CISCO-ADSL-DMT-LINE-MIB
AI MIB Summary
The CISCO-ADSL-DMT-LINE-MIB monitors Cisco-specific Discrete Multi-Tone (DMT) ADSL line characteristics, including aggregate data rates, bearer channel configurations, and per-bin signal-to-noise margins. It provides granular visibility into DMT-specific physical layer parameters such as symbol rates, line coding bin allocations, and error correction overhead distinct from the standard ADSL-LINE-MIB.
This MIB module serves as an enterprise-specific extension of the ADSL-LINE-MIB. The structure of this MIB module shadows the structure of the ADSL-LINE-MIB, table for table. The tables defined by this MIB module contain managed objects that meet the following criteria:
1) A managed object represents an attribute or characteristic specific to DMT (Digital Multi-Tone) modems.
2) The ADSL-DMT-LINE-MIB does not already contain a managed object representing the same information as a managed object.
Observe that entries contained by the tables in this MIB module do not augment the corresponding entries in the ADSL-LINE-MIB, as every modem represented by the ADSL-LINE-MIB is not necessarily a DMT modem.
Also observe that entries contained by the tables in this MIB module do not augment the corresponding entries in the ADSL-DMT-LINE-MIB, as this assumes that the ADSL-DMT-LINE-MIB defines tables that correspond to every table defined by the ADSL-LINE-MIB. At this time, this assumption does not hold true.
*** DEFINITIONS ***
AGGREGATE DATA RATE Data rate transmitted by an ADSL system in any one direction. This includes both net data rates and overhead used by the system, including:
- EOC
- AOC (ADSL Overhead Control channel)
- CRC (Cyclic Redundancy Check) check bytes
- fixed indicator bits for OAM (Operatings,
Administration, and Maintenance)
- synchronization control bytes
- capacity for bearer channel synchronization control
BEARER CHANNEL A user data stream of a specific data rate that is transported transparently by an ADSL system over one of the simplex channels (i.e., AS0, AS1, AS2, or AS3) or one of the duplex channels (i.e., LS0, LS1, or LS2).
BIN DMT line coding divides the frequency spectrum above the voice band of a line (i.e., 0-4 kHz) into 255 sub-carriers, each supporting 4.3125 kHz of bandwidth. A 'bin' refers to a single sub-carrier.
DATA SYMBOL RATE The average symbol rate (after allowing for the overhead of the sync symbol) at which symbols carrying data are transmitted; that is, 4000 symbols/second.
DOWNSTREAM The flow of data in the direction from the ATU-C to ATU-R.
LINE RATE The total data rate supported by a line; that is, (sum of b(i) for all i) * 4 kbps.
MARGIN (also referred to as 'SNR margin') The difference between the SNR of the received signal and the SNR required to provide a BER of 10E-7.
NET DATA RATE The data rate that is available for user data in any one direction; for the downstream direction this is the sum of the simplex and duplex bearer channel rates.
SPLITTER Filters that separate the high frequency signals (ADSL) from the voice band signals; (frequently called POTS splitters even though the voice band signals may comprise more than just POTS).
SYMBOL The number of bits the transmitter is capable of multiplexing and modulating over all the bins in a single signalling interval.
SYMBOL RATE The rate at which all symbols, including the sync symbol, are transmitted; that is, (69/68) * 4000 symbols/sec; contrasted with the data symbol rate.
TOTAL DATA RATE The aggregate data rate (q.v.) plus Reed-Solomon FEC overhead.
UPSTREAM The flow of data in the direction from the ATU-R to ATU-C.
*** ABBREVIATIONS, ACRONYMS, AND SYMBOLS ***
ADSL - Asymmetric Digital Subscriber Line.
ATM - Asynchronous Transfer Mode.
ATU-C - ADSL Transceiver Unit, Central Office end.
ATU-R - ADSL Transceiver Unit, Remote terminal end.
b(i) - the number of bits (i.e., constellation size) modulated on bin i.
BER - Bit Error Ratio.
DMT - Discrete MultiTone.
DSL - Digital Subscriber Line.
EOC - Embedded Operations Channel.
FEC - Forward Error Correction.
SNR - Signal-to-Noise Ratio.
