RE: EFM PHY status for 2BASE-TL

"Edward Beili" <[email protected]>
Newsgroups gmane.ietf.hubmib
Message-ID <[email protected]>
Mathias,

Thank you for the comments. I was beginning to think that nobody is really interested in that MIB:)
Let's start from  the end:

- Loss of Power (LOP):
  In SHDSL the idea was that -R device would have enough power on local power failure, to send 3 consecutive frames to -C device, with power indicator bit set. Sort of a "dying gasp". In theory this should help in troubleshooting link interruption reasons, i.e. differentiate between wires cut and CPE power failure or may be helping the CO to shutdown its modems in an orderly fashion. In practice, implementation of such feature would place certain requirements on the equipment design (i.e. provide ~20ms of current for the PHY in the event of power failure), which is out of the scope of the PHY design (and not mentioned anywhere in the text of the EFM standard).
So, I'm inclined to throw 'Loss of Power' value out. If any of you think otherwise please make yourselves heard.
In case we decide on letting it stay, its definition should be changed to:
 'Remote PHY indicated power loss. The value is not supported by -R port sub-types.'

- Loss of Signal (LOS):
  According to SHDSL definition LOS indeed indicates LOS at the application interface, i.e. MII. If this is the preferred explanation I would remove this value as well.
(My original thought was that there's a way of differentiating between Loss of Framing, e.g. DSL framing or 64/65B framing and real Loss of Signal, e.g. cut line, similar to optical SDH/SONET LOF/LOS differentiation. It looks like there's no unambiguous and fast way to differentiate between the two at least in SHDSL. If I'm wrong please speak up).  

- Loss of Framing (LOF):
  It should be mapped to LOSW failure, which is a soaked alarm, you wouldn't want your SNMP variable to change it's value all the time on intermittent LOSW defects.
Now that you mentioned it I ask myself if we really need Remote Loss of Framing in the MIB? I think that in most cases remote LOF would always be accompanied by a local LOF, unless you are debugging your interop:).
Do you think we should keep Remote LOF?


Few more points I would like to clarify using this opportunity:

1. Target SNR Margin
   In EFM today the target SNR margin is fixed - 6dB for 10PassTS and 5dB for 2BaseTL.
Should we allow for configurable Target SNR Margin?

2. Initially I thought to propagate PME defects to the PHY level, that's why all those "one or more PME's indicate defect" values have made it into efmCuStatus. I'm thinking now that this individual PME's defects shall stay at the PME level and not be escalated.
So I would like to remove lossOfSignal, lossOfPower, lossOfFraming, lossOfRemoteFraming,  snrMgnDefect, snrMgnRemoteDefect, lineAtnDefect, lineAtnRemoteDefect values from the efmCuStatus.
What do you think?

Regards,
-E.

I've attached the latest version of EFM CU MIB.
 

> -----Original Message-----
> From: [email protected] [mailto:[email protected]]
> Sent: Tuesday, 22 June, 2004 02:25 PM
> To: Edward Beili; [email protected]
> Subject: EFM PHY status for 2BASE-TL
> 
> 
> Edward & Mark,
> 	when analyzing the IEEE standard more in detail and also going
> thru the hubmib you, Edward, provided some more question for
> clarification for the PHY status came up.
> 	Currently form my point of view it is not clearly specified how
> to map the following entries:
> Clause 30.11.1.1.3 defines the variable aPHYCurrentStatus. 
> The following
> enumeration types are not clear
> -loss of framing: 
> SHDSL provides 2 kind of primitives, the LOSW defect (Loss of Syncword
> in 3 consecutive frames) and LOSW failure (persistence of LOSW defect
> for a certain time) 
> 	- which of the 2 should be mapped to 'loss of framing'; on one
> hand personally I believe LOSW defect does reflect a status, 
> but on the
> other hand the hubmib also defines a lossOfRemoteFraming. 
> This variable
> seems to be clear to me when using the LOSW failure 
> transmitted with the
> respective EOC message. Based on the remote variable  I would prefer
> mapping the loss of framing to the LOSW failure
> 
> - loss of signal: 
> currently there is a loss of signal bit defined in the SHDSL frame in
> order to report a loss of signal from the application interface of the
> remote end,
> So based on this SHDSL definition this would be a loss of signal from
> the remote side on the MII interface (I would consider the 
> MII interface
> as the application interface). This leads to 3 questions: a) Do we
> really want to report the status form the other side (based 
> on the loss
> of signal definition)? B) Is the MII interface considered as 
> application
> interface and how do I detect a loss of signal? C) Do we want to use a
> completely different definition?
> 
> - loss of power
> The situation is similar to the 'loss of signal' The SHDSL frame has a
> reserved power bit. This is used in order to report the power status
> from the other side? Similarily, 2 question come up. A) Do we want to
> support the power status from the remote end? B) In a CO application
> reporting the local status does not seem to make sense, since, I would
> assume; there is a central instance
> 
> 
> It would be great if you could send me your opinion on that (or may be
> this is already defined?)
> 
> Thanks
> Mathias
> 
>

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Network Working Group                                           E. Beili
Internet-Draft                                          Actelis Networks
Expires: December 22, 2004                                 June 23, 2004


        Ethernet in the First Mile Copper (EFMCu) Interfaces MIB
                  draft-ietf-hubmib-efm-cu-mib-01.txt

Status of this Memo

   By submitting this Internet-Draft, I certify that any applicable
   patent or other IPR claims of which I am aware have been disclosed,
   and any of which I become aware will be disclosed, in accordance with
   RFC 3668.

   Internet-Drafts are working documents of the Internet Engineering
   Task Force (IETF), its areas, and its working groups.  Note that
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   http://www.ietf.org/shadow.html.

   This Internet-Draft will expire on December 22, 2004.

Copyright Notice

   Copyright (C) The Internet Society (2004).  All Rights Reserved.

Abstract

   This document defines a portion of the Management Information Base
   (MIB) for use with network management protocols in TCP/IP based
   Internets.  This document proposes an extension to the Ethernet-like
   Interfaces MIB and MAU MIB with a set of objects for managing an
   Ethernet in the First Mile Copper (EFMCu) interfaces 10Pass-TS and
   2Base-TL defined in IEEE standard 802.3ah.







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Table of Contents

   1.  Introduction . . . . . . . . . . . . . . . . . . . . . . . . .  3
   2.  The Internet-Standard Management Framework . . . . . . . . . .  3
   3.  Relation to Interfaces Group MIB . . . . . . . . . . . . . . .  3
     3.1   Layering Model . . . . . . . . . . . . . . . . . . . . . .  4
     3.2   PME Aggregation Function (PAF) . . . . . . . . . . . . . .  4
     3.3   Discovery Operation  . . . . . . . . . . . . . . . . . . .  5
     3.4   Relation to SHDSL MIB  . . . . . . . . . . . . . . . . . .  6
     3.5   Relation to VDSL MIB . . . . . . . . . . . . . . . . . . .  6
     3.6   Relation to Ethernet-Like and MAU MIBs . . . . . . . . . .  6
     3.7   Mapping of IEEE 802.3ah Managed Objects  . . . . . . . . .  7
   4.  Definitions  . . . . . . . . . . . . . . . . . . . . . . . . .  7
   5.  Security Considerations  . . . . . . . . . . . . . . . . . . . 42
   6.  Acknowledgments  . . . . . . . . . . . . . . . . . . . . . . . 43
   7.  References . . . . . . . . . . . . . . . . . . . . . . . . . . 44
   7.1   Normative References . . . . . . . . . . . . . . . . . . . . 44
   7.2   Informative References . . . . . . . . . . . . . . . . . . . 44
       Author's Address . . . . . . . . . . . . . . . . . . . . . . . 45
       Intellectual Property and Copyright Statements . . . . . . . . 46































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1.  Introduction

   New Ethernet like interfaces have been defined in the Institute of
   Electrical and Electronics Engineers (IEEE) 802.3ah project a.k.a.
   Ethernet in the First Mile (EFM) [802.3ah].  In particular 2Base-TL
   and 10Pass-TS physical interfaces (PHYs), defined over voice-grade
   copper pairs, have been specified for the long and short reach
   respectively.  These interfaces, collectively called EFMCu, support
   variable rates and optional Physical Medium Entity (PME) aggregation
   (multi-pair bonding).

   This memo defines a portion of the Management Information Base (MIB)
   for use with network management protocols in the Internet community
   to manage EFMCu interfaces.

   Note that managed objects for Operation, Administration and
   Management (OAM) and Ethernet over Passive Optical Networks (EPON)
   clauses of IEEE 802.3ah are defined in EFM-COMMON-MIB
   [I-D.ietf-hubmib-efm-mib] and EFM-EPON-MIB
   [I-D.ietf-hubmib-efm-epon-mib] respectively.

2.  The Internet-Standard Management Framework

   For a detailed overview of the documents that describe the current
   Internet-Standard Management Framework, please refer to section 7 of
   RFC 3410 [RFC3410].

   Managed objects are accessed via a virtual information store, termed
   the Management Information Base or MIB.  MIB objects are generally
   accessed through the Simple Network Management Protocol (SNMP).
   Objects in the MIB are defined using the mechanisms defined in the
   Structure of Management Information (SMI).  This memo specifies a MIB
   module that is compliant to the SMIv2, which is described in STD 58,
   RFC 2578 [RFC2578], STD 58, RFC 2579 [RFC2579] and STD 58, RFC 2580
   [RFC2580].  A detailed introduction to the current SNMP Management
   Framework can be found in RFC 2570 [RFC2570].

   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 [RFC2119].

3.  Relation to Interfaces Group MIB

   This section specifies how the ifStackTable, as defined in the IF-MIB
   [RFC2863] and ifInvStackTable, as defined in the
   IF-INVERTED-STACK-MIB [RFC2864] are used for the EFMCu application.





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3.1  Layering Model

   An EFMCu interface can aggregate up to 32 Physical Medium Entity
   (PME) sublayer devices (modems), using so called PME Aggregation
   Function (PAF).

   An generic EFMCu device can have a number of Physical Coding Sublayer
   (PCS) ports, connected to a MAC via Medium Independent Interface
   (MII) at the upper layer, and cross-connected to a number of
   underlying PMEs, with a single PCS per PME relationship, see clause
   61.1 of [802.3ah] for more details.

   Each PME comprising an aggregated EFMCu port is represented in the
   Interface table as a separate port with ifType of shdsl(169) for
   2Base-TL or vdsl(97) for 10Pass-TS.  The ifType values are defined in
   IANAifType-MIB.  ifSpeed for each PME shall return an actual bitrate
   of the active PME or a configured bitrate for pre-activated modems
   (note that unassigned PME has its default bitrate).

   The ifStackTable is indexed by the ifIndex values of the aggregated
   EFMCu port (PCS) and the PMEs connected to it.  ifStackTable allows a
   Network Management application to determine which PMEs are connected
   to a particular PCS and change connections (if supported by the
   application).  The ifInvStackTable, being an inverted version of the
   ifStackTable, provides an efficient means for a Network Management
   application to read a subset of the ifStackTable and thereby
   determine which PCS runs on top of a particular PME.

   A new table efmCuAvailableStackTable defined in this MIB, specifies
   for each PCS a list of PMEs, which can possibly be cross-connected to
   that PCS, determined by the cross-connect capability of the device.
   This table, modeled after ifStackTable, is read only.

