201211 - Public report

Unscheduled:

• November 23rd: There was a fiber break causing outage for DU.
• November 22nd: During a site intervention there was an outage on the terminating circuits in linköping. The outage was caused by a misunderstanding between the site technician and the engineer when checking and cleaning fiber connectors to and from the DWDM node.
• November 21st: A fiber break in Sundsvall caused outages on SUNET's core and MIUN's redundancy.
• November 12th: The link between m1fre and gu-br1 suffered an outage which caused loss of redundancy to GU as their green network connection was affected.
  The reason for the outage was a bad patch cable in suppliers sub-carriers equipment.
• November 7th: An outage was noticed on the link between Stockholm and Narvik. The reason was a cut power cable to the site in Abisko.
• August 14th: The degraded signal was caused by a damaged fiber during road construction works. This fiber pair was swapped as a workaround. The original fiber has been repaired and will be swapped back during a maintenance window next week.

Scheduled:

• November 26th: The faulty card has been replaced on a transmission equipment located at KTH.
• November 26th: A planned fiber maintenance between Växjö and Älmhult was performed to resolve a degraded signal issue.
• November 22nd: Planned maintenance was performed on the South Green network between Linköping and Sundhultsbrunn in order to troubleshoot signal quality issues.
• November 20th: Planned maintenance was performed to replace the patching for the SP red link in SUNET's PoP in Borås.
• November 8th: A planned maintenance to replace a controller card on one of our transmission equipment in Stockholm was performed successfully.
• November 6th: NORDUnet´s router was upgraded to a newer software version.
• November 4th: Carrier performed fiber maintenance in Göteborg.