CISCO-SCSI-FLOW-MIB

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Category: Cisco Devices, Fibre Channel and Storage

Description: Monitors SCSI I/O flow statistics including initiator/target traffic counters on Cisco MDS SAN platforms.

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What Is CISCO-SCSI-FLOW-MIB?

CISCO-SCSI-FLOW-MIB is a vendor-specific MIB for Cisco MDS storage-area-network (SAN) switch platforms, used to monitor SCSI I/O flow statistics between initiators and targets across Fibre Channel fabrics. It exposes a flow table keyed by a flow ID, with per-flow initiator/target WWNs, VSAN membership, LUN scope, and buffer/statistics-enablement settings. Its monitoring value lies in performance and software-state visibility: tracking whether flow statistics collection is enabled, how many buffers are allocated, and whether write-acceleration is applied, all of which affect SAN I/O performance and diagnostics. It relies on Cisco's VSAN and WWN addressing conventions native to MDS Fibre Channel switches and complements other Cisco storage MIBs. It is deployed specifically on Cisco MDS multilayer SAN directors and switches. Engineers can download the CISCO-SCSI-FLOW-MIB file directly to load it into their MIB browser.

IPNetwork Monitor allows you to monitor SNMP objects defined in CISCO-SCSI-FLOW-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 MDS SAN switches/directors

Monitoring Examples

An administrator would first read ciscoScsiFlowNextIndexAvail to obtain a free index, then create and poll a ciscoScsiFlowTable/ciscoScsiFlowEntry row via ciscoScsiFlowId to inspect ciscoScsiFlowIntrWwn, ciscoScsiFlowTargetWwn, and ciscoScsiFlowIntrVsan/ciscoScsiFlowTargetVsan for a specific initiator-target pair. Checking ciscoScsiFlowStatsEnabled and ciscoScsiFlowBufCount reveals whether flow-level statistics and write acceleration buffering are active for that flow, and ciscoScsiFlowWriteAcc shows if write acceleration is enabled, which is useful when diagnosing degraded SAN throughput on a specific initiator-target-VSAN combination.

What Can Be Monitored

SCSI flow initiator/target WWNs
VSAN membership per flow
write acceleration status
flow statistics enablement
buffer allocation count
LUN scope of flow