STM - Synchronous Transfer Mode.
Main OID:
ciscoAdslDmtLineMIB.1.3.6.1.4.1.9.9.130
58
Objects
Active
Status
7
Dependencies
Imported Objects
Objects
58 total| Object Name |
|---|
ciscoAdslDmtLineMIBThis MIB module serves as an enterprise-specific extension of
the ADSL-LINE-MIB. The structure of this MIB module shadows
the structure of the ADSL-LINE-MIB, table for table. The tables
defined by this MIB module contain managed objects that meet the
following criteria:
1) A managed object represents an attribute or characteristic
specific to DMT (Digital Multi-Tone) modems.
2) The ADSL-DMT-LINE-MIB does not already contain a managed
object representing the same information as a managed
object.
Observe that entries contained by the tables in this MIB module
do not augment the corresponding entries in the ADSL-LINE-MIB,
as every modem represented by the ADSL-LINE-MIB is not
necessarily a DMT modem.
Also observe that entries contained by the tables in this MIB
module do not augment the corresponding entries in the
ADSL-DMT-LINE-MIB, as this assumes that the ADSL-DMT-LINE-MIB
defines tables that correspond to every table defined by the
ADSL-LINE-MIB. At this time, this assumption does not hold
true.
*** DEFINITIONS ***
AGGREGATE DATA RATE
Data rate transmitted by an ADSL system in any one
direction. This includes both net data rates and overhead
used by the system, including:
- EOC
- AOC (ADSL Overhead Control channel)
- CRC (Cyclic Redundancy Check) check bytes
- fixed indicator bits for OAM (Operatings,
Administration, and Maintenance)
- synchronization control bytes
- capacity for bearer channel synchronization control
BEARER CHANNEL
A user data stream of a specific data rate that is
transported transparently by an ADSL system over one of the
simplex channels (i.e., AS0, AS1, AS2, or AS3) or one of the
duplex channels (i.e., LS0, LS1, or LS2).
BIN
DMT line coding divides the frequency spectrum above the
voice band of a line (i.e., 0-4 kHz) into 255 sub-carriers,
each supporting 4.3125 kHz of bandwidth. A 'bin' refers to
a single sub-carrier.
DATA SYMBOL RATE
The average symbol rate (after allowing for the overhead of
the sync symbol) at which symbols carrying data are
transmitted; that is, 4000 symbols/second.
DOWNSTREAM
The flow of data in the direction from the ATU-C to ATU-R.
LINE RATE
The total data rate supported by a line; that is,
(sum of b(i) for all i) * 4 kbps.
MARGIN (also referred to as 'SNR margin')
The difference between the SNR of the received signal and
the SNR required to provide a BER of 10E-7.
NET DATA RATE
The data rate that is available for user data in any one
direction; for the downstream direction this is the sum of
the simplex and duplex bearer channel rates.
SPLITTER
Filters that separate the high frequency signals (ADSL)
from the voice band signals; (frequently called POTS
splitters even though the voice band signals may comprise
more than just POTS).
SYMBOL
The number of bits the transmitter is capable of
multiplexing and modulating over all the bins in a single
signalling interval.
SYMBOL RATE
The rate at which all symbols, including the sync
symbol, are transmitted; that is, (69/68) * 4000
symbols/sec; contrasted with the data symbol rate.
TOTAL DATA RATE
The aggregate data rate (q.v.) plus Reed-Solomon FEC
overhead.
UPSTREAM
The flow of data in the direction from the ATU-R to ATU-C.
*** ABBREVIATIONS, ACRONYMS, AND SYMBOLS ***
ADSL - Asymmetric Digital Subscriber Line.
ATM - Asynchronous Transfer Mode.
ATU-C - ADSL Transceiver Unit, Central Office end.
ATU-R - ADSL Transceiver Unit, Remote terminal end.
b(i) - the number of bits (i.e., constellation size) modulated
on bin i.
BER - Bit Error Ratio.
DMT - Discrete MultiTone.
DSL - Digital Subscriber Line.
EOC - Embedded Operations Channel.
FEC - Forward Error Correction.
SNR - Signal-to-Noise Ratio.
