Network Working Group                                             B. Ray
Request for Comments: 3276                        PESA Switching Systems
Category: Standards Track                                        R. Abbi
                                                                Alcatel
                                                               May 2002


Definitions of Managed Objects for High Bit-Rate DSL - 2nd generation
        (HDSL2) and Single-Pair High-Speed Digital Subscriber
                          Line (SHDSL) Lines

Status of this Memo

  This document specifies an Internet standards track protocol for the
  Internet community, and requests discussion and suggestions for
  improvements.  Please refer to the current edition of the "Internet
  Official Protocol Standards" (STD 1) for the standardization state
  and status of this protocol.  Distribution of this memo is unlimited.

Copyright Notice

  Copyright (C) The Internet Society (2002).  All Rights Reserved.

Abstract

  This document defines a portion of the Management Information Base
  (MIB) module for use with network management protocols in the
  Internet community.  In particular, it describes objects used for
  managing High Bit-Rate DSL - 2nd generation (HDSL2) and Single-Pair
  High-Speed Digital Subscriber Line (SHDSL) interfaces.

Table of Contents

  1.   Introduction .............................................  2
  2.   The SNMP Network Management Framework ....................  2
  3.   Introduction .............................................  3
  3.1  Relationship of the HDSL2/SHDSL Line MIB to other MIBs ...  3
  3.2  IANA Considerations ......................................  5
  4.   Conventions used in the MIB ..............................  5
  4.1  Naming Conventions .......................................  5
  4.2  Textual Conventions ......................................  6
  4.3  Structure ................................................  7
  4.4  Counters, Interval Buckets and Thresholds ................ 10
  4.5  Profiles ................................................. 11
  4.6  Notifications ............................................ 12
  5.   Conformance and Compliance ............................... 14
  6.   Definitions .............................................. 14
  7.   Security Considerations .................................. 60



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  8.   Acknowledgments .......................................... 62
  9.   References ............................................... 63
  10.  Intellectual Property Notice ............................. 65
  11.  Authors' Addresses ....................................... 65
  12.  Full Copyright Statement ................................. 66

1. Introduction

  This document defines a portion of the Management Information Base
  (MIB) module for use with network management protocols in the
  Internet community.  In particular, it describes objects used for
  managing High Bit-Rate DSL - 2nd generation (HDSL2) [18] and Single-
  Pair High-Speed Digital Subscriber Line (SHDSL) interfaces [19].

2.  The SNMP Management Framework

  The SNMP Management Framework presently consists of five major
  components:

  o  An overall architecture, described in RFC 2571 [1].

  o  Mechanisms for describing and naming objects and events for the
     purpose of management.  The first version of this Structure of
     Management Information (SMI) is called SMIv1 and is described in
     STD 16, RFC 1155 [2], STD 16, RFC 1212 [3], and RFC 1215 [4].  The
     second version, called SMIv2, is described in STD 58, RFC 2578
     [5], RFC 2579 [6], and RFC 2580 [7].

  o  Message protocols for transferring management information.  The
     first version of the SNMP message protocol is called SNMPv1 and is
     described in STD 15, RFC 1157 [8].  A second version of the SNMP
     message protocol, which is not an Internet standards track
     protocol, is called SNMPv2c and described is in RFC 1901 [9] and
     RFC 1906 [10].  The third version of the message protocol is
     called SNMPv3 and is described in RFC 1906 [10], RFC 2572 [11],
     and RFC 2574 [12].

  o  Protocol operations for accessing management information.  The
     first set of protocol operations and associated PDU formats is
     described in STD 15, RFC 1157 [8].  A second set of protocol
     operations and associated PDU formats is described in RFC 1905
     [13].

  o  A set of fundamental applications described in RFC 2573 [14] and
     the view-based access control mechanism described in RFC 2575
     [15].





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  A more detailed introduction to the current SNMP Management Framework
  can be found in RFC 2570 [16].

  Managed objects are accessed via a virtual information store, termed
  the Management Information Base or MIB.  Objects in the MIB are
  defined using the mechanisms defined in the SMI.

  This memo specifies a MIB module that is compliant to the SMIv2.  A
  MIB conforming to the SMIv1 can be produced through the appropriate
  translations.  The resulting translated MIB must be semantically
  equivalent, except where objects or events are omitted because no
  translation is possible (use of Counter64).  Some machine readable
  information in SMIv2 will be converted into textual descriptions in
  SMIv1 during the translation process.  However, this loss of machine
  readable information is not considered to change the semantics of the
  MIB.

  The key words "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT",
  "SHOULD", "SHOULD NOT", "RECOMMENDED", "MAY", and "OPTIONAL" in this
  document are to be interpreted as described in RFC 2119 [17].

3.  Introduction

  This document describes an SNMP MIB for managing HDSL2/SHDSL Lines.
  These definitions are based upon the specifications for the HDSL2 and
  SHDSL Embedded Operations Channel (EOC) as defined in ANSI
  T1E1.4/2000-006 [18] and ITU G.991.2 [19].

  The MIB is located in the MIB tree under MIB 2 transmission, as
  discussed in the MIB-2 Integration (RFC 1213 [20] and RFC 2863 [21])
  section of this document.

3.1.  Relationship of the HDSL2/SHDSL Line MIB to other MIBs

  This section outlines the relationship of this MIB with other MIBs
  described in RFCs.  Specifically, IF-MIB as presented in RFC 2863
  [21] is discussed.

3.1.1  General IF-MIB Integration (RFC 2863)

  The HDSL2/SHDSL Line MIB specifies the detailed attributes of a data
  interface.  As such, it needs to integrate with RFC 2863 [21].  The
  IANA has assigned the following ifTypes to HDSL2 and SHDSL:








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  IANAifType ::= TEXTUAL-CONVENTION
      ...
  SYNTAX INTEGER {
      ...
      hdsl2 (168), -- High Bit-Rate DSL, 2nd generation
      shdsl (169), -- Multirate HDSL2
      ...
      }

  Note that the ifFixedLengthGroup from RFC 2863 [21] MUST be supported
  and that the ifRcvAddressGroup does not apply to this MIB.

3.1.2  Usage of ifTable

  The MIB branch identified by this ifType contains tables appropriate
  for this interface type.  Most such tables extend the ifEntry table,
  and are indexed by ifIndex.  For interfaces in systems implementing
  this MIB, those table entries indexed by ifIndex MUST be persistent.

  The following attributes are part of the mandatory ifGeneral group in
  RFC 2863 [21], and are not duplicated in the HDSL2/SHDSL Line MIB.






























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  ===================================================================
      ifIndex                  Interface index.

      ifDescr                  See interfaces MIB [21].

      ifType                   hdsl2(168) or shdsl(169).

      ifSpeed                  Set as appropriate.
                               (This is fixed at 1552000 for HDSL2
                               lines)

      ifPhysAddress            This object MUST have an octet string
                               with zero length.

      ifAdminStatus            See interfaces MIB [21].

      ifOperStatus             See interfaces MIB [21].

      ifLastChange             See interfaces MIB [21].

      ifName                   See interfaces MIB [21].

      ifLinkUpDownTrapEnable   Default to enabled(1).

      ifHighSpeed              Set as appropriate.
                               (For HDSL2 lines, this is fixed at 2)

      ifConnectorPresent       Set as appropriate.

  ===================================================================
                  Figure 1: Use of ifTable Objects

3.2 IANA Considerations

  The HDSL2-SHDSL-LINE-MIB module requires the allocation of a single
  object identifier for its MODULE-IDENTITY.  The IANA has allocated
  this object identifier in the transmission subtree (48), defined in
  the SNMPv2-SMI MIB module.

4.  Conventions used in the MIB

4.1.  Naming Conventions

  A.  xtuC refers to a central site terminal unit;
      H2TU-C for HDSL2, or STU-C for SHDSL.
  B.  xtuR refers to a remote site terminal unit;
      H2TU-R for HDSL2, or STU-R for SHDSL.
  C.  xtu refers to a terminal unit; either an xtuC or xtuR.



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  D.  xru refer to a regenerator unit;
      H2RU for HDSL2, or SRU for SHDSL.
  E.  xU refers to any HDSL2/SHDSL unit; either an xtu or xru.
  F.  CRC is cyclic redundancy check [19].
  G.  ES means errored second [19].
  H.  LOSW means loss of sync word [19].
  I.  LOSWS means LOSW seconds [19].
  J.  SES means severely errored second [19].
  K.  SNR means signal-to-noise ratio [19].
  L.  UAS means unavailable second [19].

4.2.  Textual Conventions

  The following textual conventions are defined to reflect the line
  topology in the MIB (further discussed in the following section) and
  to define the behavior of the statistics to be maintained by an
  agent.

  o   Hdsl2ShdslUnitId:

  Attributes with this syntax uniquely identify each unit in a
  HDSL2/SHDSL span.  It mirrors the EOC addressing mechanism:

  xtuC(1)                - CO terminal unit
  xtuR(2)                - CPE terminal unit
  xru1(3) .. xru8(10)    - regenerators, numbered from
                            central office side
  o   Hdsl2ShdslUnitSide:

  Attributes with this syntax reference the two sides of a unit:

  networkSide(1)   - N in figure 2, below
  customerSide(2)  - C in figure 2, below

  o   Hdsl2ShdslWirePair:

  Attributes with this syntax reference the wire-pairs connecting the
  units:

  wirePair1(1)   - First pair for HDSL2/SHDSL.

  wirePair2(2)   - Optional second pair for SHDSL only.

  o   Hdsl2ShdslTransmissionModeType:

  Attributes with this syntax specify the regional setting for a SHDSL
  line.  Specified as a BITS construct, the two mode types are:




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  region1   - ITU-T G.991.2 Annex A
  region2   - ITU-T G.991.2 Annex B

  o   Hdsl2ShdslPerfCurrDayCount:

  Attributes with this syntax define the behavior of the 1-day (24
  hour) gauges found in the MIB.

  o   Hdsl2Shdsl1DayIntervalCount:

  Attributes with this syntax define the behavior of the 1-day (24
  hour) interval counters found in the MIB.

  o   Hdsl2ShdslPerfTimeElapsed:

  Attributes with this syntax define the behavior of the elapsed time
  counters found in the MIB.

  o   Hdsl2ShdslPerfIntervalThreshold:

  Attributes with this syntax define the behavior of the alarm
  thresholds found in the MIB.

  o   Hdsl2ShdslClockReferenceType

  Attributes with this syntax define the clock references for the
  HDSL2/SHDSL span.

4.3.  Structure

  The MIB is structured into following MIB groups:

  o   Span Configuration Group:

  This group supports MIB objects for configuring parameters for the
  HDSL2/SHDSL span.  It contains the following table:

     - hdsl2ShdslSpanConfTable

  o   Span Status Group:

  This group supports MIB objects for retrieving span status
  information.  It contains the following table:

     - hdsl2ShdslSpanStatusTable






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  o   Unit Inventory Group:

  This group supports MIB objects for retrieving unit inventory
  information about units in HDSL2/SHDSL lines via the EOC. It contains
  the following table:

     - hdsl2ShdslInventoryTable

  o   Segment Endpoint Configuration Group:

  This group supports MIB objects for configuring parameters for the
  HDSL2/SHDSL segment endpoints.  It contains the following table:

     - hdsl2ShdslEndpointConfTable

  o   Segment Endpoint Current Status/Performance Group:

  This group supports MIB objects that provide the current
  status/performance information relating to segment endpoints.  It
  contains the following table:

     - hdsl2ShdslEndpointCurrTable

  o   Segment Endpoint 15-Minute Interval Status/Performance Group:

  This group supports MIB objects that provide historic
  status/performance information relating to segment endpoints in 15-
  minute intervals.  It contains the following table:

     - hdsl2Shdsl15MinIntervalTable

  o   Segment Endpoint 1-Day Interval Status/Performance Group:

  This group supports MIB objects that provide historic
  status/performance information relating to segment endpoints in 1-day
  intervals.  It contains the following table:

     - hdsl2Shdsl1DayIntervalTable

  o   Maintenance Group:

  This group supports MIB objects for performing maintenance operations
  such as loopbacks for HDSL2/SHDSL lines.  It contains the following
  table(s):

     - hdsl2ShdslEndpointMaintTable
     - hdsl2ShdslUnitMaintTable




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  o   Span Configuration Profile Group:

  This group supports MIB objects for defining configuration profiles
  for HDSL2/SHDSL Spans.  It contains the following table:

     - hdsl2ShdslSpanConfProfileTable

  o   Segment Endpoint Alarm Configuration Profile Group:

  This group supports MIB objects for defining alarm configuration
  profiles for HDSL2/SHDSL Segment Endpoints.  It contains the
  following table:

     - hdsl2ShdslEndpointAlarmConfProfileTable

  o   Notifications Group:

  This group defines the notifications supported for HDSL2/SHDSL lines:

     - hdsl2ShdslLoopAttenCrossing
     - hdsl2ShdslSNRMarginCrossing
     - hdsl2ShdslPerfESThresh
     - hdsl2ShdslPerfSESThresh
     - hdsl2ShdslPerfCRCanomaliesThresh
     - hdsl2ShdslPerfLOSWSThresh
     - hdsl2ShdslPerfUASThresh
     - hdsl2ShdslSpanInvalidNumRepeaters
     - hdsl2ShdslLoopbackFailure
     - hdsl2ShdslpowerBackoff
     - hdsl2ShdsldeviceFault
     - hdsl2ShdsldcContinuityFault
     - hdsl2ShdslconfigInitFailure
     - hdsl2ShdslprotocolInitFailure
     - hdsl2ShdslnoNeighborPresent
     - hdsl2ShdslLocalPowerLoss

4.3.1  Line Topology

  An HDSL2/SHDSL Line consists of a minimum of two units - xtuC (the
  central termination unit) and an xtuR (the remote termination unit).
  The line may optionally support up to 8 repeater/regenerator units
  (xru) as shown in the figure below.









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   <-- Network Side                            Customer Side -->

   |</////////////////// HDSL2/SHDSL Span ////////////////////>|

           <~~~>       <~~~> HDSL2/SHDSL Segments  <~~~>

   +-------+   +-------+   +-------+       +-------+   +-------+
   +       C=1=N       C=1=N       C=..1..=N       C=1=N       +
   | xtuC  |   |  xru1 |   |  xru2 |       |  xru8 |   |  xtuR |
   +       C=2=N       C=2=N       C=..2..=N       C=2=N       +
   +-------+   +-------+   +-------+       +-------+   +-------+

   Key:  <////> HDSL2/SHDSL Span
         <~~~~> HDSL2/SHDSL Segment
         =1=    HDSL2/SHDSL wire-pair-1
         =2=    SHDSL optional wire-pair-2 (Not applicable to HDSL2)
         C      Customer Side Segment Endpoint (modem)
         N      Network Side Segment Endpoint (modem)


         Figure 2: General topology for an HDSL2/SHDSL Line

4.4.  Counters, Interval Buckets and Thresholds

  For SNR Margin, Loop Attenuation, ES, SES, CRC anomalies, LOSW, and
  UAS, there are event counters, current 15-minute and 0 to 96 15-
  minute history bucket(s) of "interval-counters", as well as current
  and 0 to 30 previous 1-day interval-counter(s).  Each current 15-
  minute event bucket has an associated threshold notification.

  Unlike RFC 2493 [22] and RFC 2662 [23], there is no representation in
  the MIB for invalid buckets.  In those cases where the data for an
  interval is suspect or known to be invalid, the agent MUST NOT report
  the interval.  If the current 15-minute event bucket is determined to
  be invalid, notifications based upon the value of the event bucket
  MUST NOT be generated.

  Not reporting an interval will result in holes in the associated
  table.  For example, the table, hdsl2Shdsl15MinIntervalTable, is
  indexed by { ifIndex, hdsl2ShdslInvIndex, hdsl2ShdslEndpointSide,
  hdsl2ShdslEndpointWirePair, hdsl2Shdsl15MinIntervalNumber}.  If
  interval 12 is determined to be invalid but intervals 11 and 13 are
  valid, a Get Next operation on the indices .1.1.1.1.11 would return
  indices .1.1.1.1.13.







