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Instructional & Research Information Systems

IRIS Staff

Planned Sutardja Dai Hall electrical shutdown

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There will be a temporary shutdown of power on Sat May 2, from 8am to noon to verify Building Automation Function with loss of power.

All network equipment, including wireless, should run on UPS and then emergency power once the main generator kicks in. While we expect no problems, this is the first operational test of the network UPSs.

(Note: All switches successfully remained online over the weekend. May 4, 0900.)

Resolved as of 2009-05-02 12:00:00

Campus Wide AirBears wireless outage

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To: ucb-net-announce@lists.berkeley.edu
Organization: IST-Infrastructure Services

EMERGENCY UNSCHED OUTAGE Campus Wide April 28, 2009 11:00am – unknown

Equipment: AirBears Wireless Network
Location: Campus Wide
Date: April 28, 2009 Start: 11:00am End: unknown

Description:
AirBears login slowness reported in many areas of campus. Login times have been observed to exceed 10 minutes. Current cause is unknown. Will provide more information when it becomes available.

[More info](http://ucbsystems.org/2009/04/28/emergency-airbears-wireless-network-outage/)

[Read more…] about Campus Wide AirBears wireless outage

Router Maintenance

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As a followup to the network disruption Friday afternoon, I’ll be retesting the primary Cory Hall 10Gb module, and will reconnect the secondary links which were disabled Friday.

I anticipate no service disruption, but because the line card is suspect, and there is potential for problems, this work is scheduled for very early in the morning.

Unfortunately some of the problems we initially diagnosed as part of the routing troubles turned out to be server misconfiguration.
[Read more…] about Router Maintenance

Network routing & DNS disruptions

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We experienced several related network disruptions Friday afternoon. Beginning with reports at noon of DNS outages from Sutardja Dai Hall, there initially appeared to be problems with that building’s router failing to forward packets correctly. Resetting the links to the DNS service switches initially appeared to solve the issue, but additional connectivity problems between Cory and S-D were discovered later.

While following error messages generated by the primary 10Gb line card in the Cory Hall router, some wired subnets in Cory were temporarily isolated from the rest of the network and the Internet. This outage from 4:20-4:30pm occurred when the suspect line card failed to resume forwarding traffic after running diagnostics. Network staff were immediately aware of that disruption and quickly reestablished basic connectivity on a different port.

While the symptoms have been mitigated, the root cause of the outage has not been fully diagnosed and network is running without full redundancy. Network personnel are planning followup work and are actively monitoring this problem in the event that it reoccurs.
[Read more…] about Network routing & DNS disruptions

IMAP disruption

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The imap service was temporarily down due to a panic on the cluster node that it was running on.

The service failed over to the other cluster node and is back online.

The service outage was from approx 13:30 to 13:37.

April 2009 Server Patching

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Microsoft will release their patches for the month on Tuesday, April 14th, 2009.

PRINT, RIS, WINTERM and WINSWW will automatically patch and reboot Wednesday, April 15th, at 3:00 am.

macserver.eecs and WINTERM will be down for software updates Wednesday, April 15th, from 6:00 a.m. – 7:00 a.m.

Resolved as of 2009-04-16 08:45:00