|Ticket Number:||20171022_1||Ticket State:||CLOSED|
|Ticket Opened:||2017-10-22 12:05||Ticket Closed:||2017-10-23 17:24|
|Ticket Description:||optical node at EPFL down|
Problem Description:All optical links of oEL are down since 06:27.
All ECI chassis are not reachable anymore.
No services are currently affected - all traffic is rerouted to backup path.
Both defective modules have been replaced.
Two DC converter modules will have to be replaced; the replacement is scheduled for mid afternoon.
All links are up, normal routing restored. We are debugging remaining problems on the rectifiers
some links to neighbouring sites came up after power to the rack has been restored; we re working on the remaining problems
We guess there is a power problem in Rack M01 where our optical equipment is installed.
We will ask our contacts at EPFL to check it Monday morning.
For all questions about this ticket, please send mail to firstname.lastname@example.org
or call +41 44 268 15 30.