STM - Synchronous Transfer Mode. MODULE-IDENTITY .1.3.6.1.4.1.9.9.130 |
ciscoAdslDmtLineMIBObjects OBJECT IDENTIFIER .1.3.6.1.4.1.9.9.130.1 |
cAdslDmtLineTableThis table extends the adslLineTable and contains enterprise-
specific common attributes describing both ends of ADSL lines
supported by the system. SEQUENCE OF CAdslDmtLineEntry .1.3.6.1.4.1.9.9.130.1.1 |
cAdslDmtLineEntryA set of enterprise-specific common attributes describing both
ends of an ADSL line supported by the system. There exists an
entry for each ifEntry with an ifType of adsl(94). CAdslDmtLineEntry .1.3.6.1.4.1.9.9.130.1.1.1 |
cAdslDmtLineOverheadFramingThis object represents the negotiated overhead framing
structure being used by the ATU-C and ATU-R.ro DmtOverheadFraming .1.3.6.1.4.1.9.9.130.1.1.1.1 |
cAdslAtucDmtPhysTableThis table extends the adslAtucPhysTable and contains
enterprise-specific physical layer parameters for ATU-C
class devices supported by the system. SEQUENCE OF CAdslAtucDmtPhysEntry .1.3.6.1.4.1.9.9.130.1.2 |
cAdslAtucDmtPhysEntryA set of enterprise-specific physical-layer parameters for an
ATU-C class device supported by the system. There exists an
entry for each ifEntry with an ifType of adsl(94). CAdslAtucDmtPhysEntry .1.3.6.1.4.1.9.9.130.1.2.1 |
cAdslAtucDmtStateThe value of this object specifies the enterprise-specific
specific status of the ATU-C. If the value of adslAtucDMTState
is not 'other', then the value of this object is 'standard'.
If the value of adslAtucDMTState is 'other', and the ATU-C
is in an unrecognized state, then the value of this object
is 'unknown'. If the value of adslAtucDMTState is 'other',
and the ATU-C is not in an unrecognized state, then the value
of this object specifies the enterprise-specific state of the
ATU-C.ro Enumeration .1.3.6.1.4.1.9.9.130.1.2.1.1 |
cAdslAtucDmtChanTableThis table extends the adslAtucChanTable and contains
enterprise-specific physical layer parameters for the ATU-C
channels supported by the system. SEQUENCE OF CAdslAtucDmtChanEntry .1.3.6.1.4.1.9.9.130.1.4 |
cAdslAtucDmtChanEntryA set of enterprise-specific physical-layer parameters for an
ATU-C channel supported by the system. There exists an entry
for each ifEntry with an ifType of adslInterleave(124) or
adslFast(125). CAdslAtucDmtChanEntry .1.3.6.1.4.1.9.9.130.1.4.1 |
cAdslAtucDmtChanFecSizeThis object specifies the number of FEC redundancy bytes the
ATU-C appends to downstream on the corresponding channel. The
ATU-C can fallback from the initial value specified for the
corresponding channel (i.e., cAdslAtucDmtConfFastFecSize or
cAdslAtucInterleaveFecSize) based on the aggregate data rate
rate achieved during training.ro DmtFecSize UNITS "bytes" .1.3.6.1.4.1.9.9.130.1.4.1.1 |
cAdslAtucDmtChanCodewordSizeThis object specifies the actual number of symbols per
codeword being used by the ATU-C for downstream messages.
The ATU-C and ATU-R negotiate this value during the
training sequence. A value of 0 indicates the
automatic mode.ro DmtCodewordSize UNITS "symbols" .1.3.6.1.4.1.9.9.130.1.4.1.2 |
cAdslAturDmtChanTableThis table extends the adslAturChanTable and contains
enterprise-specific physical layer parameters for the ATU-R
channels supported by the system. SEQUENCE OF CAdslAturDmtChanEntry .1.3.6.1.4.1.9.9.130.1.5 |
cAdslAturDmtChanEntryA set of enterprise-specific physical-layer parameters for an
ATU-R channel supported by the system. There exists an entry
for each ifEntry with an ifType of adslInterleave(124) or
adslFast(125). CAdslAturDmtChanEntry .1.3.6.1.4.1.9.9.130.1.5.1 |
cAdslAturDmtChanFecSizeThis object specifies the number of FEC redundancy bytes the
ATU-R appends to upstream on the corresponding channel. The
ATU-C can fallback from the initial value specified for the
corresponding channel (i.e., cAdslAturDmtConfFastFecSize or
cAdslAturInterleaveFecSize) based on the aggregate data rate
achieved during training.ro DmtFecSize UNITS "bytes" .1.3.6.1.4.1.9.9.130.1.5.1.1 |
cAdslAturDmtChanCodewordSizeThis object specifies the actual number of symbols per
codeword being used by the ATU-R for upstream messages.
