INTEL-CSU-HW-MIB

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Category: Domain: Telco/Transport, Domain: WAN, Vendor: Intel

Description: Intel channel service unit (CSU) hardware MIB providing SNMP objects for T1/E1 CSU/DSU configuration and performance.

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What Is INTEL-CSU-HW-MIB?

INTEL-CSU-HW-MIB is an Intel vendor-specific MIB providing hardware-level statistics and configuration for Intel's CSU/DSU T1/E1 line interface, explicitly designed as a value-add layer on top of, and independent from, the standard DS1 MIB in RFC 1406. Its csuInfoTable exposes real-time line-health objects per interface — csuAlarm (red/blue/yellow/out-of-framing), csuReceiveLevel, csuLoopbackState, and counters such as csuLossofsynchronization, csuChangeofFrameAlignment, csuSeverelyErroredFramingEvent, csuB8ZSCodeWordDetect, csuFrameBitError, csuLineCodeViolationCount, csuCRC6errors, csuYellowAlarmCount, and csuAISDefects — alongside csuConfigTable objects (csuChannelBandwidth, csuLineBuildOut, csuLineCode, csuFramingFormat, csuTimingMode) and a csuFracTable tracking fractional T1 channel usage (csuFracInUse vs csuFracDetected). This makes it useful for monitoring T1/E1 CSU hardware health directly — an active csuAlarm value other than csuAlarmNone, a nonzero csuErrorsThisSecond, or a low csuPercentEFS would indicate a degrading or misconfigured T1 line. It depends on INTEL-GEN-MIB for its mib2ext registration point and is deployed alongside the standard DS1 MIB on Intel CSU/DSU hardware terminating leased T1/E1 circuits, and administrators can download the INTEL-CSU-HW-MIB file to load it into their MIB browser.

IPNetwork Monitor allows you to monitor SNMP objects defined in INTEL-CSU-HW-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

Intel CSU/DSU T1/E1 hardware modules

Monitoring Examples

An operator polls csuInfoTable's csuAlarm and csuPercentEFS per line interface to catch a T1 circuit degrading, then checks csuLineCodeViolationCount and csuCRC6errors for rising error trends; a csuAlarm value of csuAlarmRED combined with a dropping csuPercentEFS would point to a broken or unplugged T1 cable.

What Can Be Monitored

CSU alarm state (red/blue/yellow/out-of-framing)
receive signal level and loopback state
frame/line/path code violation counters
CRC6 error and AIS defect counters
T1 channel bandwidth/line-code/framing configuration
fractional T1 channel in-use vs detected status

