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Ticket 20200707_1

Ticket Number: 20200707_1Ticket State: CLOSED
Ticket Opened: 2020-07-07 17:27Ticket Closed: 2020-07-13 10:14
Ticket Description: Unstable link between Bulle and Fribourg

Problem Description:

We experienced link instability between our routers in Bulle and Fribourg.
The cause is not clear yet.
The power levels on the transceiver varied also and several packets were dropped.
The situation looks stable again since 17:00.
As a temporary measure, we have redirected the traffic to avoid this link.
We will be observing the situation further and keep investigating.


From 2020-07-07 15:39 until 2020-07-07 17:00
Impact: Partial loss of connectivity
Service: P2P/OPN
Sites: Sommet-BUL

From 2020-07-08 00:15 until undefined
Impact: no more redundancy
Service: network access
Sites: Sommet


2020-07-13 10:15
The power levels remained low for a short period of time, which caused the instability and packet loss.
They recovered partially already on July 7th and reached the previous levels on July 8th.
Since then, the power levels are quite stable.
We suspect some local works on the sites. Unfortunately we can not troubleshoot a problem, that does not exist anymore.
Thereafter we close the ticket.

2020-07-08 00:15
loss of link Bulle - Glion (actually the only stable link to Bulle at this moment); this incident will be tracked with a separate ticket 20200708_1

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.