The ATU-C and ATU-R negotiate this value during the
training sequence.ro DmtCodewordSize UNITS "symbols" .1.3.6.1.4.1.9.9.130.1.5.1.2 |
cAdslDmtLineConfProfileTableThis table extends the adslLineConfProfileTable and contains
enterprise-specific ADSL DMT line configuration information. SEQUENCE OF CAdslDmtLineConfProfileEntry .1.3.6.1.4.1.9.9.130.1.14 |
cAdslDmtLineConfProfileEntryA configuration profile containing enterprise-specific ADSL DMT
line configuration information. CAdslDmtLineConfProfileEntry .1.3.6.1.4.1.9.9.130.1.14.1 |
cAdslLineDmtConfOperatingModeThis object specifies the line operating mode being employed
by the ADSL line. An ADSL line uses of one of two operating
modes:
- Automatic
An ATU-C that employs this operating mode automatically
detects the capabilities of the ATU-R and utilizes either
a startup sequence specified by G.992.1, G.992.2, or
T1.413-1998. This line operating mode is the default for
an ADSL line.
- Splitterless
This operating mode should no longer be used. It is
equivalent to the G.992.2 selection. Selecting this
mode will automatically map to the G992.2 mode. It is
appropriate in this case that both the ATU-C and ATU-R
support 'heavy' capability but the ATU-C side wishes to
force 'lite' operation. Selecting this mode will
automatically convert to the G992.2 mode.
- G992.1
This operating mode forces the used of the G994.1 startup
sequence and compliance to G992.1 operation.
- G992.2
This operating mode forces the use of the G994.1
startup sequence and compliance to G992.2 operation.
It is appropriate in this case that both the ATU-C and
ATU-R support 'heavy' capability but the ATU-C side
wishes to force 'lite' operation.
- T1.413
This operating mode forces the ATU-R to use the
T1.413-1998 startup sequence.rw Enumeration .1.3.6.1.4.1.9.9.130.1.14.1.1 |
cAdslLineDmtConfTrainingModeThis object specifies the mode employed by the ATU-C and
ATU-R when training against each other. One of two training
modes can be employed:
- Standard
An ATU-C initiates a training sequence using the method
defined by G.992.1, G.992.2, or T1.413-1998. This training
mode is the default for ADSL modems.
- Fast
An ATU-C initiates a vendor-specific training sequence that
can possibly provide a shorter training sequence.rw Enumeration .1.3.6.1.4.1.9.9.130.1.14.1.2 |
cAdslAtucDmtConfFastFecSizeThis object specifies the initial number of FEC redundancy
bytes the ATU-C appends to downstream frames transmitted over
the fast channel during the training sequence. The ATU-C can
fallback from this value depending on the aggregate data rate
achieved during training.
It is desirable to choose a large FEC size, thereby increasing
the chance of being able to correct errors in the data delivered
by a frame. However, additional FEC redundancy bytes increases
frame overhead, and thus frame latency.rw DmtFecSize UNITS "bytes" .1.3.6.1.4.1.9.9.130.1.14.1.3 |
cAdslAtucDmtConfInterleaveFecSizeThis object specifies the initial number of FEC redundancy
bytes the ATU-C appends to downstream frames transmitted over
the interleaved channel during the training sequence. The
ATU-C can fallback from this value depending on the aggregate
data rate achieved during training.
It is desirable to choose a large FEC size, thereby increasing
the chance of being able to correct errors in the data delivered
by a frame. However, additional FEC redundancy bytes increases
frame overhead, and thus frame latency.
