All MIBs › DOCS-IF31-MIB › docsIf31CmtsCmUsOfdmaChannelMicroreflections
docsIf31CmtsCmUsOfdmaChannelMicroreflections
Module: DOCS-IF31-MIB
OID (symbolic): DOCS-IF31-MIB::docsIf31CmtsCmUsOfdmaChannelMicroreflections
OID (numeric): 1.3.6.1.4.1.4491.2.1.28.1.4.1.7
Node type: OBJECT-TYPE
Type: Unsigned32
Access: read-only
Description: This attribute represents microreflections received on this upstream channel in dBc.
What is docsIf31CmtsCmUsOfdmaChannelMicroreflections?
Reports, in dBc, the level of microreflections (echoes caused by impedance mismatches in the cable plant) detected on this modem's upstream OFDMA channel. High microreflection values are a classic indicator of loose connectors, damaged cable, or bad splitters in the plant between the modem and the CMTS, so this is a standard field to check when diagnosing intermittent upstream errors.
Examples
Walk all instances (SNMPv2c):
snmpwalk -v2c -c public <target> 1.3.6.1.4.1.4491.2.1.28.1.4.1.7 snmpwalk -v2c -c public <target> DOCS-IF31-MIB::docsIf31CmtsCmUsOfdmaChannelMicroreflections
Get a specific instance (index 1):
snmpget -v2c -c public <target> 1.3.6.1.4.1.4491.2.1.28.1.4.1.7.1 snmpget -v2c -c public <target> DOCS-IF31-MIB::docsIf31CmtsCmUsOfdmaChannelMicroreflections.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::docsIf31CmtsCmUsOfdmaChannelMicroreflections 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 |
| 1.3.6.1.4.1.4491.2.1.28.1.4 | docsIf31CmtsCmUsOfdmaChannelStatusTable | DOCS-IF31-MIB |
| 1.3.6.1.4.1.4491.2.1.28.1.4.1 | docsIf31CmtsCmUsOfdmaChannelStatusEntry | DOCS-IF31-MIB |
| 1.3.6.1.4.1.4491.2.1.28.1.4.1.7 | docsIf31CmtsCmUsOfdmaChannelMicroreflections | DOCS-IF31-MIB |