ADSL-LINE-EXT-MIB

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Organization: IETF ADSL MIB Working Group

Last Updated: 2002-12-10

Category: DSL and Broadband, Network Interfaces

Description: Adds extension objects for ADSL line management, supplementing ADSL-LINE-MIB with further objects for administering Asymmetric Digital Subscriber Line interfaces.

IPNetwork Monitor uses several OIDs from this MIB in network discovery and polling the applicable devices. Start monitoring ADSL-LINE-EXT-MIB with a free 30-day trial of IPNetwork Monitor.

What Is ADSL-LINE-EXT-MIB?

ADSL-LINE-EXT-MIB is a vendor-neutral IETF standards-track MIB published as RFC 3440, defining supplemental managed objects that extend the earlier ADSL-LINE-MIB (RFC 2662). It exposes additional configuration and status objects for Asymmetric Digital Subscriber Line interfaces not covered by the base MIB, generally covering line-rate, framing/annex mode, and alarm/threshold extensions. As a line-interface extension MIB it is used to monitor the operational and fault status of ADSL physical interfaces — link state, rate adaptation, and error/alarm conditions — rather than general chassis hardware health. It has an explicit, acknowledged dependency on ADSL-LINE-MIB (RFC 2662), which it supplements rather than replaces. It is deployed on any standards-compliant DSL access equipment (DSLAMs, ADSL modems/routers) from any vendor that implements the IETF ADSL MIB suite, and consulting the ADSL-LINE-EXT-MIB OID list alongside the base ADSL-LINE-MIB gives a fuller register of both rate/alarm extension objects and the original channel objects.

IPNetwork Monitor allows you to monitor SNMP objects defined in ADSL-LINE-EXT-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

vendor-neutral, standards-based MIB, not tied to a specific manufacturer — applies to ADSL DSLAMs and ADSL modems/routers

Monitoring Examples

An operator managing a DSLAM would poll this extension MIB's rate and alarm-configuration objects alongside the base ADSL-LINE-MIB's channel tables to get a fuller picture of an individual subscriber's line performance. Because no sample objects were available for this module, a typical use is cross-referencing extension objects with the base MIB's line-status counters to detect a line that has re-trained repeatedly or fallen back to a lower sync rate. Such behavior typically indicates copper-pair noise, distance, or cross-talk issues on the subscriber loop.

What Can Be Monitored

ADSL line rate/rate-adaptation mode
line alarm/threshold configuration
framing/annex mode
line status extension counters

Imported Objects

From ADSL-LINE-MIB

adslAtucIntervalEntry	OBJECT-TYPE
adslAtucPerfDataEntry	OBJECT-TYPE
adslAturIntervalEntry	OBJECT-TYPE
adslAturPerfDataEntry	OBJECT-TYPE
adslLineAlarmConfProfileEntry	OBJECT-TYPE
adslLineConfProfileEntry	OBJECT-TYPE
adslLineEntry	OBJECT-TYPE
adslMIB	MODULE-IDENTITY

