CISCO-ITP-MSU-RATES-MIB

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Organization: Cisco Systems, Inc.

Last Updated: 2007-02-01

Category: Cisco Devices, SNA and Legacy Protocols

Description: Manages ITP Message Signal Unit rate statistics including throughput and congestion metrics.

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What Is CISCO-ITP-MSU-RATES-MIB?

CISCO-ITP-MSU-RATES-MIB is a Cisco enterprise MIB for the Cisco IP Transfer Point (ITP), tracking the rate of MTP3 Message Signal Units (MSUs) transmitted and received per processor, used for SS7 traffic capacity planning. It exposes per-processor MSU rate tables along with configurable acceptable, warning, and overload thresholds and notification controls. This MIB is a software performance and congestion-monitoring tool: since higher-level SS7 transactions may require several MSUs each, tracking MSU rate against configured thresholds lets operators detect processor-level signaling congestion or overload conditions before service is impacted. It builds on the same ITU Q-series SS7 measurement framework referenced by other Cisco ITP MIBs (MTP3, TCAP, signaling point). It is deployed in telecom carrier networks on Cisco ITP nodes where per-processor signaling load must be tracked to avoid overload of SS7 signaling capacity. Engineers can download the CISCO-ITP-MSU-RATES-MIB file directly to load it into their MIB browser.

IPNetwork Monitor allows you to monitor SNMP objects defined in CISCO-ITP-MSU-RATES-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 IP Transfer Point (ITP)
SS7 signaling gateway/telecom carrier router

Monitoring Examples

An administrator would poll cimrMsuProcTable/cimrMsuProcEntry, indexed by cimrMsuProcIndex and cimrMsuProcPhysicalIndex, comparing the live MSU rate against cimrMsuProcAcceptableThreshold and cimrMsuProcWarningThreshold for that processor. If the rate exceeds cimrMsuRateOverloadedThreshold, a cimrMsuRateNotifyEnable trap firing within cimrMsuRateNotifyInterval alerts the operator to processor-level SS7 overload. Sustained readings near the warning threshold on one processor while others stay low would suggest uneven MSU load balancing that needs traffic redistribution.

What Can Be Monitored

per-processor MSU send/receive rate
acceptable/warning/overload thresholds
MSU rate sample interval
overload notification status

Imported Objects

From CISCO-SMI

ciscoMgmt

OBJECT-IDENTITY

From CISCO-TC

EntPhysicalIndexOrZero

From SNMPv2-CONF

MODULE-COMPLIANCE
NOTIFICATION-GROUP
OBJECT-GROUP

From SNMPv2-SMI

Counter32
Gauge32
Integer32
MODULE-IDENTITY
NOTIFICATION-TYPE
OBJECT-TYPE
Unsigned32

From SNMPv2-TC

TEXTUAL-CONVENTION
TimeStamp
TruthValue

How to Use in IPNetwork Monitor

Example using cimrMsuTrafficMSUs OID:

Select a Cisco IP Transfer Point (ITP) SS7 signaling gateway (legacy) as the target host to create a monitor — the SNMP service should be up and running on it. Click New Monitor, then check SNMP Custom on the Favorites tab, click Next, and confirm the host. On the next page, click Select... to open the built-in SNMP MIB Browser and type cimrMsuTrafficMSUs into the Find box to locate it in the OID tree, selecting the specific row/instance you want to monitor since this is a table column, then select it and click OK. The total number of MSU handled by this processor. On the monitor's Main parameters page you can set the target's SNMP port (default 161), credentials, polling interval, and other settings — see the SNMP Monitor help for details. On the State conditions and Alerting tabs, configure when the monitor should change state and trigger an alert; since this is a Counter32-type OID, Value bounds is the most useful condition here — trigger an alert if the counter increases sharply between polls relative to its normal baseline, since an unexpected spike often reflects a real change in traffic or activity. Click Finish to create the monitor; you can adjust any parameter later.

