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Instructional & Research Information Systems

Wireless Networking

Wireless network service

Sutardja Dai Hall switch updates

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We’ve experienced unexpected blade reboots and multicast errors on some of the new switches in Sutardja Dai Hall. Per the vendor’s suggestion, I’ll be upgrading these to a newer software release.

Subnets Affected:
128.32.156.0/24, 128.32.247.0/25, 169.229.14.0/24, 169.229.222.0/23

The code revisions are close, so we expect to be able to perform a hitless upgrade; there should be no perceivable disruption. Nevertheless, I’m scheduling a 45 minute maintenance window (1715-1800) in case of problems.
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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/)

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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.
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Wireless network outage

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One of EECS switches requires to reboot On Jan 30 (Friday) at 6:00AM. This will affect EECS wireless services from 5-7 floors at Soda Hall. This rebooting should be less than 5 mins. Please keep your plan accordingly.

Resolved as of 2009-02-04 12:51:00

Wireless outage near BID center in the Hearst Memorial Mining Building.

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EECS Networks reports that the Wireless service near the BID center (3rd floor of the Hearst Memorial Mining Building) is out.

The Network Crew says the AP (the device that transmits and receives data for this location) has failed and will be replaced tomorrow morning likely before 9 a.m. (Wednesday, January 21st, 2009).

An update will be forth coming.
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