From ADSL-TC-MIB

AdslPerfCurrDayCount
AdslPerfPrevDayCount

From PerfHist-TC-MIB

PerfCurrentCount
PerfIntervalCount

From SNMP-FRAMEWORK-MIB

SnmpAdminString

From SNMPv2-CONF

MODULE-COMPLIANCE
NOTIFICATION-GROUP
OBJECT-GROUP

From SNMPv2-SMI

Counter32
Integer32
MODULE-IDENTITY
NOTIFICATION-TYPE
OBJECT-TYPE

From SNMPv2-TC

TEXTUAL-CONVENTION

OIDs

OID symbolic	OID numeric	Type	Access	Description
adslAlarmConfProfileExtEntry	1.3.6.1.2.1.10.94.3.1.23.1		not-accessible	An entry extends the adslLineAlarmConfProfileTable defined in [RFC2662]. Each entry corresponds to an ADSL alarm profile.
adslAlarmConfProfileExtTable	1.3.6.1.2.1.10.94.3.1.23		not-accessible	This table extends the adslLineAlarmConfProfileTable and provides threshold parameters for all the counters defined in this MIB module.
NTF adslAtucFailedFastRThreshTrap	1.3.6.1.2.1.10.94.3.1.24.1.0.1			Failed Fast Retrains 15-minute threshold reached.
adslAtucIntervalExtEntry	1.3.6.1.2.1.10.94.3.1.19.1		not-accessible	An entry in the adslAtucIntervalExtTable.
adslAtucIntervalExtTable	1.3.6.1.2.1.10.94.3.1.19		not-accessible	This table provides one row for each ATU-C performance data collection interval for ADSL physical interfaces whose IfEntries' ifType is equal to adsl(94).
NUM adslAtucIntervalFailedFastR	1.3.6.1.2.1.10.94.3.1.19.1.2	PerfIntervalCount	read-only	For the each interval, adslAtucIntervalFailedFastR reports the number of seconds during which there have been failed fast retrains.
NUM adslAtucIntervalFastR	1.3.6.1.2.1.10.94.3.1.19.1.1	PerfIntervalCount	read-only	For the current interval, adslAtucIntervalFastR reports the current number of seconds during which there have been fast retrains.
NUM adslAtucIntervalSesL	1.3.6.1.2.1.10.94.3.1.19.1.3	PerfIntervalCount	read-only	For the each interval, adslAtucIntervalSesL reports the number of seconds during which there have been severely errored seconds-line.
NUM adslAtucIntervalUasL	1.3.6.1.2.1.10.94.3.1.19.1.4	PerfIntervalCount	read-only	For the each interval, adslAtucIntervalUasL reports the number of seconds during which there have been unavailable seconds-line.
PER adslAtucPerfCurr15MinFailedFastR	1.3.6.1.2.1.10.94.3.1.18.1.6	PerfCurrentCount	read-only	For the current 15-minute interval, adslAtucPerfCurr15MinFailedFastR reports the current number of seconds during which there have been failed fast retrains.
PER adslAtucPerfCurr15MinFastR	1.3.6.1.2.1.10.94.3.1.18.1.5	PerfCurrentCount	read-only	For the current 15-minute interval, adslAtucPerfCurr15MinFastR reports the current number of seconds during which there have been fast retrains.
PER adslAtucPerfCurr15MinSesL	1.3.6.1.2.1.10.94.3.1.18.1.7	PerfCurrentCount	read-only	For the current 15-minute interval, adslAtucPerfCurr15MinSesL reports the current number of seconds during which there have been severely errored seconds-line.
PER adslAtucPerfCurr15MinUasL	1.3.6.1.2.1.10.94.3.1.18.1.8	PerfCurrentCount	read-only	For the current 15-minute interval, adslAtucPerfCurr15MinUasL reports the current number of seconds during which there have been unavailable seconds-line.
ADS adslAtucPerfCurr1DayFailedFastR	1.3.6.1.2.1.10.94.3.1.18.1.10	AdslPerfCurrDayCount	read-only	For the current day as measured by adslAtucPerfCurr1DayTimeElapsed [RFC2662], adslAtucPerfCurr1DayFailedFastR reports the number of seconds during which there have been failed fast retrains.
ADS adslAtucPerfCurr1DayFastR	1.3.6.1.2.1.10.94.3.1.18.1.9	AdslPerfCurrDayCount	read-only	For the current day as measured by adslAtucPerfCurr1DayTimeElapsed [RFC2662], adslAtucPerfCurr1DayFastR reports the number of seconds during which there have been fast retrains.
ADS adslAtucPerfCurr1DaySesL	1.3.6.1.2.1.10.94.3.1.18.1.11	AdslPerfCurrDayCount	read-only	For the current day as measured by adslAtucPerfCurr1DayTimeElapsed [RFC2662], adslAtucPerfCurr1DaySesL reports the number of seconds during which there have been severely errored seconds-line.
