All MIBs › DOCS-QOS3-MIB › docsQosUpChCounterExtSgmtDiscards
docsQosUpChCounterExtSgmtDiscards
Module: DOCS-QOS3-MIB
OID (symbolic): DOCS-QOS3-MIB::docsQosUpChCounterExtSgmtDiscards
OID (numeric): 1.3.6.1.4.1.4491.2.1.21.1.15.1.2
Node type: OBJECT-TYPE
Type: Counter32
Access: read-only
Description: This attribute represents the total number of discarded segments on this channel due to segment HCS problems. Discontinuities in the value of this counter can occur at reinitialization of the managed system, and at other times as indicated by the value of ifCounterDiscontinuityTime of the associated MAC Domain interface index.
What is docsQosUpChCounterExtSgmtDiscards?
This counter tracks the total number of upstream segments discarded on a DOCSIS cable modem channel due to Header Check Sequence (HCS) errors. These errors indicate corrupted segment headers caused by physical layer issues. Cable operators monitor this counter to diagnose signal quality problems or physical cable degradation.
Examples
Walk all instances (SNMPv2c):
snmpwalk -v2c -c public <target> 1.3.6.1.4.1.4491.2.1.21.1.15.1.2 snmpwalk -v2c -c public <target> DOCS-QOS3-MIB::docsQosUpChCounterExtSgmtDiscards
Get a specific instance (index 1):
snmpget -v2c -c public <target> 1.3.6.1.4.1.4491.2.1.21.1.15.1.2.1 snmpget -v2c -c public <target> DOCS-QOS3-MIB::docsQosUpChCounterExtSgmtDiscards.1
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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 |
| 1.3.6.1.4.1.4491.2.1.21.1.15 | docsQosUpChCounterExtTable | DOCS-QOS3-MIB |
| 1.3.6.1.4.1.4491.2.1.21.1.15.1 | docsQosUpChCounterExtEntry | DOCS-QOS3-MIB |
| 1.3.6.1.4.1.4491.2.1.21.1.15.1.2 | docsQosUpChCounterExtSgmtDiscards | DOCS-QOS3-MIB |