CISCO-GPRS-GTP-MIB

All MIBs › CISCO-GPRS-GTP-MIB

Organization: Cisco Systems, Inc.

Last Updated: 2005-09-19

Category: Cisco Devices, Mobile IP, Telephony and VoIP

Description: Supplies management objects for tracking GPRS Tunneling Protocol (GTP) tunnels, paths, and statistics on Cisco GGSN/SGSN platforms.

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What Is CISCO-GPRS-GTP-MIB?

CISCO-GPRS-GTP-MIB manages the GPRS Tunneling Protocol (GTP) on Cisco GGSN/SGSN mobile core network gateways, which provide wireless packet-data access over GSM/GPRS infrastructure. It exposes GTP path/tunnel configuration timers (T3, N3, echo request intervals), resource limits (bandwidth, maximum PDP contexts), charging gateway configuration, and notification-enable flags for fault conditions like echo failures or PDP context activation rejects. It supports monitoring both configuration health and operational faults of the mobile packet core: an operator can track dropped packets, echo/keepalive failures indicating a dead GTP path to a peer GSN, and whether resource limits like bandwidth or PDP context counts are being approached. It is a 3GPP-GTP-protocol-based MIB rather than an IETF-derived one, so it depends on 3GPP GPRS/GTP specifications for its semantics. It is deployed on Cisco GGSN/SGSN mobile packet core gateways in GSM/GPRS mobile operator networks. Engineers can download the CISCO-GPRS-GTP-MIB file directly to load it into their MIB browser.

IPNetwork Monitor allows you to monitor SNMP objects defined in CISCO-GPRS-GTP-MIB. Use the built-in SNMP Monitoring Browser to explore available variables, view their current values and descriptions, and select the objects you want to monitor. You can then create SNMP monitors, configure thresholds, and receive alerts when monitored values change.

Supported Devices

Cisco GGSN/SGSN mobile packet-core gateways (legacy GPRS/GTP, GGSN R1.4)

Monitoring Examples

An operator can poll cgprsGtpChargingGWTable to confirm the charging gateway configuration is correct and cgprsGtpDroppedPktsMonTime alongside cgprsGtpNoRespToEchoNotifEnable to detect a GTP peer that has stopped responding to echo requests, indicating a dead tunnel path affecting subscriber data sessions. cgprsGtpMaxNumPDPCxts and cgprsGtpGSNTotalBandwidthResrc show whether the GSN is nearing its configured capacity limits.

What Can Be Monitored

dropped packet monitoring
echo request/response failures
PDP context activation rejects
charging gateway configuration
GSN bandwidth resource utilization
maximum PDP context limit

Imported Objects

From CISCO-SMI

ciscoExperiment

OBJECT-IDENTITY

From SNMPv2-CONF

MODULE-COMPLIANCE
NOTIFICATION-GROUP
OBJECT-GROUP

From SNMPv2-SMI

Counter32
Gauge32
Integer32
IpAddress
MODULE-IDENTITY
NOTIFICATION-TYPE
OBJECT-TYPE

