CISCO-SEU-MITIGATION-MIB

CISCO-SEU-MITIGATION-MIB Download

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This MIB reports the status of non-automatic and automatic, rate-adaptive Single Event Upset (SEU) mitigation algorithms and adjusts their parameters, as well as reports the effects of those mitigations on memories, caches, and registers. SEU mitigation allows Cisco IOS to run on radiation tolerant hardware deployed in a geosynchronous Earth orbit satellites for IP communications. One of the challenges in deploying equipment in such an environment is the impact that radiation has on digital circuits. A Single Event Upset (SEU) occurs when the hardware is exposed to energetic ions and protons in the space environment. The value stored in a bit of information can change when a large enough charge is deposited on the digital circuit. This leads to adverse effects in the operation of the software; in this case Cisco IOS. While steps have been taken to reduce the occurrence of SEUs through the use of radiation tolerant hardware, these steps do not eliminate the threat. A critical requirement in running IOS on such platforms is the utilization of SEU mitigation strategies to reduce the impact of such events on the operation of the Cisco device.

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OID list for CISCO-SEU-MITIGATION-MIB

csmScrubTable
This table provides the configuration settings for the scrub algorithms. All entries are added with the SEU subsystem is initialized.
csmScrubEntry
This object represents an entry in the csmScrubConfigTable.
csmScrubIndex
This object uniquely identifies the csmScrubEntry.
csmScrubEntPhysicalIndex
This object represents the EntityPhysicalIndex (from the ENTITY-MIB) corresponding to the physical entity upon which the scrub or SEU-mitigation is being performed.
csmScrubScrubName
This object represents the name of the particular scrub or SEU algorithm, such as Memory Scrub, Register Scrub, etc.
csmScrubRateAdaptive
This object indicates whether the scrub or SEU algorithm is rate-adaptive. The values provided by objects csmScrubDeltaInterval, csmScrubRetryInterval, and csmScrubThresholdInterval are only applicable when this object is set to 'true'. true : Algorithm ...
csmScrubAlgorithmEnabled
This object indicates whether the SEU algorithm is enabled. true : Algorithm is enabled false : Algorithm is disabled
csmScrubRunInterval
This object represents the amount of wait time between when a scrub algorithm finishes its current run and begins its next run.
csmScrubRunIntervalUnits
This object represents the units for csmScrubRunInterval.
csmScrubDeltaInterval
This object represents the amount of time that a rate-adaptive scrub algorithm increases or decreases the csmScrubRunInterval. The scrub interval is decreased when an error interrupt occurs and the cScrubThresholdIntervalCount is exceeded. The scrub inter ...
csmScrubDeltaIntervalUnits
This object represents the units for csmScrubDeltaInterval.
csmScrubRetryInterval
This object represents the amount of time a rate-adaptive scrub algorithm waits before increasing the csmScrubRunInterval.
csmScrubRetryIntervalUnits
This object represents the units for csmScrubConfigRetryInterval.
csmScrubCurrentInterval
This object represents the current interval between which scrubs or SEU-mitigation runs. A value of 0 (zero) indicates that the scrubs or runs are back-to-back.
csmScrubCurrentIntervalUnits
This object represents the units for csmScrubCurrentInterval.
csmScrubThresholdInterval
This object represents the period of time that a rate-adaptive scrub algorithm will check for csmScrubThresholdErrorValue being exceeded. If the threshold is exceeded within this sliding time window, the scrub rate will increase.
csmScrubThresholdIntervalUnits
This object indicates the units for csmScrubConfigThresholdInterval.
csmScrubThresholdIntervalCount
This object represents the number of error interrupts received before a rate-adaptive scrub or SEU-mitigation algorithm decreases the scrub interval.
csmScrubThresholdErrorValue
This object represents the error threshold above which, when it occurs during sliding window (csmScrubThresholdInterval), the scrub or SEU-mitigation rate will increase.
csmScrubRunning
This object indicates whether the scrub or SEU algorithm is running or not. true : Algorithm is running. false : Algorithm is NOT running.
csmScrubStatus
This object indicates whether an adaptive scrub or SEU algorithm is performing scrubs more frequently (elevated) due most likely to more frequent SEUs or decreased due to less frequent SEUs, or at a normal rate.
csmScrubLastRun
This object represents the date and time a scrub or SEU-mitigation algorithm last ran.
csmScrubPassesCompleted
This object represents the total number of scrub or SEU-mitigations runs since the last 'clear SEU counters' CLI (command line interace) command was issued.
csmScrubErrorsTable
This table lists the errors and counts for the errors that the scrub algorithms are mitigating. All entries are added with the SEU subsystem is initialized.
csmScrubErrorsEntry
This object represents an entry in the csmScrubErrorsTable.
csmScrubErrorsIndex
This object uniquely identifies the csmScrubEntry.
csmScrubErrorsEntPhysicalIndex
This object is represents the EntityPhysicalIndex (from the ENTITY-MIB) corresponding to the physical entity upon which the scrub or SEU-mitigation is being performed.
csmScrubErrorsDescription
This object represents the error name and may include things such as DDR memory errors, cache errors, register errors, and other processor-specific register errors.
csmScrubErrorsReference
This object provides a reference to a User's Manual entry, if one exists, for processor and other device-specific errors.
csmScrubErrorsSingleBit
This object counts the single-bit errors for the specific error type described by csmScrubErrorsDescription.
csmScrubErrorsSingleBitInterrupts
This object counts number of interrupts thrown, if any, for single-bit errors that occurred for the specific error type described by csmScrubErrorsDescription.
csmScrubErrorsMultibit
This object counts the multi-bit errors for the specific error type described by csmScrubErrorsDescription.
csmScrubErrorsMultibitInterrupts
This object counts number of interrupts thrown, if any, for multiple-bit errors that occurred for the specific error type described by csmScrubErrorsDescription.
csmSeuEventLogMaxEntries
This object represents the maximum number of entries in the csmSeuEventLogTable.
csmSeuEventLogTable
This table lists any special error and scrub or SEU-mitigation algorithm events that may have occurred and is limited to csmSeuEventLogMaxEntries. All entries are added with the SEU subsystem is initialized.
csmSeuEventLogEntry
This object represents an entry in the csmSeuEventLogTable.
csmSeuEventLogIndex
This object uniquely identifies the csmScrubEventLogEntry.
csmSeuEventLogDescription
This object describes the event of interest.
csmSeuEventLogReference
This object provides a reference to a User's Manual entry, if one exists, that describes and provides more detail for the event of interest.
csmSeuEventLogAddress
This object provides the hexadecimal address (if one exists) associated with the event that occurred.
csmSeuEventLogTimeStamp
This object provides a date-and-time-stamp for the event that occurred.
ciscoSeuMitigationMIBMainObjectGroup
This is the list of objects that are required for an agent to support the CISCO-SEU-MITIGATION-MIB.

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