INNOVX-CASCADE-LIU-MIB

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

Description: InnoVX MIB covering cascade line interface unit (LIU) objects used in T1/E1 transmission equipment.

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What Is INNOVX-CASCADE-LIU-MIB?

INNOVX-CASCADE-LIU-MIB is a vendor-specific MIB (branded 'Cascade') for managing line interface unit (LIU) cards handling T1/E1 (DS1) transmission circuits, typically in multiplexer or channel-bank access equipment. It exposes physical-layer configuration and status such as frame type (set versus operational), line coding, interface type, and DS1 receive signal level, together with a drop-and-insert channel table and bipolar-violation (BPV) alarm severity settings. This data is squarely aimed at monitoring the hardware status of T1/E1 transmission links — whether a circuit is in service, what signal level is being received, and whether bipolar violations or other line alarms are occurring that would indicate a degraded or failed span. Its object naming (DS1IntfRcvLevel, frame type, line coding) closely parallels the IETF DS1/E1 MIB (RFC 1406/2495) conventions, suggesting it extends or mirrors that standard model with vendor-specific drop-and-insert and alarm features. It is deployed in legacy telecom/enterprise access networks using T1/E1 multiplexers where cascaded LIU cards need central alarm and circuit-status visibility. Engineers can download the INNOVX-CASCADE-LIU-MIB file directly to load it into their MIB browser.

IPNetwork Monitor allows you to monitor SNMP objects defined in INNOVX-CASCADE-LIU-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

T1/E1 line interface unit (LIU) card
channel bank / multiplexer access equipment

Monitoring Examples

An administrator would poll cascadeInService and cascadeDS1IntfRcvLevel per circuit to confirm a T1/E1 span is active and receiving signal within expected range, flagging a span whose receive level drops sharply as a likely cable or far-end fault. cascadeOperFrameType versus cascadeSetFrameType shows whether the negotiated framing matches the configured setting, revealing framing mismatches. The cascadeDropAndInsertTable, keyed by channelIndex, lets an operator see how individual channels are cross-connected, while cascadeBpvTrapSeverity governs how bipolar-violation alarms are escalated when line errors occur.

What Can Be Monitored

circuit in-service status
DS1 receive signal level
frame type (configured vs. operational)
line coding
drop-and-insert channel mapping
bipolar violation alarm severity