Imported Objects

From INTEL-GEN-MIB

mib2ext

OBJECT-IDENTITY

From RFC-1212

OBJECT-TYPE

From RFC1155-SMI

Counter
enterprises
private

From RFC1213-MIB

DisplayString

OIDs

OID symbolic	OID numeric	Type	Access	Description
csudsu	1.3.6.1.4.1.343.6.36
csu	1.3.6.1.4.1.343.6.36.1
csuInfoTable	1.3.6.1.4.1.343.6.36.1.1		not-accessible	The CSU Information table.
csuInfoEntry	1.3.6.1.4.1.343.6.36.1.1.1		not-accessible	An entry in the CSU Information table.
INT csuInfoLineIndex	1.3.6.1.4.1.343.6.36.1.1.1.1	INTEGER	read-only	The index value which uniquely identifies the CSU interface to which this entry is applicable.
INT csuAlarm	1.3.6.1.4.1.343.6.36.1.1.1.2	INTEGER	read-only	The currently active alarm condition, if any. Red alarm corresponds to a Loss Of Signal (LOS), and most commonly occurs when the cable is unplugged or broken. Blue alarm indicates that the local equipment is properly connected but that the carrier CSU is sending a unique data pattern, indicating that it has lost its remote data source. Yellow alarm indicates that the local equipment is receiving a valid signal, but this signal indicates that the carrier CSU cannot frmae to a signal from us. This is normal for up to 30 seconds after connection, but if it persists indicates that there is a break in the T1 connection in the direction toward the carrier. Out Of Framing is any other condition severe enough that the local CSU cannot lock onto the signal from the carrier CSU. This may be because of mismatched configurations. Likely candidates are Line Coding and Framing Format. If these are correctly set at both ends, the line should be tested by the T1 service provider.
INT csuReceiveLevel	1.3.6.1.4.1.343.6.36.1.1.1.3	INTEGER	read-only	The currently detected signal strength. 1:+2 to -7.5db 2:-7.5 to -15db 3:-15 to -22.5db 4: < -22.5 db
INT csuLoopbackState	1.3.6.1.4.1.343.6.36.1.1.1.4	INTEGER	read-only	This variable identifies the current active loopback, if any.
CTR csuLossofsynchronization	1.3.6.1.4.1.343.6.36.1.1.1.5	Counter	read-only	A count of the number of seconds during which a Loss of synchronization has been triggered
CTR csuChangeofFrameAlignment	1.3.6.1.4.1.343.6.36.1.1.1.6	Counter	read-only	A count of the number of times that there has been a change of Frame Alignment
CTR csuEightZeroDetect	1.3.6.1.4.1.343.6.36.1.1.1.7	Counter	read-only	A count of the number of times that a string of 8 contiguous zeros has been detected
CTR csuSixteenZeroDetect	1.3.6.1.4.1.343.6.36.1.1.1.8	Counter	read-only	A count of the number of times that a string of 16 contiguous zeros has been detected
CTR csuSeverelyErroredFramingEvent	1.3.6.1.4.1.343.6.36.1.1.1.9	Counter	read-only	A count of number of severely Severely Errored Framing Events
CTR csuB8ZSCodeWordDetect	1.3.6.1.4.1.343.6.36.1.1.1.10	Counter	read-only	A count of the number of times that a B8ZS Code Word has been detected
CTR csuFrameBitError	1.3.6.1.4.1.343.6.36.1.1.1.11	Counter	read-only	A count of Frame Bit Errors
CTR csuReceivePulseDensityViolation	1.3.6.1.4.1.343.6.36.1.1.1.12	Counter	read-only	A count of Receive Pulse Density Violations
CTR csuTransmitPulseDensityViolation	1.3.6.1.4.1.343.6.36.1.1.1.13	Counter	read-only	A count of Transmit Pulse Density Violations
CTR csuJitterAttenuatorLimitTrip	1.3.6.1.4.1.343.6.36.1.1.1.14	Counter	read-only	A count of Jitter Attenuator Limit Trips
CTR csuLossofReceiveClock	1.3.6.1.4.1.343.6.36.1.1.1.15	Counter	read-only	Loss of Receive Clock
CTR csuFramerReceiveCarrierLoss	1.3.6.1.4.1.343.6.36.1.1.1.16	Counter	read-only	A count of the number of times that a Framer Receive Carrier Loss has ocurred. Because a Framer Receive Carrier Loss is an LOS indicator, this also counts the number of times that the Red alam state has been entered.
CTR csuLineCodeViolationCount	1.3.6.1.4.1.343.6.36.1.1.1.17	Counter	read-only	A count of Line Code Violations
CTR csuPathCodeViolationCount	1.3.6.1.4.1.343.6.36.1.1.1.18	Counter	read-only	A count of Path Code Violations
CTR csuMultiframesOutofSyncCount	1.3.6.1.4.1.343.6.36.1.1.1.19	Counter	read-only	A count of the number of Multiframes which have passed without being able to sucessfully reframe.
CTR csuCRC6errors	1.3.6.1.4.1.343.6.36.1.1.1.20	Counter	read-only	A count of CRC6 errors
STR csuErrorRate	1.3.6.1.4.1.343.6.36.1.1.1.21	DisplayString	read-only	The CSU error rate. This variable describes a rate in scientific notation.
