DOCS-IF31-MIB :: docsIf31CmtsCmRegStatusTcsDrwTop

MIB Reference — IPNetwork Monitor · Updated October 05, 2026

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docsIf31CmtsCmRegStatusTcsDrwTop

Module: DOCS-IF31-MIB

OID (symbolic): DOCS-IF31-MIB::docsIf31CmtsCmRegStatusTcsDrwTop

OID (numeric): 1.3.6.1.4.1.4491.2.1.28.1.3.1.5

Node type: OBJECT-TYPE

Type: Unsigned32

Access: read-only

Description: This attribute reports the level of the top of the Dynamic Range Window. The value is expressed in dBmV and is the result of a calculation equal to P1.6hi - P1.6load_min_set. 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 docsIf31CmtsCmRegStatusTcsDrwTop?

Reports, in dBmV, the top of the modem's upstream Dynamic Range Window, calculated as P1.6hi minus the minimum load-set power (P1.6load_min_set). This gives an admin the practical upper bound of transmit power the modem is allowed to use on its Transmit Channel Set; it is DOCSIS 3.1-specific and reads zero for pre-3.1 modems.

Examples

Walk all instances (SNMPv2c):

snmpwalk -v2c -c public <target> 1.3.6.1.4.1.4491.2.1.28.1.3.1.5
snmpwalk -v2c -c public <target> DOCS-IF31-MIB::docsIf31CmtsCmRegStatusTcsDrwTop

Get a specific instance (index 1):

snmpget -v2c -c public <target> 1.3.6.1.4.1.4491.2.1.28.1.3.1.5.1
snmpget -v2c -c public <target> DOCS-IF31-MIB::docsIf31CmtsCmRegStatusTcsDrwTop.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::docsIf31CmtsCmRegStatusTcsDrwTop 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
1.3.6.1.4.1.4491.2.1.28.1.3.1.5docsIf31CmtsCmRegStatusTcsDrwTopDOCS-IF31-MIB