CADANT-CMTS-DOWNCHANNEL-MIB :: cadIfDownChannelModulation

MIB Reference — IPNetwork Monitor · Updated September 14, 2026

All MIBsCADANT-CMTS-DOWNCHANNEL-MIBcadIfDownChannelModulation

cadIfDownChannelModulation

Module: CADANT-CMTS-DOWNCHANNEL-MIB

OID (symbolic): CADANT-CMTS-DOWNCHANNEL-MIB::cadIfDownChannelModulation

OID (numeric): 1.3.6.1.4.1.4998.1.1.15.2.1.1.4

Node type: OBJECT-TYPE

Type: INTEGER

Access: read-write

Description: The modulation type associated with this downstream channel. If the interface is down, this object either returns the configured value (CMTS), the most current value (CM), or the value of unknown(1). See the associated conformance object for write conditions and limitations. See the reference for specifics on the modulation profiles implied by qam64 and qam256.

What is cadIfDownChannelModulation?

Reports or configures the modulation scheme (such as QAM64 or QAM256) used on a downstream channel. Higher-order modulation carries more data per symbol but requires a better signal-to-noise ratio.

Examples

Walk all instances (SNMPv2c):

snmpwalk -v2c -c public <target> 1.3.6.1.4.1.4998.1.1.15.2.1.1.4
snmpwalk -v2c -c public <target> CADANT-CMTS-DOWNCHANNEL-MIB::cadIfDownChannelModulation

Get a specific instance (index 1):

snmpget -v2c -c public <target> 1.3.6.1.4.1.4998.1.1.15.2.1.1.4.1
snmpget -v2c -c public <target> CADANT-CMTS-DOWNCHANNEL-MIB::cadIfDownChannelModulation.1

Set instance 1 (SNMPv2c):

snmpset -v2c -c private <target> 1.3.6.1.4.1.4998.1.1.15.2.1.1.4.1 i <value>

Start monitoring ARRIS/Cadant C4/E6000 CMTS (cable modem termination system) with a free 30-day trial of IPNetwork Monitor. Create custom SNMP monitor using the CADANT-CMTS-DOWNCHANNEL-MIB::cadIfDownChannelModulation OID value, configure state conditions and alerts, and monitor any ARRIS/Cadant C4/E6000 CMTS (cable modem termination system) from a single console.

OID Breakdown

Upper-level ancestors (10 from the standard OID tree / other modules)
Numeric OIDNameModule
1isoLANART-AGENT
1.3orgAirPair-MIB
1.3.6dodAirPair-MIB
1.3.6.1internetAirPair-MIB
1.3.6.1.4privateAirPair-MIB
1.3.6.1.4.1enterprisesAirPair-MIB
1.3.6.1.4.1.4998cadantCADANT-PRODUCTS-MIB
1.3.6.1.4.1.4998.1cadObjectsCADANT-PRODUCTS-MIB
1.3.6.1.4.1.4998.1.1cadCableCADANT-PRODUCTS-MIB
1.3.6.1.4.1.4998.1.1.15cadSpectrumCADANT-PRODUCTS-MIB
Numeric OIDNameModule
1.3.6.1.4.1.4998.1.1.15.2cadDownchannelMibCADANT-CMTS-DOWNCHANNEL-MIB
1.3.6.1.4.1.4998.1.1.15.2.1cadIfDownstreamChannelTableCADANT-CMTS-DOWNCHANNEL-MIB
1.3.6.1.4.1.4998.1.1.15.2.1.1cadIfDownstreamChannelEntryCADANT-CMTS-DOWNCHANNEL-MIB
1.3.6.1.4.1.4998.1.1.15.2.1.1.4cadIfDownChannelModulationCADANT-CMTS-DOWNCHANNEL-MIB