All MIBs › CISCO-CABLE-SPECTRUM-MIB › ccsCmFlapCrcErrorNum
ccsCmFlapCrcErrorNum
Module: CISCO-CABLE-SPECTRUM-MIB
OID (symbolic): CISCO-CABLE-SPECTRUM-MIB::ccsCmFlapCrcErrorNum
OID (numeric): 1.3.6.1.4.1.9.9.114.1.1.11.1.9
Node type: OBJECT-TYPE
Type: Unsigned32
Access: read-only
Description: The number of times the CMTS upstream receiver flagged a packet with a CRC error.
If ccsCmFlapCrcErrorNum is high, it indicates the cable upstream may have high noise level. The modem may not be flapping yet but it may be a potential problem.
This object can indicate: Intermittent upstream, Laser clipping, or Noise bursts.
Laser clipping can happen if the signal power is too high when the upstream electrical signal is converted to an optical signal. When it happens the more input produces less output, until finally there is no more increase in output. This phenomena is called laser clipping.
The value of this object can be reset to zero if this entry is removed from the table and then re-added, or if the ccsCmFlapResetNow object was set to true(1). The value of the object ccsCmFlapLastResetTime indicates the last reset time.
What is ccsCmFlapCrcErrorNum?
Read-only counter of CRC errors flagged by the CMTS upstream receiver for this specific cable modem; a high count suggests high upstream noise that may lead to flapping.
Examples
Walk all instances (SNMPv2c):
snmpwalk -v2c -c public <target> 1.3.6.1.4.1.9.9.114.1.1.11.1.9 snmpwalk -v2c -c public <target> CISCO-CABLE-SPECTRUM-MIB::ccsCmFlapCrcErrorNum
Get a specific instance (index 1):
snmpget -v2c -c public <target> 1.3.6.1.4.1.9.9.114.1.1.11.1.9.1 snmpget -v2c -c public <target> CISCO-CABLE-SPECTRUM-MIB::ccsCmFlapCrcErrorNum.1
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OID Breakdown
Upper-level ancestors (8 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 |
| 1.3.6.1.4.1.9 | cisco | CAT2600-MIB |
| 1.3.6.1.4.1.9.9 | ciscoMgmt | CISCO-SMI |
| Numeric OID | Name | Module |
|---|---|---|
| 1.3.6.1.4.1.9.9.114 | ciscoCableSpectrumMIB | CISCO-CABLE-SPECTRUM-MIB |
| 1.3.6.1.4.1.9.9.114.1 | ciscoCableSpectrumMIBObjects | CISCO-CABLE-SPECTRUM-MIB |
| 1.3.6.1.4.1.9.9.114.1.1 | ccsFlapObjects | CISCO-CABLE-SPECTRUM-MIB |
| 1.3.6.1.4.1.9.9.114.1.1.11 | ccsCmFlapTable | CISCO-CABLE-SPECTRUM-MIB |
| 1.3.6.1.4.1.9.9.114.1.1.11.1 | ccsCmFlapEntry | CISCO-CABLE-SPECTRUM-MIB |
| 1.3.6.1.4.1.9.9.114.1.1.11.1.9 | ccsCmFlapCrcErrorNum | CISCO-CABLE-SPECTRUM-MIB |