   *EdNote: An alternative would be to use ifStackTable to describe
   cross-connect capability and efmCuAvailableStackTable to describe
   actual connections, so that the cross-connect action would be done in
   the EFM-CU-MIB by modifying the efmCuAvailableStackTable (and not in
   IF-MIB).*

3.2  PME Aggregation Function (PAF)

   The PME Aggregation Function (PAF) is optional and may not be
   supported.  Note however that it is mandatory for the agent to report
   on the PAF capability for all EFMCu ports (2BASE-TL and 10PASS-TS).

   *EdNote: Add more info.*





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3.3  Discovery Operation

   This MIB allows a Network Management application to control EFM
   Discovery mechanism and query its results.  Note that the Discovery
   mechanism can work only if PAF is supported and enabled.

   Two tables are used by Discovery mechanism: ifStackTable and
   efmCuAvailableStackTable defined.  The following pseudo-code defines
   an example of Discovery for a generic PAF enabled multi-PCS EFMCu
   device, located at Central Office (CO):

   foreach PCS[i] in Device
   { if ( PCS[i].PAFSupported ) // Discover only on ports supporting PAF
       { dc = PCS[i].DiscoveryCode = MAC[i]; // unique 6 Byte per PCS
         // go over all currently disconnected PMEs, which can
         // pottentially be connected to PCS[i]
         foreach PME[j] in efmCuAvailableStackTable[PCS[i]] and
                        not in ifStackTable[PCS[i]]
           { PME[j].RemoteDiscoveryCode = dc;	// Set if Clear
             r = PME[j].RemoteDiscoveryCode;	// Get
             if ( r == dc )
               { // Remote CPE connected via PME[j] is/was a peer for
                 // PCS[i]. Connect this PME to the PCS
                 Add PME[j] to ifStackTable[PCS[i]];
                 // Discover all other currently disconnected PMEs,
                 // attached to the same CPE and connect them to the PCS
                 foreach PME[k] in efmCuAvailableStackTable[PCS[i]] and
                                not in ifStackTable[PCS[i]]
                   { r = PME[k].RemoteDiscoveryCode;	// Get
                     if ( r == dc )
                       Add PME[k] to ifStackTable[PCS[i]];
                   }
               }
             // Discovered all PMEs which lead to the same CPE and
             // connected them to PCS[i]. Go to the next PCS.
             break;
           }
       }
   }

   The SNMP Agent builds efmCuStackTable according to the information
   contained in the Clause 45 PME_Available_register (see [802.3ah]
   61.1.5.3 and 45.2.3.20).

   Adding a PME to the ifStackTable row for a specific PCS, involves
   actual connection of the PME to the PCS, which can be done by
   modifying Clause 45 PME_Aggregate_register (see [802.3ah] 61.1.5.3
   and 45.2.3.21).



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3.4  Relation to SHDSL MIB

   SHDSL modems, similar to PME(s) comprising a 2BaseTL port are
   described in HDSL2-SHDSL-LINE-MIB [RFC3276].  While
   HDSL2-SHDSL-LINE-MIB describes standard G.SHDSL modems according to
   ITU-T G.991.2, IEEE 802.3ah uses soon to be approved G.SHDSL.bis
   spec, extended to support higher constellations and rates.  In
   addition not all attributes of G.SHDSL modems reflected in
   HDSL2-SHDSL-LINE-MIB have adequate management objects in the EFM
   standards.

   Because of these differences and for the purposes of simplicity and
   name consistency it was decided not to reference HDSL2-SHDSL-LINE-MIB
   objects, but define all the relevant objects in this MIB.

3.5  Relation to VDSL MIB

   PME(s) comprising a 10PassTS port are described in VDSL-LINE-MIB
   [I-D.ietf-adslmib-vdsl].  In cases where VDSL-LINE-MIB and 802.3ah
   differ, the definitions in 802.3ah take precedence.

   Because of these differences and for the purposes of simplicity and
   name consistency it was decided not to reference VDSL-LINE-MIB
   objects, but define all the relevant objects in this MIB.

3.6  Relation to Ethernet-Like and MAU MIBs

   The implementation of EtherLike-MIB [RFC3635] and MAU-MIB [RFC3636]
   is REQUIRED for the EFMCu interfaces.  As such EFMCu interfaces
   2Base-TL/10Pass-TS SHALL return an ifType of ethernetCsmacd(6).
   Information on the particular flavor of EFMCu that an interface is
   running is available from ifSpeed in the IF-MIB [RFC2863], and
   ifMauType in the MAU-MIB.

   The MAU-MIB shall be augmented to include the following new values
   for ifMauType (instances of dot2MauType):

   o  dot3MauType2BaseTL - voice grade UTP Phy specified in Clause 61
      and 63

   o  dot3MauType10PassTS - voice grade UTP Phy specified in Clause 61
      and 62

   o  *EdNote: Should we also include -O/-R subtypes?*







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3.7  Mapping of IEEE 802.3ah Managed Objects

   This section contains the mapping between managed objects defined in
   [802.3ah] Clause 30, and managed objects defined in this document and
   in associated MIB modules, i.e., the IF-MIB [RFC2863] and the MAU-MIB
   [RFC3636].

   +---------------------------------+---------------------------------+
   | IEEE 802.3 Managed Object       | Corresponding SNMP Object       |
   +---------------------------------+---------------------------------+
   | oPAF - PME Basic Package        |                                 |
   | (Mandatory)                     |                                 |
   | aPAFID                          | IF-MIB - ifIndex                |
   | aPhyEnd                         | efmCuPhySide                    |
   | aPHYCurrentStatus               | efmCuStatus                     |
   | aPAFSupported                   | efmCuPAFSupported               |
   | oPAF - PME Aggregation Package  |                                 |
   | (Optional)                      |                                 |
   | aPAFAdminState                  | efmCuPAFAdminState              |
   | aLocalPAFCapacity               | efmCuPAFCapacity                |
   | aLocalPMEAvailable              | efmCuAvailableStackTable        |
   | aLocalPMEAggregate              | ifStackTable                    |
   | aRemotePAFSupported             | efmCuRemotePAFSupported         |
   | aRemotePAFCapacity              | efmCuRemotePAFCapacity          |
   | aRemotePMEAvailable             |                                 |
   | aRemotePMEAggregate             | ifStackTable                    |
   | oPME - 10P/2B Package           |                                 |
   | (Mandatory)                     |                                 |
   | aPMEID                          |                                 |
   | aPMEAdminState                  |                                 |
   | aPMEStatus                      |                                 |
   | aPMESNRMgn                      | SHDSL-MIB -                     |
   |                                 | hdsl2ShdslEndpointCurrSnrMgn    |
   | aTCCodingViolations             |                                 |
   | aProfileSelect                  | efmCuProfileSelect              |
   | aOperatingProfile               |                                 |
   | aPMEFECCorrectedBlocks          |                                 |
   | aPMEFECUncorrectableBlocks      |                                 |
   +---------------------------------+---------------------------------+

                                Table 1


4.  Definitions

   EFM-CU-MIB DEFINITIONS ::= BEGIN

     IMPORTS



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       MODULE-IDENTITY, OBJECT-TYPE, NOTIFICATION-TYPE, Integer32
         FROM SNMPv2-SMI
       TruthValue, RowStatus, PhysAddress
         FROM SNMPv2-TC
       ifIndex, InterfaceIndexOrZero
         FROM IF-MIB
       MODULE-COMPLIANCE, OBJECT-GROUP, NOTIFICATION-GROUP
         FROM SNMPv2-CONF
       ;

     efmCuMIB MODULE-IDENTITY
       LAST-UPDATED "200406220000Z"  -- June 22, 2004
       ORGANIZATION "IETF Ethernet Interfaces and Hub MIB Working Group"
       CONTACT-INFO
         "WG charter:
           http://www.ietf.org/html.charters/hubmib-charter.html

         Mailing Lists:
           General Discussion: [email protected]
           To Subscribe: [email protected]
           In Body: subscribe your_email_address

         Chair:  Dan Romascanu
         Postal: Avaya
                 Atidim Technology Park, Bldg. 3
                 Tel Aviv 61131
                 Israel
            Tel: +972 3 645 8414
         E-mail: [email protected]

         Editor: Edward Beili
         Postal: Actelis Networks Inc.
                 25 Bazel St., P.O.B. 10173
                 Petach-Tikva 10173
                 Israel
                 Tel: +972-3-924-3491
         E-mail: [email protected]"

       DESCRIPTION
         "The objects in this MIB module are used to manage
         the Ethernet in the First Mile (EFM) Copper (EFMCu) Interfaces
         2BASE-TL and 10PASS-TS, defined in IEEE Draft P802.3ah/D3.3.

         The following reference is used throughout this MIB module:

         [802.3ah] refers to:
           IEEE Draft P802.3ah/D3.3: 'Draft amendment to -
           Information technology - Telecommunications and



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           information exchange between systems - Local and
           metropolitan area networks - Specific requirements -
           Part 3: Carrier sense multiple access with collision
           detection (CSMA/CD) access method and physical layer
           specifications - Media Access Control Parameters, Physical
           Layers and Management Parameters for subscriber access
           networks', 19 April 2003.

         Of particular interest are Clause 61, 'Physical Coding
         Sublayer (PCS) and common specifications, type 10PASS-TS and
         type 2BASE-TL', Clause 30, 'Management', and Clause 45,
         'Management Data Input/Output (MDIO) Interface'.

         Naming Conventions:
           Atn   - Attenuation
           CO    - Central Office
           CPE   - Customer Premises Equipment
           EFM   - Ethernet in the First Mile
           EFMCu - EFM Copper
           MDIO  - Management Data Input/Output
           Mgn   - Margin
           PAF   - PME Aggregation Function
           PCS   - Physical Coding Sublayer
           PMD   - Physical Medium Dependent
           PME   - Physical Medium Entity
           PSD   - Power Spectral Density
           SNR   - Signal to Noise Ratio

         Copyright (C) The Internet Society (2004).  This version
         of this MIB module is part of RFC XXXX;  see the RFC
         itself for full legal notices."

         -- EdNote: Replace XXXX with the actual RFC number &
         -- remove this note

       REVISION    "200406220000Z"  -- June 22, 2004
       DESCRIPTION "Initial version, published as RFC XXXX."

       ::= { mib-2 160 }

         -- EdNote: Replace YYY with a real OID once it is
         -- allocated & remove this note.

