22008 - Orphan Answer Response Received

Event Type:

DIAM

Description:

An answer response was received for which no pending request transaction existed, resulting in the answer message being discarded. When a Request message is forwarded the system saves a pending transaction, which contains the routing information for the answer response. The pending transaction is abandoned if an answer response is not received in a timely fashion.

Severity:

Info

Instance:

<TransConnName>

HA Score:

Normal

Throttle Seconds:

10

OID:

eagleXgDiameterOrphanAnswerResponseReceivedNotify

Cause:

An answer message is received without any corresponding pending transaction. The message is discarded.

Diagnostic Information:

Reasons the pending transaction is not available include:

• DSR's Tx sender buffer is filling up causing connection congestion.

• PAT expiry or total transaction life-time expiry is causing transaction timeout.

The associated measurement tag for this event is RxAnswerUnexpected (10008), which is the number of times that the DRL receives an answer message event from DCL/RCL with a valid Connection ID for which a pending transaction cannot be found.

Recovery:

1. If this event is occurring frequently, the transaction timers may be set too low. Navigate to Diameter > Configuration > Pending Answer Timers to view and/or modify the Pending Answer Timer, Transaction Request Lifetime, peer node settings.