Error Code 502

Associated Error Category: Binding Found But Unable To Route

Description: Request message is received and a binding with a PRCF was found. Policy DRA can't route the request to PCRF due to DSR queue full error.

Associated P-DRA Alarm/Event: Event 22707 - Policy DRA Diameter Message Processing Failure (refer to the DSR Alarms and KPIs Reference for details about this event)

Associated Measurement: RxRequestMsgQueueFullDiscard

Associated Diameter Interface / Message Type:

Gx/Gxx CCR-I
Rx AAR
Gx-Prime CCR-I

GUI Configurable: Yes

Recovery:

See findSessionRef Processing in the Error Resolution appendix of the Policy DRA User Guide to investigate and understand the circumstances where this error occurs.
Go to the P-DRA NOAM GUI to collect information for possible root causes that may resort in the DRL queue being full:
- Go to Main Menu > Policy DRA > Status & Manage > Server to verify is some DA-MPs have failed. If some servers on the same side fail, the traffic will be distributed amongst the remaining DA-MPs).
- Go to Main Menu > Status & Manage > KPIs to check the ingress traffic rates of the DA-MPs. Each DA-MP in the site should have about the same ingress rate in normal situation.
- Go to Main Menu > Alarms & Events > View History to search for relevant congestion alarms. The Display Filter may be set as Timestamp or Server to include P-DRA, DRL, or DCL alarms.
Go to Main Menu > Measurements > Report to obtain the measurement report for all relevant measurements.