All MIBs › DOCS-IF-M-CMTS-MIB › docsIfMCmtsEqamDownstreamCapabFrequency
docsIfMCmtsEqamDownstreamCapabFrequency
Module: DOCS-IF-M-CMTS-MIB
OID (symbolic): DOCS-IF-M-CMTS-MIB::docsIfMCmtsEqamDownstreamCapabFrequency
OID (numeric): 1.3.6.1.4.1.4491.2.1.6.1.3.2.1.1
Node type: OBJECT-TYPE
Type: Bits
Access: read-only
Description: The QAM channel frequency capabilities. 'eqamDependency' BIT set to '1' indicates the QAM channel frequency value has dependencies with other QAM channels and an entry that includes this QAM channel is in in docsIfMCmtsEqamGroupDependencyTable for the PHY parameter 'frequency'.
'adjacentChannel' BIT set to '1' indicates the QAM channel frequencies in the dependency group (DEPI TSID group) are adjacent and constrained in a frequency range based on the number of QAM channels in the dependency group.
'adjacentChannelOrder' BIT set to '1' indicates the QAM channel frequency adjacency is based in the QAM channel sequence like entPhysicalParentRelPos in EntPhysicalTable or other vendor sequence.
e.g., a dependency group of four QAM channels with 'adjacentChannelOrder' BIT set to '1': The 4th QAM channel in the sequence gets a frequency assignment f + 1*bandwidth when the frequency value of the 3rd QAM channel in the sequence is set to f. Similarly the 1st QAM channel in the sequence gets a frequency assignment of f - 2*bandwidth and the 2nd QAM channels gets a frequency of f -1*bandwidth.
'adjacentChannel' 'adjacentChannelOrder' BITs may be set to '1' when a dependency group includes the QAM channel of this M-CMTS Downstream interface and the value of the object docsIfMCmtsEqamGroupDependencyType is docsPHYParamAdjacentValues.
'adjacentChannel' BIT may be set to '1' if 'eqamDependency' BIT is set to '1'. The same way, 'adjacentChannelOrder' BIT may be set to '1' and implies 'adjacentChannel' BIT is set to '1'.
What is docsIfMCmtsEqamDownstreamCapabFrequency?
A capability bitmap describing frequency constraints for this QAM channel: 'eqamDependency' flags that frequency is tied to other channels in a group, 'adjacentChannel' flags that group members must sit in an adjacent frequency range, and 'adjacentChannelOrder' flags that the adjacency follows physical channel ordering (e.g. entPhysicalParentRelPos). An RF engineer consults this before retuning a channel to know whether moving its frequency will force compensating shifts on neighboring QAM channels in the same dependency group.
Examples
Walk all instances (SNMPv2c):
snmpwalk -v2c -c public <target> 1.3.6.1.4.1.4491.2.1.6.1.3.2.1.1 snmpwalk -v2c -c public <target> DOCS-IF-M-CMTS-MIB::docsIfMCmtsEqamDownstreamCapabFrequency
Get a specific instance (index 1):
snmpget -v2c -c public <target> 1.3.6.1.4.1.4491.2.1.6.1.3.2.1.1.1 snmpget -v2c -c public <target> DOCS-IF-M-CMTS-MIB::docsIfMCmtsEqamDownstreamCapabFrequency.1
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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 |
| 1.3.6.1.4.1.4491.2.1.6 | docsIfMCmtsMib | CLAB-DEF-MIB |
| Numeric OID | Name | Module |
|---|---|---|
| 1.3.6.1.4.1.4491.2.1.6.1 | docsIfMCmtsObjects | DOCS-IF-M-CMTS-MIB |
| 1.3.6.1.4.1.4491.2.1.6.1.3 | docsIfMCmtsEqamObjects | DOCS-IF-M-CMTS-MIB |
| 1.3.6.1.4.1.4491.2.1.6.1.3.2 | docsIfMCmtsEqamDownstreamCapabilitiesTable | DOCS-IF-M-CMTS-MIB |
| 1.3.6.1.4.1.4491.2.1.6.1.3.2.1 | docsIfMCmtsEqamDownstreamCapabilitiesEntry | DOCS-IF-M-CMTS-MIB |
| 1.3.6.1.4.1.4491.2.1.6.1.3.2.1.1 | docsIfMCmtsEqamDownstreamCapabFrequency | DOCS-IF-M-CMTS-MIB |