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  There is no requirement for an agent to ensure a fixed relationship
  between the start of a fifteen minute interval and any wall clock;
  however some implementations may align the fifteen minute intervals
  with quarter hours.  Likewise, an implementation may choose to align
  one day intervals with the start of a day.

  Counters are not reset when an xU is reinitialized, only when the
  agent is reset or reinitialized (or under specific request outside
  the scope of this MIB).

4.5.  Profiles

  As a managed node can handle a large number of xUs, (e.g., hundreds
  or perhaps thousands of lines), provisioning every parameter on every
  xU may become burdensome.  Moreover, most lines are provisioned
  identically with the same set of parameters.  To simplify the
  provisioning process, this MIB makes use of profiles.  A profile is a
  set of parameters that can be shared by multiple lines using the same
  configuration.

  The following profiles are used in this MIB:

  o  Span Configuration Profiles - Span configuration profiles contain
     parameters for configuring HDSL2/SHDSL spans.  They are defined in
     the hdsl2ShdslSpanConfProfileTable.  Since span configuration
     parameters are only applicable for SHDSL, the support for span
     configuration profiles are optional for HDSL2 interfaces.

     Note that the configuration of the span dictates the behavior for
     each individual segment end point in the span.  If a different
     configuration is provisioned for any given segment end point
     within the span, the new configuration for this segment end point
     will override the span configuration for this segment end point
     only.

  o  Segment Endpoint Alarm Configuration Profiles - These profiles
     contain parameters for configuring alarm thresholds for
     HDSL2/SHDSL segment endpoints.  These profiles are defined in the
     hdsl2ShdslEndpointAlarmConfProfileTable.

     The index value for this profile is a locally-unique
     administratively assigned name for the profile having the textual
     convention `SnmpAdminString' (RFC 2571 [1]).

  One or more lines may be configured to share parameters of a single
  profile (e.g., hdsl2ShdslEndpointAlarmConfProfile = `silver') by
  setting its hdsl2ShdslEndpointAlarmConfProfile objects to the value
  of this profile.  If a change is made to the profile, all lines that



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  refer to it will be reconfigured to the changed parameters.  Before a
  profile can be deleted or taken out of service it must be first
  unreferenced from all associated lines.

  Implementations MUST provide a default profile whose name is `DEFVAL'
  for each profile type.  The values of the associated parameters will
  be vendor specific unless otherwise indicated in this document.
  Before a line's profiles have been set, these profiles will be
  automatically used by setting hdsl2ShdslEndpointAlarmConfProfile and
  hdsl2ShdslSpanConfProfile to `DEFVAL' where appropriate.  This
  default profile name, 'DEFVAL', is considered reserved in the context
  of profiles defined in this MIB.

  Profiles are created, assigned, and deleted dynamically using the
  profile name and profile row status in each of the four profile
  tables.

  Profile changes MUST take effect immediately.  These changes MAY
  result in a restart (hard reset or soft restart) of the units on the
  line.

4.6.  Notifications

  The ability to generate the SNMP notifications coldStart/WarmStart
  (per [21]) which are per agent (e.g., per Digital Subscriber Line
  Access Multiplexer, or DSLAM, in such a device), and linkUp/linkDown
  (per [21]) which are per interface (i.e., HDSL2/SHDSL line) is
  required.

  A linkDown notification MAY be generated whenever any of ES, SES, CRC
  Anomaly, LOSW, or UAS event occurs.  The corresponding linkUp
  notification MAY be sent when all link failure conditions are
  cleared.

  The notifications defined in this MIB are for initialization failure
  and for the threshold crossings associated with the following events:
  ES, SES, CRC Anomaly, LOSW, and UAS.  Each threshold has its own
  enable/threshold value.  When that value is 0, the notification is
  disabled.

  The hdsl2ShdslEndpointCurrStatus is a bitmask representing all
  outstanding error conditions associated with a particular Segment
  Endpoint.  Note that since status of remote endpoints is obtained via
  the EOC, this information may be unavailable for units that are
  unreachable via EOC during a line error condition.  Therefore, not
  all conditions may always be included in its current status.
  Notifications corresponding to the bit fields in this object are
  defined.



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  Two alarm conditions, SNR Margin Alarm and Loop Attenuation Alarm,
  are organized in a manner slightly different from that implied in the
  EOC specifications.  In the MIB, these alarm conditions are tied to
  the two thresholds hdsl2ShdslEndpointThreshSNRMargin and
  hdsl2ShdslEndpointThreshLoopAttenuation found in the
  hdsl2ShdslEndpointAlarmConfProfileTable.  In the EOC, the alarm
  conditions associated with these thresholds are per-unit.  In the
  MIB, these alarm conditions are per-endpoint.  For terminal units,
  this has no impact.  For repeaters, this implies an implementation
  variance where the agent in the terminal unit is responsible for
  detecting a threshold crossing.  As the reporting of a repeater
  detected alarm condition to the polling terminal unit occurs in the
  same EOC message as the reporting of the current SNR Margin and Loop
  Attenuation values, it is anticipated that this will have very little
  impact on agent implementation.

  A threshold notification occurs whenever the corresponding current
  15-minute interval error counter becomes equal to, or exceeds the
  threshold value.  One notification may be sent per interval per
  interface.  Since the current 15-minute counter is reset to 0 every
  15 minutes, and if the condition persists, the notification may recur
  as  often as every 15 minutes.  For example, to get a notification
  whenever a "loss of" event occurs (but at most once every 15
  minutes), set the corresponding threshold to 1.  The agent will
  generate a notification when the event originally occurs.

  Note that the Network Management System, or NMS, may receive a
  linkDown notification, as well, if enabled (via
  ifLinkUpDownTrapEnable [21]).  At the beginning of the next 15 minute
  interval, the counter is reset.  When the first second goes by and
  the event occurs, the current interval bucket will be 1, which equals
  the threshold, and the notification will be sent again.

  A hdsl2ShdslSpanInvalidNumRepeaters notification may be generated
  following completion of the discovery phase if the number of
  repeaters discovered on the line differs from the number of repeaters
  specified in hdsl2ShdslSpanConfNumRepeaters.  For those conditions
  where the number of provisioned repeaters is greater than those
  encountered during span discovery, all table entries associated with
  the nonexistent repeaters are to be discarded.  For those conditions
  where the number of provisioned repeaters is less than those
  encountered during span discovery, additional table entries are to be
  created using the default span configuration profile.








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5.  Conformance and Compliance

  For both HDSL2 and SHDSL lines, the following group(s) are mandatory:

     hdsl2ShdslSpanConfGroup
     hdsl2ShdslSpanStatusGroup
     hdsl2ShdslInventoryGroup
     hdsl2ShdslEndpointConfGroup
     hdsl2Shdsl15MinIntervalGroup
     hdsl2Shdsl1DayIntervalGroup
     hdsl2ShdslMaintenanceGroup
     hdsl2ShdslEndpointAlarmConfGroup
     hdsl2ShdslNotificationGroup

  For HDSL2 lines, the following group(s) are optional:

     hdsl2ShdslSpanConfProfileGroup
     hdsl2ShdslSpanShdslStatusGroup

6.  Definitions

HDSL2-SHDSL-LINE-MIB DEFINITIONS ::= BEGIN

IMPORTS
MODULE-IDENTITY,
OBJECT-TYPE,
Counter32,
Unsigned32,
Gauge32,
NOTIFICATION-TYPE,
Integer32,
transmission                  FROM SNMPv2-SMI
RowStatus,
TEXTUAL-CONVENTION            FROM SNMPv2-TC
ifIndex                       FROM IF-MIB
PerfCurrentCount,
PerfIntervalCount             FROM PerfHist-TC-MIB
SnmpAdminString               FROM SNMP-FRAMEWORK-MIB
MODULE-COMPLIANCE,
OBJECT-GROUP,
NOTIFICATION-GROUP            FROM SNMPv2-CONF;

hdsl2ShdslMIB MODULE-IDENTITY
   LAST-UPDATED "200205090000Z" -- May 9, 2002
   ORGANIZATION "ADSLMIB Working Group"
   CONTACT-INFO "WG-email:  [email protected]
              Info:      https://www1.ietf.org/mailman/listinfo/adslmib
              Chair:     Mike Sneed



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              Postal:    P.O. Box 37324
                         Raleigh NC 27627-7324
              Email:     [email protected]

              Co-editor: Bob Ray
                         PESA Switching Systems, Inc.
              Postal:    330-A Wynn Drive
                         Huntsville, AL 35805 USA
              Email:     [email protected]
              Phone:     +1 256 726 9200 ext. 142

              Co-editor: Rajesh Abbi
                         Alcatel USA
              Postal:    2912 Wake Forest Road
                         Raleigh, NC 27609-7860 USA

              Email:     [email protected]
              Phone:     +1 919 850 6194
             "

DESCRIPTION
    "This MIB module defines a collection of objects for managing
     HDSL2/SHDSL lines.  An agent may reside at either end of the
     line, however the MIB is designed to require no management
     communication between the modems beyond that inherent in the
     low-level EOC line protocol as defined in ANSI T1E1.4/2000-006
     (for HDSL2 lines), or in ITU G.991.2 (for SHDSL lines)."
REVISION "200205090000Z" -- May 9, 2002
DESCRIPTION "Initial version, published as RFC 3276."

::= { transmission 48 }

hdsl2ShdslMibObjects OBJECT IDENTIFIER ::= { hdsl2ShdslMIB 1 }

-- Textual Conventions used in this MIB
--

Hdsl2ShdslPerfCurrDayCount ::= TEXTUAL-CONVENTION
  STATUS    current
  DESCRIPTION
    "A gauge associated with interface performance measurements in
     a current 1-day (24 hour) measurement interval.

     The value of this gauge starts at zero at the beginning of an
     interval and is increased when associated events occur, until
     the end of the 1-day interval.  At that time the value of the
     gauge is stored in the previous 1-day history interval, as
     defined in a companion object of type



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     Hdsl2Shdsl1DayIntevalCount, and the current interval gauge
     is restarted at zero.

     In the case where the agent has no valid data available for
     this interval the corresponding object instance is not
     available and upon a retrieval request a corresponding error
     message shall be returned to indicate that this instance does
     not exist.  Please note that zero is a valid value."
  SYNTAX  Gauge32

Hdsl2Shdsl1DayIntervalCount ::= TEXTUAL-CONVENTION
  STATUS    current
  DESCRIPTION
    "A counter associated with interface performance measurements
     during the most previous 1-day (24 hour) measurement interval.
     The value of this gauge is equal to the value of the current
     day gauge, as defined in a companion object of type
     Hdsl2ShdslPerfCurrDayCount, at the end of its most recent
     interval.

     In the case where the agent has no valid data available for
     this interval the corresponding object instance is not
     available and upon a retrieval request a corresponding error
     message shall be returned to indicate that this instance does
     not exist."
  SYNTAX  Gauge32

Hdsl2ShdslPerfTimeElapsed ::= TEXTUAL-CONVENTION
  STATUS    current
  DESCRIPTION
    "The number of seconds that have elapsed since the beginning of
     the current measurement period.  If, for some reason, such as
     an adjustment in the system's time-of-day clock or the addition
     of a leap second, the current interval exceeds the maximum
     value, the agent will return the maximum value.

     For 15 minute intervals, the range is limited to (0..899).
     For 24 hour intervals, the range is limited to (0..86399)."
  SYNTAX    Unsigned32(0..86399)

Hdsl2ShdslPerfIntervalThreshold ::= TEXTUAL-CONVENTION
  STATUS    current
  DESCRIPTION
    "This convention defines a range of values that may be set in
     a fault threshold alarm control.  As the number of seconds in
     a 15-minute interval numbers at most 900, objects of this type
     may have a range of 0...900, where the value of 0 disables the
     alarm."



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  SYNTAX    Unsigned32(0..900)

Hdsl2ShdslUnitId ::= TEXTUAL-CONVENTION
  STATUS    current
  DESCRIPTION
    "This is the unique identification for all units in a
     HDSL2/SHDSL Span.  It is based on the EOC unit addressing
     scheme with reference to the xtuC."
  SYNTAX    INTEGER
          {
          xtuC(1),
          xtuR(2),
          xru1(3),
          xru2(4),
          xru3(5),
          xru4(6),
          xru5(7),
          xru6(8),
          xru7(9),
          xru8(10)
          }

Hdsl2ShdslUnitSide ::= TEXTUAL-CONVENTION
  STATUS    current
  DESCRIPTION
    "This is the referenced side of a HDSL2/SHDSL unit - Network
     or Customer side.  The side facing the Network is the Network
     side, while the side facing the Customer is the Customer side."
  SYNTAX    INTEGER
          {
          networkSide(1),
          customerSide(2)
          }

Hdsl2ShdslWirePair ::= TEXTUAL-CONVENTION
  STATUS    current
  DESCRIPTION
    "This is the referenced pair of wires in a HDSL2/SHDSL Segment.
     HDSL2 only supports a single pair (wirePair1), while SHDSL
     supports an optional second pair (wirePair2)."
  SYNTAX    INTEGER
          {
          wirePair1(1),
          wirePair2(2)
          }

Hdsl2ShdslTransmissionModeType ::= TEXTUAL-CONVENTION
  STATUS    current



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  DESCRIPTION
    "Contains the regional setting of the HDSL2/SHDSL span,
    represented as a bit-map of possible settings. The various
    bit positions are:

    Bit   Meaning      Description
    1     region 1     Indicates ITU-T G.991.2 Annex A.
    2     region 2     Indicates ITU-T G.991.2 Annex B."
  SYNTAX      BITS
          {
          region1(0),
          region2(1)
          }

Hdsl2ShdslClockReferenceType ::= TEXTUAL-CONVENTION
  STATUS    current
  DESCRIPTION
    "The various STU-C symbol clock references for the
    HDSL2/SHDSL span, represented as an enumeration."
  SYNTAX    INTEGER
         {
         localClk(1),          -- Mode-1 per G991.2
         networkClk(2),        -- Mode-2 per G991.2
         dataOrNetworkClk(3),  -- Mode-3a per G991.2
         dataClk(4)            -- Mode-3b per G991.2
         }

-- Span Configuration Group
--

hdsl2ShdslSpanConfTable OBJECT-TYPE
  SYNTAX     SEQUENCE OF Hdsl2ShdslSpanConfEntry
  MAX-ACCESS not-accessible
  STATUS     current
  DESCRIPTION
    "This table supports overall configuration of HDSL2/SHDSL
     Spans.  Entries in this table MUST be maintained in a
     persistent manner."
  ::= { hdsl2ShdslMibObjects 1 }

hdsl2ShdslSpanConfEntry OBJECT-TYPE
  SYNTAX      Hdsl2ShdslSpanConfEntry
  MAX-ACCESS  not-accessible
  STATUS      current
  DESCRIPTION
    "An entry in the hdsl2ShdslSpanConfTable.  Each entry
     represents the complete Span in a single HDSL2/SHDSL line.
     It is indexed by the ifIndex of the associated HDSL2/SHDSL



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     line."
  INDEX { ifIndex }
  ::= { hdsl2ShdslSpanConfTable 1 }

Hdsl2ShdslSpanConfEntry ::=
  SEQUENCE
  {
  hdsl2ShdslSpanConfNumRepeaters          Unsigned32,
  hdsl2ShdslSpanConfProfile               SnmpAdminString,
  hdsl2ShdslSpanConfAlarmProfile          SnmpAdminString
  }

  hdsl2ShdslSpanConfNumRepeaters OBJECT-TYPE
  SYNTAX      Unsigned32(0..8)
  UNITS       "repeaters"
  MAX-ACCESS  read-write
  STATUS      current
  DESCRIPTION
    "This object provisions the number of repeaters/regenerators
    in this HDSL2/SHDSL Span."
  ::= { hdsl2ShdslSpanConfEntry 1 }

hdsl2ShdslSpanConfProfile OBJECT-TYPE
  SYNTAX      SnmpAdminString (SIZE(1..32))
  MAX-ACCESS  read-write
  STATUS      current
  DESCRIPTION
    "This object is a pointer to a span configuration profile in
    the hdsl2ShdslSpanConfProfileTable, which applies to this span.
    The value of this object is the index of the referenced profile
    in the hdsl2ShdslSpanConfProfileTable.  Note that span
    configuration profiles are only applicable to SHDSL lines.