OIDs

OID symbolic	OID numeric	Type	Access	Description
ciscoItpMsuRatesMIB	1.3.6.1.4.1.9.9.529			This MIB provides information used to manage the number of MTP3 MSUs transmitted and received per processor. Many of the higher level protocols require several MSUs per transaction. Traffic capacity planning is based on MSUs not transactions. This MIB will provide information to determine current traffic. The Cisco IP Transfer Point (ITP) is a hardware and software solution that transports SS7 traffic using IP. Each ITP node provides function similar to SS7 signalling point. The relevant ITU documents describing this technology is the ITU Q series, including ITU Q.700: Introduction to CCITT Signalling System No. 7 and ITU Q.701 Functional description of the message transfer part (MTP) of Signalling System No. 7.
ciscoItpMsuRatesMIBNotifs	1.3.6.1.4.1.9.9.529.0
NTF ciscoItpMsuRateState	1.3.6.1.4.1.9.9.529.0.1			This notification is generated once for the interval specified by the cimrMsuRateNotifyInterval object when the cimrMsuTrafficRateState object has the following state transitions. 'acceptable' -> 'warning' 'acceptable' -> 'overloaded' 'warning' -> 'overloaded' At the end of the interval specified by the cimrMsuRateNotifyInterval object another notification will be generated if the current state is different from state sent in last notification even if the state transition is not one of the above transitions. When the cimrMsuRateNotifyInterval is set to zero all state changes will generate notifications.
ciscoItpMsuRatesMIBObjects	1.3.6.1.4.1.9.9.529.1
cimrScalars	1.3.6.1.4.1.9.9.529.1.1
U32 cimrMsuRateSampleInterval	1.3.6.1.4.1.9.9.529.1.1.4	Unsigned32	read-write	The length of the interval used to calculate MSU rate.
U32 cimrMsuRateNotifyInterval	1.3.6.1.4.1.9.9.529.1.1.5	Unsigned32	read-write	The length of the interval used to suppress ciscoItpMsuRcvdRateState and ciscoItpMsuSentRateState notifications.
T/F cimrMsuRateNotifyEnable	1.3.6.1.4.1.9.9.529.1.1.6	TruthValue	read-write	The MSU rate notification truth value. This object controls the generation of ciscoItpMsuRcvdRateState and ciscoItpMsuSentRateState notifications. 'true' Indicates that the notification of MSU rates has been enabled. 'false' Indicates that the notification MSU rates has been disabled.
CIM cimrMsuRateAcceptableThreshold	1.3.6.1.4.1.9.9.529.1.1.7	CimrMsuThreshold	read-write	This object is used to establish a default value for all instances of the cimrMsuProcAcceptableThreshold object in the cimrMsuProcTable table. The value for this object must be less than the values specified by cimrMsuRateWarningThreshold and cimrMsuRateOverloadedThreshold objects. All changes to this threshold will take effect at the end of the current interval.
CIM cimrMsuRateWarningThreshold	1.3.6.1.4.1.9.9.529.1.1.8	CimrMsuThreshold	read-write	This object is used to establish a default value for all instances of the cimrMsuProcWarningThreshold object in the cimrMsuProcTable table. The value for this object must be less than the values specified by cimrMsuRateOverloadedThreshold and greater than cimrMsuRateAcceptableThreshold objects. All changes to this threshold will take effect at the end of the current interval.
CIM cimrMsuRateOverloadedThreshold	1.3.6.1.4.1.9.9.529.1.1.9	CimrMsuThreshold	read-write	This object is used to establish a default value for all instances of the cimrMsuProcOverloadedThreshold object in the cimrMsuProcTable table. The value for this object must be greater than the values specified by cimrMsuRateAcceptableThreshold and cimrMsuRateWarningThreshold objects. All changes to this threshold will take effect at the end of the current interval.
cimrTables	1.3.6.1.4.1.9.9.529.1.2