The value of this object must be a integral multiple of the
value of cAdslAtucDmtConfCodewordSize.rw DmtFecSize UNITS "bytes" .1.3.6.1.4.1.9.9.130.1.14.1.4 |
cAdslAtucDmtConfCodewordSizeThis object specifies the number of symbols per codeword being
used by the ATU-C for downstream messages on an interleaved
channel during the training sequence. The ATU-C can fallback
from this value based on the aggregate data rate achieved during
training.
It is desirable to choose a large codeword size to minimize
overhead. However, increasing the codeword size increases the
possibility of not being able to correct errors in the data
delivered by a frame.rw DmtCodewordSize UNITS "symbols" .1.3.6.1.4.1.9.9.130.1.14.1.5 |
cAdslAtucDmtConfOverheadFramingThis object specifies the overhead framing structure which the
ATU-C will request when establishing a link with the ATU-R.
The value of 'structure0' is not valid.rw DmtOverheadFraming .1.3.6.1.4.1.9.9.130.1.14.1.6 |
cAdslAtucDmtConfBitSwapEnabledThis object specifies whether the ATU-C performs bitswapping.
Bitswapping attempts to maintain an acceptable margin for
each bin; equalizing the margin across all bins through bit
reallocation, thereby maximizing error performance.
The ATU-C performs bitswapping by monitoring the margin
measured for each bin by the transmitter:
1) If a bin's margin falls below 'target' and the difference,
between the margin and 'target' exceeds 'thresh(f)', then
the ATU-C marks the bin as a 'from' bin.
2) If a bin's margin exceeds 'target' and the difference
between the margin and 'target' exceeds 'thresh(t)', then
the ATU-C marks the bin as a 'to' bin.
Where: 'target' = adslAtucConfTargetSnrMgn
'thresh(f)' = cAdslAtucDmtConfBitSwapFrom
'thresh(t)' = cAdslAtucDmtConfBitSwapTo
The ATU-C attempts to equalize the margin across the bins by
swapping bits out of bins marked 'from' into bins marked 'to'.
When the ATU-C swaps a bit out of bin, it decreases its b(i).
Thus, the bins constellation is smaller, which increases its
margin. When the ATU-C swaps a bit into a bin, it increases
its b(i). Thus, the bins constellation is larger, which
decreases its margin.
In addition, the ATU-R may optionally implement its own
monitoring capability. The ATU-R uses this information to
request the ATU-C to perform bitswapping. When this object
is 'true', the ATU-C must be prepared to accept and properly
handle bitswap requests from the ATU-R.
While bitswapping has its obvious advantages, bitswapping can
have undesirable side effects. It can introduce errors on
lines prone to impulse noise. In this case, it may be desirable
to disable bitswapping.rw TruthValue (SNMPv2-TC) .1.3.6.1.4.1.9.9.130.1.14.1.7 |
cAdslAtucDmtConfBitSwapFromBitswapping attempts to maintain an acceptable margin for
each bin; equalizing the margin across all bins through bit
reallocation, thereby maximizing error performance.
The ATU-C performs bitswapping by monitoring the margin
measured for each bin by the transmitter. If a bin's margin
falls below adslAtucConfTargetSnrMgn and the difference
between the margin and adslAtucConfTargetSnrMgn exceeds
the value of this object, then the ATU-C marks a bin as
a 'from' bin.
The ATU-C attempts to equalize the margin across the bins by
swapping bits out of bins marked 'from' into bins marked 'to'.
When the ATU-C swaps a bit out of bin, it decreases its b(i).
Thus, the bins constellation is smaller. which increases its
margin. When the ATU-C swaps a bit into a bin, it increases
its b(i). Thus, the bins constellation is larger, which
decreases its margin.
If this value is too small, then the ATU-C may frequently
toggle the bit allocation on bins, and if impulse noise is
present, this can cause errors. If this value is too large,
then the ATU-C may not identify an adequate number of bins
that it can swap bits 'from', thereby decreasing the chances
for the ATU-C to equalize the margin across all the bins.