Imported Objects

From CISCO-SCSI-MIB

ScsiLUNOrZero

From CISCO-SMI

ciscoMgmt

OBJECT-IDENTITY

From CISCO-ST-TC

FcNameId
VsanIndex

From RFC-1212

OBJECT-TYPE

From RFC-1215

TRAP-TYPE

From RFC1155-SMI

Counter
Gauge

From SNMPv2-TC-v1

RowStatus
TruthValue

OIDs

OID symbolic	OID numeric	Type	Access	Description
CTR ciscoScsiFlowAbts	1.3.6.1.4.1.9.9.447.1.2.1.1.43	Counter	read-only	The number of ABTSs encountered on this LUN on this flow.
CTR ciscoScsiFlowAcaActiveStatuses	1.3.6.1.4.1.9.9.447.1.2.1.1.31	Counter	read-only	The number of ACA active statuses received on this LUN on this flow.
T/F ciscoScsiFlowAllLuns	1.3.6.1.4.1.9.9.447.1.1.2.1.6	TruthValue	read-write	If this object is set to 'true', it specifies that all the LUNs on the target are to be included in the flow.
GAU ciscoScsiFlowBufCount	1.3.6.1.4.1.9.9.447.1.1.2.1.8	Gauge	read-write	The value of this object is relevant only if the corresponding instance of ciscoScsiFlowWriteAcc has been set to 'true'. It specifies the number of buffers to be used for write-acceleration.
CTR ciscoScsiFlowBusyStatuses	1.3.6.1.4.1.9.9.447.1.2.1.1.28	Counter	read-only	The number of busy SCSI statuses received on this LUN on this flow.
CSF ciscoScsiFlowCfgReasonCode	1.3.6.1.4.1.9.9.447.1.1.6	CSFlowCfgReasonCode	not-accessible	This object indicates the feature configuration reason code to be included in notifications.
INT ciscoScsiFlowClearStats	1.3.6.1.4.1.9.9.447.1.1.2.1.10	INTEGER	read-write	This object assists in clearing the statistics for this flow. If this object is set to 'clear(1)', it results in all statistics for this flow being cleared. No action is taken if it is set to 'noop(2)'. The value of this object when read is always 'noop(2)'.
CSF ciscoScsiFlowDeviceType	1.3.6.1.4.1.9.9.447.1.1.4	CSFlowDeviceType	not-accessible	This object indicates whether the notification pertains to an initiator or target.
ciscoScsiFlowEntry	1.3.6.1.4.1.9.9.447.1.1.2.1		not-accessible	An entry, which is uniquely identified by the SCSI flow ID, contains the various attributes of a SCSI flow.
ciscoScsiFlowFeatureStatusGroup	1.3.6.1.4.1.9.9.447.2.2.5
ciscoScsiFlowGroup	1.3.6.1.4.1.9.9.447.2.2.1
GAU ciscoScsiFlowId	1.3.6.1.4.1.9.9.447.1.1.2.1.1	Gauge	not-accessible	This object represents the flow identifier.
ciscoScsiFlowInfoGroup	1.3.6.1.4.1.9.9.447.2.2.3
CTR ciscoScsiFlowInquirys	1.3.6.1.4.1.9.9.447.1.2.1.1.20	Counter	read-only	The number of SCSI Inquiry commands sent on this LUN on this flow.
CSF ciscoScsiFlowIntrLCStatus	1.3.6.1.4.1.9.9.447.1.1.2.1.13	CSFlowVerifyReasonCode	read-only	The status of the linecard where the SCSI Flow initiator device is located.
CSF ciscoScsiFlowIntrVrfStatus	1.3.6.1.4.1.9.9.447.1.1.2.1.11	CSFlowVerifyReasonCode	read-only	The verification status of the initiator device corresponding to the SCSI Flow.
VSA ciscoScsiFlowIntrVsan	1.3.6.1.4.1.9.9.447.1.1.2.1.4	VsanIndex	read-write	The VSAN ID of the initiator on which the flow is configured.
FCN ciscoScsiFlowIntrWwn	1.3.6.1.4.1.9.9.447.1.1.2.1.2	FcNameId	read-write	This object represents the pWWN of the Initiator in the flow. This object must be set to a valid value before or concurrently setting the corresponding instance of ciscoScsiFlowRowStatus object to 'active'.
