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Border Firewall Maintenance, Sep. 26 and 28 5-7AM

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On Tuesday Sep. 26 and Thursday Sep. 28, between 5 and 7AM, bIT will be performing maintenance on the hardware which backs the EECS and BWRC border firewalls. During these two two-hour periods, there may be some loss of network traffic entering and leaving the EECS networks.

See the below bIT status posts for updates, as this page will not be updated.
Tues. Sep. 26 5AM – 7AM: https://systemstatus.berkeley.edu/event/190263/
Thur. Sep. 28 5AM – 7AM: https://systemstatus.berkeley.edu/event/190264/

Please email us at help@eecs.berkeley.edu if you have any questions about how this maintenance will affect EECS networks.

Soda 4F Network Maintenance, Sat. Aug. 12

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Between 11AM and 4PM on Saturday, August 12th, we will be performing maintenance on network switches serving the south side of Soda 4th floor. Wired and wireless networks in the Sky Computing Lab, classroom 405, conference room 411, and the 4th floor main hallway will experience a number of disruptions during this maintenance window.

Update 8/12 14:39: This maintenance is complete and all networks should be online. Please contact us at help@eecs.berkeley.edu (or @dcalderon on Sky Slack) if you notice any ongoing issues.

Retiring Windows Internet Naming Service (WINS)

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Windows Internet Name Service (WINS) is a legacy computer name registration and resolution service from Microsoft that maps computer NetBIOS names to IP addresses, and is implemented on our network with the machines wins1.eecs.berkeley.edu and wins2.eecs.berkeley.edu. Computers generally use DNS (Domain Name System) now, and most organizations stopped using WINS years ago.

We are planning to (finally) retire this legacy service on the following schedule:

  • Tuesday, August 8: remove configuration of WINS servers from EECS Domain Controllers, and from our NetApp fileservers. We don’t think any clients should notice this change, but we’ll be on the lookout for any issues that come up.
  • Tuesday, August 15: update DHCP to no longer specify WINS servers to DHCP clients. DHCP clients should have their network info updated over the next day or so, but will continue to resolve hostnames via DNS. So in general, we expect clients should notice no change. However, if your Windows client is relying on a shared Windows resource from a machine without a fixed IP name (for example, a shared lab printer attached to a Windows PC), you may lose access to that resource. Access to home.eecs, project.eecs, and printers on print.eecs will not be affected.
  • September 1-30: We will monitor any remaining WINS client traffic to wins1.eecs and wins2.eecs, and attempt to notify registered sysadmins to update clients accordingly.
  • Tuesday, October 3: turn off WINS.

We expect few people to be affected by the retirement of WINS, but if you do have a problem after one of the changes, feel free to contact the Helpdesk with any details.

Cory Hall network unstable

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Beginning around 11am today, July 14th, the network in Cory Hall began to exhibit some problems. At this time the network is unstable, with intermittent connectivity. Network staff are currently investigating the problem, and this article will be updated as we learn more.

Update 7/14 12:11: Networks on floors B,1,2,3,5 should now be stabilizing. 4th floor networks are still offline while we pinpoint the exact cause of the issue.

Update 7/14 12:30: We have isolated the root cause and have re-enabled networking on the 4th floor. Wired networks are online, and wireless will be back online shortly.