Rick Gallahers MPLS Training Guide: Building Multi Protocol Label Switching Networks

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.