Imported Objects

From INNOVX-CORE-MIB

casGroup

OBJECT-IDENTITY

From RFC-1212

OBJECT-TYPE

From RFC1155-SMI

Gauge

From RFC1213-MIB

DisplayString

OIDs

OID symbolic	OID numeric	Type	Access	Description
adminGroup	1.3.6.1.4.1.498.22.1.4.1
STR cascadeMIBversion	1.3.6.1.4.1.498.22.1.4.1.1	DisplayString	read-only	Identifies the version of the MIB as `X.YZT' where: X: Major Revision (1-9) Y: Minor Revision (0-9) Z: Typographical Revision (0-9) T: Test Revision (A-Z) Upon formal release, the test revision will not be present.
configGroup	1.3.6.1.4.1.498.22.1.4.2
INT cascadeInService	1.3.6.1.4.1.498.22.1.4.2.1	INTEGER	read-write	Defines the cascade interface port state. WEBFLAG In Service Out Of Service WEBEND
INT cascadeSetFrameType	1.3.6.1.4.1.498.22.1.4.2.2	INTEGER	read-write	Defines the line interface framing type as follows: `esf' sets extended superframe format, `d4' sets D4 framing format, `auto' instructs the unit to determine framing WEBFLAG ESF D4 Automatic WEBEND
INT cascadeOperFrameType	1.3.6.1.4.1.498.22.1.4.2.3	INTEGER	read-only	Identifies the line interface framing type acquired by the unit as defined by the `cascadeNetSetFrameType' object as follows: `esf' indicates extended superframe format, `d4' indicates D4 framing format, `auto' indicates the unit is still `acquiring', frame type is indeterminate at this time. WEBFLAG ESF D4 Automatic WEBEND
INT cascadeLineCoding	1.3.6.1.4.1.498.22.1.4.2.4	INTEGER	read-write	Defines the Zero Code Suppression mechanism for the interface. `b8zs' defines the use of a specified pattern of normal bits and bipolar violations used to replace a sequence of eight zero bits. `ami' (alternate mark inversion) defines a mode wherein no zero code suppression is provided. Therefore ami line encoding does not protect against inadequate ones density. The DSU will enforce an 8x(N+1) minimum ones density requirement when ap553CasLineCoding == `ami' and cascadeDS0Format == `nx64k' and cascadeDS0AllocationScheme == `consecutive'. WEBFLAG B8ZS AMI WEBEND
INT cascadeIntfType	1.3.6.1.4.1.498.22.1.4.2.5	INTEGER	read-write	Defines the operating mode of the interface, and the attenuation or gain. The following values specify operation as a standard DS1 interface, with the specified attenuation: `ds1-auto-lbo' allows the unit to determine the transmit buildout value. `ds1-zero-dB' sets the transmit buildout to 0.0 dB. `ds1-neg7pt5-dB' sets the transmit buildout to -7.5dB. `ds1-neg15pt0-dB' sets the transmit buildout to -15.0dB. `ds1-neg22pt5-dB' sets the transmit buildout to -22.5dB. The following values specify operation as a standard cross-connect DSX-1 interface, with the specified transmitter gain: `dsx1-preeq130-ft' -- transmitter gain for 0 < 130 feet `dsx1-preeq260-ft' -- transmitter gain for 130 < 260 feet `dsx1-preeq390-ft' -- transmitter gain for 260 < 390 feet `dsx1-preeq530-ft' -- transmitter gain for 390 < 530 feet `dsx1-preeq655-ft' -- transmitter gain for 530 < 655 feet WEBFLAG DS1 Auto Line Buildout DS1 0.0dB Line Buildout DS1 -7.5dB Line Buildout DS1 -15.0dB Line Buildout DS1 -22.5dB Line Buildout DSX1 0 - 133 ft Pre-equalization DSX1 133 - 266 ft Pre-equalization DSX1 266 - 399 ft Pre-equalization DSX1 399 - 533 ft Pre-equalization DSX1 533 - 655 ft Pre-equalization WEBEND
INT cascadeDS1IntfRcvLevel	1.3.6.1.4.1.498.22.1.4.2.6	INTEGER	read-only	Identifies the Cascade Interface Receive level for a DS1 type interface. `noSignal' indicates that no T1 signal is detected on the interface, (the `NS' LED on the unit's front panel will be on. `pos2toNeg7pt5-dB'=> + 2.0dB to - 7.5dB DS1 interface receive level `neg7pt5toNeg15-dB'=> - 7.5dB to -15.0dB DS1 interface receive level `neg15toNeg22pt5-dB'=> -15.0dB to -22.5dB DS1 interface receive level `lessThanNeg22pt5-dB'=> less than -22.5dB DS1 interface receive level `invalidDSX1intf=> invalid object, interface type is DSX1 WEBFLAG + 2.0dB to - 7.5dB - 7.5dB to -15.0dB -15.0dB to -22.5dB less than -22.5dB not applicable WEBEND