cimrMsuProcTable	1.3.6.1.4.1.9.9.529.1.2.1		not-accessible	This table provides information associated with each processor. Thresholds are provided to control the behavior of the following objects from the cimrMsuTrafficTable table. -- cimrMsuTrafficRateState -- cimrMsuTrafficRate -- cimrMsuTrafficSize -- cimrMsuProcDurWarning -- cimrMsuProcDurOverloaded Any changes to these thresholds will cause a reset of measurements which is indicated by cimrMsuProcReset and cimrMsuProcResetTimestamp objects. Notifications thresholds. In order to generate notifications when MSU rate switch states the customer must define traffic levels using the following objects. When the global objects contain non-zero values they will act as defaults to all entries in table. global: - cimrMsuRateAcceptableThreshold - cimrMsuRateWarningThreshold - cimrMsuRateOverloadedThreshold Per processor: - cimrMsuProcAcceptableThreshold - cimrMsuProcWarningThreshold - cimrMsuProcOverloadedThreshold The global thresholds only apply when all of the threshold objects at instance level are set to zero. Set operations against thresholds must be performed as single operation. Calculation of cimrMsuTrafficRateState object is performed in the following manner to only report significant changes in traffic. In order to switch to a higher state the traffic rate must equal or exceed the next higher threshold. For example when current state is acceptable the traffic must equal or exceed value specified by warning-threshold to obtain warning state. In order to switch to a lower state the traffic rate must be less than the next lower threshold. For example when current state is overloaded the traffic must drop below warning-threshold to obtain warning state. Example: Acceptable-Threshold = 2000 Warning-Threshold = 2500 Overloaded-Threshold = 3000 Sample Rate Old State New State ------ ---- ---------- ---------- 1 2000 Acceptable Acceptable 2 2500 Acceptable Warning 3 2200 Warning Warning 4 2000 Warning Acceptable 5 3000 Acceptable Overloaded 5 1000 Overloaded Acceptable
cimrMsuProcEntry	1.3.6.1.4.1.9.9.529.1.2.1.1		not-accessible	Each entry represents a processor and is updated at end of interval specified by the cimrMsuRateSampleInterval object.
U32 cimrMsuProcIndex	1.3.6.1.4.1.9.9.529.1.2.1.1.1	Unsigned32	not-accessible	An index that uniquely represents a processor. This index is assigned arbitrarily by the engine and is not saved over reboots.
ENT cimrMsuProcPhysicalIndex	1.3.6.1.4.1.9.9.529.1.2.1.1.2	EntPhysicalIndexOrZero	read-only	The entPhysicalIndex of the physical entity for which the MSU measurements in this entry are maintained. The exact type of this entity is described by its entPhysicalVendorType value.
CIM cimrMsuProcAcceptableThreshold	1.3.6.1.4.1.9.9.529.1.2.1.1.3	CimrMsuThreshold	read-write	This object is used to specify a level of traffic below which the traffic is considered to be acceptable. All changes to this threshold will take effect at the end of the current interval. The value for this object must be less than the values specified by cimrMsuProcWarningThreshold and cimrMsuProcOverloadedThreshold objects.
CIM cimrMsuProcWarningThreshold	1.3.6.1.4.1.9.9.529.1.2.1.1.4	CimrMsuThreshold	read-write	This object is used to specify a level of traffic that indicates a rate that is above acceptable level, but is below level that impacts routing of MSUs. All changes to this threshold will take effect at the end of the current interval. The value for this object must be greater than the values specified by cimrMsuProcAcceptableThreshold and less than cimrMsuProcOverloadedThreshold objects.
CIM cimrMsuProcOverloadedThreshold	1.3.6.1.4.1.9.9.529.1.2.1.1.5	CimrMsuThreshold	read-write	This object is used to specify a level of traffic that indicates a rate that may impact routing of MSUs. All changes to this threshold will take effect at the end of the current interval. The value for this object must be greater than the value specified for cimrMsuProcAcceptableThreshold and cimrMsuProcWarningThreshold objects.
T/F cimrMsuProcReset	1.3.6.1.4.1.9.9.529.1.2.1.1.6	TruthValue	read-write	This object object always returns the 'false' value. Setting the object to 'true' resets the following objects. cimrMsuProcDurWarning cimrMsuProcDurOverloaded cimrMsuTrafficMaxRate cimrMsuTrafficMaxRateTimestamp cimrMsuDist000to009Seconds cimrMsuDist010to019Seconds cimrMsuDist020to029Seconds cimrMsuDist030to039Seconds cimrMsuDist040to049Seconds cimrMsuDist050to059Seconds cimrMsuDist060to069Seconds cimrMsuDist070to079Seconds cimrMsuDist080to089Seconds cimrMsuDist090orAbove In addition, the cimrMsuRateResetTimestamp is set to the current sysUpTime.