From SNMPv2-TC

DisplayString
RowStatus
TruthValue

OIDs

OID symbolic	OID numeric	Type	Access	Description
ciscoGprsGtpMIB	1.3.6.1.4.1.9.10.48			The MIB Module for managing the General Packet Radio Service(GPRS) Tunnelling Protocol(GTP) on Gateway GPRS Support Node (GGSN) and Serving GPRS Support Node(SGSN).
ciscoGprsGtpMIBObjects	1.3.6.1.4.1.9.10.48.1
ciscoGprsGtpConfig	1.3.6.1.4.1.9.10.48.1.1
cgprsGtpGeneralConfig	1.3.6.1.4.1.9.10.48.1.1.1
I32 cgprsGtpT3TunnelTimer	1.3.6.1.4.1.9.10.48.1.1.1.1	Integer32	read-write	The T3-TUNNEL timer for mobility management. This timer is started by the 'Old SGSN'. Whilst the timer is running, the T-PDUs received by the 'Old SGSN' (from the GGSN), and any buffered T-PDUs are forwarded to the 'New SGSN'.
I32 cgprsGtpT3ResponseTimer	1.3.6.1.4.1.9.10.48.1.1.1.2	Integer32	read-write	The T3-RESPONSE timer for retransmission. This timer is started by GGSN, upon the transmission of a signalling request message; it is used for message retransmission purposes, in the event that no response is received by the time the timer expires. Note that the total wait time (cgprsGtpT3ResponseTimer*cgprsGtpN3Requests) must be shorter than the Mobile System (MS) wait time between retries of Attach and RA Updates; The product of cgprsGtpT3ResponseTimer and cgprsGtpN3requests must be less than the minimum value of the Attach Timer(T3310) and the Routing Area Update timer(T3330). The cgprsGtpT3ResponseTimer timer, according to the standards, recommends an adaptive back-off mechanism, using increasing values, e.g., 1, 2, 4, and 8 seconds.
I32 cgprsGtpN3Request	1.3.6.1.4.1.9.10.48.1.1.1.3	Integer32	read-write	The N3-REQUESTS value. Maximum number of times a signalling request message is retransmitted in the event of no corresponding response message.
I32 cgprsGtpN3BufferSize	1.3.6.1.4.1.9.10.48.1.1.1.4	Integer32	read-write	The N3-BUFFER-SIZE value. This is the size of the receive buffer for G-PDUs and signalling request messages. If a packet arrives with more data bytes then the receive buffer can contain, the excess bytes will be discarded.
I32 cgprsGtpEchoRequestTimer	1.3.6.1.4.1.9.10.48.1.1.1.5	Integer32	read-write	The time interval to transmit 'Echo Request' message. 'Echo Response' message is normally received in response to 'Echo Request' message. In the event of no response to the 'Echo Request' message, a notification is generated identifying the peer GSN (i.e. cgprsGtpGSNid ), which fails to respond.
I32 cgprsGtpGSNTotalBandwidthResrc	1.3.6.1.4.1.9.10.48.1.1.1.6	Integer32	read-write	The total amount of bandwidth resource on the GGSN.
I32 cgprsGtpMaxNumPDPCxts	1.3.6.1.4.1.9.10.48.1.1.1.7	Integer32	read-write	The Maximum number of PDP contexts allowed. The PDP context contains the Session Management parameters that are necessary to transfer between SGSNs at the Inter SGSN Routeing Update procedure.
I32 cgprsGtpDroppedPktsMonTime	1.3.6.1.4.1.9.10.48.1.1.1.8	Integer32	read-write	The time duration for monitoring the excessive rate at which packets are dropped by the GSN due to unknown GTP header problem.
T/F cgprsGtpNoRespToEchoNotifEnable	1.3.6.1.4.1.9.10.48.1.1.1.9	TruthValue	read-write	The object indicates whether the system produces the cgprsGtpGSNEchoFailedNotif. A false value will prevent the cgprsGtpGSNEchoFailedNotif from being generated by this system.
T/F cgprsGtpPDPCxtActRejNotifEnable	1.3.6.1.4.1.9.10.48.1.1.1.10	TruthValue	read-write	The object indicates whether the system produces the cgprsGtpPDPCxtActivationRejNotif.A false value will prevent the cgprsGtpPDPCxtActivationRejNotif from being generated by this system.
cgprsGtpGgsnConfig	1.3.6.1.4.1.9.10.48.1.1.2
