The Charlottesville site is experiencing issues with Internet connectivity this morning due to routing issues in UVa’s network. Email, Exchange and helpdesks are affected.
Update: Full connectivity was restored at approximately 8:15 Eastern time this morning. All services appear to be working normally.
What: CV Internet connection
When: 0840-0900 Eastern Thursday November 25, 2016 (Thanksgiving morning)
Why: Upgrade software on network switch
Required Action: None
The CV Internet border switch (the network device that sits between the CV network and UVA) will be rebooted at 8:40 AM Eastern Thanksgiving morning in order to upgrade the software. This upgrade is needed to address an issue where one of the two links to UVA, which connects NRAO-CV to the Internet, goes into error-disabled mode. When this occurs the CV Internet connection is reduced by 50%.
The downtime is expected to take between 10 and 20 minutes with the CV Internet connection restored by 9:00 AM.
During this time, external access to CV-based services will be temporarily interrupted, as will Internet access from systems in Edgemont Road and NTC. This includes:
* Exchange mail server and CV-based Unix mail servers
* NRAO instance of the ALMA science portal
* NRAO Science help desk and science web site,
* NRAO public wiki
plus other servers and services.
With the exception of some bulk data transfer mechanisms, intranet access between NRAO sites WILL NOT be affected.
Many CV-based services are offline this morning for scheduled maintenance, including
Updates will be posted to this topic as systems are returned to operation.
UPDATE 09:20 – XMPP Instant messaging is back online.
UPDATE 11:20 – Email services are back online. No further interruptions expected.
UPDATE 13:20 – Instant messaging and email services were disrupted again briefly but should no longer be interrupted.
UPDATE 14:05 – The login server ‘polaris’ is available, stable and connected to the lustre filesystems. This system should now be available for general use.
UPDATE 15:35 – All maintenance activities have been completed. All services should now be available.
Recent outage events