[Update 20 Apr – 22:52] Links are operating normally. Future UCSD maintenance will be required to finish the originally scheduled work. — SDSC has been notified that there are some degraded networking paths within the UCSD networking fabric. Some users may see connection problems accessing both UCSD and SDSC resources.
Category Archive: News
General announcements
[Resolved] SDSC Outage Notification – Limited Network Connectivity – 16 March 2021, 10:00
[Update – 12:51] SDSC is no longer seeing networking issues to Spectrum customers. Please contact SDSC Support if you continue to experience limited connectivity. [Update – 11:45] SDSC/UCSD networking provider CENIC has informed SDSC that the issue involves Spectrum’s peering with an intermediary, not with CENIC directly. As a result, Spectrum customers may see limited …
SDSC router card replacement, 11 Mar 2021 – 2000-2100
[Update 20:35] The replacement is complete and all links are up. — We have received the replacement line card for our back up router (from the failure on Saturday night), and have scheduled installation for this Thursday evening. This procedure is expected to be transparent to all users, and only bring back into service some …
SDSC Network Core maintenance – Saturday, March 6, 2021 1700-0000 PST & Sunday, March 7, 2021 1700-2200 PST
[Update – 23:58] All maintenance is complete and we are CANCELLING the maintenance window for 7 March 2021. There was a card failure in the backup router for which we have a replacement in process. Once that arrives at the datacenter we will announce a replacement time — we expect no disruption as this is …
SDSC Planned Maintenance – Linux Update/Reboot – 16 Mar 2021,
Colleagues: On Tuesday, 16 March 2021 between 17:00 and 23:00, general system maintenance, including updates and reboots, will occur for the following systems. Systems will be unavailable during reboots. Please save all work prior to the 17:00 maintenance period. Updates will be posted on the SDSC status page at http://status.sdsc.edu. alexandrovlab-ftp.ucsd.edu ara.sdsc.edu ashcroft.sdsc.edu athena.sdsc.edu atlas-compute.sdsc.edu …
SDSC Outage Report – Datacenter Networking – 1 March 2021,
[Update: 15:10] A small subset of networks within the SDSC data center environment suffered a brief outage when one of our links bounced as part of our ongoing investigation with Juniper technical support. We are still actively working with the JTAC team to correct our intermittent connectivity, stemming from our route engine crash on 2/9/21. …
SDSC Emergency Maintenance – Core Router Maintenance – 25 Feb 2021,
[Update 03:00] All work has been completed. Please contact colosupport@sdsc.edu with any questions or concerns [Update 02:25] Engineers are still working to verify and recover stale NFS mountpoints. Some webpages may be unavailable while the NFS filesystems are unavailable. [Update 01:16] Engineers are still verifying functionality of routes. Some services including project storage and USS …
Networking issues on 172.25.119.0/26 subnet
[Update: 16:00] Networking engineers implemented a temporary fix to resolve the networking problems. A permanent solution is forthcoming with the planned reboot of the core router this evening. — We are seeing networking issues on the 172.25.119.0/26 subnet which may be causing slowness or missing network packets. SDSC network engineers are investigating the cause of …
[Resolved] SDSC Outage Notification – Partial Network Outage – 20 Feb 2021, 06:35-09:10 PST
[Update 11:15 PST] Restitution efforts are complete as of 10:45 PST with no lingering issues observed over the past half hour. Please email support@sdsc.edu to report any outstanding issues. —————————————————— SDSC received internal alerts of inaccessible services this morning at 06:35. The issue appears to be isolated to a subset of the SDSC network. The …
SDSC Planned Maintenance – Linux Update/Reboot – 16 Feb 2021,
[Update: 20:17] All linux patching is complete. Please contact support with any questions or concerns. [Update: 17:38] Maintenance has begun. We will update again as patching is nearing completion. Colleagues: On Tuesday, 16 February 2021 between 17:00 and 23:00, general system maintenance, including updates and reboots, will occur for the following systems. Systems will be …