How are packet drop and threshold alarms triggered?


Packet Drop alarms and Sustained Usage Threshold Alarms displayed on the Services > Site Summary page in Masergy Intelligent Service Control are designed to proactively alert customers to trends in increasing bandwidth utilization.

By default, Packet Drop alarms are triggered when any packets are dropped on the customer connection by Masergy and not by the customer-provided equipment. The alarms are triggered within one hour of actual packet drop on the connection. Packet drop alarms are due to:

  • Service plane overload, in the case of voice and video.
  • Port speed overload in the case of critical, priority and normal.

Warning and Danger alarms are sustained usage alarms that are triggered by default when usage in the service plane exceeds the threshold of available service plane bandwidth for more than four hours in a 24-hour period.

  • By default, Warning alarms are triggered when usage in the service plane exceeds 50% of available service plane bandwidth for more than four hours in a 24-hour period.
  • By default, Danger alarms are triggered when usage in the service plane exceeds 75% of available service plane bandwidth for more than four hours in a 24-hour period.