All MIBs › DOCS-IFEXT2-MIB › docsIfExt2CmMscStatusPowerHeadroom
docsIfExt2CmMscStatusPowerHeadroom
Module: DOCS-IFEXT2-MIB
OID (symbolic): DOCS-IFEXT2-MIB::docsIfExt2CmMscStatusPowerHeadroom
OID (numeric): 1.3.6.1.4.1.4491.2.1.5.1.2.1.1.5
Node type: OBJECT-TYPE
Type: TenthdB
Access: read-only
Description: Indicates the Maximum Scheduled Codes Power Headroom in use by the CM, in units of tenth dB. The value is provided by the CMTS in units of quarter dB through TLV-11 in the RNG-RSP message and is rounded upward for this MIB object to the nearest tenth dB. A value of zero indicates the CMTS provided no Power Headroom. This object should remain at zero when docsIfExt2CmMscStatusState is not active(3).
What is docsIfExt2CmMscStatusPowerHeadroom?
This value, in tenths of a dB, reports the Maximum Scheduled Codes power headroom the CMTS granted a cable modem via the Ranging Response, and stays at zero when MSC is not active. An admin uses it alongside the power shortfall figure to gauge how much transmit-power margin a modem has been given for MSC operation. A value of 20 (2.0 dB headroom) indicates the CMTS gave that modem extra power margin for MSC use.
Examples
Walk all instances (SNMPv2c):
snmpwalk -v2c -c public <target> 1.3.6.1.4.1.4491.2.1.5.1.2.1.1.5 snmpwalk -v2c -c public <target> DOCS-IFEXT2-MIB::docsIfExt2CmMscStatusPowerHeadroom
Get a specific instance (index 1):
snmpget -v2c -c public <target> 1.3.6.1.4.1.4491.2.1.5.1.2.1.1.5.1 snmpget -v2c -c public <target> DOCS-IFEXT2-MIB::docsIfExt2CmMscStatusPowerHeadroom.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::docsIfExt2CmMscStatusPowerHeadroom 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 |
| 1.3.6.1.4.1.4491.2.1.5.1.2.1.1.5 | docsIfExt2CmMscStatusPowerHeadroom | DOCS-IFEXT2-MIB |