All MIBs › DOCS-IF31-MIB › docsIf31CmDsOfdmChanSubcarrierSpacing
docsIf31CmDsOfdmChanSubcarrierSpacing
Module: DOCS-IF31-MIB
OID (symbolic): DOCS-IF31-MIB::docsIf31CmDsOfdmChanSubcarrierSpacing
OID (numeric): 1.3.6.1.4.1.4491.2.1.28.1.9.1.7
Node type: OBJECT-TYPE
Type: SubcarrierSpacingType
Access: read-only
Description: This attribute defines the subcarrier spacing associated with a particular FFT mode configured on the OFDM downstream channel. If it is 4K mode, then the subcarrier spacing is 50kHz. If it is 8K mode, then the subcarrier spacing is 25kHz.
What is docsIf31CmDsOfdmChanSubcarrierSpacing?
Reports, in kHz, the spacing between adjacent OFDM subcarriers on this downstream channel, which is tied directly to the configured FFT mode: 50 kHz spacing for 4K FFT mode, or 25 kHz spacing for 8K FFT mode. Admins can use this to confirm which FFT mode a channel is actually running, since 8K mode offers finer spectral granularity at the cost of more subcarriers to manage.
Examples
Walk all instances (SNMPv2c):
snmpwalk -v2c -c public <target> 1.3.6.1.4.1.4491.2.1.28.1.9.1.7 snmpwalk -v2c -c public <target> DOCS-IF31-MIB::docsIf31CmDsOfdmChanSubcarrierSpacing
Get a specific instance (index 1):
snmpget -v2c -c public <target> 1.3.6.1.4.1.4491.2.1.28.1.9.1.7.1 snmpget -v2c -c public <target> DOCS-IF31-MIB::docsIf31CmDsOfdmChanSubcarrierSpacing.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 |
|---|---|---|
| 1.3.6.1.4.1.4491.2.1.28 | docsIf31Mib | DOCS-IF31-MIB |
| 1.3.6.1.4.1.4491.2.1.28.1 | docsIf31MibObjects | DOCS-IF31-MIB |
| 1.3.6.1.4.1.4491.2.1.28.1.9 | docsIf31CmDsOfdmChanTable | DOCS-IF31-MIB |
| 1.3.6.1.4.1.4491.2.1.28.1.9.1 | docsIf31CmDsOfdmChanEntry | DOCS-IF31-MIB |
| 1.3.6.1.4.1.4491.2.1.28.1.9.1.7 | docsIf31CmDsOfdmChanSubcarrierSpacing | DOCS-IF31-MIB |