10PM

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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

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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

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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