    HDSL2 lines MUST reference the default profile, 'DEFVAL'.
    By default, this object will have the value 'DEFVAL' (the index
    of the default profile).

    Any attempt to set this object to a value that is not the value
    of the index for an active entry in the profile table,
    hdsl2ShdslSpanConfProfileTable, MUST be rejected."
  ::= { hdsl2ShdslSpanConfEntry 2 }

hdsl2ShdslSpanConfAlarmProfile OBJECT-TYPE
  SYNTAX      SnmpAdminString (SIZE(1..32))
  MAX-ACCESS  read-write
  STATUS      current
  DESCRIPTION
    "This object is a pointer to an Alarm configuration profile in



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    the hdsl2ShdslEndpointAlarmConfProfileTable.  The value of this
    object is the index of the referenced profile in the
    hdsl2ShdslEndpointAlarmConfProfileTable.  The alarm threshold
    configuration in the referenced profile will be used by default
    for all segment endpoints in this span.  Individual endpoints
    may override this profile by explicitly specifying some other
    profile in the hdsl2ShdslEndpointConfTable.  By default, this
    object will have the value 'DEFVAL' (the index of the default
    profile).

    Any attempt to set this object to a value that is not the value
    of the index for an active entry in the profile table,
    hdsl2ShdslEndpointAlarmConfProfileTable, MUST be rejected."
  ::= { hdsl2ShdslSpanConfEntry 3 }

-- Span Status Group
--

hdsl2ShdslSpanStatusTable OBJECT-TYPE
  SYNTAX     SEQUENCE OF Hdsl2ShdslSpanStatusEntry
  MAX-ACCESS not-accessible
  STATUS     current
  DESCRIPTION
    "This table provides overall status information of
     HDSL2/SHDSL spans.  This table contains live data from
     equipment.  As such, it is NOT persistent."
  ::= { hdsl2ShdslMibObjects 2 }

hdsl2ShdslSpanStatusEntry OBJECT-TYPE
  SYNTAX      Hdsl2ShdslSpanStatusEntry
  MAX-ACCESS  not-accessible
  STATUS      current
  DESCRIPTION
    "An entry in the hdsl2ShdslSpanStatusTable.  Each entry
     represents the complete span in a single HDSL2/SHDSL line.
     It is indexed by the ifIndex of the associated HDSL2/SHDSL
     line."
  INDEX { ifIndex }
  ::= { hdsl2ShdslSpanStatusTable 1 }

Hdsl2ShdslSpanStatusEntry ::=
  SEQUENCE
  {
  hdsl2ShdslStatusNumAvailRepeaters        Unsigned32,
  hdsl2ShdslStatusMaxAttainableLineRate    Unsigned32,
  hdsl2ShdslStatusActualLineRate           Unsigned32,
  hdsl2ShdslStatusTransmissionModeCurrent
            Hdsl2ShdslTransmissionModeType



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  }

hdsl2ShdslStatusNumAvailRepeaters OBJECT-TYPE
  SYNTAX      Unsigned32(0..8)
  MAX-ACCESS  read-only
  STATUS      current
  DESCRIPTION
    "Contains the actual number of repeaters/regenerators
     discovered in this HDSL2/SHDSL span."
  ::= { hdsl2ShdslSpanStatusEntry 1 }

hdsl2ShdslStatusMaxAttainableLineRate OBJECT-TYPE
  SYNTAX      Unsigned32(0..4112000)
  UNITS       "bps"
  MAX-ACCESS  read-only
  STATUS      current
  DESCRIPTION
    "Contains the maximum attainable line rate in this HDSL2/SHDSL
     span.  This object provides the maximum rate the line is
     capable of achieving.  This is based upon measurements made
     during line probing."
  ::= { hdsl2ShdslSpanStatusEntry 2 }

hdsl2ShdslStatusActualLineRate OBJECT-TYPE
  SYNTAX      Unsigned32(0..4112000)
  UNITS       "bps"
  MAX-ACCESS  read-only
  STATUS      current
  DESCRIPTION
    "Contains the actual line rate in this HDSL2/SHDSL span.  This
    should equal ifSpeed."
  ::= { hdsl2ShdslSpanStatusEntry 3 }

hdsl2ShdslStatusTransmissionModeCurrent OBJECT-TYPE
  SYNTAX      Hdsl2ShdslTransmissionModeType
  MAX-ACCESS  read-only
  STATUS      current
  DESCRIPTION
    "Contains the current Power Spectral Density (PSD) regional
     setting of the HDSL2/SHDSL span."
  ::= { hdsl2ShdslSpanStatusEntry 4 }

-- Unit Inventory Group
--

hdsl2ShdslInventoryTable OBJECT-TYPE
  SYNTAX     SEQUENCE OF Hdsl2ShdslInventoryEntry
  MAX-ACCESS not-accessible



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  STATUS     current
  DESCRIPTION
    "This table supports retrieval of unit inventory information
     available via the EOC from units in a HDSL2/SHDSL line.

     Entries in this table are dynamically created during the
     line discovery process.  The life cycle for these entries
     is as follows:

        - xtu discovers a device, either a far-end xtu or an xru
        - an inventory table entry is created for the device
        - the line goes down for whatever reason
        - inventory table entries for unreachable devices are
          destroyed.

     As these entries are created/destroyed dynamically, they
     are NOT persistent."
  ::= { hdsl2ShdslMibObjects 3 }

hdsl2ShdslInventoryEntry OBJECT-TYPE
  SYNTAX      Hdsl2ShdslInventoryEntry
  MAX-ACCESS  not-accessible
  STATUS      current
  DESCRIPTION
    "An entry in the hdsl2ShdslInventoryTable.  Each entry
     represents inventory information for a single unit in a
     HDSL2/SHDSL line.  It is indexed by the ifIndex of the
     HDSL2/SHDSL line and the Hdsl2ShdslUnitId of the
     associated unit."
  INDEX { ifIndex, hdsl2ShdslInvIndex }
  ::= { hdsl2ShdslInventoryTable 1 }

Hdsl2ShdslInventoryEntry ::=
  SEQUENCE
  {
  hdsl2ShdslInvIndex                      Hdsl2ShdslUnitId,
  hdsl2ShdslInvVendorID                   OCTET STRING,
  hdsl2ShdslInvVendorModelNumber          OCTET STRING,
  hdsl2ShdslInvVendorSerialNumber         OCTET STRING,
  hdsl2ShdslInvVendorEOCSoftwareVersion   Integer32,
  hdsl2ShdslInvStandardVersion            Integer32,
  hdsl2ShdslInvVendorListNumber           OCTET STRING,
  hdsl2ShdslInvVendorIssueNumber          OCTET STRING,
  hdsl2ShdslInvVendorSoftwareVersion      OCTET STRING,
  hdsl2ShdslInvEquipmentCode              OCTET STRING,
  hdsl2ShdslInvVendorOther                OCTET STRING,
  hdsl2ShdslInvTransmissionModeCapability
                        Hdsl2ShdslTransmissionModeType



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  }

hdsl2ShdslInvIndex OBJECT-TYPE
  SYNTAX      Hdsl2ShdslUnitId
  MAX-ACCESS  not-accessible
  STATUS      current
  DESCRIPTION
     "Each entry in this table corresponds to a physical element
     in a HDSL2/SHDSL Span.  It is based on the EOC unit addressing
     scheme with reference to the xtuC."
  ::= { hdsl2ShdslInventoryEntry 1 }

hdsl2ShdslInvVendorID OBJECT-TYPE
  SYNTAX      OCTET STRING(SIZE(8))
  MAX-ACCESS  read-only
  STATUS      current
  DESCRIPTION
    "Vendor ID as reported in an Inventory Response message."
  ::= { hdsl2ShdslInventoryEntry 2 }

hdsl2ShdslInvVendorModelNumber OBJECT-TYPE
  SYNTAX      OCTET STRING(SIZE(12))
  MAX-ACCESS  read-only
  STATUS      current
  DESCRIPTION
    "Vendor model number as reported in an Inventory Response
     message."
  ::= { hdsl2ShdslInventoryEntry 3 }

hdsl2ShdslInvVendorSerialNumber OBJECT-TYPE
  SYNTAX      OCTET STRING(SIZE(12))
  MAX-ACCESS  read-only
  STATUS      current
  DESCRIPTION
    "Vendor serial number as reported in an Inventory Response
     message."
  ::= { hdsl2ShdslInventoryEntry 4 }

hdsl2ShdslInvVendorEOCSoftwareVersion OBJECT-TYPE
  SYNTAX      Integer32
  MAX-ACCESS  read-only
  STATUS      current
  DESCRIPTION
    "Vendor EOC version as reported in a Discovery Response
     message."
  ::= { hdsl2ShdslInventoryEntry 5 }

hdsl2ShdslInvStandardVersion OBJECT-TYPE



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  SYNTAX      Integer32
  MAX-ACCESS  read-only
  STATUS      current
  DESCRIPTION
    "Version of the HDSL2/SHDSL standard implemented, as reported
     in an Inventory Response message."
  ::= { hdsl2ShdslInventoryEntry 6 }

hdsl2ShdslInvVendorListNumber OBJECT-TYPE
  SYNTAX      OCTET STRING(SIZE(3))
  MAX-ACCESS  read-only
  STATUS      current
  DESCRIPTION
    "Vendor list number as reported in an Inventory Response
     message."
  ::= { hdsl2ShdslInventoryEntry 7 }

hdsl2ShdslInvVendorIssueNumber OBJECT-TYPE
  SYNTAX      OCTET STRING(SIZE(2))
  MAX-ACCESS  read-only
  STATUS      current
  DESCRIPTION
    "Vendor issue number as reported in an Inventory Response
     message."
  ::= { hdsl2ShdslInventoryEntry 8 }

hdsl2ShdslInvVendorSoftwareVersion OBJECT-TYPE
  SYNTAX      OCTET STRING(SIZE(6))
  MAX-ACCESS  read-only
  STATUS      current
  DESCRIPTION
    "Vendor software version as reported in an Inventory Response
     message."
  ::= { hdsl2ShdslInventoryEntry 9 }

hdsl2ShdslInvEquipmentCode OBJECT-TYPE
  SYNTAX      OCTET STRING(SIZE(10))
  MAX-ACCESS  read-only
  STATUS      current
  DESCRIPTION
    "Equipment code conforming to ANSI T1.213, Coded Identification
     of Equipment Entities."
  ::= { hdsl2ShdslInventoryEntry 10 }

hdsl2ShdslInvVendorOther OBJECT-TYPE
  SYNTAX      OCTET STRING(SIZE(12))
  MAX-ACCESS  read-only
  STATUS      current



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RFC 3276                  HDSL2-SHDSL-LINE MIB                  May 2002


  DESCRIPTION
    "Other vendor information as reported in an Inventory Response
     message."
  ::= { hdsl2ShdslInventoryEntry 11 }

hdsl2ShdslInvTransmissionModeCapability OBJECT-TYPE
  SYNTAX      Hdsl2ShdslTransmissionModeType
  MAX-ACCESS  read-only
  STATUS      current
  DESCRIPTION
    "Contains the transmission mode capability of the SHDSL unit."
  ::= { hdsl2ShdslInventoryEntry 12 }

-- Segment Endpoint Configuration Group
--

hdsl2ShdslEndpointConfTable OBJECT-TYPE
  SYNTAX      SEQUENCE OF Hdsl2ShdslEndpointConfEntry
  MAX-ACCESS  not-accessible
  STATUS      current
  DESCRIPTION
    "This table supports configuration parameters for segment
     endpoints in a HDSL2/SHDSL line.  As this table is indexed
     by ifIndex, it MUST be maintained in a persistent manner."
  ::= { hdsl2ShdslMibObjects 4 }

hdsl2ShdslEndpointConfEntry OBJECT-TYPE
  SYNTAX      Hdsl2ShdslEndpointConfEntry
  MAX-ACCESS  not-accessible
  STATUS      current
  DESCRIPTION
    "An entry in the hdsl2ShdslEndpointConfTable.  Each entry
     represents a single segment endpoint in a HDSL2/SHDSL line.
     It is indexed by the ifIndex of the HDSL2/SHDSL line, the
     UnitId of the associated unit, the side of the unit, and the
     wire-pair of the associated modem."
  INDEX { ifIndex, hdsl2ShdslInvIndex, hdsl2ShdslEndpointSide,
          hdsl2ShdslEndpointWirePair}
  ::= { hdsl2ShdslEndpointConfTable 1 }

Hdsl2ShdslEndpointConfEntry ::=
  SEQUENCE
  {
  hdsl2ShdslEndpointSide                   Hdsl2ShdslUnitSide,
  hdsl2ShdslEndpointWirePair               Hdsl2ShdslWirePair,
  hdsl2ShdslEndpointAlarmConfProfile       SnmpAdminString
  }




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RFC 3276                  HDSL2-SHDSL-LINE MIB                  May 2002


hdsl2ShdslEndpointSide OBJECT-TYPE
  SYNTAX      Hdsl2ShdslUnitSide
  MAX-ACCESS  not-accessible
  STATUS      current
  DESCRIPTION
    "The side of the unit associated with this segment endpoint -
     Network/Customer side - as per the Hdsl2ShdslUnitSide textual
     convention."
  ::= { hdsl2ShdslEndpointConfEntry 1 }

hdsl2ShdslEndpointWirePair OBJECT-TYPE
  SYNTAX      Hdsl2ShdslWirePair
  MAX-ACCESS  not-accessible
  STATUS      current
  DESCRIPTION
    "The wire-pair of the modem associated with this segment
     endpoint as per the Hdsl2ShdslWirePair textual convention."
  ::= { hdsl2ShdslEndpointConfEntry 2 }

hdsl2ShdslEndpointAlarmConfProfile OBJECT-TYPE
  SYNTAX      SnmpAdminString (SIZE(0..32))
  MAX-ACCESS  read-write
  STATUS      current
  DESCRIPTION
    "This object configures the alarm threshold values to be used
     for this segment endpoint.  The values are obtained from the
     alarm configuration profile referenced by this object.  The
     value of this object is the index of the referenced profile in
     the hdsl2ShdslEndpointAlarmConfProfileTable, or NULL (a zero-
     length SnmpAdminString).  If the value is a zero-length
     SnmpAdminString, the endpoint uses the default Alarm
     Configuration Profile for the associated span as per the
     hdsl2ShdslSpanConfAlarmProfile object in the
     hdsl2ShdslSpanConfTable.  The default value of this object is
     a zero-length SnmpAdminString.

