Swedish Distributed Time Service - Operational Status

2022-10-22 20:46 UTC, finished 2022-10-23 02:05 UTC

  • Problems with one of 6 PTP distribution units in Stockholm. Equipment replaced

2022-10-05 18.30 UTC and for 2 hours

  • Cesium clock 0 in Stockholm node replaced. Time dissemination not affected.

2022-09-21 22:00 UTC and for 2 hours

  • Planned maintenance work with the router infrastructure in Luleå (lul1 & lul2). Occasional interruptions in the Unicast NTP service from Luleå might occur.

2022-09-13 21:00 UTC

  • Internal ethernet switch in Malmö node down, will be replaced 2022-09-14. Time dissemination not affected.

2022-09-05 13:00 UTC and for 2 hours

  • One PTP grandmaster in Stockholm node has internal problems. Restarted on very short notice, firmware updating and testing was done. Three customers affected.

2022-08-14 18:00 UTC and for 1 hour

  • Replacement of HROG 1 in Stockholm node. Time dissemination not affected.

2022-06-08 06:15 - 16:00 UTC

  • Unplanned downtime for unicast NTP in Luleå. Interruption of the unicast NTP service in Luleå has been observable since 2022-06-08, 06:15 UTC. This has no impact on our anycast NTP and PTP services in Luleå which are running normally. Issue has been resolved as of 16:00 UTC.

2022-04-11 00:01 UTC and for 1 hour

  • Planned maintenance work with the router infrastructure in Sundsvall (svl1 & svl2). Occasional interruptions in the Unicast NTP service from Sundsvall might occur.

2022-04-10 23:01 UTC and for 1 hour

  • Planned maintenance work with the router infrastructure in Gothenburg (gbg1 & gbg2). Occasional interruptions in the Unicast NTP service from Gothenburg might occur.

2022-04-10 22:01 UTC and for 1 hour

  • Planned maintenance work with the router infrastructure in Malmö (mmo1 & mmo2). Occasional interruptions in the Unicast NTP service from Malmö might occur.

2022-03-26 21:23 - 21:30 UTC

  • Unplanned downtime for unicast NTP in Malmö (mmo1 & mmo2). Occasional interruptions in the unicast NTP service were observable between 2022-03-26 21:23 - 21:30 UTC. There was no effect on our Anycast NTP.

2022-03-14

  • GNSS receiver in GBG repaired. Node no longer in holdover. Time scale precision was not affected.

2022-02-24 13:00 UTC

  • The NTS timestamping servers for sth1.nts.netnod.se and sth2.nts.netnod.se are now using Netnod's FPGA implementation running on Arista 7130 hardware.

2022-02-22 

  • GNSS receiver in GBG non-functional, node in holdover mode. Node will still fulfil PRTC requirements.
     

2022-02-21

  • NTS up and running on with Netnod's FPGA implementation on lab1.sth.netnod.se and  lab2.sth.netnod.se.  Note, this is a lab setup intended for interoperability testing and could break without warning.  Do not use it for anything important.

2021-05-11 22:00 UTC and for 6 hours

  • Planned maintenance work with the router infrastructure in Stockholm (STH3 & STH4). Occasional interruptions in the NTP service from Stockholm might occur.

2021-05-10 22:00 UTC and for 6 hours

  • Planned maintenance work with the router infrastructure in Stockholm (STH1 & STH2). Occasional interruptions in the NTP service from Stockholm might occur.

2021-05-05 00:00 UTC and for 1 hours

  • Planned maintenance work with the router infrastructure in Gothenburg (GBG1 & GBG2). Occasional interruptions in the NTP service from Gothenburg might occur.

2021-05-05 23:00 UTC and for 1 hours

  • Planned maintenance work with the router infrastructure in Malmö (mmo1 & mmo2). Occasional interruptions in the NTP service from Malmö might occur.

2021-05-05 22:00 UTC and for 1 hours

  • Planned maintenance work with the router infrastructure in Sundsvall (svl1 & svl2). Occasional interruptions in the NTP service from Sundsvall might occur.

2019-09-24 16:00 UTC and for 8 hours

  • Planned maintenance work with the router infrastructure in Sundsvall (svl). Occasional interruptions in the NTP service from Sundsvall may occur.

2019-06-12 16:00 UTC and for 10 hours

  • Planned maintenance work with the router infrastructure in Gothenburg (gbg). Occasional interruptions in the NTP service from Gothenburg may occur.

2019-05-14 15:00 UTC and for 5 hours

  • Planned maintenance work with the router infrastructure in Malmö (mmo). Occasional interruptions in the NTP service may occur.

2019-02-27 20:00 - 21:00 UTC

  • Routing problem made sth1.ntp.se and sth2.ntp.se unreachable over IPv4, addresses 194.58.202.20 & 194.58.202.148.

2018-12-05 23:05 UTC and for 5 hours

  • Planned maintenance work with the router infrastructure in Stockholm. Occasional interruptions in the NTP service may occur.

2016-04-04

  • Decomissioned old servers in Stockholm, Gothenburg and Malmö; move old addresses to new servers (ntp[12].{sth|gbg|mmo}.netnod.se).

2015-12-31

  • Decomissioned old server ntp1 in Stockholm (ntp1.sth....), took over old address on the new server