      -- Sections of the module

      efmCuObjects     OBJECT IDENTIFIER ::= { efmCuMIB 1 }

      efmCuConformance OBJECT IDENTIFIER ::= { efmCuMIB 2 }



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      -- Groups in the module

      efmCuPort        OBJECT IDENTIFIER ::= { efmCuObjects 1 }

      efmCuPme         OBJECT IDENTIFIER ::= { efmCuObjects 2 }

      -- PCS Port group

      efmCuPortTable OBJECT-TYPE
        SYNTAX      SEQUENCE OF EfmCuPortEntry
        MAX-ACCESS  not-accessible
        STATUS      current
        DESCRIPTION
          "Table for EFMCu 2BaseTL/10PassTS (PCS) Ports."
        ::= { efmCuPort 1 }

      efmCuPortEntry OBJECT-TYPE
        SYNTAX      EfmCuPortEntry
        MAX-ACCESS  not-accessible
        STATUS      current
        DESCRIPTION
          "An entry in the EFMCu Port table."
        INDEX  { ifIndex }
        ::= { efmCuPortTable 1 }

      EfmCuPortEntry ::=
        SEQUENCE {
          efmCuStatus                      BITS,
          efmCuPortSide                    INTEGER,
          efmCuPAFSupported                TruthValue,
          efmCuRemotePAFSupported          TruthValue,
          efmCuPAFAdminState               INTEGER,
          efmCuPAFCapacity                 Integer32,
          efmCuRemotePAFCapacity           Integer32,
          efmCuPAFDiscoveryCode            PhysAddress
        }

      efmCuStatus  OBJECT-TYPE
        SYNTAX      BITS {
          noPMEAssigned(0),        -- no PME assigned to the PCS
          noPeerPMEPresent(1),     -- no peer PME present
          lossOfSignal(2),         -- Loss of Signal
          lossOfPower (3),         -- Loss of Power
          lossOfFraming(4),        -- Loss of Framing
          lossOfRemoteFraming(5),  -- Remote Loss of Framing
          snrMgnDefect(6),         -- SNR Margin Violation
          snrMgnRemoteDefect(7),   -- Remote SNR Margin Violation
          lineAtnDefect(8),        -- Loop Attenuation Violation



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          lineAtnRemoteDefect(9),  -- Remote Loop Attenuation Violation
          deviceFault(10),         -- vendor-dependent diag fault
          configInitFailure(11),   -- configuration init. failure
          protocolInitFailure(12), -- protocol initialization failure
          subTypePMEMismatch(13),  -- Assigned PMEs Sub-type Mismatch
          pafDefect(14),           -- PAF related defect
        }
        MAX-ACCESS  read-only
        STATUS      current
        DESCRIPTION
          "EFMCu (PCS) port Status. This is a bitmap of possible
          conditions. The various bit positions are:
            noPMEAssigned       - no PME has been assigned to the PCS
                                  (in case of PAF)
            noPeerPMEPresent    - one or more PMEs in the aggregation
                                  group indicate no peer PME present
                                  (down)
            lossOfSignal        - one or more PMEs in the aggregation
                                  group indicate Loss of Signal
            lossOfPower         - one or more PMEs in the aggregation
                                  group indicate Loss of Power
            lossOfFraming       - one or more PMEs in the aggregation
                                  group indicate Loss of Framing
            lossOfRemoteFraming - one or more PMEs in the aggregation
                                  group indicate Remote Loss of Framing
            snrMgnDefect        - one or more PMEs in the aggregation
                                  group indicate SNR Margin Violation
            snrMgnRemoteDefect  - one or more PMEs in the aggregation
                                  group indicate Remote SNR Margin
                                  Violation
            lineAtnDefect       - one or more PMEs in the aggregation
                                  group indicate Loop Attenuation
                                  Violation
            lineAtnRemoteDefect - one or more PMEs in the aggregation
                                  group indicate Remote Loop
                                  Attenuation Violation
            deviceFault         - one or more PMEs in the aggregation
                                  group indicate vendor-dependent diag
                                  fault.
            configInitFailure   - one or more PMEs in the aggregation
                                  group indicate configuration
                                  initialization failure (e.g. the Peer
                                  PME could not support configuration
                                  requested during init).
            protocolInitFailure - one or more PMEs in the aggregation
                                  group indicate protocol
                                  initialization failure.
            pmeSubTypeMismatch  - PMEs in the aggregation group are not



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                                  of the same sub-type, e.g. PMEs with
                                  -O and -R subtype
            pafDefect           - PAF related defect
                                -- EdNote: Do we need that?
                                -- When do we clear this bit?

          This is intended to supplement aPHYCurrentStatus.
          This attribute partially maps to the Clause 30 variable
          aPHYCurrentStatus, supplementing it with additional values.

          If a Clause 45 MDIO Interface to the PCS is present, then this
          attribute consolidates various PMA/PMD registers, namely:
          TBD"
        REFERENCE
          "[802.3ah] 30.11.1.1.3"
        ::= { efmCuPortEntry 1 }

      efmCuPortSide  OBJECT-TYPE
        SYNTAX      INTEGER {
          subscriber(1),  -- -R sub-type
          office(2),      -- -O sub-type
          unknown(3)      -- no PMEs assigned or PME sub-type mismatch
        }
        MAX-ACCESS  read-only
        STATUS      current
        DESCRIPTION
          "EFM port mode of operation (subtype).
          The value of 'subscriber' indicates the port is designated as
          '-R' subtype (all PMEs assigned to this port are of subtype
          '-R').
          The value of the 'office' indicates that the port is
          designated as '-O' subtype (all PMEs assigned to this port are
          of subtype '-O').
          The value of 'unknown' indicates that the port has no assigned
          PMEs yet or that the assigned PMEs are not of the same side
          (subTypePMEMismatch).

          This attribute partially maps to the Clause 30 variable
          aPhyEnd"
        REFERENCE
           "[802.3ah] 61.1, 30.11.1.1.2"
        ::= { efmCuPortEntry 2 }

      efmCuPAFSupported  OBJECT-TYPE
        SYNTAX      TruthValue
        MAX-ACCESS  read-only
        STATUS      current
        DESCRIPTION



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          "PME Aggregation Function (PAF) Capability of the EFMCu port
          (PCS).
          This object has a value of true(1) when the PCS can perform
          PME aggregation on the available PMEs.
          Ports incapable of PAF shall return a value of false(2).

          This attribute maps to the Clause 30 variable aPAFSupported.

          If a Clause 45 MDIO Interface to the PCS is present,
          then this attribute will map to the PAF available bit in the
          10P/2B capability register."
        REFERENCE
          "[802.3ah] 61.2.2, 30.11.1.1.4, 45.2.3.17.1"
        ::= { efmCuPortEntry 4 }

      efmCuRemotePAFSupported  OBJECT-TYPE
        SYNTAX      TruthValue
        MAX-ACCESS  read-only
        STATUS      current
        DESCRIPTION
          "PME Aggregation Function (PAF) Capability of the EFMCu port
          (PCS) link partner.
          This object has a value of true(1) when the remote PCS can
          perform PME aggregation on the available PMEs.
          Ports incapable of PAF shall return a value of false(2).

          This attribute maps to the Clause 30 variable
          aRemotePAFSupported.

          If a Clause 45 MDIO Interface to the PCS is present, then
          this attribute maps to the Remote PAF supported bit in the
          10P/2B capability register."
        REFERENCE
          "[802.3ah] 61.2.2, 30.11.1.1.9, 45.2.3.17.2"
        ::= { efmCuPortEntry 5 }

      efmCuPAFAdminState  OBJECT-TYPE
        SYNTAX      INTEGER {
          enabled(1),
          disabled(2)
        }
        MAX-ACCESS  read-write
        STATUS      current
        DESCRIPTION
          "Administrative (desired) state of the PAF of the EFMCu port
          (PCS).
          When 'disabled', PME Aggregation will not be performed by the
          PCS.



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          When 'enabled', PAF will be performed by the PCS when the link
          is Up, even on a single PME, if PAF is supported.
          PCS ports incapable of supporting PAF shall return a value of
          'disabled'. Attempts to 'enable' such port shall be ignored.

          Changing PAFAdminState is a traffic disruptive operation and
          as such shall be done when the link is Down. Attempts to
          change this object shall be ignored if the link is Up or
          Initializing.

          This attribute maps to the Clause 30 variable aPAFAdminState.

          If a Clause 45 MDIO Interface to the PCS is present, then this
          attribute will map to the PAF enable bit in the 10P/2B PCS
          control register"
        REFERENCE
          "[802.3ah] 61.2.2, 45.2.3.18.3"
        ::= { efmCuPortEntry 6 }

      efmCuPAFCapacity  OBJECT-TYPE
        SYNTAX      Integer32 (1..32)
        MAX-ACCESS  read-only
        STATUS      current
        DESCRIPTION
          "Number of PMEs that can be aggregated by the local PAF.
          Some PMEs may not be present in a given PCS port instance,
          in which case the actual number of PMEs present is less than
          efmCuPAFCapacity.
          The number of PMEs present is never greater than
          aLocalPAFCapacity.

          This attribute maps to the Clause 30 variable
          aLocalPAFCapacity."
        REFERENCE
          "[802.3ah] 61.2.2, 30.11.1.1.6"
        ::= { efmCuPortEntry 7 }

      efmCuRemotePAFCapacity  OBJECT-TYPE
        SYNTAX      Integer32 (1..32)
        MAX-ACCESS  read-only
        STATUS      current
        DESCRIPTION
          "Number of PMEs that can be aggregated by the PAF of the peer
          Phy (PCS port).
          Some PMEs may not be present in a given PCS port instance,
          in which case the actual number of PMEs present is less than
          efmCuRemotePAFCapacity. The number of PMEs present is never
          greater than efmCuRemotePAFCapacity.



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          This attribute maps to the Clause 30 variable
          aRemotePAFCapacity."
        REFERENCE
          "[802.3ah] 61.2.2, 30.11.1.1.10"
        ::= { efmCuPortEntry 8 }

      efmCuPAFDiscoveryCode  OBJECT-TYPE
        SYNTAX      PhysAddress
        MAX-ACCESS  read-write
        STATUS      current
        DESCRIPTION
          "PAF Discovery Code of the EFMCu port (PCS).
          A unique 6 Byte long code used by the Discovery function, when
          PAF is supported.
          PCS ports incapable of supporting PAF shall return a value of
          all zeroes. Attempts to change this object shall be ignored in
          this case.
          This object must be instantiated for the -O subtype PCS before
          writing operations on the efmCuPAFRemoteDiscoveryCode
          (Set_if_Clear and Clear_if_Same) are performed by PMEs
          associated with the PCS.
          The value of this object is read-only for -R port subtypes.
          The initial value of this object for -R ports after reset
          is 0. This value may be changed as a result of writing
          operation on efmCuPAFRemoteDiscoveryCode variable of remote
          PME of -O subtype, connected to one of the local PMEs
          associated with the PCS.

          Discovery must be performed when the link is Down.
          Attempts to change this object MUST be rejected with the error
          inconsistentValue if the link is Up or Initializing.

          The PAF Discovery code maps to the local Discovery code
          variable in PAF (note that it does not have a corresponding
          Clause 45 register)"
        REFERENCE
          "[802.3ah] 61.2.2.8.3, 61.2.2.8.4, 45.2.6.6.1"
        ::= { efmCuPortEntry 9 }


      -- The PME group

      efmCuPmeTable OBJECT-TYPE
        SYNTAX      SEQUENCE OF EfmCuPmeEntry
        MAX-ACCESS  not-accessible
        STATUS      current
        DESCRIPTION
          "Table for EFMCu 2BaseTL/10PassTS PMEs (modems). Common part"



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        ::= { efmCuPme 1 }

      efmCuPmeEntry OBJECT-TYPE
        SYNTAX      EfmCuPmeEntry
        MAX-ACCESS  not-accessible
        STATUS      current
        DESCRIPTION
          "An entry in the EFMCu PME Common table."
        INDEX  { ifIndex }
        ::= { efmCuPmeTable 1 }

      EfmCuPmeEntry ::=
        SEQUENCE {
          efmCuPmeStatus                BITS,
          efmCuPmeSubTypesSupported     BITS,
          efmCuPmeSubType               INTEGER,
          efmCuPAFRemoteDiscoveryCode   PhysAddress,
          efmCuPmeOperProfile           INTEGER,
          efmCuPmeSnrMgn                Integer32,
          efmCuPmeRemoteSnrMgn          Integer32,
          efmCuPmeLineAtn               Integer32,
          efmCuPmeRemoteLineAtn         Integer32,
          efmCuPmeTCCodingErrors        Counter32,
          efmCuPmeThreshLineAtn         Integer32,
          efmCuPmeThreshSnrMgn          Integer32
        }

      efmCuPmeStatus  OBJECT-TYPE
        SYNTAX      BITS {
          downNotReady(0),        -- link is Down and not Ready
          downReady(1),           -- link is Down and Ready
          init(2),                -- link is Initializing
          up10PassTS(3),          -- link is Up as 10PassTS
          up2BaseTL(4),           -- link is Up as 2BaseTL
          unassigned(5),          -- detached from PCS in case of PAF
          lossOfSignal(6),        -- Loss of Signal
          lossOfPower(7),         -- Loss of Power
          lossOfFraming(8),       -- Loss of Framing
          lossOfRemoteFraming(9), -- Loss of Framing at peer PMD
          snrMgnDefect(10),       -- SNR Margin dropped below Threshold
          snrMgnRemoteDefect(11), -- Peer SNR Margin dropped below
                                  -- Threshold at the peer PME
          lineAtnDefect(12),      -- Line Attenuation exceeds Threshold
          lineAtnRemoteDefect(13),-- Remote Line Attenuation exceeds
                                  -- Threshold
          deviceFault(14),        -- Vendor-dependent diag or self-test
                                  -- fault
          configInitFailure(15),  -- configuration init. failure



