IRIS

Instructional & Research Information Systems

EECS

Wired Networking

Wired network service

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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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

HMMB BiD Center Wired Network Outage 7/13/18 – Ongoing

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The EECS wired network in the HMMB BiD center (169.229.63.0/25) is currently down due to a link issue. According to our router, the link has been down since Friday 7/13 at 22:47.

This part of the network is a little unusual, in that it is served by an EECS router but an IST switch and IST cabling for the last-mile. We have confirmed there seems to be no issue on our end and are working with IST networks toward a resolution.

Wireless networks in HMMB are not affected, including EECS-Secure and EECS-PSK.

Update 12:03 PM: We are in contact with IST Network Operations and they are aware of the severity of the issue. Due to heavy workload, they may not be able to address the issue until tomorrow, but they will look at it as soon as possible.
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Network slowness, dropped packets

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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

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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

Network Interruption Expected, 2/23/19 12-1PM

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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