CS Network Status

This page lists both active and recently closed CS network alerts. If you would like more information about an alert, or if you have an issue you would like to report, send email to helpdesk [-at-] cs [dot] umd [dot] edu or call extension 52720.

Current Active Alerts

1 current active alerts

Updated Issue Summary Impact
07.02.2025 15:43 Maintenance work on our AVW datacenter firewall on 07/06/2025 from 10am to 12pm

All users of CS IT services housed in our datacenter may notice two network outages lasting fewer than 5 minutes each.

 		Moderate

Past Alerts

Updated Issue Summary Impact
12.22.2016 17:13 Thurs. 11/24 9pm-midnight: Network Maintenance

Tonight from 9:00pm - 11:59pm network maintenance may cause several periods of packet loss lasting up to 40 seconds.

 		Light
11.23.2016 18:04 Tue. 11/15 5am-6am: outage of "junkfood" home directory

From 5:00am-6:00am IT staff will perform "emergency " maintenance that will require a 30 min. outage of Linux "junkfood" home space during this timeframe.

 		Light
11.06.2016 23:13 Sun. 11/6 10pm-11pm: 3rd floor Network Maintenance

From 10:00p - 11:00pm, IT staff will perform maintenance on the switches on the 3rd floor. Rooms numbered 31xx or 32xx will experience disruption of service for up to 15 minutes.

 		Light
11.04.2016 15:22 Maintenance partially completed, to be rescheduled

Scheduled Network Maintenance for Wed. 11/2 was only partially completed. Fourth floor (41xx ) is done although outage time was almost 30 minutes. This was resolved around 11:45 PM.
Third floor (31xx, 32xx) to be rescheduled and expected to only take 10 minutes.

 		None
11.02.2016 23:48 Wed. 11/2 Network Maintenance

From 10:00p - 11:00pm, IT staff will perform maintenance on the switches on the 3rd and 4th floors. Rooms numbered 31xx, 32xx, or 41xx will experience disruption of service for no more than 10 minutes.

 		Light
11.02.2016 16:28 Thur. 10/27: CS Network Maintenance

Intermittent network outages should be expected from 8:15p through 12:30am tonight.

Between 8:15p - 10:00p there will be up to three network outages of a 10
min. duration. These outages will impact all of our services in the
building.

From 10p - 12:30am intermittent periods of up to 40 seconds of packet
loss may be expected.

 		Moderate
10.27.2016 12:05 Sun. 10/9 Noon - 2p:CSD wiki maintenance

On Sun. (Oct. 9) between Noon - 2pm ET, we will upgrade the department's wiki software. Please do not make changes to a departmental wiki page during this period. User changes made during the maintenance window will be lost.

 		Light
09.04.2016 11:42 Sun. 09/04 10AM-2PM: CSD System Maintenance

On Sunday (Sept.4) between the hours of 10:00am - 2:00pm we will update software on a few of our servers that will cause brief
disruptions in authentication and DNS services during this period.

 		Moderate
06.21.2016 10:42 Tue. 6/14 each PDU will be down. Machines with two power supplies will be OK.

If you have a machine with a single power supply in AVW 1138 or 1144, shut it down before 7 AM.
Only one PDU should be off at a time, so department services and any other machine with dual power supplies should stay on.

 		Heavy
06.13.2016 22:28 Thur 6/9 7:00pm - 10:00pm: CS network, procmail, junkfood maintenance

On Thursday 6/9/16 from 7:00pm - 10:00pm EST users may experience network outages due to maintenance. During the first fifteen minutes of maintenance, mail delivery via procmail and access to users' home directories on junkfood will be unavailable. Stale mounts on supported machines for users' junkfood home directories will be corrected following the outage.

 		Moderate