Unequalized margin across all the bins translates into poor
error performance.rw Integer32 .1.3.6.1.4.1.9.9.130.1.14.1.8 |
cAdslAtucDmtConfBitSwapToBitswapping attempts to maintain an acceptable margin for
each bin; equalizing the margin across all bins through bit
reallocation, thereby maximizing error performance.
The ATU-C performs bitswapping by monitoring the margin
measured for each bin by the transmitter. If a bin's margin
exceeds adslAtucConfTargetSnrMgn and the difference between
the margin and adslAtucConfTargetSnrMgn exceeds the value of
this object, then the ATU-C marks a bin as a 'to' bin.
The ATU-C attempts to equalize the margin across the bins by
swapping bits out of bins marked 'from' into bins marked 'to'.
When the ATU-C swaps a bit out of bin, it decreases its b(i).
Thus, the bins constellation is smaller. which increases its
margin. When the ATU-C swaps a bit into a bin, it increases
its b(i). Thus, the bins constellation is larger, which
decreases its margin.
If this value is too small, then the ATU-C may frequently
toggle the bit allocation on bins, and if impulse noise is
present, this can cause errors. If this value is too large,
then the ATU-C may not identify an adequate number of bins
that it can swap bits 'to', thereby decreasing the chances
for the ATU-C to equalize the margin across all the bins.
Unequalized margin across all the bins translates into poor
error performance.rw Integer32 .1.3.6.1.4.1.9.9.130.1.14.1.9 |
cAdslAturDmtConfFastFecSizeThis object specifies the initial number of FEC redundancy
bytes the ATU-R appends to upstream frames transmitted over
the fast channel during the training sequence. The ATU-C can
force the ATU-R to fallback from this value depending on the
aggregate data rate achieved during training.
It is desirable to choose a large FEC size, thereby increasing
the chance of being able to correct errors in the data delivered
by a frame. However, additional FEC redundancy bytes increases
frame overhead, and thus frame latency.rw DmtFecSize UNITS "bytes" .1.3.6.1.4.1.9.9.130.1.14.1.10 |
cAdslAturDmtConfInterleaveFecSizeThis object specifies the initial number of FEC redundancy
bytes the ATU-R appends to upstream frames transmitted over
the interleaved channel during the training sequence. The
ATU-C can force the ATU-R to fallback from this value
depending on the aggregate data rate achieved during training.
It is desirable to choose a large FEC size, thereby increasing
the chance of being able to correct errors in the data delivered
by a frame. However, additional FEC redundancy bytes increases
frame overhead, and thus frame latency.
The value of this object must be a integral multiple of the
value of cAdslAturDmtConfCodewordSize.rw DmtFecSize UNITS "bytes" .1.3.6.1.4.1.9.9.130.1.14.1.11 |
cAdslAturDmtConfCodewordSizeThis object specifies the number of symbols per codeword being
used by the ATU-R for upstream messages on an interleaved
channel during the training sequence. The ATU-C can force the
ATU-R to fallback from this value based on the aggregate data
rate achieved during training.
It is desirable to choose a large codeword size to minimize
overhead. However, increasing the codeword size increases the
possibility of not being able to correct errors in the data
delivered by a frame.rw DmtCodewordSize UNITS "symbols" .1.3.6.1.4.1.9.9.130.1.14.1.12 |
cAdslAtucDmtConfMinrateBlockThis object is used to implement min-rate blocking on DMT
interfaces that support this option.rw TruthValue (SNMPv2-TC) .1.3.6.1.4.1.9.9.130.1.14.1.13 |
cAdslAtucDmtDualBitmapEnabledThis object is used to implement dual bitmap tables for
