Wired Networking

There will be a brief network outage this evening at 8PM while we perform a software upgrade on the main router for Soda Hall. The outage will affect all Soda Hall networking as well as any services hosted in Soda Hall, and should last for approximately 5 to 10 minutes.

This is a vendor-recommended software upgrade to address bugs which have been affecting management of the device as well as some performance issues.

Please contact help@eecs.berkeley.edu with any questions or comments.
[Read more…] about Soda Hall Network Maintenance, 8/13/15 8PM

There was a partial network outage today for floors 1-4 of Sutardja Dai Hall; the outage affected any machine on the 128.32.156.0/24 subnet which was using an address between 128.32.156.64 and 128.32.156.127 (25% of all hosts on these floors). Hosts in this address range had EECS connectivity but were unable to reach campus or the wider Internet. Wireless service in some areas was likely also influenced, as the wireless access points use this subnet for their connectivity.

Through collaboration with IST-NOS we learned that a typographical error was made while adding a new route in the campus datacenter at Earl Warren Hall, causing traffic destined for these 64 hosts to land in Warren rather than Sutardja Dai. The erroneous route was pulled and traffic is now being routed correctly.

If you continue to notice any issues, please email help@eecs.berkeley.edu.

Resolved as of 2015-07-07 17:25:00

Following the completion of yesterday’s Soda Power Outage, and some network maintenance that was also completed during the outage, we discovered there was a network issue affecting a number of Cory Hall clients and wireless access points.

Some hosts affected include:

• cusg.eecs.berkeley.edu
• www-bsac.eecs.berkeley.edu
• venus.eecs.berkeley.edu
• cory.eecs.berkeley.edu
• imail.eecs.berkeley.edu
• terra.eecs.berkeley.edu

We will update here as our investigation continues.
[Read more…] about Network disruption following the Soda Power Outage

Soda Hall will be powered down between 0600 and 1900 on Saturday, May 30th in order to complete the electrical interconnect between Soda and Jacobs Halls. During this time the building will be completely shut down and entrance to the building will not be allowed.

We have arranged for reserve power to be provided to the network and server rooms in 288, 290, and 420A Soda, such that department and research infrastructure and services will remain online and available to users outside Soda Hall.

We recommend powering off all equipment such as desktop computers ahead of time to prevent any issues caused by unexpected power loss. Additionally, any sysadmins hosting equipment in machine rooms other than 288, 290, and 420A will need to power their machines down in advance of the outage.

Should you need access to the building during the outage (for example, you are a sysadmin who would like to take advantage of the downtime to perform deferred maintenance), please email Miles Bianchi (miles.bianchi@berkeley.edu) for consideration by the Safety Committee. This access will only be granted for special cases.

We apologize for any and all inconvenience caused by this outage. If you have any questions or concerns, please contact Derek (dcalderon@berkeley.edu) for IT issues or Miles (miles.bianchi@berkeley.edu) for facilities or safety issues.
[Read more…] about Soda Hall Building Shutdown, May 30th 2015

An attempt at adding a new switched link in the network core resulted in a broadcast storm which crippled the EECS network between approximately 5 and 6 PM this evening. The maintenance was rolled back and the network was allowed to stabilize. We will reattempt this maintenance in the future after we have analyzed the data gathered to determine what went wrong.
[Read more…] about Intermittent Network Outages 5/4/15

Tonight, March 12th at 6:30, there will be a scheduled maintenance in Cory Hall to add a redundant 10-gigabit link between the building’s main router and the access network. A less-than-one-minute outage is expected while the cutover is performed, which will affect both the wired and wireless networks in Cory Hall. This maintenance will increase the resiliency of the Cory Hall network in the event of a device or link failure.
[Read more…] about Scheduled Network Maintenance, Cory Hall, Tonight 3/12

We’re getting reports of widespread intermittent loss of network connectivity, including EECS-Secure being down. Staff are working to determine the source of the problem.
[Read more…] about widespread network disruption

During electrical work for 340 Soda, power for the Soda 3B network closet was unintentionally shut down, affecting wired and wireless networking for about half of third floor Soda, for about 15 minutes.

Power to the network closet has been restored, and normal service is resumed.

Resolved as of 2015-03-05 09:33:00

Approximately 4AM this evening, we lost contact with the access switch in the Nanolab on the 6th floor of Sutardja Dai Hall. We presume the network to be down at this time, and network staff will begin diagnosis as soon as they arrive onsite. This should affect users in the 6th floor area of the Nanolab only, as the rest of SDH uses separate switches.
[Read more…] about Network Outage, 6th Floor SDH Nanolab