All MIBs › DOCS-IF31-MIB › docsIf31CmUsOfdmaChanSubcarrierSpacing
docsIf31CmUsOfdmaChanSubcarrierSpacing
Module: DOCS-IF31-MIB
OID (symbolic): DOCS-IF31-MIB::docsIf31CmUsOfdmaChanSubcarrierSpacing
OID (numeric): 1.3.6.1.4.1.4491.2.1.28.1.13.1.6
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 OFDMA upstream channel. If it is 2K mode, then the subcarrier spacing is 50kHz. If it is 4K mode, then the subcarrier spacing is 25kHz.
What is docsIf31CmUsOfdmaChanSubcarrierSpacing?
Reports, in kHz, the spacing between adjacent subcarriers on this OFDMA upstream channel, tied to the configured FFT mode: 50 kHz spacing for 2K mode, or 25 kHz spacing for 4K mode. Admins can use this to confirm which FFT mode the upstream channel is actually running, since the choice trades off spectral granularity against symbol overhead.
Examples
Walk all instances (SNMPv2c):
snmpwalk -v2c -c public <target> 1.3.6.1.4.1.4491.2.1.28.1.13.1.6 snmpwalk -v2c -c public <target> DOCS-IF31-MIB::docsIf31CmUsOfdmaChanSubcarrierSpacing
Get a specific instance (index 1):
snmpget -v2c -c public <target> 1.3.6.1.4.1.4491.2.1.28.1.13.1.6.1 snmpget -v2c -c public <target> DOCS-IF31-MIB::docsIf31CmUsOfdmaChanSubcarrierSpacing.1
SNMPv3 example:
snmpget -v3 -l authPriv -u snmpv3-user -a SHA -A "AuthPassword1" -x AES -X "PrivPassword1" <target> docsIf31CmUsOfdmaChanSubcarrierSpacing.1
Start monitoring DOCSIS 3.1 cable modem/CMTS-CCAP (OFDM/OFDMA channels, vendor-neutral CableLabs standard) with a free 30-day trial of IPNetwork Monitor. Create custom SNMP monitor using the DOCS-IF31-MIB::docsIf31CmUsOfdmaChanSubcarrierSpacing OID value, configure state conditions and alerts, and monitor any DOCSIS 3.1 cable modem/CMTS-CCAP (OFDM/OFDMA channels, vendor-neutral CableLabs standard) from a single console.
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 |
| 1.3.6.1.4.1.4491.2.1.28.1.13 | docsIf31CmUsOfdmaChanTable | DOCS-IF31-MIB |
| 1.3.6.1.4.1.4491.2.1.28.1.13.1 | docsIf31CmUsOfdmaChanEntry | DOCS-IF31-MIB |
| 1.3.6.1.4.1.4491.2.1.28.1.13.1.6 | docsIf31CmUsOfdmaChanSubcarrierSpacing | DOCS-IF31-MIB |