A Minor (green)—Events that might diminish the performance of a network function B Major (yellow)—Serious events that affect, but do not shut down, the operational of a network function. C Critical (red)—Serious events that impair or shut down the operation of an overlay network function. D Medium (blue)—Events that might impair the performance of a network function.

• Critical (red)—Serious events that impair or shut down the operation of an overlay network function. • Major (yellow)—Serious events that affect, but do not shut down, the operational of a network function. • Medium (blue)—Events that might impair the performance of a network function. • Minor (green)—Events that might diminish the performance of a network function