Annex C compliant DMT interfaces. The bin data for
the DSL interface will appear in cAdslAturDmtBinTable
and cAdslAtucDmtBinTable.rw TruthValue (SNMPv2-TC) .1.3.6.1.4.1.9.9.130.1.14.1.14 |
cAdslDmtLineAlarmConfProfileTableThis table extends the adslLineAlarmConfProfileTable and
contains enterprise-specific ADSL line configuration information
pertaining to alarms. SEQUENCE OF CAdslDmtLineAlarmConfProfileEntry .1.3.6.1.4.1.9.9.130.1.15 |
cAdslDmtLineAlarmConfProfileEntryA configuration profile containing enterprise-specific ADSL
line configuration information pertaining to alarms CAdslDmtLineAlarmConfProfileEntry .1.3.6.1.4.1.9.9.130.1.15.1 |
cAdslAtucDmtThreshRateFallbackThis object specifies a bit rate threshold. When the
following condition is met, the agent generates an
adslAtucRateChangeTrap:
( I + F ) < cAdslAtucDmtThreshRateFallback
where I = adslAtucChanCurrTxRate for ATU-C's interleave channel
F = adslAtucChanCurrTxRate for ATU-C's fast channel
Setting this value to '0' prevents the agent from generating an
adslAtucRateChangeTrap due to rate fallback.rw Integer32 .1.3.6.1.4.1.9.9.130.1.15.1.1 |
cAdslAturDmtThreshRateFallbackThis object specifies a bit rate threshold. When the
following condition is met, the agent generate an
adslAturRateChangeTrap:
( I + F ) < cAdslAturDmtThreshRatefallback
where I = adslAturChanCurrTxRate for ATU-R's interleave channel
F = adslAturChanCurrTxRate for ATU-R's fast channel
Setting this value to '0' prevents the agent from generating an
adslAtucRateChangeTrap due to rate fallback.rw Integer32 .1.3.6.1.4.1.9.9.130.1.15.1.2 |
cAdslDmtBinIfNumberThe cAdslDmtBinIfNumber is used to set the ifIndex for
for which DMT bin information will be collected in
cAdslAtucDmtBinTable and cAdslAturDmtBinTable. The
request will be processed when cAdslDmtIfRqstStatus
is set to pollNow (1). Setting this object will fail if
the value of cAdslDmtIfRqstStatus is currently
rqstInProgress (3). In addition, the interface must
have an ifEntry with an ifType of adsl(94) and an
adslLineCoding of dmt(2).rw InterfaceIndexOrZero (IF-MIB) .1.3.6.1.4.1.9.9.130.1.16 |
cAdslDmtBinIfRqstStatusThis object initiates the polling and stores the status
of the last DMT Bin request. This object can have the
following values :
reset (-1) : write this value to reset the
the finite state machine (FSM)
that controls the reading of
bin information on a DMT
interface.
pollNow (1) : write this value to begin bin
polling on an interface specified
in cAdslDmtBinIfNumber.
noIfConfigured(2) : status read when no valid
interface is set in
cAdslDmtBinIfNumber
ifConfigured(3) : status read when a valid
interface is set in
cAdslDmtBinIfNumber
rqstInProgress(4) : status returned until the
data collection is complete
on an interface.
lcDownForIf (5) : status returned if the line
card is down for the
interface.
ifUntrained (6) : status returned if the interface
on the DSLAM is untrained.
failure (7) : status returned when the request
cannot be completed due to
error.
success (8) : status returned when bin data
collection has been properly
completed.
Data collected on a status of success (8) will be available in
cAdslAtucDmtBinTable and cAdslAturDmtBinTable. A read of this
object can return any value between 2 and 8, while a write can
only be set to the value of 1 or -1.rw Enumeration .1.3.6.1.4.1.9.9.130.1.17 |
cAdslDmtBinIfLstRqstUpldTimecAdslDmtBinIfLstRqstUpldTime stores the time and date
when the last successful upload request was done. This
field is used to determine the age of DMT Bin data
in the cAdslAtucDmtBinTable and cAdslAturDmtBinTable.ro DateAndTime (SNMPv2-TC) .1.3.6.1.4.1.9.9.130.1.18 |
