The adoption of Ciena's 5170 Service Aggregation Switch and its 6500 Packet-Optical platform will make for an adaptive network that is secure, can handle increasing demand and provide faster and more comprehensive protection in the event of a fiber cut
or equipment failure.
But if there is a failure, such as from a fiber cut
or weather event, because of the point-to-point design of their network, they may not have network redundancy in place and may be more prone to extended service interruptions.
Sometimes it's a customer calling in to tell us, "My line sounds like eggs frying!" or, "My line is a poppin' and a crackin'." Sometimes it's a larger-scale problem, such as a fiber cut
causing numerous customers to be out of service.
The signal also turns on the cutter, which reportedly senses the speed of the moving fiber strands and adjusts itself to maintain a preset fiber cut
The backbone was physically connected as a ring so that, in the event of a fiber cut
, all traffic in the network would be rerouted through another fiber.
"We get an occasional fiber cut
on those routes that brings down the whole region for hours at a time.
Restoration times in the event of a fiber cut
on a transport path are under 50 milliseconds.
When a fiber cut
occurs on an LND unprotected lightpath, the Photuris V32000 appears entirely transparent to White Rock Networks' VLX2010 metro access nodes, which use standard SONET UPSR switching features to protect the traffic traversing that lightpath.
It also enables the network to instantly reroute signals in the event of a fiber cut
Can a single fiber cut
(say, the result of a backhoe cutting into buried cable or a vehicle knocking down a utility pole with overhead fiber) take down the network?
Upon completion, the network will offer a self-healing system that provides the ultimate security and reliability by allowing instantaneous rerouting in the event of a fiber cut
* Once it is clear that there must be an upstream fiber cut
, the I & R tech would typically drive out to the route and look for the offending backhoe.