cascadeDropAndInsertTable	1.3.6.1.4.1.498.22.1.4.2.7		not-accessible	This table defines the channel type for each of the timeslots passthru from LIU to Cascade. This contiguous timeslot bundle is defined via the objects ap553StartingDS0 and ap553NumDS0s from AP553Liu.mib.
channelEntry	1.3.6.1.4.1.498.22.1.4.2.7.1		not-accessible	Identifies an entry (row) in cascadeDropAndInsertMapTable table.
INT channelIndex	1.3.6.1.4.1.498.22.1.4.2.7.1.1	INTEGER	read-only	Identifies a channel (row)for the time slots - 1-24 for T1 and 1-32 for E1. For E1, 1 = TS0 and 32 = TS31.
INT cascadeDropAndInsert	1.3.6.1.4.1.498.22.1.4.2.7.1.2	INTEGER	read-write	Rules: 1) For a T1 interface timeslots 25 - 32 are not available and will contain 5 for each of these timeslots. 2) For an E1 interface timeslot 0 is not available and will contain 5 for this timeslot. 3) For an E1 interface timeslot 16 is not available if CAS is enabled. and will contain 4 for this timeslot. CHANNEL TYPE none(1) - This timeslot is dropped at DTE port. clearChannel(2) - all eight bits are passed through to cascade port. signallingChannel(3) - used for voice channels with robbed-bit signalling (for T1 networks). casChannel(4) - used for timeslot 16 when CAS is on when LIU is E1 interface. tsNotAvailable(5) - Used for timeslots 25 - 32 when LIU is T1 interface. Used for timeslot 0 when LIU is E1 interface. WEBFLAG DTE Channel Clear Channel Voice Channel CAS Channel TS Not Avail WEBEND
alarmCfgGroup	1.3.6.1.4.1.498.22.1.4.3
INT cascadeBpvTrapSeverity	1.3.6.1.4.1.498.22.1.4.3.1	INTEGER	read-write	Controls the reporting and defines the severity of the Cascade Bipolar Violations Alarm when this event occurs and meets the window and threshold requirements for reporting as specified by the associated window and threshold object values below. WEBFLAG Inhibit Critical Major Minor Warning Info WEBEND
INT cascadeBpvWindow	1.3.6.1.4.1.498.22.1.4.3.2	INTEGER	read-write	Specifies the sampling window in which to report the Cascade Bipolar Violationslarm condition as active. All other values specify the size of the sampling window in which the event may be reported one time as active, as controlled by the associated mask object value, when the associated obj's threshold condition is met. WEBFLAG One Minute Fifteen Minutes One Hour WEBEND
INT cascadeBpvThresh	1.3.6.1.4.1.498.22.1.4.3.3	INTEGER	read-write	Specifies the threshold of events to be exceeded for reporting the Cascade Bipolar Violations alarm condition. When the associated window object value is `report_all' the value of this object is ignored. WEBFLAG 1 10 100 1,000 10,000 WEBEND
INT cascadeCrcTrapSeverity	1.3.6.1.4.1.498.22.1.4.3.4	INTEGER	read-write	Controls the reporting and defines the severity of the Cascade Cyclical Redundancy Check Alarm when this event occurs and meets the window and threshold requirements for reporting as specified by the associated window and threshold object values below. WEBFLAG Inhibit Critical Major Minor Warning Info WEBEND
INT cascadeCrcWindow	1.3.6.1.4.1.498.22.1.4.3.5	INTEGER	read-write	Specifies the sampling window in which to report the Cascade Cyclical Redundancy Check alarm condition as active. All other values specify the size of the sampling window in which the event may be reported one time as active, as controlled by the associated mask object value, when the associated obj's threshold condition is met. WEBFLAG One Minute Fifteen Minutes One Hour WEBEND
INT cascadeCrcThresh	1.3.6.1.4.1.498.22.1.4.3.6	INTEGER	read-write	Specifies the threshold of events to be exceeded for reporting the Cascade Cyclical Redundancy Check alarm condition. When the associated window object value is `report_all' the value of this object is ignored. WEBFLAG 1 10 100 1,000 10,000 WEBEND