SCS ciscoScsiFlowLunId	1.3.6.1.4.1.9.9.447.1.2.1.1.1	ScsiLUNOrZero	not-accessible	The LUN ID on this flow on which the statistics are gathered.
ciscoScsiFlowMIB	1.3.6.1.4.1.9.9.447
ciscoScsiFlowMIBCompliance	1.3.6.1.4.1.9.9.447.2.1.1
ciscoScsiFlowMIBCompliances	1.3.6.1.4.1.9.9.447.2.1
ciscoScsiFlowMIBConform	1.3.6.1.4.1.9.9.447.2
ciscoScsiFlowMIBGroups	1.3.6.1.4.1.9.9.447.2.2
ciscoScsiFlowMIBNotifs	1.3.6.1.4.1.9.9.447.0
ciscoScsiFlowMIBObjects	1.3.6.1.4.1.9.9.447.1
CTR ciscoScsiFlowModeSenses	1.3.6.1.4.1.9.9.447.1.2.1.1.22	Counter	read-only	The number of Mode Sense SCSI commands sent on this LUN on this flow.
GAU ciscoScsiFlowNextIndexAvail	1.3.6.1.4.1.9.9.447.1.1.1	Gauge	read-only	This object contains the next available value for the object ciscoScsiFlowId. If all values are exhausted, then this object will contain a 0 value. A management application should read this object, get the (non-zero) value and use same for creating an entry in the ciscoScsiFlowTable. If two network management applications read this object at the same time and try to create an entry in the ciscoScsiFlowTable, only one of them will succeed. The network management application which failed, will need to re-read this object and try the SET again.
ciscoScsiFlowNotifyGroup	1.3.6.1.4.1.9.9.447.2.2.4
GAU ciscoScsiFlowNum	1.3.6.1.4.1.9.9.447.1.1.3	Gauge	not-accessible	This object indicates the flow ID corresponding to which notifications need to be sent.
CTR ciscoScsiFlowRdBlocks	1.3.6.1.4.1.9.9.447.1.2.1.1.5	Counter	read-only	The total number of blocks that have been read on this LUN on this flow.
CTR ciscoScsiFlowRdCapacitys	1.3.6.1.4.1.9.9.447.1.2.1.1.21	Counter	read-only	The number of Read Capacity SCSI commands sent on this LUN on this flow.
CTR ciscoScsiFlowRdFailedIos	1.3.6.1.4.1.9.9.447.1.2.1.1.3	Counter	read-only	The total number of SCSI read operations that have failed on this LUN on this flow.
CTR ciscoScsiFlowRdIos	1.3.6.1.4.1.9.9.447.1.2.1.1.2	Counter	read-only	The total number of SCSI read operations on this LUN on this flow.
GAU ciscoScsiFlowRdMaxBlocks	1.3.6.1.4.1.9.9.447.1.2.1.1.6	Gauge	read-only	The maximum number of blocks read across all read operations on this LUN on this flow.
GAU ciscoScsiFlowRdMaxTime	1.3.6.1.4.1.9.9.447.1.2.1.1.8	Gauge	read-only	The maximum response time over all read operations on this LUN on this flow.
GAU ciscoScsiFlowRdMinTime	1.3.6.1.4.1.9.9.447.1.2.1.1.7	Gauge	read-only	The minimum response time over all read operations on this LUN on this flow.
GAU ciscoScsiFlowRdsActive	1.3.6.1.4.1.9.9.447.1.2.1.1.9	Gauge	read-only	The number of read operations that are currently active on this LUN on this flow.
CTR ciscoScsiFlowRdTimeouts	1.3.6.1.4.1.9.9.447.1.2.1.1.4	Counter	read-only	The total number of SCSI read operations that have timed out on this LUN on this flow.
CTR ciscoScsiFlowRepLuns	1.3.6.1.4.1.9.9.447.1.2.1.1.19	Counter	read-only	The number of Report LUN SCSI commands sent on this LUN on this flow.
CTR ciscoScsiFlowReqSenses	1.3.6.1.4.1.9.9.447.1.2.1.1.23	Counter	read-only	The number of Request Sense SCSI commands sent on LUN on this this flow.
ROW ciscoScsiFlowRowStatus	1.3.6.1.4.1.9.9.447.1.1.2.1.15	RowStatus	read-write	The status of this conceptual row. When creating an entry in this table, the management application MUST set values for the corresponding instances of ciscoScsiFlowIntrWwn and ciscoScsiFlowTargetWwn before or concurrently with setting this object to 'active'.
