This document specifies Operations, Administration, and Maintenance (OAM)
messages to indicate service disruptive conditions for MPLS-based
transport network Label Switched Paths. The notification mechanism
employs a generic method for a service disruptive condition to be
communicated to a Maintenance Entity Group End Point. This document
defines an MPLS OAM channel, along with messages to communicate
various types of service disruptive conditions. [STANDARDS-TRACK]