Cisco Ggsn Unexpected Sig Messages

1.3.6.1.4.1.9.9.240.1.1.3

The number of unexpected GTP signalling messages received. Trigger Condition: This counter is updated whenever an unexpected Signalling message is received. Condition includes, a) A Response message for which there is no corresponding outstanding Request. b) A GTP control plane message a GSN is not expected to handle (such as a PDU Notification Request received by a GGSN). c) Charging messages in GTP path and vice-versa. d) LFN bit not being set when CG path uses short-header and vice-versa.