All MIBs › DOCS-DRF-MIB › docsDrfDownstreamCapabModulation
docsDrfDownstreamCapabModulation
Module: DOCS-DRF-MIB
OID (symbolic): DOCS-DRF-MIB::docsDrfDownstreamCapabModulation
OID (numeric): 1.3.6.1.4.1.4491.2.1.23.1.3.1.4
Node type: OBJECT-TYPE
Type: Bits
Access: read-only
Description: The QAM channel Modulation capabilities. 'qamDependency' BIT set to '1' indicates the QAM channel modulation value has dependencies with other QAM channels as indicated in docsDrfGroupDependencyTable.
'qam64' set to '1' indicates 64 QAM modulation support. 'qam256' set to '1' indicates 256 QAM modulation support.
When 'qamDependency' BIT is set to '1', a set to the modulation PHY parameter of a QAM channels in a dependency group (with docsDrfGroupDependencyType set to docsDrfPhyParamSameValue), sets the same modulation type to all QAM channels in the dependency group.
What is docsDrfDownstreamCapabModulation?
This BITS value reports the QAM channel's modulation capabilities: whether modulation has cross-channel dependencies (qamDependency) and whether 64-QAM (qam64) or 256-QAM (qam256) is supported. An admin selecting a modulation scheme for higher downstream throughput checks the qamDependency bit, since setting modulation on this channel in a same-value dependency group also changes it on the other channels in that group. A channel advertising qam256 support lets an operator switch to 256-QAM for higher throughput, but if qamDependency is set that switch propagates to all channels in its dependency group.
Examples
Walk all instances (SNMPv2c):
snmpwalk -v2c -c public <target> 1.3.6.1.4.1.4491.2.1.23.1.3.1.4 snmpwalk -v2c -c public <target> DOCS-DRF-MIB::docsDrfDownstreamCapabModulation
Get a specific instance (index 1):
snmpget -v2c -c public <target> 1.3.6.1.4.1.4491.2.1.23.1.3.1.4.1 snmpget -v2c -c public <target> DOCS-DRF-MIB::docsDrfDownstreamCapabModulation.1
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OID Breakdown
Upper-level ancestors (9 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 |
| Numeric OID | Name | Module |
|---|---|---|
| 1.3.6.1.4.1.4491.2.1.23 | docsDrfMib | DOCS-DRF-MIB |
| 1.3.6.1.4.1.4491.2.1.23.1 | docsDrfObjects | DOCS-DRF-MIB |
| 1.3.6.1.4.1.4491.2.1.23.1.3 | docsDrfDownstreamCapabilitiesTable | DOCS-DRF-MIB |
| 1.3.6.1.4.1.4491.2.1.23.1.3.1 | docsDrfDownstreamCapabilitiesEntry | DOCS-DRF-MIB |
| 1.3.6.1.4.1.4491.2.1.23.1.3.1.4 | docsDrfDownstreamCapabModulation | DOCS-DRF-MIB |