All MIBs › DOCS-IF3-MIB › docsIf3CmSpectrumAnalysisCtrlCmdSegmentFrequencySpan
docsIf3CmSpectrumAnalysisCtrlCmdSegmentFrequencySpan
Module: DOCS-IF3-MIB
OID (symbolic): DOCS-IF3-MIB::docsIf3CmSpectrumAnalysisCtrlCmdSegmentFrequencySpan
OID (numeric): 1.3.6.1.4.1.4491.2.1.20.1.34.5
Node type: OBJECT-TYPE
Type: Unsigned32
Access: read-write
Description:
This attribute controls the frequency span of each segment (instance) in the docsIf3CmSpectrumAnalysisMeasTable.
If set to a value of 0, then a default span will be chosen based on the hardware capabilities of the device. Segments are contiguous from the FirstSegementCenterFrequency to the LastSegmentCenterFrequency and the center frequency for each successive segment is incremented by the SegmentFequencySpan. The number of segments is (LastSegmentCenterFrequency - FirstSegmentCenterFrequency)/SegmentFrequencySpan + 1. A segment is equivalent to an instance in the docsIf3CmSpectrumAnalysisMeasTable. The chosen SegmentFrequencySpan affects the number of entries in the docsIf3CmSpectrumAnalysisMeasTable. A more granular SegmentFrequencySpan may adversely affect the amount of time needed to query the table entries in addition to possibly increasing the acquisition time.
Changing the value of this attribute may result in changes to the docsIf3CmSpectrumAnalysisMeasTable.
Note that if this attribute is set to an invalid value, the device may return an error, or may adjust the value of the object to the closest valid value.
What is docsIf3CmSpectrumAnalysisCtrlCmdSegmentFrequencySpan?
This parameter specifies the frequency span (in Hz) of each segment in spectrum analysis measurements for cable modem downlink/uplink channels. The segments partition the total frequency range contiguously, and the span determines both the frequency resolution and the number of segments required. Operators adjust this to balance spectral resolution against measurement time and system load—wider spans are faster but provide coarser frequency detail.
Examples
Walk all instances (SNMPv2c):
snmpwalk -v2c -c public <target> 1.3.6.1.4.1.4491.2.1.20.1.34.5 snmpwalk -v2c -c public <target> DOCS-IF3-MIB::docsIf3CmSpectrumAnalysisCtrlCmdSegmentFrequencySpan
Get a specific instance (index 1):
snmpget -v2c -c public <target> 1.3.6.1.4.1.4491.2.1.20.1.34.5.1 snmpget -v2c -c public <target> DOCS-IF3-MIB::docsIf3CmSpectrumAnalysisCtrlCmdSegmentFrequencySpan.1
Set instance 1 (SNMPv2c):
snmpset -v2c -c private <target> 1.3.6.1.4.1.4491.2.1.20.1.34.5.1 i <value>
OID Breakdown
| Numeric OID | Name | Module |
|---|---|---|
| 1 | iso | LANART-AGENT |
| 1.3 | org | BIANCA-BRICK-PPP-MIB |
| 1.3.6 | dod | BIANCA-BRICK-PPP-MIB |
| 1.3.6.1 | internet | BIANCA-BRICK-PPP-MIB |
| 1.3.6.1.4 | private | BIANCA-BRICK-PPP-MIB |
| 1.3.6.1.4.1 | enterprises | ANIROOT-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 |
| 1.3.6.1.4.1.4491.2.1.20 | docsIf3Mib | CLAB-DEF-MIB |
| 1.3.6.1.4.1.4491.2.1.20.1 | docsIf3MibObjects | DOCS-IF3-MIB |
| 1.3.6.1.4.1.4491.2.1.20.1.34 | docsIf3CmSpectrumAnalysisCtrlCmd | DOCS-IF3-MIB |
| 1.3.6.1.4.1.4491.2.1.20.1.34.5 | docsIf3CmSpectrumAnalysisCtrlCmdSegmentFrequencySpan | DOCS-IF3-MIB |