INT csuLinkState	1.3.6.1.4.1.343.6.36.1.1.1.22	INTEGER	read-only	The state of the protocol stack using the CSU
CTR csuErrorsThisSecond	1.3.6.1.4.1.343.6.36.1.1.1.23	Counter	read-only	The number of physical bit errors detected in the last second
INT csuPercentEFS	1.3.6.1.4.1.343.6.36.1.1.1.24	INTEGER	read-only	The number of error free seconds as a percentage of the total available seconds
STR csuTXChannelPayload	1.3.6.1.4.1.343.6.36.1.1.1.25	DisplayString	read-only	Transmit channel payloads, channels 1 through 24
STR csuRXChannelPayload	1.3.6.1.4.1.343.6.36.1.1.1.26	DisplayString	read-only	Receive channel payloads, channels 1 through 24
STR csuDetectedChannelMap	1.3.6.1.4.1.343.6.36.1.1.1.27	DisplayString	read-only	The detected channel map. Each channel maps into one BYTE, starting with channel one in the first byte. A value of 0 indicates that channel activity has been detected ON, 1 indicates that the channel is detected OFF, and 2 that the channel state has not yet been determined.
CTR csuYellowAlarmCount	1.3.6.1.4.1.343.6.36.1.1.1.28	Counter	read-only	A count of the number of Yellow alarms
CTR csuAISDefects	1.3.6.1.4.1.343.6.36.1.1.1.29	Counter	read-only	A count of the number of AIS Defects
csuConfigTable	1.3.6.1.4.1.343.6.36.1.2		not-accessible	The CSU Configuration table.
csuConfigEntry	1.3.6.1.4.1.343.6.36.1.2.1		not-accessible	An entry in the CSU Configuration table.
INT csuConfigLineIndex	1.3.6.1.4.1.343.6.36.1.2.1.1	INTEGER	read-only	The index value which uniquely identifies the CSU interface to which this entry is applicable.
INT csuChannelBandwidth	1.3.6.1.4.1.343.6.36.1.2.1.2	INTEGER	read-only
INT csuDataInversion	1.3.6.1.4.1.343.6.36.1.2.1.3	INTEGER	read-only
INT csuDataCoding	1.3.6.1.4.1.343.6.36.1.2.1.4	INTEGER	read-only
INT csuTimingMode	1.3.6.1.4.1.343.6.36.1.2.1.5	INTEGER	read-only
INT csuLineBuildOut	1.3.6.1.4.1.343.6.36.1.2.1.6	INTEGER	read-only	Line Build out values: to be interpreted as follows: csu0DB(1) 0 LBO 0 dB csu75DB(2) 1 LBO -7.5 dB csu15(3) 2 LBO -15 dB csu225(4) 3 LBO -22.5 dB csu0_133(5) 4 LBO 0 to 133 feet csu133_266(6) 5 LBO 133 to 266 feet csu266_399(7) 6 LBO 266 to 399 feet csu399_533(8) 7 LBO 399 to 533 feet csu533_655(9) 8 LBO 533 to 655 feet
INT csuLineCode	1.3.6.1.4.1.343.6.36.1.2.1.7	INTEGER	read-only
INT csuPulseDensityEnforcer	1.3.6.1.4.1.343.6.36.1.2.1.8	INTEGER	read-only
INT csuFramingFormat	1.3.6.1.4.1.343.6.36.1.2.1.9	INTEGER	read-only
INT csuJapaneseCRC6	1.3.6.1.4.1.343.6.36.1.2.1.10	INTEGER	read-only
INT csuReceiverSensitivity	1.3.6.1.4.1.343.6.36.1.2.1.11	INTEGER	read-only
INT csuFDLidleCode	1.3.6.1.4.1.343.6.36.1.2.1.12	INTEGER	read-only
INT csuANSIPRMEnable	1.3.6.1.4.1.343.6.36.1.2.1.13	INTEGER	read-only
INT csuANSIPRMaddress	1.3.6.1.4.1.343.6.36.1.2.1.14	INTEGER	read-only
INT csuATTresponseEnable	1.3.6.1.4.1.343.6.36.1.2.1.15	INTEGER	read-only
INT csuATTresponseaddress	1.3.6.1.4.1.343.6.36.1.2.1.16	INTEGER	read-only
STR csuAllocatedChannelMap	1.3.6.1.4.1.343.6.36.1.2.1.17	DisplayString	read-only	The allocated channel map. Each channel maps into one BYTE, starting with channel one in the first byte. A value indicates that channel is configured ON, and 1 indicates that the channel is configured OFF.
csuFracTable	1.3.6.1.4.1.343.6.36.1.3		not-accessible	The CSU Fractional table.
csuFracEntry	1.3.6.1.4.1.343.6.36.1.3.1		not-accessible	An entry in the CSU Fractional table.
INT csuFracLineIndex	1.3.6.1.4.1.343.6.36.1.3.1.1	INTEGER	read-only	The index value which uniquely identifies the DS1 interface to which this entry is applicable. The interface identified by a particular value of this index is the same interface as identified by the same value a csuLineIndex object instance.
INT csuFracNumber	1.3.6.1.4.1.343.6.36.1.3.1.2	INTEGER	read-only	The channel number for this entry.
INT csuFracInUse	1.3.6.1.4.1.343.6.36.1.3.1.3	INTEGER	read-only	Indicates whether this channel has been configured as part of the fractional arrangement.
INT csuFracDetected	1.3.6.1.4.1.343.6.36.1.3.1.4	INTEGER	read-only	Indicates the result of channel autodetection. A value of InUse or NotInUse should match the setting of configuration for this channel

RFC description

Provides CSU hardware statistics and monitoring for T1/E1 interfaces, extending RFC1406 DS1 MIB objects.

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Download INTEL-CSU-HW-MIB

What Is INTEL-CSU-HW-MIB?

Supported Devices

Monitoring Examples

What Can Be Monitored

This MIB depends on

Related MIBs

RFC description