CTR ciscoScsiFlowRxFc2Frames	1.3.6.1.4.1.9.9.447.1.2.1.1.24	Counter	read-only	The total number of link-level FC frames received on this LUN on this flow.
CTR ciscoScsiFlowRxFc2Octets	1.3.6.1.4.1.9.9.447.1.2.1.1.26	Counter	read-only	The total number of octets received in link-level frames on this LUN on this flow.
CTR ciscoScsiFlowSenseKeyAbrtCmdErrs	1.3.6.1.4.1.9.9.447.1.2.1.1.40	Counter	read-only	The number of ABORTED COMMAND SCSI SENSE key errors received on this LUN on this flow.
CTR ciscoScsiFlowSenseKeyBlankErrs	1.3.6.1.4.1.9.9.447.1.2.1.1.38	Counter	read-only	The number of BLANK CHECK SCSI SENSE key errors received on this LUN on this flow.
CTR ciscoScsiFlowSenseKeyCpAbrtErrs	1.3.6.1.4.1.9.9.447.1.2.1.1.39	Counter	read-only	The number of COPY ABORTED SCSI SENSE key errors received on this LUN on this flow.
CTR ciscoScsiFlowSenseKeyDatProtErrs	1.3.6.1.4.1.9.9.447.1.2.1.1.37	Counter	read-only	The number of DATA PROTECT SCSI SENSE key errors received on this LUN on this flow.
CTR ciscoScsiFlowSenseKeyHwErrs	1.3.6.1.4.1.9.9.447.1.2.1.1.34	Counter	read-only	The number of HARDWARE ERROR SCSI SENSE key errors received on this LUN on this flow. This indicates that the target detected a non-recoverable hardware failure.
CTR ciscoScsiFlowSenseKeyIllReqErrs	1.3.6.1.4.1.9.9.447.1.2.1.1.35	Counter	read-only	The number of ILLEGAL REQUEST SCSI SENSE key errors received on this LUN on this flow.
CTR ciscoScsiFlowSenseKeyMedErrs	1.3.6.1.4.1.9.9.447.1.2.1.1.33	Counter	read-only	The number of MEDIUM ERROR SCSI SENSE key errors received on this LUN on this flow. This indicates that the command terminated with a non-recovered error condition possibly caused by a flaw in the medium.
CTR ciscoScsiFlowSenseKeyMiscmpErrs	1.3.6.1.4.1.9.9.447.1.2.1.1.42	Counter	read-only	The number of MISCOMPARE SCSI SENSE key errors received on this LUN on this flow.
CTR ciscoScsiFlowSenseKeyNotRdyErrs	1.3.6.1.4.1.9.9.447.1.2.1.1.32	Counter	read-only	The number of NOT READY SCSI SENSE key errors received on this LUN on this flow. This indicates that the logical unit being addressed cannot be accessed.
CTR ciscoScsiFlowSenseKeyUnitAttErrs	1.3.6.1.4.1.9.9.447.1.2.1.1.36	Counter	read-only	The number of UNIT ATTENTION SCSI SENSE key errors received on this LUN on this flow.
CTR ciscoScsiFlowSenseKeyVolFlowErrs	1.3.6.1.4.1.9.9.447.1.2.1.1.41	Counter	read-only	The number of VOLUME OVERFLOW SCSI SENSE key errors received on this LUN on this flow.
CSF ciscoScsiFlowStatsCfgStatus	1.3.6.1.4.1.9.9.447.1.3.2.1.1	CSFlowFeatureCfgReasonCode	read-only	The configuration status for statistics feature for this flow.
T/F ciscoScsiFlowStatsEnabled	1.3.6.1.4.1.9.9.447.1.1.2.1.9	TruthValue	read-write	This object specifies if the statistics gathering needs to be enabled for this flow. If it is set to 'true', then it is enabled. If it is set to 'false', then it is disabled.
ciscoScsiFlowStatsEntry	1.3.6.1.4.1.9.9.447.1.2.1.1		not-accessible	An entry (conceptual row) in this table. An entry contains the statistics related to a LUN on a flow.
ciscoScsiFlowStatsGroup	1.3.6.1.4.1.9.9.447.2.2.2
CSF ciscoScsiFlowStatsIntrCfgStatus	1.3.6.1.4.1.9.9.447.1.3.2.1.2	CSFlowCfgReasonCode	read-only	The initiator configuration status for statistics feature for this flow.