TIM cimrMsuProcResetTimestamp	1.3.6.1.4.1.9.9.529.1.2.1.1.7	TimeStamp	read-only	The value of sysUpTime when the measurements were reset by setting the cimrMsuProcReset object or by changing any of the following objects. cimrMsuRateSampleInterval cimrMsuRateAcceptableThreshold, cimrMsuRateWarningThreshold, cimrMsuRateOverloadedThreshold cimrMsuProcAcceptableThreshold cimrMsuProcWarningThreshold cimrMsuProcOverloadedThreshold This object will default to the time when instance was created.
I32 cimrMsuProcSlotNumber	1.3.6.1.4.1.9.9.529.1.2.1.1.8	Integer32	read-only	The number of slot contain processor and will be set to zero when platform does not support processsors in multiple slots.
I32 cimrMsuProcBayNumber	1.3.6.1.4.1.9.9.529.1.2.1.1.9	Integer32	read-only	The number of bay contain processor and will be set to zero when platform does not support processsors in multiple bays.
cimrMsuTrafficTable	1.3.6.1.4.1.9.9.529.1.2.2		not-accessible	This table provides information on the traffic in MUS for each processor in both directions. Any MSU in which a processor is involved will be counted. Here are some examples of how MSUs would be counted. Traditional SS7 Links: MSU is received on Line card 1 that supports SS7 link and MSU is routed directly to line card 2 that supports output link. Line card 1 processor information will be updated to indicate it received MSU and line card 2 processor information will be updated to indicate it sent MSU. IP/SCTP based SS7 Links: IP based SS7 Links can be terminated on linecard or owned by the main processor. When SS7 link is terminated on main processor only the main processor information will be updated. The line card processor that owns the IP interface will be involved but will not be included in measurements. When the SS7 link is terminated on line card its processor information will be updated. It is important to note that packets exchanged for SCTP associations are different from SS7 MSUs. More than one SS7 MSU can be transmitted in a single IP packet. Also, the SCTP association exchanges control packets that are not counted as SS7 MSUs.
cimrMsuTrafficEntry	1.3.6.1.4.1.9.9.529.1.2.2.1		not-accessible	Each entry represents a processor traffic in a particular direction and is updated at end of interval specified by the cimrMsuRateSampleInterval object.
CIR cimrMsuTrafficDirection	1.3.6.1.4.1.9.9.529.1.2.2.1.1	CirbhMsuTrafficDirection	not-accessible	The direction of traffic on a processor.
CIM cimrMsuTrafficRateState	1.3.6.1.4.1.9.9.529.1.2.2.1.2	CimrMsuRateState	read-only	The state of traffic load for a particular direction and is calculated using the following objects. - cimrMsuTrafficRcvdRate - cimrMsuRateAcceptableThreshold - cimrMsuRateWarningThreshold - cimrMsuRateOverloadedThreshold - cimrMsuTrafficAcceptableThreshold - cimrMsuTrafficWarningThreshold - cimrMsuTrafficOverloadedThreshold
G32 cimrMsuTrafficRate	1.3.6.1.4.1.9.9.529.1.2.2.1.3	Gauge32	read-only	Rate of MSUs over the interval specified by the cimrMsuRateSampleInterval object.
G32 cimrMsuTrafficSize	1.3.6.1.4.1.9.9.529.1.2.2.1.4	Gauge32	read-only	The average size of MSU over the interval specified by the cimrMsuRateSampleInterval object.
CIR cimrMsuTrafficDurWarning	1.3.6.1.4.1.9.9.529.1.2.2.1.5	CirbhMsuCurrentCount	read-only	The number of seconds the cimrMsuTrafficRateState was in the 'warning' state.
CIR cimrMsuTrafficDurOverloaded	1.3.6.1.4.1.9.9.529.1.2.2.1.6	CirbhMsuCurrentCount	read-only	The number of seconds the cimrMsuTrafficRateState was in the 'overloaded' state.
G32 cimrMsuTrafficMaxRate	1.3.6.1.4.1.9.9.529.1.2.2.1.7	Gauge32	read-only	Maximum value for the cimrMsuTrafficRate object since Setting this object to zero will clear the cimrMsuTrafficMaxTimestamp until the need next interval information is collected.
TIM cimrMsuTrafficMaxTimestamp	1.3.6.1.4.1.9.9.529.1.2.2.1.8	TimeStamp	read-only	Time and date when cimrMsuTrafficMaxRate was last set or zero when object was cleared.
C32 cimrMsuTrafficMSUsEx	1.3.6.1.4.1.9.9.529.1.2.2.1.9	Counter32	read-only	The total number of MSU handled by this processor.