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          protocolInitFailure(16) -- protocol initialization failure
        }
        MAX-ACCESS  read-only
        STATUS      current
        DESCRIPTION
          "Current PME link Status. This is a bitmap of possible
          conditions. The various bit positions are:

            downNotReady        - link is Down and the PME does not
                                  detect Handshake tones from its peer.
            downReady           - link is Down and the PME detects
                                  Handshake tones from its peer.
            init                - link is initializing
            up10PassTS          - link is Up as 10PassTS
            up2BaseTL           - link is Up as 2BaseTL
            unassigned          - disconnected from PCS in case of PAF
            lossOfSignal        - Loss of Signal
            lossOfPower         - Loss of Power
            lossOfFraming       - Loss of Framing for 10P or
                                  Loss of Sync word for 2B PMD or
                                  Loss of 64/65B Framing
            lossOfRemoteFraming - Loss of Synchronization word at the
                                  peer PMD
            snrMgnDefect        - SNR Margin dropped below the Threshold
            snrMgnRemoteDefect  - SNR Margin dropped below the Threshold
                                  at the peer PME
            lineAtnDefect       - Line Attenuation exceeds the Threshold
            lineAtnRemoteDefect - Line Attenuation exceeds the Threshold
                                  at the peer PME
            deviceFault         - Indicates a vendor-dependent
                                  diagnostic or self-test fault
                                  has been detected.
            configInitFailure   - configuration initialization failure.
                                  the Peer PME could not support
                                  configuration requested during init.
            protocolInitFailure - protocol initialization failure.
                                  due to incompatible protocol used by
                                  the Peer PME during init (that could
                                  happen if a peer PMD is G.SDHSL/VDSL
                                  modem for 2BaseTL/10PassTS PME
                                  respectively).

          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.

          This attribute partially maps to the Clause 30 variable



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          aPMEStatus.

          If a Clause 45 MDIO Interface to the PME is present, then this
          attribute consolidates information from various PMA/PMD
          registers, namely: PMA/PMD link status bits in 10P/2B PMA/PMD
          status register, Fault bit in PMA/PMD status 1 register,
          10P/2B PMA/PMD link loss register,
          10P outgoing indicator bits status register,
          10P incoming indicator bits status register,
          2B state defects register"
        REFERENCE
          "[802.3ah] 30.11.2.1.3, 45.2.1.12.4, 45.2.1.2.1, 45.2.1.38,
          45.2.1.39, 45.2.1.54"
        ::= { efmCuPmeEntry 1 }

      efmCuPmeSubTypesSupported  OBJECT-TYPE
        SYNTAX      BITS {
          ieee2BaseTL-O(1),
          ieee2BaseTL-R(2),
          ieee10PassTS-O(3),
          ieee10PassTS-R(4)
        }
        MAX-ACCESS  read-only
        STATUS      current
        DESCRIPTION
          "PME supported sub-types. This is a bitmap of possible
          sub-types. The various bit positions are:
            ieee2BaseTL-O    - PME is capable of operating as 2BaseTL-O
            ieee2BaseTL-R    - PME is capable of operating as 2BaseTL-R
            ieee10PassTS-O   - PME is capable of operating as 10PassTS-O
            ieee10PassTS-R   - PME is capable of operating as 10PassTS-R

          An actual mode of operation is determined by efmCuPmeSubType.

          If a Clause 45 MDIO Interface to the PCS is present, then this
          attribute combines the 10PASS-TS capable and 2BASE-TL capable
          bits in the 10P/2B PMA/PMD speed ability register and the
          CO supported and CPE supported bits in the 10P/2B PMA/PMD
          status register"
        REFERENCE
          "[802.3ah] 61.1, 45.2.1.4.1, 45.2.1.4.2, 45.2.1.12.2,
          45.2.1.12.3"
        ::= { efmCuPmeEntry 2 }

      efmCuPmeSubType  OBJECT-TYPE
        SYNTAX      INTEGER {
          ieee2BaseTL-O(1),
          ieee2BaseTL-R(2),



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          ieee10PassTS-O(3),
          ieee10PassTS-R(4),
          ieee2BaseTLor10PassTS-R(5),
          ieee2BaseTLor10PassTS-0(6),
          ieee10PassTSor2BseTL-0(7)
        }
        MAX-ACCESS  read-write
        STATUS      current
        DESCRIPTION
          "Administrative (desired) sub-type of the PME.
          Possible values are:
            ieee2BaseTL-O           - PME shall operate as 2BaseTL-O
            ieee2BaseTL-R           - PME shall operate as 2BaseTL-R
            ieee10PassTS-O          - PME shall operate as 10PassTS-O
            ieee10PassTS-R          - PME shall operate as 10PassTS-R
            ieee2BaseTLor10PassTS-R - PME shall operate as 2BaseTL-R or
                                      10PassTS-R. Actual value will be
                                      set by -O link partner during
                                      initialization (handshake).
            ieee2BaseTLor10PassTS-0 - PME shall operate as 2BaseTL-O
                                      (preferred) or 10PassTS-O. Actual
                                      value will be set during
                                      initialization depending on -R
                                      link partner capability (i.e. if
                                      -R is incapable of the preferred
                                      2BaseTL mode, 10PassTS will be
                                      used).
            ieee10PassTSor2BseTL-0   - PME shall operate as 10PassTS-O
                                      (preferred) or 2BaseTL-O. Actual
                                      value will be set during
                                      initialization depending on -R
                                      link partner capability (i.e. if
                                      -R is incapable of the preferred
                                      10PassTS mode, 2BaseTL will be
                                      used).

          Changing efmCuPmeSubType is a traffic disruptive operation
          and as such shall be done when the link is Down. Attempts to
          change this object shall be ignored if the link is Up or
          Initializing.
          Attempts to change this object to an unsupported subtype
          (see efmCuPmeSubTypesSupported) shall be ignored.

          If a Clause 45 MDIO Interface to the PMA/PMD is present, then
          this attribute combines values of the Port sub-type select
          bits and the PMA/PMD type selection bits in the 10P/2B
          PMA/PMD control register"
        REFERENCE



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          "[802.3ah] 61.1, 45.2.1.11.4, 45.2.1.11.7"
        ::= { efmCuPmeEntry 3 }

      efmCuPAFRemoteDiscoveryCode  OBJECT-TYPE
        SYNTAX      PhysAddress
        MAX-ACCESS  read-write
        STATUS      current
        DESCRIPTION
          "PAF Remote Discovery Code of the PME port at CO.
          A 6 Byte long Discovery Code of the peer PCS connected via
          the PME.
          Reading this object results in a Discovery Get operation.
          Writing a zero to this object results in a Discovery
          Clear_if_Same operation (the value of efmCuPAFDiscoveryCode
          at the peer PCS shall be the same as efmCuPAFDiscoveryCode of
          the local PCS associated with the PME for the operation to
          succeed).
          Writing a non-zero value to this object results in a
          Discovery Set_if_Clear operation.
          This object does not exist in CPE port subtypes. A zero length
          octet string shall be returned for CPE port subtypes and also
          when PAF aggregation is not enabled.

          Discovery must be performed when the link is Down.
          Attempts to change this object MUST be rejected with the error
          inconsistentValue, if the link is Up or Initializing.

          If a Clause 45 MDIO Interface to the PMA/PMD is present, then
          this attribute is a function of 10P/2B aggregation discovery
          control register, Discovery operation result bits in 10P/2B
          aggregation and discovery status register and
          10P/2B aggregation discovery code register"
        REFERENCE
          "[802.3ah] 61.2.2.8.4, 45.2.6.6-45.2.6.8"
        ::= { efmCuPmeEntry 4 }

      efmCuPmeOperProfile  OBJECT-TYPE
        SYNTAX      INTEGER {
          activateFailure(-2), -- link activation failure
          noLink(-1),          -- link is down or initializing
          profile0(0),         -- no match (individual PME params are
                               -- used)
          profile1(1),         -- profile1 of 2BaseTL or 10PassTS
          profile2(2),         -- profile2 of 2BaseTL or 10PassTS
          profile3(3),         -- profile3 of 2BaseTL or 10PassTS
          profile4(4),         -- profile4 of 2BaseTL or 10PassTS
          profile5(5),         -- profile5 of 2BaseTL or 10PassTS
          profile6(6),         -- profile6 of 2BaseTL or 10PassTS



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          profile7(7),         -- profile7 of 2BaseTL or 10PassTS
          profile8(8),         -- profile8 of 2BaseTL or 10PassTS
          profile9(9),         -- profile9 of 2BaseTL or 10PassTS
          profile10(10),       -- profile10 of 2BaseTL or 10PassTS
          profile11(11),       -- profile11 of 2BaseTL or 10PassTS
          profile12(12),       -- profile12 of 2BaseTL or 10PassTS
          profile12(13),       -- profile13 of 10PassTS
          profile12(14),       -- profile14 of 10PassTS
          profile12(15),       -- profile15 of 10PassTS
          profile12(16),       -- profile16 of 10PassTS
          profile12(17),       -- profile17 of 10PassTS
          profile12(18),       -- profile18 of 10PassTS
          profile12(19),       -- profile19 of 10PassTS
          profile12(20),       -- profile20 of 10PassTS
          profile12(21),       -- profile21 of 10PassTS
          profile12(22)        -- profile22 of 10PassTS
        }
        MAX-ACCESS  read-only
        STATUS      current
        DESCRIPTION
          "PME operating Profile. Possible values are:
           activateFailure     - link activation failure
           noLink              - link is down or initializing
           profile0            - no match (individual PME params are
                                 used)
           profile1            - profile1 of 2BaseTL or 10PassTS
           profile2            - profile2 of 2BaseTL or 10PassTS
           profile3            - profile3 of 2BaseTL or 10PassTS
           profile4            - profile4 of 2BaseTL or 10PassTS
           profile5            - profile5 of 2BaseTL or 10PassTS
           profile6            - profile6 of 2BaseTL or 10PassTS
           profile7            - profile7 of 2BaseTL or 10PassTS
           profile8            - profile8 of 2BaseTL or 10PassTS
           profile9            - profile9 of 2BaseTL or 10PassTS
           profile10           - profile10 of 2BaseTL or 10PassTS
           profile11           - profile11 of 2BaseTL or 10PassTS
           profile12           - profile12 of 2BaseTL or 10PassTS
           profile12           - profile13 of 10PassTS
           profile12           - profile14 of 10PassTS
           profile12           - profile15 of 10PassTS
           profile12           - profile16 of 10PassTS
           profile12           - profile17 of 10PassTS
           profile12           - profile18 of 10PassTS
           profile12           - profile19 of 10PassTS
           profile12           - profile20 of 10PassTS
           profile12           - profile21 of 10PassTS
           profile12           - profile22 of 10PassTS




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          The PME profile can be set by either writing to
          efmCuPme2BProfile or efmCuPme10PProfile objects for
          2BaseTL-O/10PassTS-O PMEs respectively, or by writing to the
          individual PME parameters (e.g. efmCuPme2BRegion,
          efmCuPme2BPower, efmCuPme2BDataRate and
          efmCuPme2BConstellation for 2BaseTL-O PME).