NTF ciscoScsiFlowStatsNotify	1.3.6.1.4.1.9.9.447.0.3			This notification is generated whenever statistics gathering is configured on a flow to indicate the outcome.
ciscoScsiFlowStatsStatusEntry	1.3.6.1.4.1.9.9.447.1.3.2.1		not-accessible	An entry (conceptual row) in this table. An entry contains the status for statistics feature of the flow.
ciscoScsiFlowStatsStatusTable	1.3.6.1.4.1.9.9.447.1.3.2		not-accessible	A table containing status for flows with statistics configured.
ciscoScsiFlowStatsTable	1.3.6.1.4.1.9.9.447.1.2.1		not-accessible	A table containing statistics related to SCSI flows on active LUNs. Counters in this table pertaining to a flow on a LUN will be populated if the corresponding statistics gathering object for that flow (ciscoScsiFlowStatsEnabled) is enabled and I/Os have been done to that LUN. The management application can cause entries to be created in this table by setting the appropriate instance of ciscoScsiFlowStatsEnabled object.
CSF ciscoScsiFlowStatsTgtCfgStatus	1.3.6.1.4.1.9.9.447.1.3.2.1.3	CSFlowCfgReasonCode	read-only	The target configuration status for statistics feature for this flow.
CTR ciscoScsiFlowStatusResvConfs	1.3.6.1.4.1.9.9.447.1.2.1.1.29	Counter	read-only	The number of reservation conflicts SCSI status received on this LUN on this flow.
ciscoScsiFlowTable	1.3.6.1.4.1.9.9.447.1.1.2		not-accessible	This table allows configuration of SCSI flows. The Initiator should be connected to a port on an Intelligent Line Card on the local switch. The Target device can be present anywhere in the network. The management application should create entries in this table for all SCSI flows it is interested in. This table contains all the SCSI flows configured on the local device. A SCSI flow is identified uniquely by a SCSI flow ID.
VSA ciscoScsiFlowTargetVsan	1.3.6.1.4.1.9.9.447.1.1.2.1.5	VsanIndex	read-write	The VSAN ID of the target on which the flow is configured.
FCN ciscoScsiFlowTargetWwn	1.3.6.1.4.1.9.9.447.1.1.2.1.3	FcNameId	read-write	This object represents the pWWN of the Target in the flow. This object must be set to a valid value before or concurrently setting the corresponding instance of ciscoScsiFlowRowStatus object to 'active'.
CTR ciscoScsiFlowTestUnitRdys	1.3.6.1.4.1.9.9.447.1.2.1.1.18	Counter	read-only	The number of test unit ready SCSI commands sent on this LUN on this flow.
CSF ciscoScsiFlowTgtLCStatus	1.3.6.1.4.1.9.9.447.1.1.2.1.14	CSFlowVerifyReasonCode	read-only	The status of the linecard where the SCSI Flow target device is located.
CSF ciscoScsiFlowTgtVrfStatus	1.3.6.1.4.1.9.9.447.1.1.2.1.12	CSFlowVerifyReasonCode	read-only	The verification status of the target device corresponding to the SCSI Flow.
CTR ciscoScsiFlowTskSetFulStatuses	1.3.6.1.4.1.9.9.447.1.2.1.1.30	Counter	read-only	The number of task set full SCSI statuses received on this LUN on this flow.
CTR ciscoScsiFlowTxFc2Frames	1.3.6.1.4.1.9.9.447.1.2.1.1.25	Counter	read-only	The total number of link-level frames transmitted on this LUN on this flow.
CTR ciscoScsiFlowTxFc2Octets	1.3.6.1.4.1.9.9.447.1.2.1.1.27	Counter	read-only	The total number of octets transmitted in link-level frames on this LUN on this flow.
