All MIBs › DOCS-IFEXT2-MIB › docsIfExt2CmMscStatusPowerShortfall
docsIfExt2CmMscStatusPowerShortfall
Module: DOCS-IFEXT2-MIB
OID (symbolic): DOCS-IFEXT2-MIB::docsIfExt2CmMscStatusPowerShortfall
OID (numeric): 1.3.6.1.4.1.4491.2.1.5.1.2.1.1.2
Node type: OBJECT-TYPE
Type: TenthdB
Access: read-only
Description: Indicates the Power Shortfall at the CM, in units of tenth dB. The value is provided by the CM and is sent in the RNG-REQ message. It is internally calculated in units of quarter dB and is rounded upward for this MIB object to the nearest tenth dB. A value of zero indicates that the CM has no power shortfall.
What is docsIfExt2CmMscStatusPowerShortfall?
This value, in tenths of a dB, reports the transmit power shortfall a cable modem reported in its Ranging Request when Maximum Scheduled Codes is active. A DOCSIS admin monitors it to detect modems that can't reach the CMTS's requested transmit power, which points to plant attenuation or a marginal upstream path. A nonzero reading of 15 (1.5 dB shortfall) on a modem worth investigating for cabling or amplifier issues, while 0 means no shortfall.
Examples
Walk all instances (SNMPv2c):
snmpwalk -v2c -c public <target> 1.3.6.1.4.1.4491.2.1.5.1.2.1.1.2 snmpwalk -v2c -c public <target> DOCS-IFEXT2-MIB::docsIfExt2CmMscStatusPowerShortfall
Get a specific instance (index 1):
snmpget -v2c -c public <target> 1.3.6.1.4.1.4491.2.1.5.1.2.1.1.2.1 snmpget -v2c -c public <target> DOCS-IFEXT2-MIB::docsIfExt2CmMscStatusPowerShortfall.1
Start monitoring DOCSIS cable modem/CMTS (SCDMA/MSC extension, vendor-neutral CableLabs standard) with a free 30-day trial of IPNetwork Monitor. Create custom SNMP monitor using the DOCS-IFEXT2-MIB::docsIfExt2CmMscStatusPowerShortfall OID value, configure state conditions and alerts, and monitor any DOCSIS cable modem/CMTS (SCDMA/MSC extension, vendor-neutral CableLabs standard) from a single console.
OID Breakdown
Upper-level ancestors (10 from the standard OID tree / other modules)
| Numeric OID | Name | Module |
|---|---|---|
| 1 | iso | LANART-AGENT |
| 1.3 | org | AirPair-MIB |
| 1.3.6 | dod | AirPair-MIB |
| 1.3.6.1 | internet | AirPair-MIB |
| 1.3.6.1.4 | private | AirPair-MIB |
| 1.3.6.1.4.1 | enterprises | AirPair-MIB |
| 1.3.6.1.4.1.4491 | cableLabs | CLAB-DEF-MIB |
| 1.3.6.1.4.1.4491.2 | clabProject | CLAB-DEF-MIB |
| 1.3.6.1.4.1.4491.2.1 | clabProjDocsis | CLAB-DEF-MIB |
| 1.3.6.1.4.1.4491.2.1.5 | docsIfExt2Mib | CLAB-DEF-MIB |
| Numeric OID | Name | Module |
|---|---|---|
| 1.3.6.1.4.1.4491.2.1.5.1 | docsIfExt2MibObjects | DOCS-IFEXT2-MIB |
| 1.3.6.1.4.1.4491.2.1.5.1.2 | docsIfExt2CmObjects | DOCS-IFEXT2-MIB |
| 1.3.6.1.4.1.4491.2.1.5.1.2.1 | docsIfExt2CmMscStatusTable | DOCS-IFEXT2-MIB |
| 1.3.6.1.4.1.4491.2.1.5.1.2.1.1 | docsIfExt2CmMscStatusEntry | DOCS-IFEXT2-MIB |
| 1.3.6.1.4.1.4491.2.1.5.1.2.1.1.2 | docsIfExt2CmMscStatusPowerShortfall | DOCS-IFEXT2-MIB |