     Any attempt to set this object to a value that is not the value
     of the index for an active entry in the profile table,
     hdsl2ShdslEndpointAlarmConfProfileTable, MUST be rejected."
  ::= { hdsl2ShdslEndpointConfEntry 3 }

-- Segment Endpoint Current Status/Performance Group
--

hdsl2ShdslEndpointCurrTable OBJECT-TYPE
  SYNTAX      SEQUENCE OF Hdsl2ShdslEndpointCurrEntry
  MAX-ACCESS  not-accessible
  STATUS      current



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RFC 3276                  HDSL2-SHDSL-LINE MIB                  May 2002


  DESCRIPTION
    "This table contains current status and performance information
     for segment endpoints in HDSL2/SHDSL Lines.  As with other
     tables in this MIB indexed by ifIndex, entries in this table
     MUST be maintained in a persistent manner."
  ::= { hdsl2ShdslMibObjects 5 }

hdsl2ShdslEndpointCurrEntry OBJECT-TYPE
  SYNTAX      Hdsl2ShdslEndpointCurrEntry
  MAX-ACCESS  not-accessible
  STATUS      current
  DESCRIPTION
    "An entry in the hdsl2ShdslEndpointCurrTable.  Each entry
    contains status and performance information relating to a
    single segment endpoint.  It is indexed by the ifIndex of the
    HDSL2/SHDSL line, the UnitId of the associated unit, the side
    of the unit, and the wire-pair of the associated modem."
  INDEX { ifIndex, hdsl2ShdslInvIndex, hdsl2ShdslEndpointSide,
          hdsl2ShdslEndpointWirePair }
  ::= { hdsl2ShdslEndpointCurrTable 1 }

Hdsl2ShdslEndpointCurrEntry ::=
  SEQUENCE
  {
  hdsl2ShdslEndpointCurrAtn                Integer32,
  hdsl2ShdslEndpointCurrSnrMgn             Integer32,
  hdsl2ShdslEndpointCurrStatus             BITS,
  hdsl2ShdslEndpointES                     Counter32,
  hdsl2ShdslEndpointSES                    Counter32,
  hdsl2ShdslEndpointCRCanomalies           Counter32,
  hdsl2ShdslEndpointLOSWS                  Counter32,
  hdsl2ShdslEndpointUAS                    Counter32,
  hdsl2ShdslEndpointCurr15MinTimeElapsed
                            Hdsl2ShdslPerfTimeElapsed,
  hdsl2ShdslEndpointCurr15MinES            PerfCurrentCount,
  hdsl2ShdslEndpointCurr15MinSES           PerfCurrentCount,
  hdsl2ShdslEndpointCurr15MinCRCanomalies  PerfCurrentCount,
  hdsl2ShdslEndpointCurr15MinLOSWS         PerfCurrentCount,
  hdsl2ShdslEndpointCurr15MinUAS           PerfCurrentCount,
  hdsl2ShdslEndpointCurr1DayTimeElapsed
                            Hdsl2ShdslPerfTimeElapsed,
  hdsl2ShdslEndpointCurr1DayES
                            Hdsl2ShdslPerfCurrDayCount,
  hdsl2ShdslEndpointCurr1DaySES
                            Hdsl2ShdslPerfCurrDayCount,
  hdsl2ShdslEndpointCurr1DayCRCanomalies
                            Hdsl2ShdslPerfCurrDayCount,
  hdsl2ShdslEndpointCurr1DayLOSWS



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RFC 3276                  HDSL2-SHDSL-LINE MIB                  May 2002


                            Hdsl2ShdslPerfCurrDayCount,
  hdsl2ShdslEndpointCurr1DayUAS
                            Hdsl2ShdslPerfCurrDayCount
  }

hdsl2ShdslEndpointCurrAtn OBJECT-TYPE
  SYNTAX      Integer32(-127..128)
  UNITS       "dB"
  MAX-ACCESS  read-only
  STATUS      current
  DESCRIPTION
    "The current loop attenuation for this endpoint as reported in
     a Network or Customer Side Performance Status message."
  REFERENCE   "HDSL2 Section 7.5.3.7; SHDSL Section 9.5.5.7"
  ::= { hdsl2ShdslEndpointCurrEntry 1 }

hdsl2ShdslEndpointCurrSnrMgn OBJECT-TYPE
  SYNTAX      Integer32(-127..128)
  UNITS       "dB"
  MAX-ACCESS  read-only
  STATUS      current
  DESCRIPTION
    "The current SNR margin for this endpoint as reported in a
     Status Response/SNR message."
  REFERENCE   "HDSL2 Section 7.5.3.7; SHDSL Section 9.5.5.7"
  ::= { hdsl2ShdslEndpointCurrEntry 2 }

hdsl2ShdslEndpointCurrStatus OBJECT-TYPE
  SYNTAX      BITS
              {
              noDefect(0),
              powerBackoff(1),
              deviceFault(2),
              dcContinuityFault(3),
              snrMarginAlarm(4),
              loopAttenuationAlarm(5),
              loswFailureAlarm(6),
              configInitFailure(7),
              protocolInitFailure(8),
              noNeighborPresent(9),
              loopbackActive(10)
              }
  MAX-ACCESS  read-only
  STATUS      current
  DESCRIPTION
    "Contains the current state of the endpoint.  This is a
    bitmap of possible conditions. The various bit positions
    are:



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RFC 3276                  HDSL2-SHDSL-LINE MIB                  May 2002


    noDefect               There no defects on the line.

    powerBackoff           Indicates enhanced Power Backoff.

    deviceFault            Indicates a vendor-dependent
                           diagnostic or self-test fault
                           has been detected.

    dcContinuityFault      Indicates vendor-dependent
                           conditions that interfere with
                           span powering such as short and
                           open circuits.

    snrMarginAlarm         Indicates that the SNR margin
                           has dropped below the alarm threshold.

    loopAttenuationAlarm   Indicates that the loop attenuation
                           exceeds the alarm threshold.

    loswFailureAlarm       Indicates a forward LOSW alarm.

    configInitFailure      Endpoint failure during initialization
                           due to paired endpoint not able to
                           support requested configuration.

    protocolInitFailure    Endpoint failure during initialization
                           due to incompatible protocol used by
                           the paired endpoint.

    noNeighborPresent      Endpoint failure during initialization
                           due to no activation sequence detected
                           from paired endpoint.

    loopbackActive         A loopback is currently active at this
                           Segment Endpoint.

    This is intended to supplement ifOperStatus.  Note that there
    is a 1-1 relationship between the status bits defined in this
    object and the notification thresholds defined elsewhere in
    this MIB."
  REFERENCE   "HDSL2 Section 7.5.3.7; SHDSL Section 9.5.5.7"
  ::= { hdsl2ShdslEndpointCurrEntry 3 }

hdsl2ShdslEndpointES OBJECT-TYPE
  SYNTAX      Counter32
  UNITS       "seconds"
  MAX-ACCESS  read-only
  STATUS      current



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RFC 3276                  HDSL2-SHDSL-LINE MIB                  May 2002


  DESCRIPTION
    "Count of Errored Seconds (ES) on this endpoint since the xU
     was last restarted."
  REFERENCE   "HDSL2 Section 7.5.3.7; SHDSL Section 9.5.5.7"
  ::= { hdsl2ShdslEndpointCurrEntry 4 }

hdsl2ShdslEndpointSES OBJECT-TYPE
  SYNTAX       Counter32
  UNITS        "seconds"
  MAX-ACCESS   read-only
  STATUS       current
  DESCRIPTION
    "Count of Severely Errored Seconds (SES) on this endpoint
     since the xU was last restarted."
  REFERENCE   "HDSL2 Section 7.5.3.7; SHDSL Section 9.5.5.7"
  ::= { hdsl2ShdslEndpointCurrEntry 5 }

hdsl2ShdslEndpointCRCanomalies OBJECT-TYPE
  SYNTAX       Counter32
  UNITS        "detected CRC Anomalies"
  MAX-ACCESS   read-only
  STATUS       current
  DESCRIPTION
    "Count of CRC anomalies on this endpoint since the xU was
     last restarted."
  REFERENCE   "HDSL2 Section 7.5.3.7; SHDSL Section 9.5.5.7"
  ::= { hdsl2ShdslEndpointCurrEntry 6 }

hdsl2ShdslEndpointLOSWS OBJECT-TYPE
  SYNTAX       Counter32
  UNITS        "seconds"
  MAX-ACCESS   read-only
  STATUS       current
  DESCRIPTION
    "Count of Loss of Sync Word (LOSW) Seconds on this endpoint
     since the xU was last restarted."
  REFERENCE   "HDSL2 Section 7.5.3.7; SHDSL Section 9.5.5.7"
  ::= { hdsl2ShdslEndpointCurrEntry 7 }

hdsl2ShdslEndpointUAS OBJECT-TYPE
  SYNTAX       Counter32
  UNITS        "seconds"
  MAX-ACCESS   read-only
  STATUS       current
  DESCRIPTION
    "Count of Unavailable Seconds (UAS) on this endpoint since
     the xU was last restarted."
  REFERENCE   "HDSL2 Section 7.5.3.7; SHDSL Section 9.5.5.7"



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  ::= { hdsl2ShdslEndpointCurrEntry 8 }

hdsl2ShdslEndpointCurr15MinTimeElapsed OBJECT-TYPE
  SYNTAX       Hdsl2ShdslPerfTimeElapsed
  UNITS        "seconds"
  MAX-ACCESS   read-only
  STATUS       current
  DESCRIPTION
    "Total elapsed seconds in the current 15-minute interval."
  ::= { hdsl2ShdslEndpointCurrEntry 9 }

hdsl2ShdslEndpointCurr15MinES OBJECT-TYPE
  SYNTAX       PerfCurrentCount
  UNITS        "seconds"
  MAX-ACCESS   read-only
  STATUS       current
  DESCRIPTION
    "Count of Errored Seconds (ES) in the current 15-minute
     interval."
  REFERENCE   "HDSL2 Section 7.5.3.7; SHDSL Section 9.5.5.7"
  ::= { hdsl2ShdslEndpointCurrEntry 10 }

hdsl2ShdslEndpointCurr15MinSES OBJECT-TYPE
  SYNTAX       PerfCurrentCount
  UNITS        "seconds"
  MAX-ACCESS   read-only
  STATUS       current
  DESCRIPTION
    "Count of Severely Errored Seconds (SES) in the current
     15-minute interval."
  REFERENCE   "HDSL2 Section 7.5.3.7; SHDSL Section 9.5.5.7"
  ::= { hdsl2ShdslEndpointCurrEntry 11 }

hdsl2ShdslEndpointCurr15MinCRCanomalies OBJECT-TYPE
  SYNTAX       PerfCurrentCount
  UNITS        "detected CRC Anomalies"
  MAX-ACCESS   read-only
  STATUS       current
  DESCRIPTION
    "Count of CRC anomalies in the current 15-minute interval."
  REFERENCE   "HDSL2 Section 7.5.3.7; SHDSL Section 9.5.5.7"
  ::= { hdsl2ShdslEndpointCurrEntry 12 }

hdsl2ShdslEndpointCurr15MinLOSWS OBJECT-TYPE
  SYNTAX       PerfCurrentCount
  UNITS        "seconds"
  MAX-ACCESS   read-only
  STATUS       current



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  DESCRIPTION
    "Count of Loss of Sync Word (LOSW) Seconds in the current
     15-minute interval."
  REFERENCE   "HDSL2 Section 7.5.3.7; SHDSL Section 9.5.5.7"
  ::= { hdsl2ShdslEndpointCurrEntry 13 }

hdsl2ShdslEndpointCurr15MinUAS OBJECT-TYPE
  SYNTAX       PerfCurrentCount
  UNITS        "seconds"
  MAX-ACCESS   read-only
  STATUS       current
  DESCRIPTION
    "Count of Unavailable Seconds (UAS) in the current 15-minute
     interval."
  REFERENCE   "HDSL2 Section 7.5.3.7; SHDSL Section 9.5.5.7"
  ::= { hdsl2ShdslEndpointCurrEntry 14 }

hdsl2ShdslEndpointCurr1DayTimeElapsed OBJECT-TYPE
  SYNTAX       Hdsl2ShdslPerfTimeElapsed
  UNITS        "seconds"
  MAX-ACCESS   read-only
  STATUS       current
  DESCRIPTION
    "Number of seconds that have elapsed since the beginning of
     the current 1-day interval."
  ::= { hdsl2ShdslEndpointCurrEntry 15 }

hdsl2ShdslEndpointCurr1DayES OBJECT-TYPE
  SYNTAX       Hdsl2ShdslPerfCurrDayCount
  UNITS        "seconds"
  MAX-ACCESS   read-only
  STATUS       current
  DESCRIPTION
    "Count of Errored Seconds (ES) during the current day as
     measured by hdsl2ShdslEndpointCurr1DayTimeElapsed."
  REFERENCE   "HDSL2 Section 7.5.3.7; SHDSL Section 9.5.5.7"
  ::= { hdsl2ShdslEndpointCurrEntry 16 }

hdsl2ShdslEndpointCurr1DaySES OBJECT-TYPE
  SYNTAX       Hdsl2ShdslPerfCurrDayCount
  UNITS        "seconds"
  MAX-ACCESS   read-only
  STATUS       current
  DESCRIPTION
    "Count of Severely Errored Seconds (SES) during the current
     day as measured by hdsl2ShdslEndpointCurr1DayTimeElapsed."
  REFERENCE   "HDSL2 Section 7.5.3.7; SHDSL Section 9.5.5.7"
  ::= { hdsl2ShdslEndpointCurrEntry 17 }



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RFC 3276                  HDSL2-SHDSL-LINE MIB                  May 2002


hdsl2ShdslEndpointCurr1DayCRCanomalies OBJECT-TYPE
  SYNTAX       Hdsl2ShdslPerfCurrDayCount
  UNITS        "detected CRC Anomalies"
  MAX-ACCESS   read-only
  STATUS       current
  DESCRIPTION
    "Count of CRC anomalies during the current day as measured
     by hdsl2ShdslEndpointCurr1DayTimeElapsed."
  REFERENCE   "HDSL2 Section 7.5.3.7; SHDSL Section 9.5.5.7"
  ::= { hdsl2ShdslEndpointCurrEntry 18 }

hdsl2ShdslEndpointCurr1DayLOSWS OBJECT-TYPE
  SYNTAX       Hdsl2ShdslPerfCurrDayCount
  UNITS        "seconds"
  MAX-ACCESS   read-only
  STATUS       current
  DESCRIPTION
    "Count of Loss of Sync Word (LOSW) Seconds during the current
     day as measured by hdsl2ShdslEndpointCurr1DayTimeElapsed."
  REFERENCE   "HDSL2 Section 7.5.3.7; SHDSL Section 9.5.5.7"
  ::= { hdsl2ShdslEndpointCurrEntry 19 }

hdsl2ShdslEndpointCurr1DayUAS OBJECT-TYPE
  SYNTAX       Hdsl2ShdslPerfCurrDayCount
  UNITS        "seconds"
  MAX-ACCESS   read-only
  STATUS       current
  DESCRIPTION
    "Count of Unavailable Seconds (UAS) during the current day as
     measured by hdsl2ShdslEndpointCurr1DayTimeElapsed."
  REFERENCE   "HDSL2 Section 7.5.3.7; SHDSL Section 9.5.5.7"
  ::= { hdsl2ShdslEndpointCurrEntry 20 }

-- Segment Endpoint 15-Minute Interval Status/Performance Group
--

hdsl2Shdsl15MinIntervalTable OBJECT-TYPE
  SYNTAX      SEQUENCE OF Hdsl2Shdsl15MinIntervalEntry
  MAX-ACCESS  not-accessible
  STATUS      current
  DESCRIPTION
    "This table provides one row for each HDSL2/SHDSL endpoint
     performance data collection interval.  This table contains
     live data from equipment.  As such, it is NOT persistent."
  ::= { hdsl2ShdslMibObjects 6 }

hdsl2Shdsl15MinIntervalEntry OBJECT-TYPE
  SYNTAX      Hdsl2Shdsl15MinIntervalEntry



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RFC 3276                  HDSL2-SHDSL-LINE MIB                  May 2002


  MAX-ACCESS  not-accessible
  STATUS      current
  DESCRIPTION
    "An entry in the hdsl2Shdsl15MinIntervalTable."
  INDEX { ifIndex, hdsl2ShdslInvIndex, hdsl2ShdslEndpointSide,
          hdsl2ShdslEndpointWirePair, hdsl2Shdsl15MinIntervalNumber}
  ::= { hdsl2Shdsl15MinIntervalTable 1 }

Hdsl2Shdsl15MinIntervalEntry ::=
  SEQUENCE
  {
  hdsl2Shdsl15MinIntervalNumber         Unsigned32,
  hdsl2Shdsl15MinIntervalES             PerfIntervalCount,
  hdsl2Shdsl15MinIntervalSES            PerfIntervalCount,
  hdsl2Shdsl15MinIntervalCRCanomalies   PerfIntervalCount,
  hdsl2Shdsl15MinIntervalLOSWS          PerfIntervalCount,
  hdsl2Shdsl15MinIntervalUAS            PerfIntervalCount
  }

hdsl2Shdsl15MinIntervalNumber OBJECT-TYPE
  SYNTAX      Unsigned32(1..96)
  MAX-ACCESS  not-accessible
  STATUS      current
  DESCRIPTION
    "Performance Data Interval number. 1 is the the most recent
     previous interval; interval 96 is 24 hours ago. Intervals
     2..96 are optional."
  ::= { hdsl2Shdsl15MinIntervalEntry 1 }

hdsl2Shdsl15MinIntervalES OBJECT-TYPE
  SYNTAX      PerfIntervalCount
  UNITS       "seconds"
  MAX-ACCESS  read-only
  STATUS      current
  DESCRIPTION
    "Count of Errored Seconds (ES) during the interval."
  REFERENCE   "HDSL2 Section 7.5.3.7; SHDSL Section 9.5.5.7"
  ::= { hdsl2Shdsl15MinIntervalEntry 2 }

hdsl2Shdsl15MinIntervalSES OBJECT-TYPE
  SYNTAX      PerfIntervalCount
  UNITS       "seconds"
  MAX-ACCESS  read-only
  STATUS      current
  DESCRIPTION
    "Count of Severely Errored Seconds (SES) during the interval."
  REFERENCE   "HDSL2 Section 7.5.3.7; SHDSL Section 9.5.5.7"
  ::= { hdsl2Shdsl15MinIntervalEntry 3 }



