SWITCHlan Trouble Tickets

Transparency is very important to us. We therefore publish all trouble tickets about issues that have an impact on our customers. We show both currently open tickets as well as all closed tickets.

Ticket 20230913_1

Ticket Number: 20230913_1Ticket State: CLOSED
Ticket Opened: 2023-09-13 16:10Ticket Closed: 2023-09-15 14:23
Ticket Description: BGP distribution problem for some routes

Problem Description:

In the process of cleaning up some obsolete configuration from our
routers, we inadvertently introduced an error that prevented us from
distributing several IPv4 routes of SWITCHlan members to the Internet.
This caused temporary unreachability of those addresses, starting at
around 14:02. Affected ranges include:


After being alerted to and analysing the issue, we reverted to the
previous configuration on the routers connecting the concerned
customers. Connectivity was fully restored for all affected sites by

We apologise for this unplanned interruption and will work on process
improvements that prevent such incidents in the future.


From 2023-09-13 14:11 until 2023-09-13 15:52
Impact: Partial loss of connectivity
Service: network access
Sites: HUG

From 2023-09-13 14:02 until 2023-09-13 15:50
Impact: Partial loss of connectivity
Service: network access
Sites: IMD

All times are in local Swiss time CET / CEST.
For all questions about this ticket, please send mail to noc@switch.ch
or call +41 44 268 15 30.