Ticket Number : SUNETTICKET-8044 Ticket Type : Unscheduled Ticket Status : Closed Ticket Summary : Link Down JKG-VXJ Ticket Scope : Link Ticket Opened : 20220802 12:16 UTC Ticket Closed : 20220803 4:12 UTC Problem Start : 20220802 12:06 UTC Problem End : 20220802 19:02 UTC Affected organisations: * NORDUnet, SUNET, Netnod ---- Description: * Core link between Växjö and Jonköping is down. ---- Impact: * Below services are affected: SU-S003624 DWDM - Alienwave STHB - ORE NDN2 193.60THz NORDUnet SU-S003638 DWDM - Alienwave STHB- ORE NDN3 193.20THz (Cinia) NORDUnet SU-S003649 DWDM - Alienwave STHB - ORE NDN2 192.55THz NORDUnet SU-S003656 DWDM - Alienwave Wave for Netnod "dwdm1-stb.sth.netnod.se" to "dwdm1-nnb.mmo.netnod.se" Netnod SU-S003659 DWDM - Alienwave STHB - ORE NDN1 193.10THz NORDUnet SU-S003801 DWDM - Alienwave AW Netnod BCK - Malmö Netnod SU-S003820 DWDM - Alienwave AW Netnod STHB(stc.sth) - ORE(IXN.CPH) Netnod Reduced redundancy for affected organizations ---- Update: * 20220802 12:26 UTC Outage is being investigated. ---- * 20220802 12:54 UTC We see the signal towards Rusken (RUS) from Jonköping (JKG) has degraded that caused the outage. We will open a ticket with our fiber provider. ---- * 20220802 12:56 UTC Correction: It is the signal towards Jonköping from Rusken that has degraded. ---- * 20220802 13:19 UTC The issue is escalated to service provider. ---- * 20220802 17:54 UTC Service provider has performed OTDR measurement and found the signal degradation in sub-carrier´s segment. They have escalated to the concerned party. No ETR at the moment. ---- * 20220802 19:52 UTC Provider has replaced the faulty patch and services have restored. ---- Final ticket report: * Core link between Växjö and Jonköping is down due to a faulty fiber patch. Fiber patch was replaced and link restored. ---- -- For information about SUNET tickets and the sunet-fail list visit: http://www.nunoc.org/nunocweb/open_trouble_tickets.html