DOCS-IF31-MIB :: docsIf31CmtsCmRegStatusMaxUsableUsFreq

MIB Reference — IPNetwork Monitor · Updated October 05, 2026

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docsIf31CmtsCmRegStatusMaxUsableUsFreq

Module: DOCS-IF31-MIB

OID (symbolic): DOCS-IF31-MIB::docsIf31CmtsCmRegStatusMaxUsableUsFreq

OID (numeric): 1.3.6.1.4.1.4491.2.1.28.1.3.1.8

Node type: OBJECT-TYPE

Type: Unsigned32

Access: read-only

Description: This attribute is the lower of the CCAP's maximum supported upstream frequency and the CM's maximum supported upstream frequency. It indicates the highest upstream frequency the CCAP can use to receive signals from this CM taking into account the capabilities of both devices.

Note: there is no minimum usable upstream frequency attribute as this is 5MHz for both CCAP and CM devices.

This object is applicable to DOCSIS 3.1 modems but not to prior versions of DOCSIS modems. If the CM is a pre-DOCSIS 3.1 modem, the CMTS returns zero.

What is docsIf31CmtsCmRegStatusMaxUsableUsFreq?

Reports, in Hz, the highest upstream frequency the CMTS can use to receive signals from this modem, computed as the lower of the CMTS's and modem's maximum supported upstream frequencies; there is no corresponding minimum object because the minimum usable upstream frequency is fixed at 5 MHz for all DOCSIS 3.1 devices. An admin can use this to see whether a modem's upstream range is being capped by the CMTS or by the modem itself; applies only to DOCSIS 3.1 modems.

Examples

Walk all instances (SNMPv2c):

snmpwalk -v2c -c public <target> 1.3.6.1.4.1.4491.2.1.28.1.3.1.8
snmpwalk -v2c -c public <target> DOCS-IF31-MIB::docsIf31CmtsCmRegStatusMaxUsableUsFreq

Get a specific instance (index 1):

snmpget -v2c -c public <target> 1.3.6.1.4.1.4491.2.1.28.1.3.1.8.1
snmpget -v2c -c public <target> DOCS-IF31-MIB::docsIf31CmtsCmRegStatusMaxUsableUsFreq.1

Start monitoring DOCSIS 3.1 cable modem/CMTS-CCAP (OFDM/OFDMA channels, vendor-neutral CableLabs standard) with a free 30-day trial of IPNetwork Monitor. Create custom SNMP monitor using the DOCS-IF31-MIB::docsIf31CmtsCmRegStatusMaxUsableUsFreq OID value, configure state conditions and alerts, and monitor any DOCSIS 3.1 cable modem/CMTS-CCAP (OFDM/OFDMA channels, vendor-neutral CableLabs standard) from a single console.

OID Breakdown

Upper-level ancestors (9 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
1.3.6.1.4.1.4491cableLabsCLAB-DEF-MIB
1.3.6.1.4.1.4491.2clabProjectCLAB-DEF-MIB
1.3.6.1.4.1.4491.2.1clabProjDocsisCLAB-DEF-MIB
Numeric OIDNameModule
1.3.6.1.4.1.4491.2.1.28docsIf31MibDOCS-IF31-MIB
1.3.6.1.4.1.4491.2.1.28.1docsIf31MibObjectsDOCS-IF31-MIB
1.3.6.1.4.1.4491.2.1.28.1.3docsIf31CmtsCmRegStatusTableDOCS-IF31-MIB
1.3.6.1.4.1.4491.2.1.28.1.3.1docsIf31CmtsCmRegStatusEntryDOCS-IF31-MIB
1.3.6.1.4.1.4491.2.1.28.1.3.1.8docsIf31CmtsCmRegStatusMaxUsableUsFreqDOCS-IF31-MIB