          This attribute partially maps to the aOperatingProfile
          variable in Clause 30."
        REFERENCE
          "[802.3ah] 30.11.2.1.7"
        ::= { efmCuPmeEntry 5 }

      efmCuPmeSnrMgn OBJECT-TYPE
        SYNTAX      Integer32(-127..128)
        UNITS       "dB"
        MAX-ACCESS  read-only
        STATUS      current
        DESCRIPTION
          "The current Signal-to-Noise Ratio (SNR) margin with respect
          to the received signal as perceived by the local PME.

          This attribute maps to the aPMESNRMgn variable in Clause 30.

          If a Clause 45 MDIO Interface is present, then this
          attribute maps to the 10P/2B RX SNR margin register."
        REFERENCE
          "[802.3ah] 30.11.2.1.4, 45.2.1.16"
        ::= { efmCuPmeEntry 6 }

      efmCuPmeRemoteSnrMgn OBJECT-TYPE
        SYNTAX      Integer32(-127..128)
        UNITS       "dB"
        MAX-ACCESS  read-only
        STATUS      current
        DESCRIPTION
          "The current SNR margin in dB with respect to the received
          signal, as perceived by the remote (link partner) PME.

          This object is not supported by -R port subtypes.

          If a Clause 45 MDIO Interface is present, then this
          attribute maps to the 10P/2B link partner RX SNR margin
          register."
        REFERENCE
          "[802.3ah] 45.2.1.17"
        ::= { efmCuPmeEntry 7 }




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      efmCuPmeLineAtn OBJECT-TYPE
        SYNTAX      Integer32(-127..128)
        UNITS       "dB"
        MAX-ACCESS  read-only
        STATUS      current
        DESCRIPTION
          "The current Line Attenuation in dB as perceived by the local
          PME.

          If a Clause 45 MDIO Interface is present, then this
          attribute maps to the Line Attenuation register"
        REFERENCE
          "[802.3ah] 45.2.1.18"
        ::= { efmCuPmeEntry 8 }

      efmCuPmeRemoteLineAtn OBJECT-TYPE
        SYNTAX      Integer32(-127..128)
        UNITS       "dB"
        MAX-ACCESS  read-only
        STATUS      current
        DESCRIPTION
          "The current Line Attenuation in dB as perceived by the remote
          (link partner) PME.

          This object is not supported by CPE port subtypes.

          If a Clause 45 MDIO Interface is present, then this
          attribute maps to the 20P/2B link partner Line Attenuation
          register."
        REFERENCE
          "[802.3ah] 45.2.1.19"
        ::= { efmCuPmeEntry 9 }

      efmCuPmeTCCodingErrors OBJECT-TYPE
        SYNTAX      Counter32
        MAX-ACCESS  read-only
        STATUS      current
        DESCRIPTION
          "A number of 64/65-octet encapsulation errors. This counter is
          incremented for each 64/65-octet encapsulation error detected
          by the 64/65-octet receive function.

          If a Clause 45 MDIO Interface to the PME TC is present, then
          this attribute maps to the TC coding violations register
          (see 45.2.6.12)."
        REFERENCE
          "[802.3ah] 61.3.3.1, 45.2.6.12"
        ::= { efmCuPmeEntry 10 }



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      efmCuPmeThreshLineAtn  OBJECT-TYPE
        SYNTAX  Integer32(-127..128)
        UNITS       "dB"
        MAX-ACCESS  read-write
        STATUS      current
        DESCRIPTION
          "Desired Line Attenuation Threshold for the 2B/10P PME.
           This object configures the line attenuation alarm threshold.
           When the current value of Line Attenuation reaches
           or exceeds this threshold, a efmCuPmeLineAtnCrossing
           notification MAY be generated.

          This object is writable for the CO subtype PMEs (-O).
          It is read-only for the CPE subtype (-R).

          Changing of the Line Attenuation Threshold must be performed
          when the link is Down. Attempts to change this object MUST be
          rejected with the error inconsistentValue, if the link is Up
          or Initializing.

          If a Clause 45 MDIO Interface to the PME is present, then this
          attribute will map to the Loop attenuation threshold bits in
          the 2B PMD line quality thresholds register"
        REFERENCE
          "[802.3ah] 45.2.1.36"
        ::= { efmCuPmeEntry 11 }

      efmCuPmeThreshSnrMgn  OBJECT-TYPE
        SYNTAX      Integer32(-127..128)
        UNITS       "dB"
        MAX-ACCESS  read-write
        STATUS      current
        DESCRIPTION
          "Desired SNR Margin Threshold for the 2B/10P PME.
           This object configures the SNR margin alarm threshold.
           When the current value of SNR Margin reaches
           or exceeds this threshold, a efmCuPmeSnrMgnCrossing
           notification MAY be generated.

          This object is writable for the CO subtype PMEs
          (2BaseTL-O/10PassTS-R). It is read-only for the CPE subtype
          (2BaseTL-R/10PassTS-R).

          Changing of the SNR Margin Threshold must be performed when
          the link is Down. Attempts to change this object MUST be
          rejected with the error inconsistentValue, if the link is Up
          or Initializing.




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          If a Clause 45 MDIO Interface to the PME is present, then this
          attribute will map to the SNR margin threshold bits in the
          2B PMD line quality thresholds register"
        REFERENCE
          "[802.3ah] 45.2.1.36"
        ::= { efmCuPmeEntry 12 }

     -- PME Notifications Group

      efmCuPmeNotifications OBJECT IDENTIFIER ::= { efmCuPme 2 }

      -- EdNote: Add more notificatoins here, for example
      --      efmCuPmeTCCodingErrors,
      --      efmCuPmePerfES,
      --      efmCuPmePerfSES,
      --      efmCuPmePerfCRCanomalies,
      --      efmCuPmePerfLOSWS,
      --      efmCuPmePerfUAS,
      --      efmCuPmeDeviceFault,
      --      efmCuPmeLocalPowerLoss

      efmCuPmeLineDefect NOTIFICATION-TYPE
        OBJECTS {
          -- ifINdex is not needed here since we are under specific PME
          efmCuPmeStatus
          -- EdNote: should I add anything else here?
        }
        STATUS      current
        DESCRIPTION
          "This notification indicates that a line defect (e.g.
          lossOfSignal)  has been detected by the PME, preventing it
          from been operational.
          Note that in case of PAF, PME line defect may not cause
          the whole PHY to go down, it will just cause bandwidth
          degradation."
           -- EdNote: add throttling limitations here
        ::= { efmCuPmeNotifications 1 }

      efmCuPmeLineAtnCrossing NOTIFICATION-TYPE
        OBJECTS {
          efmCuPmeLineAtn,
          efmCuPmeThreshLineAtn
        }
        STATUS      current
        DESCRIPTION
          "This notification indicates that the loop attenuation
          threshold (as per the efmCuPmeThreshLineAtn
          value) has been reached/exceeded for the 2Base-TL/10Pass-TS



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          PME."
          -- EdNote: add throttling limitations here
        ::= { efmCuPmeNotifications 2 }

      efmCuPmeRemoteLineAtnCrossing NOTIFICATION-TYPE
        OBJECTS {
          efmCuPmeRemoteLineAtn,
          efmCuPmeThreshLineAtn
        }
        STATUS      current
        DESCRIPTION
          "This notification indicates that the loop attenuation
          threshold (as per the efmCuPmeThreshLineAtn
          value) has been reached/exceeded for the 2Base-TL/10Pass-TS
          PME link partner."
          -- EdNote: add throttling limitations here
        ::= { efmCuPmeNotifications 3 }

      efmCuPmeSnrMgnCrossing NOTIFICATION-TYPE
        OBJECTS {
          efmCuPmeSnrMgn,
          efmCuPmeThreshSnrMgn
        }
        STATUS      current
        DESCRIPTION
          "This notification indicates that the SNR margin threshold (as
          per the efmCuPmeThreshSnrMgn value) has been
          reached/exceeded for the 2Base-TL/10Pass-TS PME."
          -- EdNote: add throttling limitations here
        ::= { efmCuPmeNotifications 4 }

      efmCuPmeRemoteSnrMgnCrossing NOTIFICATION-TYPE
        OBJECTS {
          efmCuPmeRemoteSnrMgn,
          efmCuPmeThreshSnrMgn
        }
        STATUS     current
        DESCRIPTION
          "This notification indicates that the SNR margin threshold (as
          per the efmCuPmeThreshSnrMgn value) has been
          reached/exceeded for the 2Base-TL/10Pass-TS PME link partner."
          -- EdNote: add throttling limitations here
        ::= { efmCuPmeNotifications 5 }

     -- 2BaseTL specific PME group

      efmCuPme2BTable OBJECT-TYPE
        SYNTAX      SEQUENCE OF EfmCuPme2BEntry



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        MAX-ACCESS  not-accessible
        STATUS      current
        DESCRIPTION
          "Table for EFMCu 2BaseTL PMEs (modems)."
        ::= { efmCuPme 3 }

      efmCuPme2BEntry OBJECT-TYPE
        SYNTAX      EfmCuPme2BEntry
        MAX-ACCESS  not-accessible
        STATUS      current
        DESCRIPTION
          "An entry in the EFMCu 2BaseTL PME table."
        AUGMENTS { efmCuPmeEntry }
        ::= { efmCuPme2BTable 1 }

      EfmCuPme2BEntry ::=
        SEQUENCE {
          efmCuPme2BProfile                BITS,
          efmCuPme2BRegion                 INTEGER,
          efmCuPme2BPower                  Integer32,
          efmCuPme2BDataRate               Integer32,
          efmCuPme2BConstellation          INTEGER
        }

      efmCuPme2BProfile  OBJECT-TYPE
        SYNTAX      BITS { -- Rate    Power  Region   Constellation
                           -- (Kbps)  (dBm)
          profile0(0),     -- Undefined (individual PME params are used)
          profile1(1),     -- 5696    13.5   Annex A  32-TCPAM
          profile2(2),     -- 3072    13.5   Annex A  32-TCPAM
          profile3(3),     -- 2048    13.5   Annex A  16-TCPAM
          profile4(4),     -- 1024    13.5   Annex A  16-TCPAM
          profile5(5),     -- 704     13.5   Annex A  16-TCPAM
          profile6(6),     -- 512     13.5   Annex A  16-TCPAM
          profile7(7),     -- 5696    14.5   Annex B  32-TCPAM
          profile8(8),     -- 3072    14.5   Annex B  32-TCPAM
          profile9(9),     -- 2048    14.5   Annex B  16-TCPAM
          profile10(10),   -- 1024    13.5   Annex B  16-TCPAM
          profile11(11),   -- 704     13.5   Annex B  16-TCPAM
          profile12(12)    -- 512     13.5   Annex B  16-TCPAM
        }
        MAX-ACCESS  read-write
        STATUS      current
        DESCRIPTION
          "2BaseTL PME complete Profile bitmap, instantiating
          individual PME parameters: efmCuPme2BRegion, efmCuPme2BPower,
          efmCuPme2BDataRate and efmCuPme2BConstellation as specified in
          802.3ah Annex 63A.