ADS adslAtucPerfCurr1DayUasL	1.3.6.1.2.1.10.94.3.1.18.1.12	AdslPerfCurrDayCount	read-only	For the current day as measured by adslAtucPerfCurr1DayTimeElapsed [RFC2662], adslAtucPerfCurr1DayUasL reports the number of seconds during which there have been unavailable seconds-line.
adslAtucPerfDataExtEntry	1.3.6.1.2.1.10.94.3.1.18.1		not-accessible	An entry extends the adslAtucPerfDataEntry defined in [RFC2662]. Each entry corresponds to an ADSL line.
adslAtucPerfDataExtTable	1.3.6.1.2.1.10.94.3.1.18		not-accessible	This table extends adslAtucPerfDataTable [RFC2662] with additional ADSL physical line counter information such as unavailable seconds-line and severely errored seconds-line.
ADS adslAtucPerfPrev1DayFailedFastR	1.3.6.1.2.1.10.94.3.1.18.1.14	AdslPerfPrevDayCount	read-only	For the previous day, adslAtucPerfPrev1DayFailedFastR reports the number of seconds during which there were failed fast retrains.
ADS adslAtucPerfPrev1DayFastR	1.3.6.1.2.1.10.94.3.1.18.1.13	AdslPerfPrevDayCount	read-only	For the previous day, adslAtucPerfPrev1DayFastR reports the number of seconds during which there were fast retrains.
ADS adslAtucPerfPrev1DaySesL	1.3.6.1.2.1.10.94.3.1.18.1.15	AdslPerfPrevDayCount	read-only	For the previous day, adslAtucPerfPrev1DaySesL reports the number of seconds during which there were severely errored seconds-line.
ADS adslAtucPerfPrev1DayUasL	1.3.6.1.2.1.10.94.3.1.18.1.16	AdslPerfPrevDayCount	read-only	For the previous day, adslAtucPerfPrev1DayUasL reports the number of seconds during which there were unavailable seconds-line.
C32 adslAtucPerfStatFailedFastR	1.3.6.1.2.1.10.94.3.1.18.1.2	Counter32	read-only	The value of this object reports the count of the number of failed fast line retrains since last agent reset.
C32 adslAtucPerfStatFastR	1.3.6.1.2.1.10.94.3.1.18.1.1	Counter32	read-only	The value of this object reports the count of the number of fast line bs since last agent reset.
C32 adslAtucPerfStatSesL	1.3.6.1.2.1.10.94.3.1.18.1.3	Counter32	read-only	The value of this object reports the count of the number of severely errored seconds-line since last agent reset.
C32 adslAtucPerfStatUasL	1.3.6.1.2.1.10.94.3.1.18.1.4	Counter32	read-only	The value of this object reports the count of the number of unavailable seconds-line since last agent reset.
NTF adslAtucSesLThreshTrap	1.3.6.1.2.1.10.94.3.1.24.1.0.2			Severely errored seconds-line 15-minute threshold reached.
I32 adslAtucThreshold15MinFailedFastR	1.3.6.1.2.1.10.94.3.1.23.1.1	Integer32	read-create	The first time the value of the corresponding instance of adslAtucPerfCurr15MinFailedFastR reaches or exceeds this value within a given 15-minute performance data collection period, an adslAtucFailedFastRThreshTrap notification will be generated. The value '0' will disable the notification. The default value of this object is '0'.
I32 adslAtucThreshold15MinSesL	1.3.6.1.2.1.10.94.3.1.23.1.2	Integer32	read-create	The first time the value of the corresponding instance of adslAtucPerf15MinSesL reaches or exceeds this value within a given 15-minute performance data collection period, an adslAtucSesLThreshTrap notification will be generated. The value '0' will disable the notification. The default value of this object is '0'.
I32 adslAtucThreshold15MinUasL	1.3.6.1.2.1.10.94.3.1.23.1.3	Integer32	read-create	The first time the value of the corresponding instance of adslAtucPerf15MinUasL reaches or exceeds this value within a given 15-minute performance data collection period, an adslAtucUasLThreshTrap notification will be generated. The value '0' will disable the notification. The default value of this object is '0'.
NTF adslAtucUasLThreshTrap	1.3.6.1.2.1.10.94.3.1.24.1.0.3			Unavailable seconds-line 15-minute threshold reached.
