A 10Gb line card in the Sutardja Dai Hall (CITRIS) core router exhibited errors and reset unexpectedly. I will be replacing the blade at 10am tomorrow. The router and all distribution switches have redundant connections, so there should be no perceivable impact upon connectivity.
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Wired Networking
Wired network service
Network Switch Reboot – 3rd Floor Cory
After the failure and subsequent replacement of the network switch board on 43 subnet in Cory Hall (3rd Floor), the Network Staff will be rebooting the switch early Monday morning. Services should be restored within 1 to 2 minutes.
Resolved as of 2009-04-13 08:15:00
Network Switch Failure: 3rd Floor Cory Hall
Network Switch Board failure in Cory Hall – 3rd floor has caused intermittent, multiple users to be without wired access. Network Staff are currently working on the problem – and will post here when the issue is resolved.
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Scheduled Downtime for 5th Floor Cory Switch
One of the switches on the 5th floor of Cory will be down for about 10 minutes. This impacts the rooms in the DOP center mainly, and wireless in that area as well.
This was originally scheduled for Monday, the 16th, but has been rescheduled for Tuesday, the 17th.
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Emergency Blade Swap
An emergency blade swap in one of the 315 switches will be done at 12:30
ie in a few minutes. This will only concern a few users and only be down for less than 5 minutes.
Resolved as of 2009-01-12 12:41:00
Brief Network Disruption.
All connectivity between EECS and the outside world was briefly disrupted. The exact cause of the outage is unknown; log messages are inconclusive. The primary symptom was dropped OSPF routes on the links which traverse the EECS firewall links. While nobody was actively working on the equipment at that time, it’s possible this outage is related to preliminary testing of new 10GB network links to campus. The problem seems to have resolved itself.
Resolved as of 2009-01-05 16:24:00
EECS Network Maintenance Sunday Dec 28th
We will be upgrading the network in Soda Hall beginning at 2PM on Sunday, Dec 28th. There will be several network outages as most switches in Soda will be upgraded at this time. While each outage is expected to be brief, there will be several so the network throughout EECS and BWRC may be unstable during this time. This effects both wired and wireless networking. We are allowing a 4 hour window as there are so many switches to upgrade. All work should be complete by 6PM. We regret any inconvenience this may cause.
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Two EECS switches Offline Briefly for Maintenance
The EECS switches that are serving north east side of Soda 5th floor and of Soda 6th floor will all experience brief outages on Monday, Dec 22, 2008 beginning at 7:00a.m. due to system maintenance.
The wired network will be offline and users will experience a brief (less than 5 minutes) outage while the switch is rebooted to apply new operating system code. Since some wireless networking devices are also fed by those two devices, some of wireless users will experience a brief outage as well.
The wired network will be offline and users will experience a brief (less than 5 minutes) outage while the switch is rebooted to apply new operating system code. Since some wireless networking devices are also fed by those two devices, some of wireless users will experience a brief outage as well.
Resolved as of 2008-12-22 07:30:00
Unplanned network outage
At 16:34PM Friday afternoon, some subnets in Cory lost connectivity to Soda. The network recovered within 5 minutes. The border router indicated some errors; we are working closely with the vendor to find the root cause. If we need to replace any hardware to solve this issue we will announce the outage in advance.
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Brief distruption of wired networks on 3rd floor of Cory
Network equipment related to some (such as the 41 subnet) but not all third floor networks was temporarily down due to a UPS being accidentally unplugged by a worker.
Resolved as of 2008-11-03 12:10:00