NTF ciscoScsiFlowVerifyNotify	1.3.6.1.4.1.9.9.447.0.1			This notification is generated whenever a change occurs in the fabric causing a flow to be valid or invalid. The ciscoScsiFlowNum object specifies the flow and the ciscoScsiFlowVerifyReasonCode object specifies the actual reason.
CSF ciscoScsiFlowVerifyReasonCode	1.3.6.1.4.1.9.9.447.1.1.5	CSFlowVerifyReasonCode	not-accessible	This object indicates the verification reason code to be included in notifications.
CSF ciscoScsiFlowWrAccCfgStatus	1.3.6.1.4.1.9.9.447.1.3.1.1.1	CSFlowFeatureCfgReasonCode	read-only	The configuration status for write-acceleration feature for this flow.
CSF ciscoScsiFlowWrAccIntrCfgStatus	1.3.6.1.4.1.9.9.447.1.3.1.1.2	CSFlowCfgReasonCode	read-only	The initiator configuration status for write-acceleration feature for this flow.
NTF ciscoScsiFlowWrAccNotify	1.3.6.1.4.1.9.9.447.0.2			This notification is generated whenever write acceleration is configured on a flow to indicate the outcome.
ciscoScsiFlowWrAccStatusEntry	1.3.6.1.4.1.9.9.447.1.3.1.1		not-accessible	An entry (conceptual row) in this table. An entry contains the status for write-acceleration feature of the flow.
ciscoScsiFlowWrAccStatusTable	1.3.6.1.4.1.9.9.447.1.3.1		not-accessible	A table containing status for flows with write-acceleration configured.
CSF ciscoScsiFlowWrAccTgtCfgStatus	1.3.6.1.4.1.9.9.447.1.3.1.1.3	CSFlowCfgReasonCode	read-only	The target configuration status for write-acceleration feature for this flow.
CTR ciscoScsiFlowWrBlocks	1.3.6.1.4.1.9.9.447.1.2.1.1.13	Counter	read-only	The total number of blocks that have been written on this LUN on this flow.
CTR ciscoScsiFlowWrFailedIos	1.3.6.1.4.1.9.9.447.1.2.1.1.11	Counter	read-only	The total number of SCSI write operations that have failed on this LUN on this flow.
CTR ciscoScsiFlowWrIos	1.3.6.1.4.1.9.9.447.1.2.1.1.10	Counter	read-only	The total number of SCSI write operations on this LUN on this flow.
T/F ciscoScsiFlowWriteAcc	1.3.6.1.4.1.9.9.447.1.1.2.1.7	TruthValue	read-write	This object specifies if write-acceleration feature is enabled for this flow. If set to 'true' it is enabled. If set to 'false', it is disabled.
GAU ciscoScsiFlowWrMaxBlocks	1.3.6.1.4.1.9.9.447.1.2.1.1.14	Gauge	read-only	The maximum number of blocks written across all write operations on this LUN on this flow.
GAU ciscoScsiFlowWrMaxTime	1.3.6.1.4.1.9.9.447.1.2.1.1.16	Gauge	read-only	The maximum response time over all write operations on this LUN on this flow.
GAU ciscoScsiFlowWrMinTime	1.3.6.1.4.1.9.9.447.1.2.1.1.15	Gauge	read-only	The minimum response time over all write operations on this LUN on this flow.
GAU ciscoScsiFlowWrsActive	1.3.6.1.4.1.9.9.447.1.2.1.1.17	Gauge	read-only	The number of write operations that are currently active on this LUN on this flow.
CTR ciscoScsiFlowWrTimeouts	1.3.6.1.4.1.9.9.447.1.2.1.1.12	Counter	read-only	The total number of SCSI write operations that have timed out on this LUN on this flow.
csfConfiguration	1.3.6.1.4.1.9.9.447.1.1
csfFeatureStatus	1.3.6.1.4.1.9.9.447.1.3
csfStats	1.3.6.1.4.1.9.9.447.1.2

RFC description

Configures and monitors SCSI flows between initiators and targets in storage networks.

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Download CISCO-SCSI-FLOW-MIB

What Is CISCO-SCSI-FLOW-MIB?

Supported Devices

Monitoring Examples

What Can Be Monitored

This MIB depends on

Related MIBs

RFC description