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A procedure in which the back-up path is switched in before the failed path is switched out. For a small period of time, both the primary and back-up paths carry the traffic.
Management Information Base
Mean Opinion Score
Multiple Protocol Label Switching; also Multiple Protocol Lambda Switching
Next Hop Label Forward Entry
A backup procedure in which a node is replaced in the event of a failure.
A label-distribution method in which a designated label manager (most often the egress Label Edge Router) assumes responsibility for label distribution.
Open Shortest Path First; a routing protocol
Open Shortest Path First with Traffic Engineering
Optical User Network Interface
Having more bandwidth than allocated traffic; allocating more assets (bandwidth) than are needed.
Having more allocated traffic than available bandwidth. (Telco)
Protocol Data Unit
Provider Equipment; also Provider Edge
Point-to-Point Protocol
Point-to-Point/High-Level Data Link Control over MPLS
A path in the switching database on which traffic engineering has been performed in order to accommodate traffic in case of a failure.
A path that is tested prior to switchover that meets the Quality of Service (QoS) standards of the primary path.
The path through which the traffic would normally progress.
A path for which there is an alternative back-up path.
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