Egress Throttle Groups are used to perform 2 functions: Rate Limiting and Pending Transaction Limiting. Each of the functions is independent of the other and can be optionally configured and controlled separately.
Each function has an individual Administration State (Enable/Disable) and Operational Status (Available, Degraded, or Inactive).
The Diameter > Maintenance > Egress Throttle Groups page provides the Operational Status of the Egress Throttle Groups Rate Limiting and Pending Transactions Limiting functions, including an Operational Reason for the status.
Egress Throttle Groups use the Leader sourcing method for reporting of maintenance status. The Leader sourcing method is used because each DA-MP will have identical status data; only the DA-MP Leader will report the maintenance status to the GUI.
If either Rate Limiting or Pending Transaction Limiting Operational Status is Degraded, then the Diameter Routing Function will throttle the Request messages according to highest severity. For example, if Rate Limiting Operational Status is Congestion Level 1 and Pending Transaction Limiting Operational Status is Congestion Level 2 , then the Diameter Routing Function will throttle Request messages according to Congestion Level 2 (all Request messages with Priority 0 or 1 will be throttled).