Just to provide an update, it is confirmed that the optical span that
encountered issues today was the same span that encountered issues on June
29th.  However, it is not clear that the two events had the same cause at
this point, as other characteristics of the issue in this instance were
different and the span is long, but work is ongoing to make a
determination.  Regarding the failover referenced, we are on a different
path now (it is not a backup per se, just a different one), and will remain
there with no plan at this point to change that, so no additional outage
for purposes of changing paths is expected at this time.

If further details regarding this outage become available we will provide
additional updates.  Any planned changes that might happen as a consequence
of this event in the future will be communicated via maintenance
notifications as usual.

Thank you.

-- 

Networkmaine NOC
University of Maine System
Maine School and Library Network
(207) 581-3587
[log in to unmask]


On Wed, Jul 20, 2022 at 1:32 PM Networkmaine <[log in to unmask]> wrote:

> At approximately 1:10pm this afternoon there was a network outage
> impacting many or all University locations for approximately four minutes
> affecting connectivity to and from the University network from the
> Internet.  The cause was an optical link failure, possibly related to the
> similar issue experienced on June 29th, though that is not confirmed at
> this time.  The link failure caused services to fail over to a backup path,
> and we believe all affected services are operational again at this time.
>
> Work is currently ongoing to troubleshoot the root cause of the issue, and
> further details will be posted when available.  If you are still
> experiencing issues you feel are related to this event, please contact
> Networkmaine to report and troubleshoot them.  Please note that if you
> connect to any University resources such as VPN or jabber, you may need to
> restart those connections to restore operation.
>
> Thank you.
>
> --
>
> Networkmaine NOC
> University of Maine System
> Maine School and Library Network
> (207) 581-3587
> [log in to unmask]
>