INT cgprsGtpAPNAddrAllocMethodGlobDef	1.3.6.1.4.1.9.10.48.1.1.2.1	INTEGER	read-write	The global default value of APN address allocation method. Individual APN address allocation method configuration overrides global default value.
cgprsGtpChargingGWTable	1.3.6.1.4.1.9.10.48.1.1.2.2		not-accessible	Charging Gateway table. Charging information in GPRS is collected for each MS by SGSNs and GGSNs that are serving the MS. The information that the operator uses to generate the bill to a subscriber is operator-specific, such as usage of the radio interface, PDP addresses, duration of PDP context, usage of general GPRS resources, location of MS, traffic distination, usage of external data network and so on. Charging Gateways act as a storage buffer for real time Charging Data Record (CDR) collection. It provides the CDRs to the billing system. Charging Gateway Table lists all the charging gateways and their operational states. Backup charging gateway type is not allowed if there is no primary charging gateway type entry in the table. In addition, there is only one primary charging gateway entry.
cgprsGtpChargingGWEntry	1.3.6.1.4.1.9.10.48.1.1.2.2.1		not-accessible	Charging Gateway entry.
IP cgprsGtpChargingGWid	1.3.6.1.4.1.9.10.48.1.1.2.2.1.1	IpAddress	not-accessible	The IP address that is used to identify the unique charging gateway.
STR cgprsGtpChargingGWName	1.3.6.1.4.1.9.10.48.1.1.2.2.1.2	DisplayString	read-create	The name of the charging gateway.
INT cgprsGtpChargingGWType	1.3.6.1.4.1.9.10.48.1.1.2.2.1.3	INTEGER	read-create	The type of the charging gateway. The object can ge set to 'primary' if the gateway is a primary charging gateway. One primary charging gateway and one backup charging gateway are allowed for the system to work properly.
INT cgprsGtpChargingGWOperState	1.3.6.1.4.1.9.10.48.1.1.2.2.1.4	INTEGER	read-only	The operation state of the charging gateway. 'up' is when the charging gateway is up. 'down' is when the charging gateway is down. 'unknown' is when the charging gateway state can not be determined, such as during the time between it is configured and actual state is detected as functional.
T/F cgprsGtpChargingGWNotifEnable	1.3.6.1.4.1.9.10.48.1.1.2.2.1.5	TruthValue	read-create	The object indicates whether the system produces the cgprsGtpChargingGWNotif. A false value will prevent the cgprsGtpChargingGWUpDownNotif from being generated by this system.
ROW cgprsGtpChargingGWRowStatus	1.3.6.1.4.1.9.10.48.1.1.2.2.1.6	RowStatus	read-create	This object is used to create a new row or modify or delete an existing row in this table.
cgprsGtpAPNTable	1.3.6.1.4.1.9.10.48.1.1.2.3		not-accessible	The table of Access Point Name (APN). APN is the information relayed by the SGSN to the GGSN, that is used by the GGSN to differentiate between accesses to different external packet data networks using the same PDP type. APN is uniquely identified by its name.
cgprsGtpAPNEntry	1.3.6.1.4.1.9.10.48.1.1.2.3.1		not-accessible	APN entry that contains APN name and method of ip address allocation. Ip address for a MS can be allocated from external DHCP server, or local ip address pool, or static, depends on configuration.
I32 cgprsGtpAPNId	1.3.6.1.4.1.9.10.48.1.1.2.3.1.1	Integer32	not-accessible	APN index.
STR cgprsGtpAPNName	1.3.6.1.4.1.9.10.48.1.1.2.3.1.2	DisplayString	read-create	APN name.
INT cgprsGtpAPNAddrAllocMethod	1.3.6.1.4.1.9.10.48.1.1.2.3.1.3	INTEGER	read-create	APN ip address allocation method. Default is to use global default setting.
ROW cgprsGtpAPNRowStatus	1.3.6.1.4.1.9.10.48.1.1.2.3.1.4	RowStatus	read-create	This object is used to create a new row or modify or delete an existing row in this table.
ciscoGprsGtpStats	1.3.6.1.4.1.9.10.48.1.2
cgprsGtpGeneralStats	1.3.6.1.4.1.9.10.48.1.2.1
G32 cgprsGtpCurRxPacketQueueSize	1.3.6.1.4.1.9.10.48.1.2.1.1	Gauge32	read-only	The current size of the Rx Packet Queue on the GSN node (for data received from the APN, on the Gi interface).
