docsIf31CmDsOfdmChanChanIndicator

DOCS-IF31-MIB · .1.3.6.1.4.1.4491.2.1.28.1.9.1.2

MIB view Table view

Object

column PrimaryDsIndicatorType

This attribute is used to identify the OFDM downstream channel
as primary, backup primary or non-primary. A value of
'primary(2)' indicates that OFDM channel is assigned to be the
CM's primary downstream channel. A value of 'backupPrimary(3)'
indicates that the OFDM channel is assigned to be the CM's
backup primary downstream channel. A value of 'nonPrimary(4)'
indicates the OFDM channel is not assigned to be CM's primary
or backup primary downstream channel.

Context

MIB: DOCS-IF31-MIB
OID: .1.3.6.1.4.1.4491.2.1.28.1.9.1.2
Type: column
Access: readonly
Status: current
Parent: docsIf31CmDsOfdmChanEntry
Table: docsIf31CmDsOfdmChanTable
Siblings: 15

Syntax

PrimaryDsIndicatorType

Source: PrimaryDsIndicatorType
Base type: Enumeration

Values & Constraints

Type Values

`1`	other
`2`	primary
`3`	backupPrimary
`4`	nonPrimary

Related Objects

Sibling Objects

Object	Type	Syntax	OID
docsIf31CmDsOfdmChanChannelId The Cable Modem Termination System identification of the OFDM downstream channel within this particular MAC interface. if the interface is down, the object returns the most curren…	column	Integer32	`.1.3.6.1.4.1.4491.2.1.28.1.9.1.1`
docsIf31CmDsOfdmChanPlcFreq This is the PHY Link Channel (PLC) frequency. It is the center frequency of the lowest frequency subcarrier of the PLC. The aim of the PLC is for the CMTS to convey to the CM the …	column	Hz SNMPv2-SMIUnsigned32	`.1.3.6.1.4.1.4491.2.1.28.1.9.1.10`
docsIf31CmDsOfdmChanNumPilots This attribute indicates the number of continuous pilots configured for the OFDM downstream channel as received in the OCD message.	column	SNMPv2-SMIUnsigned32	`.1.3.6.1.4.1.4491.2.1.28.1.9.1.11`
docsIf31CmDsOfdmChanTimeInterleaverDepth The time interleaving used for this downstream channel as received in the OCD message.	column	symbols TimeInterleaverDepth	`.1.3.6.1.4.1.4491.2.1.28.1.9.1.12`
docsIf31CmDsOfdmChanPlcTotalCodewords This attribute represents the total number of PLC codewords received by the CM.	column	SNMPv2-SMICounter64	`.1.3.6.1.4.1.4491.2.1.28.1.9.1.13`
docsIf31CmDsOfdmChanPlcUnreliableCodewords This attribute represents the total number of PLC codewords which failed post-decoding LDPC syndrome check.	column	SNMPv2-SMICounter64	`.1.3.6.1.4.1.4491.2.1.28.1.9.1.14`
docsIf31CmDsOfdmChanNcpTotalFields This attribute represents the total number of NCP fields received by the CM.	column	SNMPv2-SMICounter64	`.1.3.6.1.4.1.4491.2.1.28.1.9.1.15`
docsIf31CmDsOfdmChanNcpFieldCrcFailures This attribute represents the total number of NCP fields received by the CM which failed the CRC check.	column	SNMPv2-SMICounter64	`.1.3.6.1.4.1.4491.2.1.28.1.9.1.16`
docsIf31CmDsOfdmChanSubcarrierZeroFreq This attribute specifies the center frequency of the subcarrier 0 of the OFDM transmission. Note that since subcarrier 0 is always excluded, it will actually be below the allowed …	column	Hz SNMPv2-SMIUnsigned32	`.1.3.6.1.4.1.4491.2.1.28.1.9.1.3`
docsIf31CmDsOfdmChanFirstActiveSubcarrierNum This attribute corresponds to the number of the first non-excluded subcarrier. The valid range is 148 to 7895	column	SNMPv2-SMIUnsigned32	`.1.3.6.1.4.1.4491.2.1.28.1.9.1.4`
docsIf31CmDsOfdmChanLastActiveSubcarrierNum This attribute corresponds to the number of the last non-excluded subcarrier. The valid range is 148 to 7895	column	SNMPv2-SMIUnsigned32	`.1.3.6.1.4.1.4491.2.1.28.1.9.1.5`
docsIf31CmDsOfdmChanNumActiveSubcarriers This attribute represents the number of active data subcarriers within the OFDM downstream channel (i.e. this exclude subcarriers for continuous pilots and the PLC). For 4K FFT mo…	column	SNMPv2-SMIUnsigned32	`.1.3.6.1.4.1.4491.2.1.28.1.9.1.6`
docsIf31CmDsOfdmChanSubcarrierSpacing This attribute defines the subcarrier spacing associated with a particular FFT mode configured on the OFDM downstream channel. If it is 4K mode, then the subcarrier spacing is 50k…	column	kHz SubcarrierSpacingType	`.1.3.6.1.4.1.4491.2.1.28.1.9.1.7`
docsIf31CmDsOfdmChanCyclicPrefix Cyclic prefix enables the receiver to overcome the effects of inter-symbol-interference and intercarrier-interference caused by micro-reflections in the channel. There are five po…	column	number of samples DsOfdmCyclicPrefix	`.1.3.6.1.4.1.4491.2.1.28.1.9.1.8`
docsIf31CmDsOfdmChanRollOffPeriod Roll off period maximizes channel capacity by sharpening the edges of the spectrum of the OFDM signal. For windowing purposes another segment at the start of the IDFT output is ap…	column	number of samples DsOfdmRollOffPeriod	`.1.3.6.1.4.1.4491.2.1.28.1.9.1.9`