University of Cambridge Computer Laboratory - Notice history

We believe that (with the exception of the Robotics-CL and govroam networks, as previously mentioned) the wifi service has been fully restored. Please contact service-desk@cst.cam.ac.uk if you are still experiencing any issues. We regret the unexpected disruption.

Fixing the UniOfCam-Guest network will require us to withdraw the Robotics-CL and govroam networks which we believe not to be in use currently. The new software platform for our wifi infrastructure is unexpectedly limited to 6 networks (SSIDs). Please contact service-desk@cst.cam.ac.uk if you are relying on either Robotics-CL or govroam networks.

We believe wifi is fully operational again, except for UniOfCam-Guest. We continue to work with UIS on this.

As service starts to be restored, you may find that eduroam starts working before Internal-CL or wgb. If you are seeing our networks listed but are struggling to connect, try selecting eduroam.

Progress is being made towards a solution. We have implemented an emergency fix for two issues which unexpectedly caused UIS's new wifi setup to be incompatible with our existing departmental network configuration. We understand that UIS are still working on some other problems preventing wifi from functioning. We have no ETA at present for a resolution of those.

Wired ethernet connections are, as ever, available throughout the building upon request to service-desk@cst.cam.ac.uk.

Statement from UIS:

The work scheduled to take place this morning to migrate access points (APs) on the West Cambridge site is overrunning. We had hoped to complete the work between 06:00 and 09:00 but have unfortunately not been able to complete the work in this timeframe. We are working to complete as soon as we can and will update this message when complete. We're sorry for any inconvenience caused by this delay.

This incident was previously resolved.

WGB and GN09 infrastructure is operational again. Most GN09 servers and services have been restored.

It is likely that some systems may not have started correctly, or may have entered a broken state if running elsewhere but relying on systems in GN09. This is especially likely if they use filer or other networked storage that lost power. Contact service-desk@cst.cam.ac.uk to report any issues.

The UPS supplying power to part of GN09 has apparently suffered a fault whilst powering back up after the outage, and one third of its capacity is currently inoperative; resilience is reduced until repairs can be arranged.

Power appears to have been restored, and some systems have come back up automatically, however full restoration of services will take time and will only begin once we are confident that the power supply is stable and the UPS batteries have had some time to recharge.

We are aware of at least one apparent hardware failure arising from this outage so far.

Servers in GN09 not connected to a UPS supply, and machines in offices, have lost power. Servers in GN09 connected to a UPS supply are likely to lose power in a few minutes. UK Power Networks has confirmed the outage and expects power to be restored around 01:30-02:30. Most departmental IT services will be unavailable until further notice.