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          The value of profile0 is returned, when any of the individual
          PME parameters are modified directly by modifying a
          corresponding variable.
          Up to 6 profiles can be specified simultaneously (belonging to
          the same Annex. In case of multiple profiles the highest
          attainable profile will be selected as operating profile.
          This object is writable for the CO subtype PMEs (2BaseTL-O).
          It is read-only for the CPE subtype (2BaseTL-R).

          Changing PME profile must be performed when the link is
          Down. Attempts to change this object MUST be rejected with
          the error inconsistentValue, if the link is Up or
          Initializing.

          This attribute maps to aProfileSelect variable in Clause 30."
        REFERENCE
          "[802.3ah] Annex 63A, 30.11.2.1.6"
        ::= { efmCuPme2BEntry 1 }

      efmCuPme2BRegion  OBJECT-TYPE
        SYNTAX      INTEGER {
          regionA(1),  -- Annex A
          regionB(2),  -- Annex B
          regionC(3)   -- Annex C
        }
        MAX-ACCESS  read-write
        STATUS      current
        DESCRIPTION
          "Desired Power Spectral Density (PSD) Regional setting as
          specified in Regional Annex of [ITU-T G.991.2] to operate
          under.
          This object is writable for the CO subtype PMEs (2BaseTL-O).
          It is read-only for the CPE subtype (2BaseTL-R).

          Possible values for this object are:
            regionA      -- Annex A
            regionB      -- Annex B
            regionC      -- Annex C

          Changing Regional Annex must be performed when the link is
          Down. Attempts to change this object MUST be rejected with
          the error inconsistentValue, if the link is Up or
          Initializing.

          If a Clause 45 MDIO Interface to the PME is present, then this
          attribute maps to the Region bits in the 2B general
          parameter register."
        REFERENCE



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          "[802.3ah] 45.2.1.42"
        ::= { efmCuPme2BEntry 2 }

      efmCuPme2BPower  OBJECT-TYPE
        SYNTAX      Integer32(10..42)
        UNITS       "0.5 dBm"
        MAX-ACCESS  read-write
        STATUS      current
        DESCRIPTION
          "Desired Signal Transmit Power. Multiple of 0.5dBm.
          This object is writable for the CO subtype PMEs (2BaseTL-O).
          It is read-only for the CPE subtype (2BaseTL-R).

          Changing of the Signal Transmit Power must be performed when
          the link is Down. Attempts to change this object MUST be
          rejected with the error inconsistentValue, if the link is Up
          or Initializing.

          If a Clause 45 MDIO Interface to the PME is present, then this
          attribute will map to the Power1 bits in the 2B PMD
          parameters register"
        REFERENCE
          "[802.3ah] 45.2.1.43"
        ::= { efmCuPme2BEntry 3 }

      efmCuPme2BDataRate  OBJECT-TYPE
        SYNTAX  Integer32(0..5696)
        UNITS       "Kbps"
        MAX-ACCESS  read-write
        STATUS      current
        DESCRIPTION
          "Desired 2BaseTL PME Data Rate.
          The rate is fixed when the value is n x 64Kbps, where n=3..60
          for 16-TCPAM and n=12..89 for 32-TCPAM. The value of 0 means
          that data rate is not fixed but is adaptive and should be set
          to the maximum attainable rate during line probing.
          This object is writable for the CO subtype PMEs (2BaseTL-O).
          It is read-only for the CPE subtype (2BaseTL-R).

          Changing of the Data Rate must be performed when the
          link is Down. Attempts to change this object MUST be rejected
          with the error inconsistentValue, if the link is Up or
          Initializing.

          If a Clause 45 MDIO Interface to the PME is present, then this
          attribute maps to the Min/Max Data Rate1 bits in the 2B PMD
          parameters register."
        REFERENCE



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          "[802.3ah] 45.2.1.43"
        ::= { efmCuPme2BEntry 4 }

      efmCuPme2BConstellation  OBJECT-TYPE
        SYNTAX      INTEGER {
          tcpam16(1), -- 16-TCPAM
          tcpam32(2)  -- 32-TCPAM
        }
        MAX-ACCESS  read-write
        STATUS      current
        DESCRIPTION
          "Desired TCPAM Constellation of the 2BaseTL PME.
          This object is writable for the CO subtype PMEs (2BaseTL-O).
          It is read-only for the CPE subtype (2BaseTL-R).

          Changing Constellation must be performed when the link is
          Down. Attempts to change this object MUST be rejected with
          the error inconsistentValue, if the link is Up or
          Initializing.

          If a Clause 45 MDIO Interface to the PME is present, then this
          attribute map to the Constellation1 bits in the 2B general
          parameter register."
        REFERENCE
           "[802.3ah] 45.2.1.43"
        ::= { efmCuPme2BEntry 5 }

     -- 10PassTS specific PME group

      efmCuPme10PTable OBJECT-TYPE
        SYNTAX      SEQUENCE OF EfmCuPme10PEntry
        MAX-ACCESS  not-accessible
        STATUS      current
        DESCRIPTION
          "Table for EFMCu 10PassTS PMEs (modems)."
        ::= { efmCuPme 4 }

      efmCuPme10PEntry OBJECT-TYPE
        SYNTAX      EfmCuPme10PEntry
        MAX-ACCESS  not-accessible
        STATUS      current
        DESCRIPTION
          "An entry in the EFMCu 10PassTS PME table."
        AUGMENTS { efmCuPmeEntry }
        ::= { efmCuPme10PTable 1 }

      EfmCuPme10PEntry ::=
        SEQUENCE {



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          efmCuPme10PProfile                INTEGER,
          efmCuPme10PBandplanPSDMaskProfile INTEGER,
          efmCuPme10PUPBOReferenceProfile   INTEGER,
          efmCuPme10PBandNotchProfiles      BITS,
          efmCuPme10PPayloadURateProfile    INTEGER,
          efmCuPme10PPayloadDRateProfile    INTEGER,
          efmCuPme10PElectricalLength       Integer32
          -- EdNote: To be continued
        }

      efmCuPme10PProfile  OBJECT-TYPE
        SYNTAX  INTEGER {-- Bandplan UPBO BandNotch   DRate URate
                         -- PSDMask# p#   p#          p#    p#
          profile0(0),   -- Undefined (individual PME Params are used)
          profile1(1),   -- 1        3    2,6,10,11    20    20(default)
          profile2(2),   -- 13       5    0            20    20
          profile3(3),   -- 1        1    0            20    20
          profile4(4),   -- 16       0    0           100   100
          profile5(5),   -- 16       0    0            70    50
          profile6(6),   -- 6        0    0            50    10
          profile7(7),   -- 17       0    0            30    30
          profile8(8),   -- 8        0    0            30     5
          profile9(9),   -- 4        0    0            25    25
          profile10(10), -- 4        0    0            15    15
          profile11(11), -- 23       0    0            10    10
          profile12(12), -- 23       0    0             5     5
          profile13(13), -- 16       0    2,5,9,11    100   100
          profile14(14), -- 16       0    2,5,9,11     70    50
          profile15(15), -- 6        0    2,6,10,11    50    10
          profile16(16), -- 17       0    2,5,9,11     30    30
          profile17(17), -- 8        0    2,6,10,11    30     5
          profile18(18), -- 4        0    2,6,10,11    25    25
          profile19(19), -- 4        0    2,6,10,11    15    15
          profile20(20), -- 23       0    2,5,9,11     10    10
          profile21(21)  -- 23       0    2,5,9,11      5     5
          profile21(22)  -- 30       0    0           200    50
          }
        MAX-ACCESS  read-write
        STATUS      current
        DESCRIPTION
          "10PassTS PME complete profile, instantiating
          individual PME parameters: efmCuPme10PBandplanPSDMaskProfile,
          efmCuPme10PUPBOReferenceProfile, efmCuPme10PBandNotchProfile,
          efmCuPme10PUDataRateProfile and efmCuPme10PDRateProfile as
          specified in 802.3ah Annex 62B.3.
          The value of profile0 is returned, when any of the individual
          PME parameters are modidifed directly by modifying a
          corresponding variable.



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          This object is writable for the CO subtype PMEs (10PassTS-O).
          It is read-only for the CPE subtype (10PassTS-R).

          Changing PME profile must be performed when the link is
          Down. Attempts to change this object MUST be rejected with
          the error inconsistentValue, if the link is Up or
          Initializing.

          This attribute maps to the aProfileSelect variable in Clause
          30."
        REFERENCE
          "[802.3ah] 62B.3, 30.11.2.1.6"
        ::= { efmCuPme10PEntry 1 }

      efmCuPme10PBandplanPSDMaskProfile  OBJECT-TYPE
        SYNTAX  INTEGER {-- PSD Mask                 Bands      Bandplan
          profile1(1),   -- T1.424/T-U P1 FTTCab.M1  x/D/U/D/U  A
          profile2(2),   -- T1.424/T-U P1 FTTEx.M1
          profile3(3),   -- T1.424/T-U P1 FTTCab.M2
          profile4(4),   -- T1.424/T-U P1 FTTEx.M2
          profile5(5),   -- T1.424/T-U P1 FTTCab.M1  D/D/U/D/U
          profile6(6),   -- T1.424/T-U P1 FTTEx.M1
          profile7(7),   -- T1.424/T-U P1 FTTCab.M2
          profile8(8),   -- T1.424/T-U P1 FTTEx.M2
          profile9(9),   -- T1.424/T-U P1 FTTCab.M1  U/D/U/D/x
          profile10(10), -- T1.424/T-U P1 FTTEx.M1
          profile11(11), -- T1.424/T-U P1 FTTCab.M2
          profile12(12), -- T1.424/T-U P1 FTTEx.M2
          profile13(13), -- TS1 101 270-1 Pcab.M1.A  x/D/U/D/U  B
          profile14(14), -- TS1 101 270-1 Pcab.M1.B
          profile15(15), -- TS1 101 270-1 Pex.P1.M1
          profile16(16), -- TS1 101 270-1 Pex.P2.M1
          profile17(17), -- TS1 101 270-1 Pcab.M2
          profile18(18), -- TS1 101 270-1 Pex.P1.M2
          profile19(19), -- TS1 101 270-1 Pex.P2.M2
          profile20(20), -- TS1 101 270-1 Pcab.M1.A  U/D/U/D/x
          profile21(21), -- TS1 101 270-1 Pcab.M1.B
          profile22(22), -- TS1 101 270-1 Pex.P1.M1
          profile23(23), -- TS1 101 270-1 Pex.P2.M1
          profile24(24), -- TS1 101 270-1 Pcab.M2
          profile25(25), -- TS1 101 270-1 Pex.P1.M2
          profile26(26), -- TS1 101 270-1 Pex.P2.M2
          profile27(27), -- G.993.1 F.1.2.1 (VDSLoPOTS) x/D/U/D/U  F
          profile28(28), -- G.993.1 F.1.2.2 (VDSLoTCM-ISDN)
          profile29(29)  -- G.993.1 F.1.2.3 (PSD reduction)
        }
        MAX-ACCESS  read-write
        STATUS      current



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        DESCRIPTION
          "10PassTS PME Bandplan and PSD Mask profile,
          as specified in 802.3ah Annex 62A.
          This object is writable for the CO subtype PMEs (10PassTS-O).
          It is read-only for the CPE subtype (10PassTS-R).

          Changing PME Bandplan and PSD MAsk profile must be performed
          when the link is Down. Attempts to change this object MUST be
          rejected with the error inconsistentValue, if the link is Up
          or Initializing.

