Tor1 > Tor2 fiber maintenance - 05-Jun-2024

[porcupine]

Hi Folks,

Please be advised of the following maintenance period(s):

Maintenance Window: Wednesday June 5th, 2024, 12:01am - 6:30am Eastern Time
Affected Device: Tor1 > Tor2 dark fiber - "West" Path (DWDM2.tor1 & DWDM2.tor2)
Affected Customers: Customers with direct wave services between the Tor1/Tor2 facilities.
Service Impacting: Wave services - Yes / everything else - no (precautionary notice only)
Expected Impact: Wave Services - service interruption, up to 6 hours.

Details: We have received a maintenance notification from the [West path] fiber provider, indicating:

"As part of our ongoing efforts to improve the performance, reliability and integrity of our network, we will be performing fiber infrastructure upgrades on Wednesday June 5th 2024 from 12:01am to 6:00am EDT.
Due to ongoing work by Metrolinx for Yonge North Subway Extension, cables will be relocated."

Our general network connectivity between the facilities operates over redundant pairs of DWDM units (covering the East and West fiber paths), customers who purchase 10GE wave services from us between the two facilities, and have a wave on the West path, will observe an outage to affected services during the maintenance window.

We do not anticipate any appreciable impact to other customers during this maintenance, due to the redundancies in place.

Regards,