Global IP Transit, MPLS/VPLS/L2VPN, DWDM/Wavelength
One of our third-party providers has advised that they need to perform maintenance at Goswell Road (GOS). The maintenance is classified as "At Risk" only. In the case of an outage, which is not expected, it might impact on our Dark Fibre link from Goswell Road (GOS) to Maidstone (CDC). During this maintenance, we might have periods of reduced resiliency.
During this maintenance, our third party will be accessing the vault in which our GOS<->CDC dark fiber is located, but the works are not intended to be done on our link.
[Layer-3 IP Transit Services] Our core IP Transit network automatically re-routes all protected services if fibre break is detected and brings the failed fibre back into service only once it has been stable and error free for a period. As such, all Layer-3 services will have possible path switches at start and end of this work, depending on destination path selected, with potential changes in latency to some destinations, no significant disruption is expected to any IPT services at any location even if the fiber is affected.
[Layer-2 MPLS/VPLS Services] Standard Ethernet Services which have a path between GOS<->CDC may experience an outage. Protected Ethernet Services which have a path between GOS<->CDC may see a switch/re-route during this work; no significant disruption is expected. Diverse Ethernet Services which include a path between GOS<->CDC may see the loss of one member; no parallel outages of both feeds are expected.
[Wavelength Services] Services between GOS<->CDC may experience an outage.
This maintenance has been scheduled under ticket: [CDC-ID: #242867]