          This attribute maps to the aBandplanPSDMaskProfile variable
          in Clause 30."
        REFERENCE
          "[802.3ah] Annex 62A, 30.5.1.1.22"
        ::= { efmCuPme10PEntry 2 }

      efmCuPme10PUPBOReferenceProfile  OBJECT-TYPE
        SYNTAX  INTEGER {-- Reference PSD
          profile1(1),   -- T1.424/T-U         Noise A M1
          profile2(2),   -- T1.424/T-U         Noise A M2
          profile3(3),   -- T1.424/T-U         Noise F M1
          profile4(4),   -- T1.424/T-U         Noise F M2
          profile5(5),   -- ETSI TS 101 270-1  Noise A&B
          profile6(6),   -- ETSI TS 101 270-1  Noise C
          profile7(7),   -- ETSI TS 101 270-1  Noise D
          profile8(8),   -- ETSI TS 101 270-1  Noise E
          profile9(9)    -- ETSI TS 101 270-1  Noise F
        }
        MAX-ACCESS  read-write
        STATUS      current
        DESCRIPTION
          "10PassTS PME Upstream Power Back-Off (UPBO) Reference PSD
          Profile, as specified in 802.3ah Annex 62A.
          This object is writable for the CO subtype PMEs (10PassTS-O).
          It is read-only for the CPE subtype (10PassTS-R).

          Changing UPBO Reference profile must be performed
          when the link is Down. Attempts to change this object MUST be
          rejected with the error inconsistentValue, if the link is Up
          or Initializing.

          This attribute maps to the aUPBOReferenceProfile variable
          in Clause 30."
        REFERENCE
          "[802.3ah] Annex 62A.3.4, 30.5.1.1.23"
        ::= { efmCuPme10PEntry 3 }




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      efmCuPme10PBandNotchProfiles  OBJECT-TYPE
        SYNTAX  BITS {  -- G.991.3  T1.424/T-U TS101 270-1 StartF EndF
                        -- Table    Table      Table       (MHz)  (MHz)
          profile0(0),  -- no profile
          profile1(1),  -- F-5 #01  -          -           1.810  1.825
          profile2(2),  -- 6-2      15-1       17          1.810  2.000
          profile3(3),  -- F-5 #02  -          -           1.907  1.912
          profile4(4),  -- F-5 #03  -          -           3.500  3.575
          profile5(5),  -- 6-2      -          17          3.500  3.800
          profile6(6),  -- -        15-1       -           3.500  4.000
          profile7(7),  -- F-5 #04  -          -           3.747  3.754
          profile8(8),  -- F-5 #05  -          -           3.791  3.805
          profile9(9),  -- 6-2      -          17          7.000  7.100
          profile10(10),-- F-5 #06  15-1       -           7.000  7.300
          profile11(11) -- 6-2      15-1       1           10.100 10.150
        }
        MAX-ACCESS  read-write
        STATUS      current
        DESCRIPTION
          "10PassTS PME Egress Control Band Notch Profile bitmap,
          as specified in 802.3ah Annex 62A.
          This object is writable for the CO subtype PMEs (10PassTS-O).
          It is read-only for the CPE subtype (10PassTS-R).
          Any combination of profiles can be specified by ORing
          individual profiles, for example value of 0x0622 selects
          profiles 2,6,10 and 11.

          Changing Band Notch profiles must be performed when the link
          is Down. Attempts to change this object MUST be rejected with
          the error inconsistentValue, if the link is Up or
          Initializing.

          This attribute maps to the aBandNotchProfile variable
          in Clause 30."
        REFERENCE
          "[802.3ah] Annex 62A.3.5, 30.5.1.1.19"
        ::= { efmCuPme10PEntry 4 }

      efmCuPme10PPayloadURateProfile  OBJECT-TYPE
        SYNTAX      INTEGER {-- Upstream Payload Rate (Mbps)
          profile5(5),       -- 2.5
          profile10(10),     -- 5
          profile15(15),     -- 7.5
          profile20(20),     -- 10
          profile25(25),     -- 12.5
          profile30(30),     -- 15
          profile50(50),     -- 25
          profile70(70),     -- 35



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          profile100(100)    -- 50
        }
        MAX-ACCESS  read-write
        STATUS      current
        DESCRIPTION
          "10PassTS PME Upstream Payload Rate Profile,
          as specified in 802.3ah Annex 62A.
          This object is writable for the CO subtype PMEs (10PassTS-O).
          It is read-only for the CPE subtype (10PassTS-R).

          The SET operation sets a target for the PHY's Upstream Payload
          Bitrate as seen at the MII. If the payload rate of the
          selected profile cannot be achieved based on the loop
          environment, bandplan and PSD mask, the PHY shall drop the
          link.

          Changing Upstream Payload Rate Profile must be performed
          when the link is Down. Attempts to change this object MUST be
          rejected with the error inconsistentValue, if the link is Up
          or Initializing.

          This attribute maps to the aPayloadRateProfileUpstream
          variable in Clause 30."
        REFERENCE
          "[802.3ah] Annex 62A.3.6, 30.5.1.1.20"
        ::= { efmCuPme10PEntry 5 }

      efmCuPme10PPayloadDRateProfile  OBJECT-TYPE
        SYNTAX      INTEGER {-- Downstream Payload Rate (Mbps)
          profile5(5),       -- 2.5
          profile10(10),     -- 5
          profile15(15),     -- 7.5
          profile20(20),     -- 10
          profile25(25),     -- 12.5
          profile30(30),     -- 15
          profile50(50),     -- 25
          profile70(70),     -- 35
          profile100(100),   -- 50
          profile140(140),   -- 70
          profile200(200)    -- 100
        }
        MAX-ACCESS  read-write
        STATUS      current
        DESCRIPTION
          "10PassTS PME Downstream Payload Rate Profile,
          as specified in 802.3ah Annex 62A.
          This object is writable for the CO subtype PMEs (10PassTS-O).
          It is read-only for the CPE subtype (10PassTS-R).



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          The SET operation sets a target for the PHY's Downstream
          Payload Bitrate as seen at the MII. If the payload rate of
          the selected profile cannot be achieved based on the loop
          environment, bandplan and PSD mask, the PHY shall drop the
          link.

          Changing Downstream Payload Rate Profile must be performed
          when the link is Down. Attempts to change this object MUST be
          rejected with the error inconsistentValue, if the link is Up
          or Initializing.

          This attribute maps to the aPayloadRateProfileDownstream
          variable in Clause 30."
        REFERENCE
          "[802.3ah] Annex 62A.3.6, 30.5.1.1.21"
        ::= { efmCuPme10PEntry 6 }

      efmCuPme10PElectricalLength  OBJECT-TYPE
        SYNTAX      Integer32(0..8192|65535)
        UNITS       "m"
        MAX-ACCESS  read-only
        STATUS      current
        DESCRIPTION
          "Electrical Length in meters as perceived by the 10PassTS PME
          after the link is established.
          The value of 65535 is returned if the link is Down or
          Initializing or the PME is unable to estimate the Electrical
          Length.

          If a Clause 45 MDIO Interface to the PME is present, then this
          attribute maps to the 10P Electrical Length register"
        REFERENCE
          "[802.3ah] 45.2.1.21"
        ::= { efmCuPme10PEntry 7 }


     -- efmCuAvailableStackTable for use in Discovery

      efmCuAvailableStackTable  OBJECT-TYPE
        SYNTAX      SEQUENCE OF EfmCuAvailableStackEntry
        MAX-ACCESS  not-accessible
        STATUS      current
        DESCRIPTION
          "This table, modeled after ifStackTable from [IF-MIB],
          contains information on the possible 'on-top-of'
          relationships between the multiple sub-layers of network
          interfaces (as opposed to actual relationships in
          ifStackTable).  In particular, it contains information on



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          which PCS ports (sub-layers) can possibly run 'on top of'
          which PMEs (sublayers), as determined by cross-connect
          capability of the EFMCu device, where each sub-layer
          corresponds to a conceptual row in the ifTable.  For example,
          when the PCS port with ifIndex value x can be connected
          to run on top of the PME with ifIndex value y, then this table
          contains:

            efmCuAvailableStackStatus.x.y=active

          For each ifIndex value, I, which identifies a PCS or PME
          interface, there are always at least two instantiated rows
          in this table associated with I.  For one of these rows, I
          is the value of efmCuAvailableStackHigherLayer; for the other,
          I is the value of efmCuAvailableStackLowerLayer.
          Note that there's always at least on PCS for each PME and at
          least one PME for each PCS in the EFMCu devices, with
          efmCuPAFCapacity and efmCuRemotePAFCapacity indicating
          maximum number of PMEs which can be aggregated by local and
          remote PCS port respectively.
          This table is ready only as it describes device capability"
        REFERENCE
          "ifStackTable of RFC 2863"
        ::= { efmCuObjects 3 }

      efmCuAvailableStackEntry  OBJECT-TYPE
        SYNTAX      EfmCuAvailableStackEntry
        MAX-ACCESS  not-accessible
        STATUS      current
        DESCRIPTION
          "Information on a particular relationship between two sub-
          layers, specifying that one sub-layer runs on 'top' of the
          other sub-layer.  Each sub-layer corresponds to a conceptual
          row in the ifTable."
        INDEX {
          efmCuAvailableStackHigherLayer,
          efmCuAvailableStackLowerLayer
        }
        ::= { efmCuAvailableStackTable 1 }

      EfmCuAvailableStackEntry ::=
         SEQUENCE {
           efmCuAvailableStackHigherLayer  InterfaceIndexOrZero,
           efmCuAvailableStackLowerLayer   InterfaceIndexOrZero,
           efmCuAvailableStackStatus       RowStatus
         }

      efmCuAvailableStackHigherLayer  OBJECT-TYPE



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        SYNTAX      InterfaceIndexOrZero
        MAX-ACCESS  not-accessible
        STATUS      current
        DESCRIPTION
          "The value of ifIndex corresponding to the higher sub-layer
          of the relationship, i.e., the sub-layer which runs on 'top'
          of the sub-layer identified by the corresponding instance of
          ifStackLowerLayer.  If there is no higher sub-layer (below
          the internetwork layer), then this object has the value 0."
        ::= { efmCuAvailableStackEntry 1 }


      efmCuAvailableStackLowerLayer  OBJECT-TYPE
        SYNTAX      InterfaceIndexOrZero
        MAX-ACCESS  not-accessible
        STATUS      current
        DESCRIPTION
          "The value of ifIndex corresponding to the lower sub-layer
          of the relationship, i.e., the sub-layer which runs 'below'
          the sub-layer identified by the corresponding instance of
          ifStackHigherLayer.  If there is no lower sub-layer, then
          this object has the value 0."
        ::= { efmCuAvailableStackEntry 2 }

      efmCuAvailableStackStatus  OBJECT-TYPE
        SYNTAX      RowStatus
        MAX-ACCESS  read-only
        STATUS      current
        DESCRIPTION
          "The status of the relationship between two sub-layers.

