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Wired Networking

Wired network service

EECS Internet Outage, 9/22/16

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EECS’ Internet connection went down at approximately 6AM due to a loss of default routes normally advertised by campus BGP. The issue was isolated and the campus NOC restored the routes shortly before 10AM.

We believe network connectivity to be fully restored at this time. If you continue to experience issues, please email help@eecs.berkeley.edu.

Resolved as of 2016-09-22 09:48:00

Cory Hall Network Maintenance, 9/15/16

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We will be reconfiguring one of the transit links out of Cory Hall tonight at 5PM. There will be no general network or service outages, but some services will have a brief interruption in connectivity:

* Private networks which transit between Cory and Soda Halls (TIER, CEC, Viper)
* Machines in Cory Hall on the 169.229.59.0/26 and 128.32.38.0/23 networks (not including EECS-PSK wireless clients)
* The primary departmental WINS (Windows Name Service) server, but the secondary will remain online
[Read more…] about Cory Hall Network Maintenance, 9/15/16

Emergency Reboot, Nanolab 3/4 Switch 8/22/16

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We will be performing an emergency reboot of the switch which provides service to the third/fourth floors of the Sutardja Dai Nanolab at 12:15 PM today, in order to clear some bad state left over from this weekend’s upgrades. The third and fourth floors of the Nanolab will be without network connectivity for approximately five minutes.
[Read more…] about Emergency Reboot, Nanolab 3/4 Switch 8/22/16

Access Switch Upgrades, Sat-Sun 8/20-21

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At the suggestion of our vendor, we will be upgrading various access switches to the latest supported software version. This will affect wired and wireless clients in Soda, Cory, and Sutardja Dai Halls, and wireless users in Blum Hall.

The first set of these upgrades will take place Saturday night at 10PM and will occur in waves. We are upgrading sixteen switches in four waves and expect to be done by 11:30.

The second will take place on Sunday night at 10PM, will affect a smaller group of switches, and should be done by 10:30.

Brief network interruptions (on the order of five minutes) are expected for users in these locations while switches reboot. Most locations will experience a single interruption, but some will require two. Where possible, we will stagger reboots in an attempt to maintain Wi-Fi coverage.
[Read more…] about Access Switch Upgrades, Sat-Sun 8/20-21

Border Firewall Upgrade, Sat. 7/30 3-5 PM

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We will be performing a software upgrade of our border firewalls at 3PM on this Saturday, July 30th. The maintenance window is scheduled for 3-5 PM, but we expect it will take less time. This is a direly needed upgrade, as the code in production is nearing its tenth birthday.

Per the vendor, no service interruptions are expected, but short outages of our Internet connection are possible. All traffic internal to the EECS network will be unaffected. The Millennium research network resides outside of the firewall, which means that traffic between Millennium and the Internet will not be affected, but traffic between Millennium and the EECS network may be.

We understand this time may be inconvenient for some members of the community, but it was chosen due to staff and project management constraints. If you have a critical issue with this timing, please contact us at help@eecs.berkeley.edu and we can attempt to accommodate you.

This maintenance window is for the first of two needed firewall upgrades. If the first goes well and we are confident in the system’s stability, we will perform both upgrades on Saturday afternoon. If we are unable to do so, there will be a second upgrade window occurring in early August.

Please contact help@eecs.berkeley.edu with any questions or concerns.
[Read more…] about Border Firewall Upgrade, Sat. 7/30 3-5 PM

Partial Wired Network Outage, Cory 3rd Floor

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There is currently a partial wired network outage on the third floor of Cory Hall due to a possible hardware failure. Approximately half of the wired ports are offline. Wireless networks are unaffected.

We are working to have service restored as soon as possible. An update will be posted when service is restored or at 10AM, whichever comes sooner.
[Read more…] about Partial Wired Network Outage, Cory 3rd Floor

Internet Connectivity Issue 7/21/16

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EECS was without Internet connectivity from 8:06 to 9:13 AM this morning due to a firewall issue. The then-primary firewall appears to have hung in a manner that prevented the backup from taking over until network staff arrived onsite and manually intervened.

During the outage, users and machines on the EECS network were unable to access the Internet, and Internet users were unable to access EECS resources or the EECS Web site.

We are working to determine the cause of the issue as well as ways to mitigate similar cases in the future. We are also in the process of constructing an out-of-band management infrastructure to reduce time to repair in outage situations. No further interruptions are expected at this time.

If you continue to experience network issues, please email help@eecs.berkeley.edu or visit our helpdesk at 395 Cory Hall.

Resolved as of 2016-07-21 09:13:00

Cory Hall Server Net Maintenance, 6/2/16 9PM

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We will be performing maintenance on the Cory Hall restricted and server networks tonight at 9PM. Machines on the 128.32.244.0/25 and 169.229.60.128/25 networks (primarily, machines located in 165 Cory) will experience a brief loss of connectivity which we expect to last for less than 10 minutes.

The purpose of this maintenance is to migrate the default gateways for those subnets to a different router to address a possible traffic hairpinning issue. No reconfiguration will be necessary by sysadmins and there should be no visible lasting effect (other than reduced packet loss and/or latency on these networks).

Please contact help@eecs.berkeley.edu if you have any questions or concerns about this maintenance outage.
[Read more…] about Cory Hall Server Net Maintenance, 6/2/16 9PM