INT cascadeLadTrapSeverity	1.3.6.1.4.1.498.22.1.4.3.7	INTEGER	read-write	Controls the reporting and defines the severity of the Cascade Low Average Density Alarm when this event occurs and meets the window and threshold requirements for reporting as specified by the associated window and threshold object values below. WEBFLAG Inhibit Critical Major Minor Warning Info WEBEND
INT cascadeLadWindow	1.3.6.1.4.1.498.22.1.4.3.8	INTEGER	read-write	Specifies the sampling window in which to report the Cascade Low Average Density alarm condition as active. All other values specify the size of the sampling window in which the event may be reported one time as active, as controlled by the associated mask object value, when the associated obj's threshold condition is met. WEBFLAG One Minute Fifteen Minutes One Hour WEBEND
INT cascadeLadThresh	1.3.6.1.4.1.498.22.1.4.3.9	INTEGER	read-write	Specifies the threshold of events to be exceeded for reporting the Cascade Low Average Density alarm condition. When the associated window object value is `reportAll' the value of this object is ignored. WEBFLAG 1 10 100 1,000 10,000 WEBEND
INT cascadeAisTrapSeverity	1.3.6.1.4.1.498.22.1.4.3.10	INTEGER	read-write	Controls the reporting and defines the severity of the Cascade Alarm Indication Signal Alarm when this event occurs. WEBFLAG Inhibit Critical Major Minor Warning Info WEBEND
INT cascadeLosTrapSeverity	1.3.6.1.4.1.498.22.1.4.3.11	INTEGER	read-write	Controls the reporting and defines the severity of the Cascade Loss of Signal Alarm when this event occurs. WEBFLAG Inhibit Critical Major Minor Warning Info WEBEND
INT cascadeOofTrapSeverity	1.3.6.1.4.1.498.22.1.4.3.12	INTEGER	read-write	Controls the reporting and defines the severity of the Cascade Out of Frame Alarm when this event occurs. WEBFLAG Inhibit Critical Major Minor Warning Info WEBEND
INT cascadeRcdYelTrapSeverity	1.3.6.1.4.1.498.22.1.4.3.13	INTEGER	read-write	Controls the reporting and defines the severity of the Cascade Received Yellow Alarm when this event occurs. WEBFLAG Inhibit Critical Major Minor Warning Info WEBEND
INT cascadeUssTrapSeverity	1.3.6.1.4.1.498.22.1.4.3.14	INTEGER	read-write	Controls the reporting and defines the severity of the Cascade Unavailable Signal State Alarm when this event occurs. WEBFLAG Inhibit Critical Major Minor Warning Info WEBEND
diagnostics	1.3.6.1.4.1.498.22.1.4.4
INT cascadeDiagTest	1.3.6.1.4.1.498.22.1.4.4.1	INTEGER	read-write	Specifies the test to be executed, or stops the current test.
INT cascadeDiagTestDuration	1.3.6.1.4.1.498.22.1.4.4.2	INTEGER	read-write	Defines the length of all LIU diagnostic tests.
INT cascadeDiagTestStatus	1.3.6.1.4.1.498.22.1.4.4.3	INTEGER	read-only	Displays the test in progress, if any.
statusGroup	1.3.6.1.4.1.498.22.1.4.5
OCT cascadePortStatus	1.3.6.1.4.1.498.22.1.4.5.1	OCTET STRING	read-only	A bitwise snapshot of interface port status conditions and EIA signals, where 0 = condition not present, and 1 = condition present, as follows: Octet 1 - CASCADE Interface Port Status bit 7 - n/u bit 6 - n/u bit 5 - n/u bit 4 - n/u bit 3 - Alarm Indication Signal bit 2 - Out Of Frame Alarm bit 1 - Loss Of Signal Alarm bit 0 - Remote Alarm

RFC description

InnoVX MIB for managing cascade line interface unit (LIU) objects in T1/E1 transmission equipment.

Start monitoring InnoVX/GDC Cascade line interface unit (LIU) card, T1/E1 with a free 30-day trial of IPNetwork Monitor. Import MIBs, browse SNMP OIDs, create custom SNMP monitors, configure alerts, and monitor any SNMP-enabled network device from a single console.

Download INNOVX-CASCADE-LIU-MIB

What Is INNOVX-CASCADE-LIU-MIB?

Supported Devices

Monitoring Examples

What Can Be Monitored

This MIB depends on

Related MIBs

RFC description