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Mobile Network Infrastructure Getting Started

GTP Cause Values in Logs

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GTP Cause Values in Logs

When a GTP network element accepts or rejects a GTP request, the response includes a cause value in the Information Element indicating the request is accepted or the reason for a rejection.

When a network element such as PGW or GGSN accepts or rejects a GTP request, it sends a GTP-C response message that includes a cause value in the cause Information Element (IE) indicating whether the request is accepted or the reason for rejection. Logs display the cause value in the GTP cause field.

GTP	Cause Value	Description
GTP v1	128	Request Accepted
	192	Non-existent
	193	Invalid message format
	194	IMSI / IMEI not known
	195	Mobile station is detached from the GPRS network.
	196	Mobile station is not responding to the GPRS network.
	197	Mobile Station refuses connection
	198	GTP version not supported.
	199	No resources available.
	200	Service not supported.
	201	Mandatory IE incorrect
	202	Mandatory IE missing
	203	Optional IE incorrect
	204	System failure
	207	GPRS connection suspended
	208	Authentication failure
	209	User authentication failure
	210	Context not found
	211	All dynamic PDP addresses are occupied
	212	No memory available
	213	Relocation failure
	219	Missing or unknown APN
	220	Unknown PDP address or PDP types
	222	APN access denied no subscription
	223	APN restriction type incompatible
	229	APN congestion
GTPv2	16	Request accepted - 2
	64	Context not found
	65	Invalid message format - 2
	66	Version not supported by next peer
	67	Invalid length
	68	Service not supported - 2
	69	Mandatory IE incorrect - 2
	70	Mandatory IE missing - 2
	72	System failure - 2
	73	No resources available - 2
	78	Missing or unknown APN - 2
	81	Relocation failure - 2
GTPv2	84	All dynamic addresses are occupied
	89	Service denied
	91	No memory available - 2
	92	User authentication failed - 2
	93	APN access denied – no subscription - 2
	94	Request rejected
	96	IMSI/ IMEI not known - 2
	100	Remote peer not responding
	103	Conditional IE missing
	104	APN restriction type incompatible - 2
	109	Invalid peer
	110	Temporarily rejected due to handover
	113	APN congestion - 2

GTP Event Codes

GTP Message Type