cAdslAtucDmtBinTableThis table contains information on the 256 DMT bins in
the downstream direction. Bins correspond to 4 kHz slots
on a trained DSL line modem. The information stored in
each bin includes bit counts per hertz of bandwidth and
the transmitter gain in 0.01 dB increments. SEQUENCE OF CAdslAtucDmtBinEntry .1.3.6.1.4.1.9.9.130.1.19 |
cAdslAtucDmtBinEntryA set of enterprise-specific parameters for a DMT
DSL interface. After bin data has been collected
successfully there will be at least 1 row entry for
the interface indicated by cAdslAtucDmtBinIfIndex. CAdslAtucDmtBinEntry .1.3.6.1.4.1.9.9.130.1.19.1 |
cAdslAtucDmtBitmapIndexThis index is used to step through all of the bin tables
on a DSL interface. Unsigned32 .1.3.6.1.4.1.9.9.130.1.19.1.1 |
cAdslAtucDmtBinIndexA unique value, greater than zero, for each dmt bin
on the interface specified in cAdslDmtBinIfNumber It is
recommended that values be assigned contiguously
starting from 1. Unsigned32 .1.3.6.1.4.1.9.9.130.1.19.1.2 |
cAdslAtucDmtBinBitAllocThis stores the number of bits allotted per Hertz in this
bin. For example, a value of 15 would indicate that this
slot is tranmitting at a physical rate of 64kbits/sec.ro Unsigned32 .1.3.6.1.4.1.9.9.130.1.19.1.3 |
cAdslAtucDmtBinTxGainThis field has the transmitter gain for this bin and is
stored in 0.01 dB increments.ro Unsigned32 .1.3.6.1.4.1.9.9.130.1.19.1.4 |
cAdslAtucDmtBinNumberThis field indicates the 4.3125 kHz band of downstream
DSL line spectrum occupied by a bin. For example, a value
of 3 would indicate the band from 12.9375 to 17.25 kHz
of the spectrum.ro Unsigned32 .1.3.6.1.4.1.9.9.130.1.19.1.5 |
cAdslAturDmtBinTableThis table contains information for the 32 DMT bins in
the upstream direction. A bin corresponds to a 4 kHz slots
on a trained DSL line modem. The information stored in each
bin includes bit counts per hertz and the transmitter gain
in 0.01 dB increments. SEQUENCE OF CAdslAturDmtBinEntry .1.3.6.1.4.1.9.9.130.1.20 |
cAdslAturDmtBinEntryA set of enterprise-specific parameters for a DMT
DSL interface. After bin data has been collected
successfully there will be at least 1 row entry for
the interface indicated by cAdslAtucDmtBinIfIndex. CAdslAturDmtBinEntry .1.3.6.1.4.1.9.9.130.1.20.1 |
cAdslAturDmtBitmapIndexThis index is used to step through all of the bin tables
on a DSL interface. Unsigned32 .1.3.6.1.4.1.9.9.130.1.20.1.1 |
cAdslAturDmtBinIndexA unique value, greater than zero, for each dmt bin
on the interface specified in cAdslDmtBinIfNumber It is
recommended that values be assigned contiguously
starting from 1. Unsigned32 .1.3.6.1.4.1.9.9.130.1.20.1.2 |
cAdslAturDmtBinBitAllocThis stores the number of bits allotted per Hertz in this
bin. For example, a value of 15 indicates that this
slot is transmitting at a physical rate of 64 Kbits.ro Unsigned32 .1.3.6.1.4.1.9.9.130.1.20.1.3 |
cAdslAturDmtBinTxGainThis field has the transmitter gain for this bin and is
stored in 0.01 dB increments.ro Unsigned32 .1.3.6.1.4.1.9.9.130.1.20.1.4 |
cAdslAturDmtBinNumberThis field indicates the 4.3125 kHz band of upstream
DSL line spectrum occupied by a bin. For example, a value
of 3 would indicate the band from 12.9375 to 17.25 kHz
of the spectrum.ro Unsigned32 .1.3.6.1.4.1.9.9.130.1.20.1.5 |
ciscoAdslDmtLineMIBNotificationsPrefix OBJECT IDENTIFIER .1.3.6.1.4.1.9.9.130.2 |
ciscoAdslDmtLineMIBNotifications OBJECT IDENTIFIER .1.3.6.1.4.1.9.9.130.2.0 |
ciscoAdslDmtLineMIBConformance OBJECT IDENTIFIER .1.3.6.1.4.1.9.9.130.3 |
ciscoAdslDmtLineMIBCompliances OBJECT IDENTIFIER .1.3.6.1.4.1.9.9.130.3.1 |
ciscoAdslDmtLineMIBGroups OBJECT IDENTIFIER .1.3.6.1.4.1.9.9.130.3.2 |