G32 cgprsGtpCurActivatedPDPCxtsCnt	1.3.6.1.4.1.9.10.48.1.2.1.2	Gauge32	read-only	The current number of PDP contexts established on the GSN node.
C32 cgprsGtpCurUnexpRxGpduCnt	1.3.6.1.4.1.9.10.48.1.2.1.3	Counter32	read-only	The total number of G-PDUs received from a SGSN for a non-existing or an inactive PDP context since system startup.
C32 cgprsGtpCurRejPDPCxtActivationCnt	1.3.6.1.4.1.9.10.48.1.2.1.4	Counter32	read-only	The total number of Rejected PDP Context activation, due to an overload or other abnormal conditions since system startup.
C32 cgprsGtpTotalPktsDropped	1.3.6.1.4.1.9.10.48.1.2.1.5	Counter32	read-only	Total number of packets dropped due to unknown GTP header, since system is up.
I32 cgprsGtpDroppedPktsTimeFrame	1.3.6.1.4.1.9.10.48.1.2.1.6	Integer32	read-only	The time frame within which the number GTP packets, defined by cgprsGtpDroppedPktsCnt, are dropped.
C32 cgprsGtpDroppedPktsCnt	1.3.6.1.4.1.9.10.48.1.2.1.7	Counter32	read-only	The number of packets dropped by GTPwithin cgprsGtpDroppedPktsTimeFrame.
G32 cgprsGtpCurMTForPremiumQos	1.3.6.1.4.1.9.10.48.1.2.1.8	Gauge32	read-only	The mean throughput for premium class QOS users on the GSN.
G32 cgprsGtpCurMTForNormalQos	1.3.6.1.4.1.9.10.48.1.2.1.9	Gauge32	read-only	The mean throughput for normal class QOS users on the GSN.
G32 cgprsGtpCurMTForBestEffortQos	1.3.6.1.4.1.9.10.48.1.2.1.10	Gauge32	read-only	The mean throughput for a 'best effort' class QOS users on the GSN.
G32 cgprsGtpCurGSNBandwidthResrcUsed	1.3.6.1.4.1.9.10.48.1.2.1.11	Gauge32	read-only	The current amount of bandwidth resource used on the GSN. The current amount of bandwidth resource available on GSN can be obtained by deducting the value of this object from the value of the object cgprsGtpGSNTotalBandwidthResrc.
cgprsGtpGSNTable	1.3.6.1.4.1.9.10.48.1.2.1.12		not-accessible	GSN peer table. The SGSN-GGSN peer relationship is established as following: o A table in DNS listing the APN and corresponding ip address of GGSN. o When Mobile System (MS) wants service, it sends packets to a SGSN with specific APN. o SGSN asks DNS for ip address of a GGSN that service this APN. o DHCP returns a GGSN. o SGSN requires a path to the GGSN using GTP protocol. o The SGSN and GGSN peer maintains path by sending echo request message to each other. If one side fails in echo reply for certain times, the other side will send a trap to NMS. Note: o Multiple-Multiple peer relationship, i.e. a SGSN have multiple GGSN as peers, while a GGSN have multiple SGSN peers, depending on routing path. o Path is kept in database.
cgprsGtpGSNEntry	1.3.6.1.4.1.9.10.48.1.2.1.12.1		not-accessible	GSN entry. The entry is created when a path between a GGSN and SGSN is setup and the end point of the path (either GGSN or SGSN) is not listed in the GSN peer table yet. The entry is deleted when the path is released, or echo test message on the path times out after certain retry number defined as cgprsGtpN3Request.
IP cgprsGtpGSNid	1.3.6.1.4.1.9.10.48.1.2.1.12.1.1	IpAddress	not-accessible	Ip address that uniquely identify a GSN node.
C32 cgprsGtpGSNEchoFailedNotifCnt	1.3.6.1.4.1.9.10.48.1.2.1.12.1.2	Counter32	read-only	The echo test failure count before the entry is deleted.
cgprsGtpGgsnStats	1.3.6.1.4.1.9.10.48.1.2.2
G32 cgprsGtpTotalNumAllocIpAddr	1.3.6.1.4.1.9.10.48.1.2.2.1	Gauge32	read-only	The current number of total allocated ip addresses on the GGSN.
G32 cgprsGtpChargingMsgCnt	1.3.6.1.4.1.9.10.48.1.2.2.2	Gauge32	read-only	The current number of total charging messages in the queue.
cgprsGtpNumAllocIpAddrTable	1.3.6.1.4.1.9.10.48.1.2.2.3		not-accessible	The table for currently allocated number of dynamic addreses , associated with a given APN.