adslAturIntervalExtEntry	1.3.6.1.2.1.10.94.3.1.21.1		not-accessible	An entry in the adslAturIntervalExtTable.
adslAturIntervalExtTable	1.3.6.1.2.1.10.94.3.1.21		not-accessible	This table provides one row for each ATU-R performance data collection interval for ADSL physical interfaces whose IfEntries' ifType is equal to adsl(94).
NUM adslAturIntervalSesL	1.3.6.1.2.1.10.94.3.1.21.1.1	PerfIntervalCount	read-only	For the each interval, adslAturIntervalSesL reports the number of seconds during which there have been severely errored seconds-line.
NUM adslAturIntervalUasL	1.3.6.1.2.1.10.94.3.1.21.1.2	PerfIntervalCount	read-only	For the each interval, adslAturIntervalUasL reports the number of seconds during which there have been unavailable seconds-line.
PER adslAturPerfCurr15MinSesL	1.3.6.1.2.1.10.94.3.1.20.1.3	PerfCurrentCount	read-only	For the current 15-minute interval, adslAturPerfCurr15MinSesL reports the current number of seconds during which there have been severely errored seconds-line.
PER adslAturPerfCurr15MinUasL	1.3.6.1.2.1.10.94.3.1.20.1.4	PerfCurrentCount	read-only	For the current 15-minute interval, adslAturPerfCurr15MinUasL reports the current number of seconds during which there have been available seconds-line.
ADS adslAturPerfCurr1DaySesL	1.3.6.1.2.1.10.94.3.1.20.1.5	AdslPerfCurrDayCount	read-only	For the current day as measured by adslAturPerfCurr1DayTimeElapsed [RFC2662], adslAturPerfCurr1DaySesL reports the number of seconds during which there have been severely errored seconds-line.
ADS adslAturPerfCurr1DayUasL	1.3.6.1.2.1.10.94.3.1.20.1.6	AdslPerfCurrDayCount	read-only	For the current day as measured by adslAturPerfCurr1DayTimeElapsed [RFC2662], adslAturPerfCurr1DayUasL reports the number of seconds during which there have been unavailable seconds-line.
adslAturPerfDataExtEntry	1.3.6.1.2.1.10.94.3.1.20.1		not-accessible	An entry extends the adslAturPerfDataEntry defined in [RFC2662]. Each entry corresponds to an ADSL line.
adslAturPerfDataExtTable	1.3.6.1.2.1.10.94.3.1.20		not-accessible	This table contains ADSL physical line counters not defined in the adslAturPerfDataTable from the ADSL-LINE-MIB [RFC2662].
ADS adslAturPerfPrev1DaySesL	1.3.6.1.2.1.10.94.3.1.20.1.7	AdslPerfPrevDayCount	read-only	For the previous day, adslAturPerfPrev1DaySesL reports the number of seconds during which there were severely errored seconds-line.
ADS adslAturPerfPrev1DayUasL	1.3.6.1.2.1.10.94.3.1.20.1.8	AdslPerfPrevDayCount	read-only	For the previous day, adslAturPerfPrev1DayUasL reports the number of seconds during which there were severely errored seconds-line.
C32 adslAturPerfStatSesL	1.3.6.1.2.1.10.94.3.1.20.1.1	Counter32	read-only	The value of this object reports the count of severely errored second-line since the last agent reset.
C32 adslAturPerfStatUasL	1.3.6.1.2.1.10.94.3.1.20.1.2	Counter32	read-only	The value of this object reports the count of unavailable seconds-line since the last agent reset.
NTF adslAturSesLThreshTrap	1.3.6.1.2.1.10.94.3.1.24.2.0.1			Severely errored seconds-line 15-minute threshold reached.
I32 adslAturThreshold15MinSesL	1.3.6.1.2.1.10.94.3.1.23.1.4	Integer32	read-create	The first time the value of the corresponding instance of adslAturPerf15MinSesL reaches or exceeds this value within a given 15-minute performance data collection period, an adslAturSesLThreshTrap notification will be generated. The value '0' will disable the notification. The default value of this object is '0'.
I32 adslAturThreshold15MinUasL	1.3.6.1.2.1.10.94.3.1.23.1.5	Integer32	read-create	The first time the value of the corresponding instance of adslAturPerf15MinUasL reaches or exceeds this value within a given 15-minute performance data collection period, an adslAturUasLThreshTrap notification will be generated. The value '0' will disable the notification. The default value of this object is '0'.