cimrMsuDistTable	1.3.6.1.4.1.9.9.529.1.2.3		not-accessible	This table provides distribution of MSU rates per processor in both the transmit and receive directions. The MSU rates are converted into percentages by the current overloaded-threshold by the following formula: (MSU-Rate * 100)/overloaded-threshold Any value over 100 is placed in 90 to 100 range. Any changes to the following thresholds or setting cimrMsuProcReset object to 'true' will cause information in table to be reset. global: - cimrMsuRateAcceptableThreshold - cimrMsuRateWarningThreshold - cimrMsuRateOverloadedThreshold Per processor: - cimrMsuProcAcceptableThreshold - cimrMsuProcWarningThreshold - cimrMsuProcOverloadedThreshold In order for this table to contain data either the cimrMsuRateOverloadedThreshold or cimrMsuProcOverloadedThreshold must be set to non-zero value. If both objects are zero then data is not collected for this table.
cimrMsuDistEntry	1.3.6.1.4.1.9.9.529.1.2.3.1		not-accessible	Each entry represents a processor and is updated at end of interval specified by the cimrMsuRateSampleInterval object.
CIR cimrMsuDist000to009Seconds	1.3.6.1.4.1.9.9.529.1.2.3.1.1	CirbhMsuCurrentCount	read-only	The total number of seconds during which the MSU rate for this processor was from 0 to 9 percent of the current overloaded-threshold value.
CIR cimrMsuDist010to019Seconds	1.3.6.1.4.1.9.9.529.1.2.3.1.2	CirbhMsuCurrentCount	read-only	The total number of seconds during which the MSU rate for this processor was from 10 to 19 percent of the current overloaded-threshold value.
CIR cimrMsuDist020to029Seconds	1.3.6.1.4.1.9.9.529.1.2.3.1.3	CirbhMsuCurrentCount	read-only	The total number of seconds during which the MSU rate for this processor was from 20 to 29 percent of the current overloaded-threshold value.
CIR cimrMsuDist030to039Seconds	1.3.6.1.4.1.9.9.529.1.2.3.1.4	CirbhMsuCurrentCount	read-only	The total number of seconds during which the MSU rate for this processor was from 30 to 39 percent of the current overloaded-threshold value.
CIR cimrMsuDist040to049Seconds	1.3.6.1.4.1.9.9.529.1.2.3.1.5	CirbhMsuCurrentCount	read-only	The total number of seconds during which the MSU rate for this processor was from 40 to 49 percent of the current overloaded-threshold value.
CIR cimrMsuDist050to059Seconds	1.3.6.1.4.1.9.9.529.1.2.3.1.6	CirbhMsuCurrentCount	read-only	The total number of seconds during which the MSU rate for this processor was from 50 to 59 percent of the current overloaded-threshold value.
CIR cimrMsuDist060to069Seconds	1.3.6.1.4.1.9.9.529.1.2.3.1.7	CirbhMsuCurrentCount	read-only	The total number of seconds during which the MSU rate for this processor was from 60 to 69 percent of the current overloaded-threshold value.
CIR cimrMsuDist070to079Seconds	1.3.6.1.4.1.9.9.529.1.2.3.1.8	CirbhMsuCurrentCount	read-only	The total number of seconds during which the MSU rate for this processor was from 70 to 79 percent of the current overloaded-threshold value.
CIR cimrMsuDist080to089Seconds	1.3.6.1.4.1.9.9.529.1.2.3.1.9	CirbhMsuCurrentCount	read-only	The total number of seconds during which the MSU rate for this processor was from 80 to 89 percent of the current overloaded-threshold value.
CIR cimrMsuDist090orAbove	1.3.6.1.4.1.9.9.529.1.2.3.1.10	CirbhMsuCurrentCount	read-only	The total number of seconds during which the MSU rate for this processor was above 90 percent of the current overloaded-threshold value.
ciscoItpMsuRatesMIBConform	1.3.6.1.4.1.9.9.529.2
ciscoItpMsuRatesMIBCompliances	1.3.6.1.4.1.9.9.529.2.1
ciscoItpMsuRatesMIBCompliance	1.3.6.1.4.1.9.9.529.2.1.1			The compliance statement for entities which implement the CISCO-ITP-MSU-RATES-MIB.my MIB
ciscoItpMsuRatesMIBCompliancesRev1	1.3.6.1.4.1.9.9.529.2.1.2			The compliance statement for entities which implement the CISCO-ITP-MSU-RATES-MIB.my MIB
ciscoItpMsuRatesMIBGroups	1.3.6.1.4.1.9.9.529.2.2
ciscoItpMsuRatesScalarsGroup	1.3.6.1.4.1.9.9.529.2.2.1			Objects used control collection MSU rates.
ciscoItpMsuRatesObjects	1.3.6.1.4.1.9.9.529.2.2.2			ITP MSU rates object group.
ciscoItpMsuDistObjects	1.3.6.1.4.1.9.9.529.2.2.3			ITP MSU distribution object group.
ciscoItpMsuRatesNotifyGroup	1.3.6.1.4.1.9.9.529.2.2.4			ITP MSU state notification group.
ciscoItpMsuRatesObjectsRev1	1.3.6.1.4.1.9.9.529.2.2.5			ITP total MSU handled by processor.

RFC description

Tracks MTP3 MSU transmission and reception rates per processor for SS7 IP transfer point traffic management.

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