cgprsGtpNumAllocIpAddrEntry	1.3.6.1.4.1.9.10.48.1.2.2.3.1		not-accessible	The entry is created when a new APN is created. The entry is deleted when the associated APN is deleted.
G32 cgprsGtpNumAllocIpAddr	1.3.6.1.4.1.9.10.48.1.2.2.3.1.1	Gauge32	read-only	Number of ip addresses allocated for the specified APN (as identified by cgprsGtpAPNId).
cgprsGtpGgsnStatus	1.3.6.1.4.1.9.10.48.1.2.3
STR cgprsGtpVersion	1.3.6.1.4.1.9.10.48.1.2.3.1	DisplayString	read-only	The gtp version supported.
STR cgprsGtpLastGSNidNoRespToEcho	1.3.6.1.4.1.9.10.48.1.2.3.2	DisplayString	read-only	The name of the last peer GSN that does not reply to echo message.
STR cgprsGtpLastGSNidRecovered	1.3.6.1.4.1.9.10.48.1.2.3.3	DisplayString	read-only	The name of the last peer GSN that does not reply to echo message.
STR cgprsGtpGSNidOfLastUnexpPDPCxt	1.3.6.1.4.1.9.10.48.1.2.3.4	DisplayString	read-only	The name of the peer GSN whose PDP context is unexpected.
STR cgprsGtpTIDOfLastUnexpPDPCxt	1.3.6.1.4.1.9.10.48.1.2.3.5	DisplayString	read-only	The TID of the last unexpected PDP Context activation.
STR cgprsGtpRejReasonOfLastUnexpPDPCxt	1.3.6.1.4.1.9.10.48.1.2.3.6	DisplayString	read-only	The reason for rejecting the PDP Context activation.
ciscoGprsGtpNotifPrefix	1.3.6.1.4.1.9.10.48.2
ciscoGprsGtpNotifs	1.3.6.1.4.1.9.10.48.2.0
NTF cgprsGtpGSNPathFailedNotif	1.3.6.1.4.1.9.10.48.2.0.1			The notification is sent when the GSN peer is failed to respond to the GTP 'Echo Request' message for cgprsGtpN3Request times and before the GSN entry is deleted from the GSN peer table.
NTF cgprsGtpGSNPathRecoveredNotif	1.3.6.1.4.1.9.10.48.2.0.2			The notification is sent when the GSN peer is recovered from failure.
NTF cgprsGtpPDPCxtActivationRejNotif	1.3.6.1.4.1.9.10.48.2.0.3			This trap indicates that a PDP Context activation was rejected due to an overload, or some other abnormal condition. The trap indicates the Id of the GSN that rejected the PDP Context Activation, the IMSI Id of the MS, and the reson for rejection.
NTF cgprsGtpPrimaryChargingGWUpNotif	1.3.6.1.4.1.9.10.48.2.0.4			This notification is sent when primary charging gateway is up.
NTF cgprsGtpPrimaryChargingGWDownNotif	1.3.6.1.4.1.9.10.48.2.0.5			This notification is sent when primary charging gateway is down.
NTF cgprsGtpSecondaryChargingGWUpNotif	1.3.6.1.4.1.9.10.48.2.0.6			This notification is sent when secondary charging gateway is up.
NTF cgprsGtpSecondaryChargingGWDownNotif	1.3.6.1.4.1.9.10.48.2.0.7			This notification is sent when secondary charging gateway is down.
ciscoGprsGtpConformances	1.3.6.1.4.1.9.10.48.3
cgprsGtpCompliances	1.3.6.1.4.1.9.10.48.3.1
cgprsGtpCompliance	1.3.6.1.4.1.9.10.48.3.1.1			The compliance statement for entities which implement the CISCO GPRS GTP MIB.
cgprsGtpGroups	1.3.6.1.4.1.9.10.48.3.2
cgprsGtpGeneralConfigGroup	1.3.6.1.4.1.9.10.48.3.2.1			A collection of configurable GTP parameters for GGSN and SGSN.
cgprsGtpGgsnConfigGroup	1.3.6.1.4.1.9.10.48.3.2.2			A collection of configurable GTP parameters on GGSN.
cgprsGtpGeneralStatsGroup	1.3.6.1.4.1.9.10.48.3.2.3			A collection of stats for GTP on GGSN and SGSN.
cgprsGtpGgsnStatsGroup	1.3.6.1.4.1.9.10.48.3.2.4			A collection of statistics for GTP on GGSN.
cgprsGtpGgsnStatusGroup	1.3.6.1.4.1.9.10.48.3.2.5			A collection of status for GTP on GGSN.
cgprsGtpGgsnNotifGroup	1.3.6.1.4.1.9.10.48.3.2.6			A collection of notifications on GGSN.

RFC description

Provides management objects for monitoring GPRS Tunneling Protocol (GTP) tunnels, paths, and statistics on Cisco GGSN/SGSN platforms.

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Download CISCO-GPRS-GTP-MIB

What Is CISCO-GPRS-GTP-MIB?

Supported Devices

Monitoring Examples

What Can Be Monitored

This MIB depends on

Related MIBs

RFC description