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Status: Verified (1)

RFC 3728, "Definitions of Managed Objects for Very High Speed Digital Subscriber Lines (VDSL)", February 2004

Source of RFC: adslmib (ops)

Errata ID: 1791

Status: Verified
Type: Technical

Reported By: Smadar Tauber
Date Reported: 2009-06-03
Verifier Name: Dan Romascanu
Date Verified: 2009-06-10

Section 4 says:

UNITS definition of the following MIB objects, should change from dBm to dB.
That will also fix the conflict with the units appearing in the Description of these MIB objects (dB).

vdslPhysCurrSnrMgn
vdslPhysCurrAtn
vdslLineConfDownMaxSnrMgn
vdslLineConfDownMinSnrMgn
vdslLineConfDownTargetSnrMgn
vdslLineConfUpMaxSnrMgn
vdslLineConfUpMinSnrMgn
vdslLineConfUpTargetSnrMgn

Example of original text:
   vdslPhysCurrSnrMgn OBJECT-TYPE
       SYNTAX       Integer32 (-127..127)
       UNITS        "0.25dBm"
       MAX-ACCESS   read-only
       STATUS       current
       DESCRIPTION
           "Noise Margin as seen by this Vtu with respect to its
           received signal in 0.25dB.  The effective range is
           -31.75 to +31.75 dB."
       REFERENCE    "T1E1.4/2000-009R3, Part 1, common spec"
        ::= { vdslPhysEntry 5 }

It should say:

Example of corrected text:
   vdslPhysCurrSnrMgn OBJECT-TYPE
       SYNTAX       Integer32 (-127..127)
       UNITS        "0.25dB"
       MAX-ACCESS   read-only
       STATUS       current
       DESCRIPTION
           "Noise Margin as seen by this Vtu with respect to its
           received signal in 0.25dB.  The effective range is
           -31.75 to +31.75 dB."
       REFERENCE    "T1E1.4/2000-009R3, Part 1, common spec"
        ::= { vdslPhysEntry 5 }

Notes:

This Errata replaces errata 1788 (rejected because it did not include list of all MIB objects having this problem and could not be edited).
It was decided by the adslmib Forum, that the solution should be as described by this Errata.

Status: Rejected (1)

RFC 3728, "Definitions of Managed Objects for Very High Speed Digital Subscriber Lines (VDSL)", February 2004

Source of RFC: adslmib (ops)

Errata ID: 1788

Status: Rejected
Type: Technical

Reported By: Smadar Tauber
Date Reported: 2009-05-24
Rejected by: Dan Romascanu
Date Rejected: 2009-06-03

Section Global says:

Example:
   vdslPhysCurrSnrMgn OBJECT-TYPE
       SYNTAX       Integer32 (-127..127)
       UNITS        "0.25dBm"
       MAX-ACCESS   read-only
       STATUS       current
       DESCRIPTION
           "Noise Margin as seen by this Vtu with respect to its
           received signal in 0.25dB.  The effective range is
           -31.75 to +31.75 dB."
       REFERENCE    "T1E1.4/2000-009R3, Part 1, common spec"
        ::= { vdslPhysEntry 5 }

   vdslPhysCurrAtn OBJECT-TYPE
       SYNTAX       Gauge32 (0..255)
       UNITS        "0.25dBm"
       MAX-ACCESS   read-only
       STATUS       current
       DESCRIPTION
           "Measured difference in the total power transmitted by
           the peer Vtu and the total power received by this Vtu.
           The effective range is 0 to +63.75 dB."


It should say:

UNITS statement (dBm) does not match units appearing in DESCRIPTION text (dB).

I think 'dB' are the right units for the objects above, but one can check that. Anyway, it is clear that there should not be the existing mismatch.

Same problem for more MIB objects in the RFC.


  


Notes:


--VERIFIER NOTES--
According to the discussions on the WG list, a new Errata report will be submitted including the complete list of objects affected by this change request.

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