All MIBs › DOCS-QOS3-MIB › docsQosCmDsidStatsSeqNumMissing
docsQosCmDsidStatsSeqNumMissing
Module: DOCS-QOS3-MIB
OID (symbolic): DOCS-QOS3-MIB::docsQosCmDsidStatsSeqNumMissing
OID (numeric): 1.3.6.1.4.1.4491.2.1.21.1.22.1.2
Node type: OBJECT-TYPE
Type: Counter32
Access: read-only
Description: This attribute counts the number of times the Next Expected Packet Sequence Number is declared lost. In this case one or more data packets are lost. This is generally caused by downstream packet loss.
What is docsQosCmDsidStatsSeqNumMissing?
This counter records how many times the expected packet sequence number was found to be missing, indicating that one or more data packets failed to arrive at the cable modem. Sequence number gaps are typically caused by packet loss on the downstream (network-to-modem) direction, which degrades service quality. Cable operators use this metric to diagnose QoS issues and identify links with excessive downstream packet loss.
Examples
Walk all instances (SNMPv2c):
snmpwalk -v2c -c public <target> 1.3.6.1.4.1.4491.2.1.21.1.22.1.2 snmpwalk -v2c -c public <target> DOCS-QOS3-MIB::docsQosCmDsidStatsSeqNumMissing
Get a specific instance (index 1):
snmpget -v2c -c public <target> 1.3.6.1.4.1.4491.2.1.21.1.22.1.2.1 snmpget -v2c -c public <target> DOCS-QOS3-MIB::docsQosCmDsidStatsSeqNumMissing.1
Start monitoring DOCSIS 3.0/3.1 cable modem/CMTS (QoS bonded-channel, vendor-neutral CableLabs standard) with a free 30-day trial of IPNetwork Monitor. Create custom SNMP monitor using the DOCS-QOS3-MIB::docsQosCmDsidStatsSeqNumMissing OID value, configure state conditions and alerts, and monitor any DOCSIS 3.0/3.1 cable modem/CMTS (QoS bonded-channel, vendor-neutral CableLabs standard) from a single console.
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 |
| 1.3.6.1.4.1.4491.2.1.21 | docsQos3Mib | CLAB-DEF-MIB |
| Numeric OID | Name | Module |
|---|---|---|
| 1.3.6.1.4.1.4491.2.1.21.1 | docsQosMibObjects | DOCS-QOS3-MIB |
| 1.3.6.1.4.1.4491.2.1.21.1.22 | docsQosCmDsidStatsTable | DOCS-QOS3-MIB |
| 1.3.6.1.4.1.4491.2.1.21.1.22.1 | docsQosCmDsidStatsEntry | DOCS-QOS3-MIB |
| 1.3.6.1.4.1.4491.2.1.21.1.22.1.2 | docsQosCmDsidStatsSeqNumMissing | DOCS-QOS3-MIB |