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RFC 3276                  HDSL2-SHDSL-LINE MIB                  May 2002


hdsl2Shdsl15MinIntervalCRCanomalies OBJECT-TYPE
  SYNTAX      PerfIntervalCount
  UNITS       "detected CRC Anomalies"
  MAX-ACCESS  read-only
  STATUS      current
  DESCRIPTION
    "Count of CRC anomalies during the interval."
  REFERENCE   "HDSL2 Section 7.5.3.7; SHDSL Section 9.5.5.7"
  ::= { hdsl2Shdsl15MinIntervalEntry 4 }

hdsl2Shdsl15MinIntervalLOSWS OBJECT-TYPE
  SYNTAX      PerfIntervalCount
  UNITS       "seconds"
  MAX-ACCESS  read-only
  STATUS      current
  DESCRIPTION
    "Count of Loss of Sync Word (LOSW) Seconds during the
     interval."
  REFERENCE   "HDSL2 Section 7.5.3.7; SHDSL Section 9.5.5.7"
  ::= { hdsl2Shdsl15MinIntervalEntry 5 }

hdsl2Shdsl15MinIntervalUAS OBJECT-TYPE
  SYNTAX      PerfIntervalCount
  UNITS       "seconds"
  MAX-ACCESS  read-only
  STATUS      current
  DESCRIPTION
    "Count of Unavailable Seconds (UAS) during the interval."
  REFERENCE   "HDSL2 Section 7.5.3.7; SHDSL Section 9.5.5.7"
  ::= { hdsl2Shdsl15MinIntervalEntry 6 }

-- Segment Endpoint 1-Day Interval Status/Performance Group
--

hdsl2Shdsl1DayIntervalTable OBJECT-TYPE
  SYNTAX      SEQUENCE OF Hdsl2Shdsl1DayIntervalEntry
  MAX-ACCESS  not-accessible
  STATUS      current
  DESCRIPTION
    "This table provides one row for each HDSL2/SHDSL endpoint
     performance data collection interval.  This table contains
     live data from equipment.  As such, it is NOT persistent."
  ::= { hdsl2ShdslMibObjects 7 }

hdsl2Shdsl1DayIntervalEntry OBJECT-TYPE
  SYNTAX      Hdsl2Shdsl1DayIntervalEntry
  MAX-ACCESS  not-accessible
  STATUS      current



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RFC 3276                  HDSL2-SHDSL-LINE MIB                  May 2002


  DESCRIPTION
    "An entry in the hdsl2Shdsl1DayIntervalTable."
  INDEX { ifIndex, hdsl2ShdslInvIndex, hdsl2ShdslEndpointSide,
          hdsl2ShdslEndpointWirePair, hdsl2Shdsl1DayIntervalNumber }
  ::= { hdsl2Shdsl1DayIntervalTable 1 }

Hdsl2Shdsl1DayIntervalEntry ::=
  SEQUENCE
  {
  hdsl2Shdsl1DayIntervalNumber         Unsigned32,
  hdsl2Shdsl1DayIntervalMoniSecs       Hdsl2ShdslPerfTimeElapsed,
  hdsl2Shdsl1DayIntervalES             Hdsl2Shdsl1DayIntervalCount,
  hdsl2Shdsl1DayIntervalSES            Hdsl2Shdsl1DayIntervalCount,
  hdsl2Shdsl1DayIntervalCRCanomalies   Hdsl2Shdsl1DayIntervalCount,
  hdsl2Shdsl1DayIntervalLOSWS          Hdsl2Shdsl1DayIntervalCount,
  hdsl2Shdsl1DayIntervalUAS            Hdsl2Shdsl1DayIntervalCount
  }

hdsl2Shdsl1DayIntervalNumber OBJECT-TYPE
  SYNTAX      Unsigned32(1..30)
  MAX-ACCESS  not-accessible
  STATUS      current
  DESCRIPTION
    "History Data Interval number. Interval 1 is the the most
     recent previous day; interval 30 is 30 days ago. Intervals
     2..30 are optional."
  ::= { hdsl2Shdsl1DayIntervalEntry 1 }

hdsl2Shdsl1DayIntervalMoniSecs OBJECT-TYPE
  SYNTAX       Hdsl2ShdslPerfTimeElapsed
  UNITS        "seconds"
  MAX-ACCESS   read-only
  STATUS       current
  DESCRIPTION
    "The amount of time in the 1-day interval over which the
     performance monitoring information is actually counted.
     This value will be the same as the interval duration except
     in a situation where performance monitoring data could not
     be collected for any reason."
  ::= { hdsl2Shdsl1DayIntervalEntry 2 }

hdsl2Shdsl1DayIntervalES OBJECT-TYPE
  SYNTAX       Hdsl2Shdsl1DayIntervalCount
  UNITS        "seconds"
  MAX-ACCESS   read-only
  STATUS       current
  DESCRIPTION
    "Count of Errored Seconds (ES) during the 1-day interval as



Ray & Abbi                  Standards Track                    [Page 36]

RFC 3276                  HDSL2-SHDSL-LINE MIB                  May 2002


     measured by hdsl2Shdsl1DayIntervalMoniSecs."
  REFERENCE   "HDSL2 Section 7.5.3.7; SHDSL Section 9.5.5.7"
  ::= { hdsl2Shdsl1DayIntervalEntry 3 }

hdsl2Shdsl1DayIntervalSES OBJECT-TYPE
  SYNTAX       Hdsl2Shdsl1DayIntervalCount
  UNITS        "seconds"
  MAX-ACCESS   read-only
  STATUS       current
  DESCRIPTION
    "Count of Severely Errored Seconds (SES) during the 1-day
     interval as measured by hdsl2Shdsl1DayIntervalMoniSecs."
  REFERENCE   "HDSL2 Section 7.5.3.7; SHDSL Section 9.5.5.7"
  ::= { hdsl2Shdsl1DayIntervalEntry 4 }

hdsl2Shdsl1DayIntervalCRCanomalies OBJECT-TYPE
  SYNTAX       Hdsl2Shdsl1DayIntervalCount
  UNITS        "detected CRC Anomalies"
  MAX-ACCESS   read-only
  STATUS       current
  DESCRIPTION
    "Count of CRC anomalies during the 1-day interval as
     measured by hdsl2Shdsl1DayIntervalMoniSecs."
  REFERENCE   "HDSL2 Section 7.5.3.7; SHDSL Section 9.5.5.7"
  ::= { hdsl2Shdsl1DayIntervalEntry 5 }

hdsl2Shdsl1DayIntervalLOSWS OBJECT-TYPE
  SYNTAX       Hdsl2Shdsl1DayIntervalCount
  UNITS        "seconds"
  MAX-ACCESS   read-only
  STATUS       current
  DESCRIPTION
    "Count of Loss of Sync Word (LOSW) Seconds during the 1-day
     interval as measured by hdsl2Shdsl1DayIntervalMoniSecs."
  REFERENCE   "HDSL2 Section 7.5.3.7; SHDSL Section 9.5.5.7"
  ::= { hdsl2Shdsl1DayIntervalEntry 6 }

hdsl2Shdsl1DayIntervalUAS OBJECT-TYPE
  SYNTAX       Hdsl2Shdsl1DayIntervalCount
  UNITS        "seconds"
  MAX-ACCESS   read-only
  STATUS       current
  DESCRIPTION
    "Count of Unavailable Seconds (UAS) during the 1-day interval
     as measured by hdsl2Shdsl1DayIntervalMoniSecs."
  REFERENCE   "HDSL2 Section 7.5.3.7; SHDSL Section 9.5.5.7"
  ::= { hdsl2Shdsl1DayIntervalEntry 7 }




Ray & Abbi                  Standards Track                    [Page 37]

RFC 3276                  HDSL2-SHDSL-LINE MIB                  May 2002


-- Maintenance Group
--

hdsl2ShdslEndpointMaintTable OBJECT-TYPE
  SYNTAX      SEQUENCE OF Hdsl2ShdslEndpointMaintEntry
  MAX-ACCESS  not-accessible
  STATUS      current
  DESCRIPTION
    "This table supports maintenance operations (eg. loopbacks)
     to be performed on HDSL2/SHDSL segment endpoints.  This table
     contains live data from equipment.  As such, it is NOT
     persistent."
  ::= { hdsl2ShdslMibObjects 8 }

hdsl2ShdslEndpointMaintEntry OBJECT-TYPE
  SYNTAX      Hdsl2ShdslEndpointMaintEntry
  MAX-ACCESS  not-accessible
  STATUS      current
  DESCRIPTION
    "An entry in the hdsl2ShdslEndpointMaintTable.  Each entry
     corresponds to a single segment endpoint, and is indexed by the
     ifIndex of the HDSL2/SHDSL line, the UnitId of the associated
     unit and the side of the unit."
  INDEX { ifIndex, hdsl2ShdslInvIndex, hdsl2ShdslEndpointSide }
  ::= { hdsl2ShdslEndpointMaintTable 1 }

Hdsl2ShdslEndpointMaintEntry ::=
  SEQUENCE
  {
  hdsl2ShdslMaintLoopbackConfig      INTEGER,
  hdsl2ShdslMaintTipRingReversal     INTEGER,
  hdsl2ShdslMaintPowerBackOff        INTEGER,
  hdsl2ShdslMaintSoftRestart         INTEGER
  }

hdsl2ShdslMaintLoopbackConfig OBJECT-TYPE
  SYNTAX      INTEGER
              {
              noLoopback(1),
              normalLoopback(2),
              specialLoopback(3)
              }
  MAX-ACCESS  read-write
  STATUS      current
  DESCRIPTION
    "This object controls configuration of loopbacks for the
     associated segment endpoint.  The status of the loopback
     is obtained via the hdsl2ShdslEndpointCurrStatus object."



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RFC 3276                  HDSL2-SHDSL-LINE MIB                  May 2002


  ::= { hdsl2ShdslEndpointMaintEntry 1 }

hdsl2ShdslMaintTipRingReversal OBJECT-TYPE
  SYNTAX      INTEGER
              {
              normal(1),
              reversed(2)
              }
  MAX-ACCESS  read-only
  STATUS      current
  DESCRIPTION
    "This object indicates the state of the tip/ring pair at the
     associated segment endpoint."
  ::= { hdsl2ShdslEndpointMaintEntry 2 }

hdsl2ShdslMaintPowerBackOff OBJECT-TYPE
  SYNTAX      INTEGER
              {
              default(1),
              enhanced(2)
              }
  MAX-ACCESS  read-write
  STATUS      current
  DESCRIPTION
    "This object configures the receiver at the associated
     segment endpoint to operate in default or enhanced power
     backoff mode."
  ::= { hdsl2ShdslEndpointMaintEntry 3 }

hdsl2ShdslMaintSoftRestart OBJECT-TYPE
  SYNTAX      INTEGER
              {
              ready(1),
              restart(2)
              }
  MAX-ACCESS  read-write
  STATUS      current
  DESCRIPTION
    "This object enables the manager to trigger a soft restart
     of the modem at the associated segment endpoint.  The manager
     may only set this object to the 'restart(2)' value, which
     initiates a restart.  The agent will perform a restart after
     approximately 5 seconds.  Following the 5 second period, the
     agent will restore the object to the 'ready(1)' state."
  ::= { hdsl2ShdslEndpointMaintEntry 4 }

hdsl2ShdslUnitMaintTable OBJECT-TYPE
  SYNTAX      SEQUENCE OF Hdsl2ShdslUnitMaintEntry



Ray & Abbi                  Standards Track                    [Page 39]

RFC 3276                  HDSL2-SHDSL-LINE MIB                  May 2002


  MAX-ACCESS  not-accessible
  STATUS      current
  DESCRIPTION
    "This table supports maintenance operations for units in a
     HDSL2/SHDSL line.  Entries in this table MUST be maintained
     in a persistent manner."
  ::= { hdsl2ShdslMibObjects 9 }

hdsl2ShdslUnitMaintEntry OBJECT-TYPE
  SYNTAX      Hdsl2ShdslUnitMaintEntry
  MAX-ACCESS  not-accessible
  STATUS      current
  DESCRIPTION
    "An entry in the hdsl2ShdslUnitMaintTable.  Each entry
     corresponds to a single unit, and is indexed by the ifIndex
     of the HDSL2/SHDSL line and the UnitId of the associated
     unit."
  INDEX { ifIndex, hdsl2ShdslInvIndex  }
  ::= { hdsl2ShdslUnitMaintTable 1 }

Hdsl2ShdslUnitMaintEntry ::=
  SEQUENCE
  {
  hdsl2ShdslMaintLoopbackTimeout     Integer32,
  hdsl2ShdslMaintUnitPowerSource     INTEGER
  }

hdsl2ShdslMaintLoopbackTimeout OBJECT-TYPE
  SYNTAX      Integer32(0..4095)
  UNITS       "minutes"
  MAX-ACCESS  read-write
  STATUS      current
  DESCRIPTION
    "This object configures the timeout value for loopbacks
     initiated at segments endpoints contained in the associated
     unit.  A value of 0 disables the timeout."
  ::= { hdsl2ShdslUnitMaintEntry 1 }

hdsl2ShdslMaintUnitPowerSource OBJECT-TYPE
  SYNTAX      INTEGER
              {
              local(1),
              span(2)
              }
  MAX-ACCESS  read-only
  STATUS      current
  DESCRIPTION
    "This object indicates the DC power source being used by the



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RFC 3276                  HDSL2-SHDSL-LINE MIB                  May 2002


     associated unit."
  ::= { hdsl2ShdslUnitMaintEntry 2 }

-- Span Configuration Profile Group
--

hdsl2ShdslSpanConfProfileTable OBJECT-TYPE
  SYNTAX      SEQUENCE OF Hdsl2ShdslSpanConfProfileEntry
  MAX-ACCESS  not-accessible
  STATUS      current
  DESCRIPTION
    "This table supports definitions of span configuration
     profiles for SHDSL lines.  HDSL2 does not support these
     configuration options.  This table MUST be maintained
     in a persistent manner."
  ::= { hdsl2ShdslMibObjects 10 }

hdsl2ShdslSpanConfProfileEntry OBJECT-TYPE
  SYNTAX      Hdsl2ShdslSpanConfProfileEntry
  MAX-ACCESS  not-accessible
  STATUS      current
  DESCRIPTION
    "Each entry corresponds to a single span configuration
     profile.  Each profile contains a set of span configuration
     parameters.  The configuration parameters in a profile are
     applied to those lines referencing that profile (see the
     hdsl2ShdslSpanConfProfile object).  Profiles may be
     created/deleted using the row creation/deletion mechanism
     via hdsl2ShdslSpanConfProfileRowStatus.  If an active
     entry is referenced in hdsl2ShdslSpanConfProfile, the
     entry MUST remain active until all references are removed."
  INDEX { IMPLIED hdsl2ShdslSpanConfProfileName }
  ::= { hdsl2ShdslSpanConfProfileTable 1 }

Hdsl2ShdslSpanConfProfileEntry ::=
  SEQUENCE
  {
  hdsl2ShdslSpanConfProfileName               SnmpAdminString,
  hdsl2ShdslSpanConfWireInterface             INTEGER,
  hdsl2ShdslSpanConfMinLineRate               Unsigned32,
  hdsl2ShdslSpanConfMaxLineRate               Unsigned32,
  hdsl2ShdslSpanConfPSD                       INTEGER,
  hdsl2ShdslSpanConfTransmissionMode
                                  Hdsl2ShdslTransmissionModeType,
  hdsl2ShdslSpanConfRemoteEnabled             INTEGER,
  hdsl2ShdslSpanConfPowerFeeding              INTEGER,
  hdsl2ShdslSpanConfCurrCondTargetMarginDown  Integer32,
  hdsl2ShdslSpanConfWorstCaseTargetMarginDown Integer32,