NTF adslAturUasLThreshTrap	1.3.6.1.2.1.10.94.3.1.24.2.0.2			Unavailable seconds-line 15-minute threshold reached.
adslConfProfileExtEntry	1.3.6.1.2.1.10.94.3.1.22.1		not-accessible	An entry extends the adslLineConfProfileEntry defined in [RFC2662]. Each entry corresponds to an ADSL line profile.
adslConfProfileExtTable	1.3.6.1.2.1.10.94.3.1.22		not-accessible	The adslConfProfileExtTable extends the ADSL line profile configuration information in the adslLineConfProfileTable from the ADSL-LINE-MIB [RFC2662] by adding the ability to configure the ADSL physical line mode.
INT adslConfProfileLineType	1.3.6.1.2.1.10.94.3.1.22.1.1	INTEGER	read-create	This object is used to configure the ADSL physical line mode. It has following valid values: noChannel(1), when no channels exist. fastOnly(2), when only fast channel exists. interleavedOnly(3), when only interleaved channel exist. fastOrInterleaved(4), when either fast or interleaved channels can exist, but only one at any time. fastAndInterleaved(5), when both the fast channel and the interleaved channel exist. In the case when no value has been set, the default Value is noChannel(1).
adslExtAtucPhysPerfCounterGroup	1.3.6.1.2.1.10.94.3.2.1.2			A collection of objects providing raw performance counts on an ADSL Line (ATU-C end).
adslExtAtucTraps	1.3.6.1.2.1.10.94.3.1.24.1
adslExtAtucTrapsPrefix	1.3.6.1.2.1.10.94.3.1.24.1.0
adslExtAturPhysPerfCounterGroup	1.3.6.1.2.1.10.94.3.2.1.3			A collection of objects providing raw performance counts on an ADSL Line (ATU-C end).
adslExtAturTraps	1.3.6.1.2.1.10.94.3.1.24.2
adslExtAturTrapsPrefix	1.3.6.1.2.1.10.94.3.1.24.2.0
adslExtCompliances	1.3.6.1.2.1.10.94.3.2.2
adslExtConformance	1.3.6.1.2.1.10.94.3.2
adslExtGroups	1.3.6.1.2.1.10.94.3.2.1
adslExtLineAlarmConfProfileGroup	1.3.6.1.2.1.10.94.3.2.1.5			A collection of objects providing alarm profile control for the ADSL system.
adslExtLineConfProfileControlGroup	1.3.6.1.2.1.10.94.3.2.1.4			A collection of objects providing profile control for the ADSL system.
adslExtLineGroup	1.3.6.1.2.1.10.94.3.2.1.1			A collection of objects providing extended configuration information about an ADSL Line.
adslExtLineMibAtucCompliance	1.3.6.1.2.1.10.94.3.2.2.1			The compliance statement for SNMP entities which represent ADSL ATU-C interfaces.
adslExtMIB	1.3.6.1.2.1.10.94.3			Copyright (C) The Internet Society (2002). This version of this MIB module is part of RFC 3440; see the RFC itself for full legal notices. This MIB Module is a supplement to the ADSL-LINE-MIB [RFC2662].
adslExtMibObjects	1.3.6.1.2.1.10.94.3.1
adslExtNotificationsGroup	1.3.6.1.2.1.10.94.3.2.1.6			The collection of ADSL extension notifications.
adslExtTraps	1.3.6.1.2.1.10.94.3.1.24
STR adslLineConfProfileDualLite	1.3.6.1.2.1.10.94.3.1.17.1.5	SnmpAdminString	read-write	This object extends the definition an ADSL line and associated channels (when applicable) for cases when it is configured in dual mode, and operating in a G.Lite-type mode as denoted by adslLineTransAtucActual. Dual mode exists when the object, adslLineTransAtucConfig, is configured with one or more full-rate modes and one or more G.Lite modes simultaneously. When 'dynamic' profiles are implemented, the value of object is equal to the index of the applicable row in the ADSL Line Configuration Profile Table, AdslLineConfProfileTable defined in ADSL-MIB [RFC2662]. In the case when dual-mode has not been enabled, the value of the object will be equal to the value of the object adslLineConfProfile [RFC2662]. When `static' profiles are implemented, in much like the case of the object, adslLineConfProfileName [RFC2662], this object's value will need to algorithmically represent the characteristics of the line. In this case, the value of the line's ifIndex plus a value indicating the line mode type (e.g., G.Lite, Full-rate) will be used. Therefore, the profile's name is a string concatenating the ifIndex and one of the follow values: Full or Lite. This string will be fixed-length (i.e., 14) with leading zero(s). For example, the profile name for ifIndex that equals '15' and is a full rate line, it will be '0000000015Full'.
