ConnOnsetCL3

Measurement Group: Connection Congestion

Measurement Type: Simple

Measurement Dimension: Arrayed (by Diameter Connection ID)

Description: The number of times the connection experienced the onset of CL3.

Collection Interval: 5 min

Peg Condition: Each time the congestion level for a connection changes from CL0, CL1, or CL2 to CL3

Measurement Scope: Server Group

Recovery:

If EMR Throttling is enabled for the connection, determine if either the maximum EMR may be set too high or the onset/abatement thresholds need adjustment.
Check to see if the Remote Busy Abatement Timeout is too small.
Verify whether or not other connections to the adjacent Diameter node are out of service, thus causing more traffic to be sent on this connection than what the adjacent Diameter Node can support on a per-connection basis.
Examine if the connection is over-subscribed from a routing perspective. Any recent changes to DSR routing configurable may have inadvertently diverted more message traffic to this connection.