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RFC 3276                  HDSL2-SHDSL-LINE MIB                  May 2002


  hdsl2ShdslSpanConfCurrCondTargetMarginUp    Integer32,
  hdsl2ShdslSpanConfWorstCaseTargetMarginUp   Integer32,
  hdsl2ShdslSpanConfUsedTargetMargins         BITS,
  hdsl2ShdslSpanConfReferenceClock
                                  Hdsl2ShdslClockReferenceType,
  hdsl2ShdslSpanConfLineProbeEnable           INTEGER,
  hdsl2ShdslSpanConfProfileRowStatus          RowStatus
  }

hdsl2ShdslSpanConfProfileName OBJECT-TYPE
  SYNTAX      SnmpAdminString (SIZE(1..32))
  MAX-ACCESS  not-accessible
  STATUS      current
  DESCRIPTION
    "This object is the unique index associated with this profile.
     Entries in this table are referenced via the object
     hdsl2ShdslSpanConfProfile in Hdsl2ShdslSpanConfEntry."
  ::= { hdsl2ShdslSpanConfProfileEntry 1 }

hdsl2ShdslSpanConfWireInterface OBJECT-TYPE
  SYNTAX      INTEGER
              {
              twoWire(1),
              fourWire(2)
              }
  MAX-ACCESS  read-create
  STATUS      current
  DESCRIPTION
    "This object configures the two-wire or optional four-wire
     operation for SHDSL Lines."
  DEFVAL      { twoWire }
  ::= { hdsl2ShdslSpanConfProfileEntry 2 }

hdsl2ShdslSpanConfMinLineRate OBJECT-TYPE
  SYNTAX      Unsigned32(0..4112000)
  UNITS       "bps"
  MAX-ACCESS  read-create
  STATUS      current
  DESCRIPTION
    "This object configures the minimum transmission rate for
     the associated SHDSL Line in bits-per-second (bps).  If
     the minimum line rate equals the maximum line rate
     (hdsl2ShdslSpanMaxLineRate), the line rate is considered
     'fixed'.  If the minimum line rate is less than the maximum
     line rate, the line rate is considered 'rate-adaptive'."
  DEFVAL      { 1552000 }
  ::= { hdsl2ShdslSpanConfProfileEntry 3 }




Ray & Abbi                  Standards Track                    [Page 42]

RFC 3276                  HDSL2-SHDSL-LINE MIB                  May 2002


hdsl2ShdslSpanConfMaxLineRate OBJECT-TYPE
  SYNTAX      Unsigned32(0..4112000)
  UNITS       "bps"
  MAX-ACCESS  read-create
  STATUS      current
  DESCRIPTION
    "This object configures the maximum transmission rate for
     the associated SHDSL Line in bits-per-second (bps).  If
     the minimum line rate equals the maximum line rate
     (hdsl2ShdslSpanMaxLineRate), the line rate is considered
     'fixed'.  If the minimum line rate is less than the maximum
     line rate, the line rate is considered 'rate-adaptive'."
  DEFVAL      { 1552000 }
  ::= { hdsl2ShdslSpanConfProfileEntry 4 }

hdsl2ShdslSpanConfPSD OBJECT-TYPE
  SYNTAX      INTEGER
              {
              symmetric(1),
              asymmetric(2)
              }
  MAX-ACCESS  read-create
  STATUS      current
  DESCRIPTION
    "This object configures use of symmetric/asymmetric PSD (Power
     Spectral Density) Mask for the associated SHDSL Line.  Support
     for symmetric PSD is mandatory for all supported data rates.
     Support for asymmetric PSD is optional."
  DEFVAL      { symmetric }
  ::= { hdsl2ShdslSpanConfProfileEntry 5 }

hdsl2ShdslSpanConfTransmissionMode OBJECT-TYPE
  SYNTAX      Hdsl2ShdslTransmissionModeType
  MAX-ACCESS  read-create
  STATUS      current
  DESCRIPTION
    "This object specifies the regional setting for the SHDSL
     line."
  DEFVAL      { { region1 } }
  ::= { hdsl2ShdslSpanConfProfileEntry 6 }

hdsl2ShdslSpanConfRemoteEnabled OBJECT-TYPE
  SYNTAX      INTEGER
              {
              enabled(1),
              disabled(2)
              }
  MAX-ACCESS  read-create



Ray & Abbi                  Standards Track                    [Page 43]

RFC 3276                  HDSL2-SHDSL-LINE MIB                  May 2002


  STATUS      current
  DESCRIPTION
    "This object enables/disables support for remote management
     of the units in a SHDSL line from the STU-R via the EOC."
  DEFVAL      { enabled }
  ::= { hdsl2ShdslSpanConfProfileEntry 7 }

hdsl2ShdslSpanConfPowerFeeding OBJECT-TYPE
  SYNTAX      INTEGER
              {
              noPower(1),
              powerFeed(2),
              wettingCurrent(3)
              }
  MAX-ACCESS  read-create
  STATUS      current
  DESCRIPTION
    "This object enables/disables support for optional power
     feeding in a SHDSL line."
  DEFVAL      { noPower }
  ::= { hdsl2ShdslSpanConfProfileEntry 8 }

hdsl2ShdslSpanConfCurrCondTargetMarginDown OBJECT-TYPE
  SYNTAX      Integer32(-10..21)
  UNITS       "dB"
  MAX-ACCESS  read-create
  STATUS      current
  DESCRIPTION
    "This object specifies the downstream current condition target
     SNR margin for a SHDSL line.  The SNR margin is the difference
     between the desired SNR and the actual SNR.  Target SNR margin
     is the desired SNR margin for a unit."
  DEFVAL      { 0 }
  ::= { hdsl2ShdslSpanConfProfileEntry 9 }

hdsl2ShdslSpanConfWorstCaseTargetMarginDown OBJECT-TYPE
  SYNTAX      Integer32(-10..21)
  UNITS       "dB"
  MAX-ACCESS  read-create
  STATUS      current
  DESCRIPTION
    "This object specifies the downstream worst case target SNR
     margin for a SHDSL line.  The SNR margin is the difference
     between the desired SNR and the actual SNR.  Target SNR
     margin is the desired SNR margin for a unit."
  DEFVAL      { 0 }
  ::= { hdsl2ShdslSpanConfProfileEntry 10 }




Ray & Abbi                  Standards Track                    [Page 44]

RFC 3276                  HDSL2-SHDSL-LINE MIB                  May 2002


hdsl2ShdslSpanConfCurrCondTargetMarginUp OBJECT-TYPE
  SYNTAX      Integer32(-10..21)
  UNITS       "dB"
  MAX-ACCESS  read-create
  STATUS      current
  DESCRIPTION
    "This object specifies the upstream current condition target
     SNR margin for a SHDSL line.  The SNR margin is the difference
     between the desired SNR and the actual SNR.  Target SNR margin
     is the desired SNR margin for a unit."
  DEFVAL      { 0 }
  ::= { hdsl2ShdslSpanConfProfileEntry 11 }

hdsl2ShdslSpanConfWorstCaseTargetMarginUp OBJECT-TYPE
  SYNTAX      Integer32(-10..21)
  UNITS       "dB"
  MAX-ACCESS  read-create
  STATUS      current
  DESCRIPTION
    "This object specifies the upstream worst case target SNR
     margin for a SHDSL line.  The SNR margin is the difference
     between the desired SNR and the actual SNR.  Target SNR margin
     is the desired SNR margin for a unit."
  DEFVAL      { 0 }
  ::= { hdsl2ShdslSpanConfProfileEntry 12 }

hdsl2ShdslSpanConfUsedTargetMargins OBJECT-TYPE
  SYNTAX      BITS
              {
              currCondDown(0),
              worstCaseDown(1),
              currCondUp(2),
              worstCaseUp(3)
              }
  MAX-ACCESS  read-create
  STATUS      current
  DESCRIPTION
    "Contains indicates whether a target SNR margin is enabled or
     disabled.  This is a bit-map of possible settings.  The
     various bit positions are:

     currCondDown     current condition downstream target SNR
                      margin enabled

     worstCaseDown    worst case downstream target SNR margin
                      enabled

     currCondUp       current condition upstream target SNR



Ray & Abbi                  Standards Track                    [Page 45]

RFC 3276                  HDSL2-SHDSL-LINE MIB                  May 2002


                      margin enabled

     worstCaseUp      worst case upstream target SNR margin
                      enabled."
  DEFVAL      { { currCondDown } }
  ::= { hdsl2ShdslSpanConfProfileEntry 13 }

hdsl2ShdslSpanConfReferenceClock OBJECT-TYPE
  SYNTAX      Hdsl2ShdslClockReferenceType
  MAX-ACCESS  read-create
  STATUS      current
  DESCRIPTION
    "This object configures the clock reference for the STU-C
    in a SHDSL Line."
  DEFVAL      { localClk }
  ::= { hdsl2ShdslSpanConfProfileEntry 14 }

hdsl2ShdslSpanConfLineProbeEnable OBJECT-TYPE
  SYNTAX      INTEGER
              {
              disable(1),
              enable(2)
              }
  MAX-ACCESS  read-create
  STATUS      current
  DESCRIPTION
    "This object enables/disables support for Line Probe of
    the units in a SHDSL line.  When Line Probe is enabled, the
    system performs Line Probing to find the best possible
    rate.  If Line probe is disabled, the rate adaptation phase
    is skipped to shorten set up time."
  DEFVAL      { disable }
  ::= { hdsl2ShdslSpanConfProfileEntry 15 }

hdsl2ShdslSpanConfProfileRowStatus OBJECT-TYPE
  SYNTAX      RowStatus
  MAX-ACCESS  read-create
  STATUS      current
  DESCRIPTION
    "This object controls creation/deletion of the associated
     entry in this table per the semantics of RowStatus.  If an
     active entry is referenced in hdsl2ShdslSpanConfProfile, the
     entry MUST remain active until all references are removed."
  ::= { hdsl2ShdslSpanConfProfileEntry 16 }

-- Segment Endpoint Alarm Configuration Profile group
--




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hdsl2ShdslEndpointAlarmConfProfileTable OBJECT-TYPE
  SYNTAX      SEQUENCE OF Hdsl2ShdslEndpointAlarmConfProfileEntry
  MAX-ACCESS  not-accessible
  STATUS      current
  DESCRIPTION
    "This table supports definitions of alarm configuration
     profiles for HDSL2/SHDSL segment endpoints.  This table
     MUST be maintained in a persistent manner."
  ::= { hdsl2ShdslMibObjects 11 }

hdsl2ShdslEndpointAlarmConfProfileEntry OBJECT-TYPE
  SYNTAX      Hdsl2ShdslEndpointAlarmConfProfileEntry
  MAX-ACCESS  not-accessible
  STATUS      current
  DESCRIPTION
    "Each entry corresponds to a single alarm configuration profile.
     Each profile contains a set of parameters for setting alarm
     thresholds for various performance attributes monitored at
     HDSL2/SHDSL segment endpoints.  Profiles may be created/deleted
     using the row creation/deletion mechanism via
     hdsl2ShdslEndpointAlarmConfProfileRowStatus.  If an active
     entry is referenced in either hdsl2ShdslSpanConfAlarmProfile
     or hdsl2ShdslEndpointAlarmConfProfile, the entry MUST remain
     active until all references are removed."
  INDEX { IMPLIED hdsl2ShdslEndpointAlarmConfProfileName }
  ::= { hdsl2ShdslEndpointAlarmConfProfileTable 1 }

Hdsl2ShdslEndpointAlarmConfProfileEntry ::=
  SEQUENCE
  {
  hdsl2ShdslEndpointAlarmConfProfileName       SnmpAdminString,
  hdsl2ShdslEndpointThreshLoopAttenuation      Integer32,
  hdsl2ShdslEndpointThreshSNRMargin            Integer32,
  hdsl2ShdslEndpointThreshES
              Hdsl2ShdslPerfIntervalThreshold,
  hdsl2ShdslEndpointThreshSES
              Hdsl2ShdslPerfIntervalThreshold,
  hdsl2ShdslEndpointThreshCRCanomalies         Integer32,
  hdsl2ShdslEndpointThreshLOSWS
              Hdsl2ShdslPerfIntervalThreshold,
  hdsl2ShdslEndpointThreshUAS
              Hdsl2ShdslPerfIntervalThreshold,
  hdsl2ShdslEndpointAlarmConfProfileRowStatus  RowStatus
  }

hdsl2ShdslEndpointAlarmConfProfileName OBJECT-TYPE
  SYNTAX      SnmpAdminString (SIZE(1..32))
  MAX-ACCESS  not-accessible



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  STATUS      current
  DESCRIPTION
    "This object is the unique index associated with this profile."
  ::= { hdsl2ShdslEndpointAlarmConfProfileEntry 1 }

hdsl2ShdslEndpointThreshLoopAttenuation OBJECT-TYPE
  SYNTAX      Integer32(-127..128)
  UNITS       "dB"
  MAX-ACCESS  read-create
  STATUS      current
  DESCRIPTION
    "This object configures the loop attenuation alarm threshold.
     When the current value of hdsl2ShdslEndpointCurrAtn reaches
     or exceeds this threshold, a hdsl2ShdslLoopAttenCrossing
     MAY be generated."
  DEFVAL      { 0 }
  ::= { hdsl2ShdslEndpointAlarmConfProfileEntry 2 }

hdsl2ShdslEndpointThreshSNRMargin OBJECT-TYPE
  SYNTAX      Integer32(-127..128)
  UNITS       "dB"
  MAX-ACCESS  read-create
  STATUS      current
  DESCRIPTION
    "This object configures the SNR margin alarm threshold.
     When the current value of hdsl2ShdslEndpointCurrSnrMgn
     reaches or drops below this threshold, a
     hdsl2ShdslSNRMarginCrossing MAY be generated."
  DEFVAL      { 0 }
  ::= { hdsl2ShdslEndpointAlarmConfProfileEntry 3 }

hdsl2ShdslEndpointThreshES OBJECT-TYPE
  SYNTAX      Hdsl2ShdslPerfIntervalThreshold
  UNITS       "seconds"
  MAX-ACCESS  read-create
  STATUS      current
  DESCRIPTION
    "This object configures the threshold for the number of
     errored seconds (ES) within any given 15-minute performance
     data collection interval.  If the value of errored seconds
     in a particular 15-minute collection interval reaches/
     exceeds this value, a hdsl2ShdslPerfESThresh MAY be
     generated.  At most one notification will be sent per
     interval per endpoint."
  DEFVAL      { 0 }
  ::= { hdsl2ShdslEndpointAlarmConfProfileEntry 4 }

hdsl2ShdslEndpointThreshSES OBJECT-TYPE



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  SYNTAX      Hdsl2ShdslPerfIntervalThreshold
  UNITS       "seconds"
  MAX-ACCESS  read-create
  STATUS      current
  DESCRIPTION
    "This object configures the threshold for the number of
     severely errored seconds (SES) within any given 15-minute
     performance data collection interval.  If the value of
     severely errored seconds in a particular 15-minute collection
     interval reaches/exceeds this value, a hdsl2ShdslPerfSESThresh
     MAY be generated.  At most one notification will be sent per
     interval per endpoint."
  DEFVAL      { 0 }
  ::= { hdsl2ShdslEndpointAlarmConfProfileEntry 5 }

hdsl2ShdslEndpointThreshCRCanomalies OBJECT-TYPE
  SYNTAX      Integer32
  UNITS       "detected CRC Anomalies"
  MAX-ACCESS  read-create
  STATUS      current
  DESCRIPTION
    "This object configures the threshold for the number of
     CRC anomalies within any given 15-minute performance data
     collection interval.  If the value of CRC anomalies in a
     particular 15-minute collection interval reaches/exceeds
     this value, a hdsl2ShdslPerfCRCanomaliesThresh MAY be
     generated.  At most one notification will be sent per
     interval per endpoint."
  DEFVAL      { 0 }
  ::= { hdsl2ShdslEndpointAlarmConfProfileEntry 6 }

hdsl2ShdslEndpointThreshLOSWS OBJECT-TYPE
  SYNTAX      Hdsl2ShdslPerfIntervalThreshold
  UNITS       "seconds"
  MAX-ACCESS  read-create
  STATUS      current
  DESCRIPTION
    "This object configures the threshold for the number of
     Loss of Sync Word (LOSW) Seconds within any given 15-minute
     performance data collection interval.  If the value of LOSW
     in a particular 15-minute collection interval reaches/exceeds
     this value, a hdsl2ShdslPerfLOSWSThresh MAY be generated.
     At most one notification will be sent per interval per
     endpoint."
  DEFVAL      { 0 }
  ::= { hdsl2ShdslEndpointAlarmConfProfileEntry 7 }

hdsl2ShdslEndpointThreshUAS OBJECT-TYPE



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  SYNTAX      Hdsl2ShdslPerfIntervalThreshold
  UNITS       "seconds"
  MAX-ACCESS  read-create
  STATUS      current
  DESCRIPTION
    "This object configures the threshold for the number of
     unavailable seconds (UAS) within any given 15-minute
     performance data collection interval.  If the value of UAS
     in a particular 15-minute collection interval reaches/exceeds
     this value, a hdsl2ShdslPerfUASThresh MAY be generated.
     At most one notification will be sent per interval per
     endpoint."
  DEFVAL      { 0 }
  ::= { hdsl2ShdslEndpointAlarmConfProfileEntry 8 }

hdsl2ShdslEndpointAlarmConfProfileRowStatus OBJECT-TYPE
  SYNTAX      RowStatus
  MAX-ACCESS  read-create
  STATUS      current
  DESCRIPTION
    "This object controls creation/deletion of the associated
     entry in this table as per the semantics of RowStatus.
     If an active entry is referenced in either
     hdsl2ShdslSpanConfAlarmProfile or
     hdsl2ShdslEndpointAlarmConfProfile, the entry MUST remain
     active until all references are removed."
  ::= { hdsl2ShdslEndpointAlarmConfProfileEntry 9 }