          This object is read only, unlike ifStackStatus, as it
          describes the device capability."
        ::= { efmCuAvailableStackEntry 3 }


     --
     -- Conformance Statements
     --

      efmCuGroups      OBJECT IDENTIFIER ::= { efmCuConformance 1 }

      efmCuCompliances OBJECT IDENTIFIER ::= { efmCuConformance 2 }

      -- Object Groups

      efmCuPortBasicGroup OBJECT-GROUP
        OBJECTS {



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          efmCuStatus,
          efmCuPortSide,
          efmCuPAFSupported
        }
        STATUS      current
        DESCRIPTION
          "A collection of objects required for all EFMCu ports."
        ::= { efmCuGroups 1 }

      efmCuPAFGroup OBJECT-GROUP
        OBJECTS {
          efmCuPAFAdminState,
          efmCuRemotePAFSupported,
          efmCuPAFDiscoveryCode,
          efmCuPAFRemoteDiscoveryCode,
          efmCuAvailableStackStatus
        }
        STATUS      current
        DESCRIPTION
          "A collection of objects supporting
          optional Aggregation features on EFMCu ports."
        ::= { efmCuGroups 2 }

      efmCuPmeGroup OBJECT-GROUP
        OBJECTS {
          efmCuPmeStatus,
          efmCuPmeSubTypesSupported,
          efmCuPmeSubType,
          efmCuPmeSnrMgn,
          efmCuPmeRemoteSnrMgn,
          efmCuPmeLineAtn,
          efmCuPmeRemoteLineAtn
        }
        STATUS      current
        DESCRIPTION
          "A collection of objects providing information about
          a 2BaseTL/10PassTS PME."
        ::= { efmCuGroups 3 }

      efmCuPmeAlarmConfGroup OBJECT-GROUP
        OBJECTS {
          efmCuPmeThreshLineAtn,
          efmCuPmeThreshSnrMgn
   --       efmCuPmeThreshES,
   --       efmCuPmethreshSES,
   --       efmCuPmeThreshCRCanomalies,
   --       efmCuPmeThreshLOSWS,
   --       efmCuPmeThreshUAS



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        }
        STATUS      current
        DESCRIPTION
          "A collection of objects that allow configuration of alarm
          thresholds for various performance parameters for 2B/10P PME."
        ::= { efmCuGroups 4 }

      efmCuPmeNotificationGroup NOTIFICATION-GROUP
          NOTIFICATIONS {
              efmCuPmeLineDefect,
              efmCuPmeLineAtnCrossing,
              efmCuPmeRemoteLineAtnCrossing,
              efmCuPmeSnrMgnCrossing,
              efmCuPmeRemoteSnrMgnCrossing
   --         efmCuPmePerfES,
   --         efmCuPmePerfSES,
   --         efmCuPmePerfCRCanomalies,
   --         efmCuPmePerfLOSWS,
   --         efmCuPmePerfUAS,
   --         efmCuPmeDeviceFault,
   --         efmCuPmeLocalPowerLoss
          }
          STATUS      current
          DESCRIPTION
            "This group supports notifications of significant conditions
            associated with EFMCu PMEs."
          ::= { efmCuGroups 5 }

      efmCuPme2BGroup OBJECT-GROUP
        OBJECTS {
          efmCuPme2BProfile,
          efmCuPme2BRegion,
          efmCuPme2BPower,
          efmCuPme2BDataRate,
          efmCuPme2BConstellation
        }
        STATUS      current
        DESCRIPTION
          "A collection of objects for configuration of a 2BaseTL PME."
        ::= { efmCuGroups 6 }

      efmCuPme10PGroup OBJECT-GROUP
        OBJECTS {
          efmCuPme10PProfile,
          efmCuPme10PBandplanPSDMaskProfile,
          efmCuPme10PUPBOReferenceProfile,
          efmCuPme10PBandNotchProfiles,
          efmCuPme10PPayloadURateProfile,



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          efmCuPme10PPayloadDRateProfile,
          efmCuPme10PElectricalLength
        }
        STATUS  current
        DESCRIPTION
          "A collection of objects for conifguration of a 10PassTS PME."
        ::= { efmCuGroups 7 }

     -- Compliance Statements

      efmCuCompliance MODULE-COMPLIANCE
        STATUS      current
        DESCRIPTION
          "The compliance statement for 2BaseTL/10PassTS interfaces.
          Compliance with the following external compliance statements
          is prerequisite:

          MIB Module             Compliance Statement
          ----------             --------------------
          IF-MIB                 ifCompliance3
          IF-INVERTED-STACK-MIB  ifInvCompliance
          EtherLike-MIB          dot3Compliance2
          MAU-MIB                mauModIfCompl3"

        MODULE  -- this module
          MANDATORY-GROUPS {
              efmCuPortBasicGroup,
              efmCuPmeGroup,
              efmCuPmeAlarmConfGroup,
              efmCuPmeNotificationGroup
          }

          GROUP       efmCuPme2BGroup
          DESCRIPTION
            "Support for this group is only required for implementations
            supporting 2Base-TL Phy."

          GROUP       efmCuPme10PGroup
          DESCRIPTION
            "Support for this group is only required for implementations
            supporting 10Pass-TS Phy."

          GROUP       efmCuPAFGroup
          DESCRIPTION
            "Support for this group is only required for implementations
            supporting PME Aggregation Function."

          OBJECT      efmCuPmeSubTypesSupported



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          SYNTAX      BITS {
            ieee2BaseTL-O(1),
            ieee2BaseTL-R(2),
            ieee10PassTS-O(3),
            ieee10PassTS-R(4)
          }
          DESCRIPTION
            "Support for all subtypes is not required. However at least
            one value SHALL be supported"

          OBJECT      efmCuPmeSubType
          MIN-ACCESS  read-only
          DESCRIPTION
            "Write access is not required (needed only for PMEs
            supporting more than a single subtype, e.g.
            ieee2BaseTL-O and ieee2BaseTS-R or ieee2BaseTL-R and
            ieee10PassTS-R)"

          -- EdNote: To be Continued

        ::= { efmCuCompliances 1 }
   END



5.  Security Considerations

   There is a number of managed objects defined in this MIB module that
   have a MAX-ACCESS clause of read-write or read-create.  Most objects
   are writeable only when the link is Down.  Writing to these objects
   can have potentially disruptive effects on network operation, for
   example:

   o  Changing of efmCuPortSide may lead to a potential locking of the
      link, as same PHYs of the same sub-type may not be able to
      exchange handshake messages.

   o  Changing of efmCuPAFAdminState to enabled may lead to a potential
      locking of the link, if the peer Phy does not support PAF.

   o  Changing of efmCuPAFDiscoveryCode before the discovery operation
      may lead to a wrongful discovery with possile multiple -O ports
      connecting to the same -R (both -O ports have the same Discovery
      register value) and similar cases.

   o  Changing any of the efmCuPmd2* or efmCuPmd10P* configuration may
      lead to anything from link quality and rate degradation to a
      complete disabling of the link.



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   o  Finally activation of a PME can cause a severe degradation of
      service for another EFMCu Phy whose PME(s) may be affected by the
      cross-talk from the newly activated PME.

   The user of this MIB module must therefore be aware that support for
   SET operations in a non-secure environment without proper protection
   can have a negative effect on network operations.

   The readable objects in this MIB module (i.e., those with MAX-ACCESS
   other than not-accessible) may be considered sensitive in some
   environments since, collectively, they provide information about the
   performance of network interfaces and can reveal some aspects of
   their configuration.  In particular since EFMCu can be carried over
   Unshielded Twisted Pair (UTP) voice grade copper in a bundle with
   other pairs belonging to another operator/customer, it is
   theoretically possible to evasdrop to an EFMCu transmission simply by
   "listening" to a cross-talk from an EFMCu pair, especially if the
   parameters of the EFMCu link in question are known.  In such
   environments it is important to control even GET and NOTIFY access to
   these objects and possibly even to encrypt their values when sending
   them over the network via SNMP.

   SNMP versions prior to SNMPv3 did not include adequate security.
   Even if the network itself is secure (for example by using IPSec),
   even then, there is no control as to who on the secure network is
   allowed to access and GET/SET (read/change/create/delete) the objects
   in this MIB module.

   It is RECOMMENDED that implementers consider the security features as
   provided by the SNMPv3 framework (see [RFC3410], section 8),
   including full support for the SNMPv3 cryptographic mechanisms (for
   authentication and privacy).

   Further, deployment of SNMP versions prior to SNMPv3 is NOT
   RECOMMENDED.  Instead, it is RECOMMENDED to deploy SNMPv3 and to
   enable cryptographic security.  It is then a customer/operator
   responsibility to ensure that the SNMP entity giving access to an
   instance of this MIB module is properly configured to give access to
   the objects only to those principals (users) that have legitimate
   rights to indeed GET or SET (change/create/delete) them.

6.  Acknowledgments

   Not yet.

7.  References





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7.1  Normative References

   [802.3ah]  IEEE, "Draft amendment to - Information technology -
              Telecommunications and information exchange between
              systems - Local and metropolitan area networks - Specific
              requirements - Part 3: Carrier sense multiple access with
              collision detection (CSMA/CD) access method and physical
              layer specifications - Media Access Control Parameters,
              Physical Layers and Management Parameters for subscriber
              access networks", IEEE Draft P802.3ah/D3.3, April 2004.

   [RFC2119]  Bradner, S., "Key words for use in RFCs to Indicate
              Requirement Levels", BCP 14, RFC 2119, March 1997.

   [RFC2570]  Case, J., Mundy, R., Partain, D. and B. Stewart,
              "Introduction to Version 3 of the Internet-standard
              Network Management Framework", RFC 2570, April 1999.

   [RFC2578]  McCloghrie, K., Perkins, D., Schoenwaelder, J., Case, J.,
              McCloghrie, K., Rose, M. and S. Waldbusser, "Structure of
              Management Information Version 2 (SMIv2)", STD 58, RFC
              2578, April 1999.

   [RFC2579]  McCloghrie, K., Perkins, D., Schoenwaelder, J., Case, J.,
              McCloghrie, K., Rose, M. and S. Waldbusser, "Textual
              Conventions for SMIv2", STD 58, RFC 2579, April 1999.

   [RFC2580]  McCloghrie, K., Perkins, D. and J. Schoenwaelder,
              "Conformance Statements for SMIv2", STD 58, RFC 2580,
              April 1999.

   [RFC3410]  Case, J., Mundy, R., Partain, D. and B. Stewart,
              "Introduction and Applicability Statements for
              Internet-Standard Management Framework", RFC 3410,
              December 2002.

7.2  Informative References

   [I-D.ietf-adslmib-vdsl]
              Ray, B. and R. Abbi, "Definitions of Managed Objects for
              Very High Speed Digital Subscriber  Lines (VDSL)",
              draft-ietf-adslmib-vdsl-12 (work in progress), October
              2003.

   [I-D.ietf-hubmib-efm-epon-mib]
              Khermosh, L., "Managed Objects for the Ethernet Passive
              Optical Networks", draft-ietf-hubmib-efm-epon-mib-00 (work
              in progress), December 2003.



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   [I-D.ietf-hubmib-efm-mib]
              Squire, M., "Ethernet in the First Mile (EFM) Common MIB",
              draft-squire-hubmib-efm-mib-00 (work in progress), October
              2003.

   [RFC2863]  McCloghrie, K. and F. Kastenholz, "The Interfaces Group
              MIB", RFC 2863, June 2000.

   [RFC2864]  McCloghrie, K. and G. Hanson, "The Inverted Stack Table
              Extension to the Interfaces Group MIB", RFC 2864, June
              2000.

   [RFC3276]  Ray, B. and R. Abbi, "Definitions of Managed Objects for
              High Bit-Rate DSL - 2nd generation (HDSL2) and Single-Pair
              High-Speed Digital Subscriber Line (SHDSL) Lines
              Processing", RFC 3276, May 2002.

   [RFC3635]  Flick, J., "Definitions of Managed Objects for the
              Ethernet-like Interface Types", RFC 3635, September 2003.

   [RFC3636]  Flick, J., "Definitions of Managed Objects for IEEE 802.3
              Medium Attachment Units (MAUs)", RFC 3636, September 2003.


Author's Address

   Edward Beili
   Actelis Networks
   Bazel 25
   Petach-Tikva
   Israel

   Phone: +972-3-924-3491
   EMail: [email protected]

















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