ARRIS-C3-MAC-MIB :: dcxMACUpChannelLogC3SnrTimeconstant

MIB Reference — IPNetwork Monitor · Updated September 14, 2026

All MIBsARRIS-C3-MAC-MIBdcxMACUpChannelLogC3SnrTimeconstant

dcxMACUpChannelLogC3SnrTimeconstant

Module: ARRIS-C3-MAC-MIB

OID (symbolic): ARRIS-C3-MAC-MIB::dcxMACUpChannelLogC3SnrTimeconstant

OID (numeric): 1.3.6.1.4.1.4115.1.4.3.6.1.3.1.20

Node type: OBJECT-TYPE

Type: Unsigned32

Access: read-write

Description: The averaging timeconstant used to calculate the per-logical channel MIB variable dcxMACUpChannelSignalNoise. The averaging uses a logarithmic scale, so that the actual timeconstant used is 2^X, where X is the value configured for this object. Increasing the value of X increases the degree to which the SNR results are averaged over time, and reduces the sensitivity of the reported channel SNR to local oscillations in signal quality. Averaging can effectively be disabled by setting this object to 0

What is dcxMACUpChannelLogC3SnrTimeconstant?

Logarithmic SNR averaging timeconstant (0-10); actual 2^X. Controls SNR smoothing in channel statistics. Example: 4 = 16x average.

Examples

Walk all instances (SNMPv2c):

snmpwalk -v2c -c public <target> 1.3.6.1.4.1.4115.1.4.3.6.1.3.1.20
snmpwalk -v2c -c public <target> ARRIS-C3-MAC-MIB::dcxMACUpChannelLogC3SnrTimeconstant

Get a specific instance (index 1):

snmpget -v2c -c public <target> 1.3.6.1.4.1.4115.1.4.3.6.1.3.1.20.1
snmpget -v2c -c public <target> ARRIS-C3-MAC-MIB::dcxMACUpChannelLogC3SnrTimeconstant.1

Set instance 1 (SNMPv2c):

snmpset -v2c -c private <target> 1.3.6.1.4.1.4115.1.4.3.6.1.3.1.20.1 i <value>

Start monitoring ARRIS (Cadant) C3 CMTS (Cable Modem Termination System) (legacy) with a free 30-day trial of IPNetwork Monitor. Create custom SNMP monitor using the ARRIS-C3-MAC-MIB::dcxMACUpChannelLogC3SnrTimeconstant OID value, configure state conditions and alerts, and monitor any ARRIS (Cadant) C3 CMTS (Cable Modem Termination System) (legacy) 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
1.3.6.1.4.1.4115arrisARRIS-MIB
1.3.6.1.4.1.4115.1arrisProductsARRIS-MIB
1.3.6.1.4.1.4115.1.4arrisProdIdCMTSARRIS-MIB
1.3.6.1.4.1.4115.1.4.3cmtsC3ARRIS-MIB
Numeric OIDNameModule
1.3.6.1.4.1.4115.1.4.3.6cmtsC3MACMIBARRIS-C3-MAC-MIB
1.3.6.1.4.1.4115.1.4.3.6.1dcxMACObjectsARRIS-C3-MAC-MIB
1.3.6.1.4.1.4115.1.4.3.6.1.3dcxMACUpstreamChannelTableARRIS-C3-MAC-MIB
1.3.6.1.4.1.4115.1.4.3.6.1.3.1dcxMACUpstreamChannelEntryARRIS-C3-MAC-MIB
1.3.6.1.4.1.4115.1.4.3.6.1.3.1.20dcxMACUpChannelLogC3SnrTimeconstantARRIS-C3-MAC-MIB