-- Notifications Group
--

hdsl2ShdslNotifications OBJECT IDENTIFIER ::= { hdsl2ShdslMIB 0 }

hdsl2ShdslLoopAttenCrossing NOTIFICATION-TYPE
  OBJECTS
  {
  hdsl2ShdslEndpointCurrAtn,
  hdsl2ShdslEndpointThreshLoopAttenuation
  }
  STATUS     current
  DESCRIPTION
    "This notification indicates that the loop attenuation
     threshold (as per the hdsl2ShdslEndpointThreshLoopAttenuation
     value) has been reached/exceeded for the HDSL2/SHDSL segment
     endpoint."
  ::= { hdsl2ShdslNotifications 1 }

hdsl2ShdslSNRMarginCrossing NOTIFICATION-TYPE



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  OBJECTS
  {

  hdsl2ShdslEndpointCurrSnrMgn,
  hdsl2ShdslEndpointThreshSNRMargin
  }
  STATUS     current
  DESCRIPTION
    "This notification indicates that the SNR margin threshold (as
     per the hdsl2ShdslEndpointThreshSNRMargin value) has been
     reached/exceeded for the HDSL2/SHDSL segment endpoint."
  ::= { hdsl2ShdslNotifications 2 }

hdsl2ShdslPerfESThresh NOTIFICATION-TYPE
  OBJECTS
  {
  hdsl2ShdslEndpointCurr15MinES,
  hdsl2ShdslEndpointThreshES
  }
  STATUS     current
  DESCRIPTION
    "This notification indicates that the errored seconds threshold
     (as per the hdsl2ShdslEndpointThreshES value) has been reached/
     exceeded for the HDSL2/SHDSL segment endpoint."
  ::= { hdsl2ShdslNotifications 3 }

hdsl2ShdslPerfSESThresh NOTIFICATION-TYPE
  OBJECTS
  {
  hdsl2ShdslEndpointCurr15MinSES,
  hdsl2ShdslEndpointThreshSES
  }
  STATUS     current
  DESCRIPTION
    "This notification indicates that the severely errored seconds
     threshold (as per the hdsl2ShdslEndpointThreshSES value) has
     been reached/exceeded for the HDSL2/SHDSL Segment Endpoint."
  ::= { hdsl2ShdslNotifications 4 }

hdsl2ShdslPerfCRCanomaliesThresh NOTIFICATION-TYPE
  OBJECTS
  {
  hdsl2ShdslEndpointCurr15MinCRCanomalies,
  hdsl2ShdslEndpointThreshCRCanomalies
  }
  STATUS    current
  DESCRIPTION
    "This notification indicates that the CRC anomalies threshold



Ray & Abbi                  Standards Track                    [Page 51]

RFC 3276                  HDSL2-SHDSL-LINE MIB                  May 2002


     (as per the hdsl2ShdslEndpointThreshCRCanomalies value) has
     been reached/exceeded for the HDSL2/SHDSL Segment Endpoint."
  ::= { hdsl2ShdslNotifications 5 }

hdsl2ShdslPerfLOSWSThresh NOTIFICATION-TYPE
  OBJECTS
  {

  hdsl2ShdslEndpointCurr15MinLOSWS,
  hdsl2ShdslEndpointThreshLOSWS
  }
  STATUS     current
  DESCRIPTION
    "This notification indicates that the LOSW seconds threshold
     (as per the hdsl2ShdslEndpointThreshLOSWS value) has been
     reached/exceeded for the HDSL2/SHDSL segment endpoint."
  ::= { hdsl2ShdslNotifications 6 }

hdsl2ShdslPerfUASThresh NOTIFICATION-TYPE
  OBJECTS
  {
  hdsl2ShdslEndpointCurr15MinUAS,
  hdsl2ShdslEndpointThreshUAS
  }
  STATUS     current
  DESCRIPTION
    "This notification indicates that the unavailable seconds
     threshold (as per the hdsl2ShdslEndpointThreshUAS value) has
     been reached/exceeded for the HDSL2/SHDSL segment endpoint."
  ::= { hdsl2ShdslNotifications 7 }

hdsl2ShdslSpanInvalidNumRepeaters NOTIFICATION-TYPE
  OBJECTS
  {
  hdsl2ShdslSpanConfNumRepeaters
  }
  STATUS     current
  DESCRIPTION
    "This notification indicates that a mismatch has been detected
     between the number of repeater/regenerator units configured
     for a HDSL2/SHDSL line via the hdsl2ShdslSpanConfNumRepeaters
     object and the actual number of repeater/regenerator units
     discovered via the EOC."
  ::= { hdsl2ShdslNotifications 8 }

hdsl2ShdslLoopbackFailure NOTIFICATION-TYPE
  OBJECTS
  {



Ray & Abbi                  Standards Track                    [Page 52]

RFC 3276                  HDSL2-SHDSL-LINE MIB                  May 2002


  hdsl2ShdslMaintLoopbackConfig
  }
  STATUS     current
  DESCRIPTION
    "This notification indicates that an endpoint maintenance
     loopback command failed for an HDSL2/SHDSL segment."
  ::= { hdsl2ShdslNotifications 9 }

hdsl2ShdslpowerBackoff NOTIFICATION-TYPE
  OBJECTS
  {
  hdsl2ShdslEndpointCurrStatus
  }
  STATUS    current
  DESCRIPTION
    "This notification indicates that the bit setting for
     powerBackoff in the hdsl2ShdslEndpointCurrStatus object for
     this endpoint has changed."
  ::= { hdsl2ShdslNotifications 10 }

hdsl2ShdsldeviceFault NOTIFICATION-TYPE
  OBJECTS
  {
  hdsl2ShdslEndpointCurrStatus
  }
  STATUS    current
  DESCRIPTION
    "This notification indicates that the bit setting for
     deviceFault in the hdsl2ShdslEndpointCurrStatus object for
     this endpoint has changed."
  ::= { hdsl2ShdslNotifications 11 }

hdsl2ShdsldcContinuityFault NOTIFICATION-TYPE
  OBJECTS
  {
  hdsl2ShdslEndpointCurrStatus
  }
  STATUS    current
  DESCRIPTION
    "This notification indicates that the bit setting for
     dcContinuityFault in the hdsl2ShdslEndpointCurrStatus object
     for this endpoint has changed."
  ::= { hdsl2ShdslNotifications 12 }

hdsl2ShdslconfigInitFailure NOTIFICATION-TYPE
  OBJECTS
  {
  hdsl2ShdslEndpointCurrStatus



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  }
  STATUS    current
  DESCRIPTION
    "This notification indicates that the bit setting for
     configInitFailure in the hdsl2ShdslEndpointCurrStatus object
     for this endpoint has changed."
  ::= { hdsl2ShdslNotifications 13 }

hdsl2ShdslprotocolInitFailure NOTIFICATION-TYPE
  OBJECTS
  {
  hdsl2ShdslEndpointCurrStatus
  }
  STATUS    current
  DESCRIPTION
    "This notification indicates that the bit setting for
     protocolInitFailure in the hdsl2ShdslEndpointCurrStatus
     object for this endpoint has changed."
  ::= { hdsl2ShdslNotifications 14 }

hdsl2ShdslnoNeighborPresent NOTIFICATION-TYPE
  OBJECTS
  {
  hdsl2ShdslEndpointCurrStatus
  }
  STATUS    current
  DESCRIPTION
    "This notification indicates that the bit setting for
     noNeighborPresent in the hdsl2ShdslEndpointCurrStatus object
     for this endpoint has changed."
  ::= { hdsl2ShdslNotifications 15 }

hdsl2ShdslLocalPowerLoss NOTIFICATION-TYPE
  OBJECTS
  {
  hdsl2ShdslInvVendorID
  }
  STATUS    current
  DESCRIPTION
    "This notification indicates impending unit failure due to
     loss of local power (last gasp)."
  ::= { hdsl2ShdslNotifications 16 }

-- conformance information
--

hdsl2ShdslConformance OBJECT IDENTIFIER ::= { hdsl2ShdslMIB 3 }
hdsl2ShdslGroups      OBJECT IDENTIFIER ::=



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RFC 3276                  HDSL2-SHDSL-LINE MIB                  May 2002


            { hdsl2ShdslConformance 1 }
hdsl2ShdslCompliances OBJECT IDENTIFIER ::=
            { hdsl2ShdslConformance 2 }

-- agent compliance statements

hdsl2ShdslLineMibCompliance MODULE-COMPLIANCE
  STATUS  current
  DESCRIPTION
    "The section outlines compliance requirements for this MIB."
  MODULE
  MANDATORY-GROUPS
  {
  hdsl2ShdslSpanConfGroup,
  hdsl2ShdslSpanStatusGroup,
  hdsl2ShdslInventoryGroup,
  hdsl2ShdslEndpointConfGroup,
  hdsl2ShdslEndpointCurrGroup,
  hdsl2Shdsl15MinIntervalGroup,
  hdsl2Shdsl1DayIntervalGroup,
  hdsl2ShdslMaintenanceGroup,
  hdsl2ShdslEndpointAlarmConfGroup,
  hdsl2ShdslNotificationGroup
  }

GROUP  hdsl2ShdslInventoryShdslGroup
  DESCRIPTION
    "Support for this group is only required for implementations
    supporting SHDSL lines."

GROUP  hdsl2ShdslSpanShdslStatusGroup
  DESCRIPTION
    "Support for this group is only required for implementations
    supporting SHDSL lines."

GROUP  hdsl2ShdslSpanConfProfileGroup
  DESCRIPTION
    "Support for this group is only required for implementations
    supporting SHDSL lines."

  ::= { hdsl2ShdslCompliances 1 }

-- units of conformance
--

hdsl2ShdslSpanConfGroup OBJECT-GROUP
  OBJECTS
  {



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RFC 3276                  HDSL2-SHDSL-LINE MIB                  May 2002


  hdsl2ShdslSpanConfNumRepeaters,
  hdsl2ShdslSpanConfProfile,
  hdsl2ShdslSpanConfAlarmProfile
  }
  STATUS      current
  DESCRIPTION
    "This group supports objects for configuring span related
     parameters for HDSL2/SHDSL lines."
  ::= { hdsl2ShdslGroups 1 }

hdsl2ShdslSpanStatusGroup OBJECT-GROUP
  OBJECTS
  {
  hdsl2ShdslStatusNumAvailRepeaters
  }
  STATUS      current
  DESCRIPTION
    "This group supports objects for retrieving span related
     status for HDSL2/SHDSL lines."
  ::= { hdsl2ShdslGroups 2 }

hdsl2ShdslInventoryShdslGroup OBJECT-GROUP
  OBJECTS
  {
  hdsl2ShdslInvTransmissionModeCapability
  }
  STATUS      current
  DESCRIPTION
    "This group supports objects for retrieving SHDSL-specific
     inventory information."
  ::= { hdsl2ShdslGroups 3 }

hdsl2ShdslSpanShdslStatusGroup OBJECT-GROUP
  OBJECTS
  {
  hdsl2ShdslStatusMaxAttainableLineRate,
  hdsl2ShdslStatusActualLineRate,
  hdsl2ShdslStatusTransmissionModeCurrent
  }
  STATUS      current
  DESCRIPTION
    "This group supports objects for retrieving SHDSL-specific
     span related status."
  ::= { hdsl2ShdslGroups 4 }

hdsl2ShdslInventoryGroup OBJECT-GROUP
  OBJECTS
  {



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RFC 3276                  HDSL2-SHDSL-LINE MIB                  May 2002


  hdsl2ShdslInvVendorID,
  hdsl2ShdslInvVendorModelNumber,
  hdsl2ShdslInvVendorSerialNumber,
  hdsl2ShdslInvVendorEOCSoftwareVersion,
  hdsl2ShdslInvStandardVersion,
  hdsl2ShdslInvVendorListNumber,
  hdsl2ShdslInvVendorIssueNumber,
  hdsl2ShdslInvVendorSoftwareVersion,
  hdsl2ShdslInvEquipmentCode,
  hdsl2ShdslInvVendorOther
  }
  STATUS      current
  DESCRIPTION
    "This group supports objects that provide unit inventory
     information about the units in HDSL2/SHDSL lines."
  ::= { hdsl2ShdslGroups 5 }

hdsl2ShdslEndpointConfGroup OBJECT-GROUP
  OBJECTS
  {
  hdsl2ShdslEndpointCurrAtn
  }
  STATUS      current
  DESCRIPTION
    "This group supports objects for configuring parameters for
     segment endpoints in HDSL2/SHDSL lines."
  ::= { hdsl2ShdslGroups 6 }

hdsl2ShdslEndpointCurrGroup OBJECT-GROUP
  OBJECTS
  {
  hdsl2ShdslEndpointCurrAtn,
  hdsl2ShdslEndpointCurrSnrMgn,
  hdsl2ShdslEndpointCurrStatus,
  hdsl2ShdslEndpointES,
  hdsl2ShdslEndpointSES,
  hdsl2ShdslEndpointCRCanomalies,
  hdsl2ShdslEndpointLOSWS,
  hdsl2ShdslEndpointUAS,
  hdsl2ShdslEndpointCurr15MinTimeElapsed,
  hdsl2ShdslEndpointCurr15MinES,
  hdsl2ShdslEndpointCurr15MinSES,
  hdsl2ShdslEndpointCurr15MinCRCanomalies,
  hdsl2ShdslEndpointCurr15MinLOSWS,
  hdsl2ShdslEndpointCurr15MinUAS,
  hdsl2ShdslEndpointCurr1DayTimeElapsed,
  hdsl2ShdslEndpointCurr1DayES,
  hdsl2ShdslEndpointCurr1DaySES,