adslLineExtEntry	1.3.6.1.2.1.10.94.3.1.17.1		not-accessible	An entry extends the adslLineEntry defined in [RFC2662]. Each entry corresponds to an ADSL line.
adslLineExtTable	1.3.6.1.2.1.10.94.3.1.17		not-accessible	This table is an extension of RFC 2662. It contains ADSL line configuration and monitoring information. This includes the ADSL line's capabilities and actual ADSL transmission system.
INT adslLineGlitePowerState	1.3.6.1.2.1.10.94.3.1.17.1.4	INTEGER	read-only	The value of this object specifies the power state of this interface. L0 is power on, L1 is power on but reduced and L3 is power off. Power state cannot be configured by an operator but it can be viewed via the ifOperStatus object for the managed ADSL interface. The value of the object ifOperStatus is set to down(2) if the ADSL interface is in power state L3 and is set to up(1) if the ADSL line interface is in power state L0 or L1. If the object adslLineTransAtucActual is set to a G.992.2 (G.Lite)-type transmission mode, the value of this object will be one of the valid power states: L0(2), L1(3), or L3(4). Otherwise, its value will be none(1).
ADS adslLineTransAtucActual	1.3.6.1.2.1.10.94.3.1.17.1.3	AdslTransmissionModeType	read-only	The actual transmission mode of the ATU-C. During ADSL line initialization, the ADSL Transceiver Unit - Remote terminal end (ATU-R) will determine the mode used for the link. This value will be limited a single transmission mode that is a subset of those modes enabled by the ATU-C and denoted by adslLineTransAtucConfig. After an initialization has occurred, its mode is saved as the 'Current' mode and is persistence should the link go down. This object returns 0 (i.e. BITS with no mode bit set) if the mode is not known.
ADS adslLineTransAtucCap	1.3.6.1.2.1.10.94.3.1.17.1.1	AdslTransmissionModeType	read-only	The transmission modes, represented by a bitmask that the ATU-C is capable of supporting. The modes available are limited by the design of the equipment.
ADS adslLineTransAtucConfig	1.3.6.1.2.1.10.94.3.1.17.1.2	AdslTransmissionModeType	read-write	The transmission modes, represented by a bitmask, currently enabled by the ATU-C. The manager can only set those modes that are supported by the ATU-C. An ATU-C's supported modes are provided by AdslLineTransAtucCap.

FAQ

What does ADSL-LINE-EXT-MIB add on top of the base ADSL-LINE-MIB when monitoring a DSLAM?
As RFC 3440's supplement to RFC 2662, it exposes additional line-rate, framing/annex mode, and alarm/threshold objects not covered by the original ADSL-LINE-MIB, giving an operator a fuller picture of an ADSL interface's rate-adaptation behavior and configured alarm thresholds.

How is ADSL-LINE-EXT-MIB used to troubleshoot a DSL line?
An engineer checks the line's rate-adaptation mode and framing/annex configuration alongside its alarm/threshold objects to confirm the interface is running in the expected mode and to see whether any configured line alarms have crossed threshold -- pointing to physical-layer link issues rather than chassis-level hardware faults.

RFC description

Defines extension managed objects for ADSL line management, supplementing the ADSL-LINE-MIB with additional objects for managing Asymmetric Digital Subscriber Line interfaces.

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What Is ADSL-LINE-EXT-MIB?

Supported Devices

Monitoring Examples

What Can Be Monitored

This MIB depends on

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RFC description