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RFC 3276                  HDSL2-SHDSL-LINE MIB                  May 2002


  hdsl2ShdslEndpointCurr1DayCRCanomalies,
  hdsl2ShdslEndpointCurr1DayLOSWS,
  hdsl2ShdslEndpointCurr1DayUAS
  }
  STATUS      current
  DESCRIPTION
    "This group supports objects which provide current status and
     performance measurements relating to segment endpoints in
     HDSL2/SHDSL lines."
  ::= { hdsl2ShdslGroups 7 }

hdsl2Shdsl15MinIntervalGroup OBJECT-GROUP
  OBJECTS
  {
  hdsl2Shdsl15MinIntervalES,
  hdsl2Shdsl15MinIntervalSES,
  hdsl2Shdsl15MinIntervalCRCanomalies,
  hdsl2Shdsl15MinIntervalLOSWS,
  hdsl2Shdsl15MinIntervalUAS
  }
  STATUS      current
  DESCRIPTION
    "This group supports objects which maintain historic
     performance measurements relating to segment endpoints in
     HDSL2/SHDSL lines in 15-minute intervals."
  ::= { hdsl2ShdslGroups 8 }

hdsl2Shdsl1DayIntervalGroup OBJECT-GROUP
  OBJECTS
  {
  hdsl2Shdsl1DayIntervalMoniSecs,
  hdsl2Shdsl1DayIntervalES,
  hdsl2Shdsl1DayIntervalSES,
  hdsl2Shdsl1DayIntervalCRCanomalies,
  hdsl2Shdsl1DayIntervalLOSWS,
  hdsl2Shdsl1DayIntervalUAS
  }
  STATUS      current
  DESCRIPTION
    "This group supports objects which maintain historic
     performance measurements relating to segment endpoints in
     HDSL2/SHDSL lines in 1-day intervals."
  ::= { hdsl2ShdslGroups 9 }

hdsl2ShdslMaintenanceGroup OBJECT-GROUP
  OBJECTS
  {
  hdsl2ShdslMaintLoopbackConfig,



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  hdsl2ShdslMaintTipRingReversal,
  hdsl2ShdslMaintPowerBackOff,
  hdsl2ShdslMaintSoftRestart,
  hdsl2ShdslMaintLoopbackTimeout,
  hdsl2ShdslMaintUnitPowerSource
  }
  STATUS      current
  DESCRIPTION
    "This group supports objects that provide support for
     maintenance actions for HDSL2/SHDSL lines."
  ::= { hdsl2ShdslGroups 10 }

hdsl2ShdslEndpointAlarmConfGroup OBJECT-GROUP
  OBJECTS
  {
  hdsl2ShdslEndpointAlarmConfProfile,
  hdsl2ShdslEndpointThreshLoopAttenuation,
  hdsl2ShdslEndpointThreshSNRMargin,
  hdsl2ShdslEndpointThreshES,
  hdsl2ShdslEndpointThreshSES,
  hdsl2ShdslEndpointThreshCRCanomalies,
  hdsl2ShdslEndpointThreshLOSWS,
  hdsl2ShdslEndpointThreshUAS,
  hdsl2ShdslEndpointAlarmConfProfileRowStatus
  }
  STATUS      current
  DESCRIPTION
    "This group supports objects that allow configuration of alarm
     thresholds for various performance parameters for HDSL2/SHDSL
     lines."
  ::= { hdsl2ShdslGroups 11 }

hdsl2ShdslNotificationGroup NOTIFICATION-GROUP
  NOTIFICATIONS
  {
  hdsl2ShdslLoopAttenCrossing,
  hdsl2ShdslSNRMarginCrossing,
  hdsl2ShdslPerfESThresh,
  hdsl2ShdslPerfSESThresh,
  hdsl2ShdslPerfCRCanomaliesThresh,
  hdsl2ShdslPerfLOSWSThresh,
  hdsl2ShdslPerfUASThresh,
  hdsl2ShdslSpanInvalidNumRepeaters,
  hdsl2ShdslLoopbackFailure,
  hdsl2ShdslpowerBackoff,
  hdsl2ShdsldeviceFault,
  hdsl2ShdsldcContinuityFault,
  hdsl2ShdslconfigInitFailure,



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  hdsl2ShdslprotocolInitFailure,
  hdsl2ShdslnoNeighborPresent,
  hdsl2ShdslLocalPowerLoss
  }
  STATUS      current
  DESCRIPTION
    "This group supports notifications of significant conditions
    associated with HDSL2/SHDSL lines."
  ::= { hdsl2ShdslGroups 12 }

hdsl2ShdslSpanConfProfileGroup OBJECT-GROUP
  OBJECTS
  {
  hdsl2ShdslSpanConfWireInterface,
  hdsl2ShdslSpanConfMinLineRate,
  hdsl2ShdslSpanConfMaxLineRate,
  hdsl2ShdslSpanConfPSD,
  hdsl2ShdslSpanConfTransmissionMode,
  hdsl2ShdslSpanConfRemoteEnabled,
  hdsl2ShdslSpanConfPowerFeeding,
  hdsl2ShdslSpanConfCurrCondTargetMarginDown,
  hdsl2ShdslSpanConfWorstCaseTargetMarginDown,
  hdsl2ShdslSpanConfCurrCondTargetMarginUp,
  hdsl2ShdslSpanConfWorstCaseTargetMarginUp,
  hdsl2ShdslSpanConfUsedTargetMargins,
  hdsl2ShdslSpanConfReferenceClock,
  hdsl2ShdslSpanConfLineProbeEnable,
  hdsl2ShdslSpanConfProfileRowStatus
  }
  STATUS      current
  DESCRIPTION
    "This group supports objects that constitute configuration
     profiles for configuring span related parameters in SHDSL
     lines."
  ::= { hdsl2ShdslGroups 13 }
END

7.  Security Considerations

  Blocking unauthorized access to the HDSL2-SHDSL MIB via the element
  management system is outside the scope of this document.  It should
  be noted that access to the MIB permits the unauthorized entity to
  modify the profiles (section 6.4) such that both subscriber service
  and network operations can be interfered with.  Subscriber service
  can be altered by modifying any of a number of service
  characteristics such as rate partitioning and maximum transmission
  rates.  Network operations can be impacted by modification of
  notification thresholds such as SES thresholds.



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  There are a number of managed objects in this MIB that may be
  considered to contain sensitive information.  Access to these objects
  would allow an intruder to obtain information about which vendor's
  equipment is in use on the network.  Further, such information is
  considered sensitive in many environments for competitive reasons.

  These identifying objects in the inventory group are:

  - hdsl2ShdslInvVendorID
  - hdsl2ShdslInvVendorModelNumber
  - hdsl2ShdslInvVendorSerialNumber
  - hdsl2ShdslInvVendorEOCSoftwareVersion
  - hdsl2ShdslInvStandardVersion
  - hdsl2ShdslInvVendorListNumber
  - hdsl2ShdslInvVendorIssueNumber
  - hdsl2ShdslInvVendorSoftwareVersion
  - hdsl2ShdslInvEquipmentCode
  - hdsl2ShdslInvVendorOther
  - hdsl2ShdslInvTransmissionModeCapability

  Therefore, it may be important in some environments to control read
  access to these objects and possibly to even encrypt the values of
  these object when sending them over the network via SNMP.  Not all
  versions of SNMP provide features for such a secure environment.

  It is recommended that the implementors consider the security
  features as provided by the SNMPv3 framework.  Specifically, the use
  of the User-based Security Model RFC 2574 [12] and the View-based
  Access Control Model RFC 2575 [15] are recommended.

  It is then the customer/user's responsibility to ensure that the SNMP
  entity giving access to an instance of this MIB, is properly
  configured to give access to those objects only to those principals
  (users) that have legitimate rights to access them.

  HDSL2-SHDSL layer connectivity from the xtuR will permit the
  subscriber to manipulate both the HDSL2-SHDSL link directly and the
  HDSL2-SHDSL embedded  operations channel (EOC) for their own loop.
  For example, unchecked or unfiltered fluctuations initiated by the
  subscriber could generate sufficient notifications to potentially
  overwhelm either the management interface to the network or the
  element manager.

  It should be noted that interface indices in this MIB are maintained
  persistently.  VACM data relating to these should be stored
  persistently.





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  There are a number of management objects defined in this MIB that
  have a MAX-ACCESS clause of read-write and/or read-create.  Such
  objects may be considered sensitive or vulnerable in some network
  environments.  The support for SET operations in a non-secure
  environment without proper protection can have a negative effect on
  network operations.

8.  Acknowledgments

  The authors are deeply grateful to the authors of the ADSL LINE MIB
  (RFC 2662 [23]), Gregory Bathrick and Faye Ly, as much of the text
  and structure of this document originates in their documents.

  The authors are also grateful to the authors of FR MFR MIB (RFC 3020
  [24]), Prayson Pate, Bob Lynch, and Kenneth Rehbehn, as the majority
  of the Security Considerations section was lifted from their
  document.

  The authors also acknowledge the importance of the contributions and
  suggestions regarding interface indexing structures received from
  David Horton of CITR.

  Other contributions were received from the following:

     Philip Bergstresser (Adtran)
     Steve Blackwell (Centillium)
     Umberto Bonollo (NEC Australia)
     Yagal Hachmon (RAD)
     Mark Johnson (Red Point)
     Sharon Mantin (Orckit)
     Moti Morgenstern (ECI)
     Raymond Murphy (Ericsson)
     Lee Nipper (Verilink)
     Randy Presuhn (BMC Software)
     Katy Sherman (Orckit)
     Mike Sneed (ECI)
     Jon Turney (DSL Solutions)
     Aron Wahl (Memotec)
     Bert Wijnen (Lucent)
     Michael Wrobel (Memotec)











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9.  References

  [1]   Harrington, D., Presuhn, R. and B. Wijnen, "An Architecture for
        Describing SNMP Management Frameworks", RFC 2571, April 1999.

  [2]   Rose, M. and K. McCloghrie, "Structure and Identification of
        Management Information for TCP/IP-based Internets", STD 16, RFC
        1155, May 1990.

  [3]   Rose, M. and K. McCloghrie, "Concise MIB Definitions", STD 16,
        RFC 1212, March 1991.

  [4]   Rose, M., "A Convention for Defining Traps for use with the
        SNMP", RFC 1215, March 1991.

  [5]   McCloghrie, K., Perkins, D., Schoenwaelder, J., Case, J., Rose,
        M. and S. Waldbusser, "Structure of Management Information
        Version 2 (SMIv2)", STD 58, RFC 2578, April 1999.

  [6]   McCloghrie, K., Perkins, D., Schoenwaelder, J., Case, J., Rose,
        M. and S. Waldbusser, "Textual Conventions for SMIv2", STD 58,
        RFC 2579, April 1999.

  [7]   McCloghrie, K., Perkins, D., Schoenwaelder, J., Case, J., Rose,
        M. and S. Waldbusser, "Conformance Statements for SMIv2", STD
        58, RFC 2580, April 1999.

  [8]   Case, J., Fedor, M., Schoffstall, M. and J. Davin, "Simple
        Network Management Protocol", STD 15, RFC 1157, May 1990.

  [9]   Case, J., McCloghrie, K., Rose, M. and S. Waldbusser,
        "Introduction to Community-based SNMPv2", RFC 1901, January
        1996.

  [10]  Case, J., McCloghrie, K., Rose, M. and S. Waldbusser,
        "Transport Mappings for Version 2 of the Simple Network
        Management Protocol (SNMPv2)", RFC 1906, January 1996.

  [11]  Case, J., Harrington D., Presuhn, R. and B. Wijnen, "Message
        Processing and Dispatching for the Simple Network Management
        Protocol (SNMP)", RFC 2572, April 1999.

  [12]  Blumenthal, U. and B. Wijnen, "User-based Security Model (USM)
        for version 3 of the Simple Network Management Protocol
        (SNMPv3)", RFC 2574, April 1999.






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  [13]  Case, J., McCloghrie, K., Rose, M. and S. Waldbusser, "Protocol
        Operations for Version 2 of the Simple Network Management
        Protocol (SNMPv2)", RFC 1905, January 1996.

  [14]  Levi, D., Meyer, P. and B. Stewart, "SNMPv3 Applications", RFC
        2573, April 1999.

  [15]  Wijnen, B., Presuhn, R. and K. McCloghrie, "View-based Access
        Control Model (VACM) for the Simple Network Management Protocol
        (SNMP)", RFC 2575, April 1999.

  [16]  Case, J., Mundy, R., Partain, D. and B. Stewart, "Introduction
        to Version 3 of the Internet-standard Network Management
        Framework", RFC 2570, April 1999.

  [17]  Bradner, S., "Key Words for use in RFCs to Indicate Requirement
        Levels", BCP 14, RFC 2119, March 1997.

  [18]  American National Standards Institute, ANSI T1E1.4/2000-006,
        February 2000.

  [19]  Blackwell, S., Editor, "Single-Pair High-Speed Digital
        Subscriber Line (SHDSL) Transceivers", ITU-T Draft G.991.2,
        April 2000.

  [20]  McCloghrie, K. and M. Rose, M., "Management Information Base
        for Network Management of TCP/IP-based internets: MIB-II", STD
        17, RFC 1213, March 1991.

  [21]  McCloghrie, K. and F. Kastenholz, "The Interfaces Group MIB",
        RFC 2863, June 2000.

  [22]  Tesink, K., "Textual Conventions for MIB Modules Using
        Performance History Based on 15 Minute Intervals", RFC 2493,
        January 1999.

  [23]  Bathrick, G. and F. Ly, "Definitions of Managed Objects for the
        ADSL Lines", RFC 2662, August 1999.

  [24]  Pate, P., Lynch, B. and K. Rehbehn, "Definitions of Managed
        Objects for Monitoring and Controlling the UNI/NNI Multilink
        Frame Relay Function", RFC 3020, December 2000.

  [25]  American National Standards Institute, "Coded Identification of
        Equipment Entities of the North American Telecommunications
        System for the Purpose of Information Exchange", T1.213-2001.





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10.  Intellectual Property Notice

  The IETF takes no position regarding the validity or scope of any
  intellectual property or other rights that might be claimed to
  pertain to the implementation or use of the technology described in
  this document or the extent to which any license under such rights
  might or might not be available; neither does it represent that it
  has made any effort to identify any such rights.  Information on the
  IETF's procedures with respect to rights in standards-track and
  standards-related documentation can be found in BCP-11.  Copies of
  claims of rights made available for publication and any assurances of
  licenses to be made available, or the result of an attempt made to
  obtain a general license or permission for the use of such
  proprietary rights by implementors or users of this specification can
  be obtained from the IETF Secretariat.

  The IETF invites any interested party to bring to its attention any
  copyrights, patents or patent applications, or other proprietary
  rights which may cover technology that may be required to practice
  this standard.  Please address the information to the IETF Executive
  Director.

11.  Authors' Addresses

  Bob Ray
  PESA Switching Systems, Inc.
  330-A Wynn Drive
  Huntsville, AL 35805 USA

  Phone: +1 256 726 9200 ext. 142
  Fax: +1 256 726 9271
  EMail: [email protected]

  Rajesh Abbi
  Alcatel USA
  2912 Wake Forest Road
  Raleigh, NC 27609-7860 USA

  Phone: +1 919-850-6194
  Fax:   +1 919-850-6670
  EMail: [email protected]










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12.  Full Copyright Statement

  Copyright (C) The Internet Society (2002).  All Rights Reserved.

  This document and translations of it may be copied and furnished to
  others, and derivative works that comment on or otherwise explain it
  or assist in its implementation may be prepared, copied, published
  and distributed, in whole or in part, without restriction of any
  kind, provided that the above copyright notice and this paragraph are
  included on all such copies and derivative works.  However, this
  document itself may not be modified in any way, such as by removing
  the copyright notice or references to the Internet Society or other
  Internet organizations, except as needed for the purpose of
  developing Internet standards in which case the procedures for
  copyrights defined in the Internet Standards process must be
  followed, or as required to translate it into languages other than
  English.

  The limited permissions granted above are perpetual and will not be
  revoked by the Internet Society or its successors or assigns.

  This document and the information contained herein is provided on an
  "AS IS" basis and THE INTERNET SOCIETY AND THE INTERNET ENGINEERING
  TASK FORCE DISCLAIMS ALL WARRANTIES, EXPRESS OR IMPLIED, INCLUDING
  BUT NOT LIMITED TO ANY WARRANTY THAT THE USE OF THE INFORMATION
  HEREIN WILL NOT INFRINGE ANY RIGHTS OR ANY IMPLIED WARRANTIES OF
  MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.

Acknowledgement

  Funding for the RFC Editor function is currently provided by the
  Internet Society.



















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