ccsCmFlapMissNum
CISCO-CABLE-SPECTRUM-MIB ·
.1.3.6.1.4.1.9.9.114.1.1.11.1.8
Object
column
SNMPv2-SMIUnsigned32
The number of times the CMTS misses the Ranging request
from the Cable Modem.
The CMTS issues a Station Maintenance packet every 10 seconds
and waits for a Ranging request from the Cable Modem. If the
CMTS misses a Ranging request within 25 msec then the Miss
Object will be incremented.
If ccsCmFlapTotalNum is high, Hit and Miss are high but
ccsCmFlapPowerAdjustmentNum and ccsCmFlapInsertionFailNum
are low then the flapping is probably caused by the modem
going up and down.
Miss 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.
Context
- MIB
- CISCO-CABLE-SPECTRUM-MIB
- OID
.1.3.6.1.4.1.9.9.114.1.1.11.1.8- Type
- column
- Access
- readonly
- Status
- current
- Parent
- ccsCmFlapEntry
- Table
- ccsCmFlapTable
- Siblings
- 13
Syntax
SNMPv2-SMIUnsigned32
- Source
- SNMPv2-SMIUnsigned32
- Base type
Unsigned32
Values & Constraints
Type Constraints
range: 0..4294967295
Related Objects
Sibling Objects
| Object | Type | Syntax | OID |
|---|---|---|---|
| ccsCmFlapDownstreamIfIndex The ifIndex of the Cable downstream interface whose ifType
is docsCableDownstream(128). | column | IF-MIBInterfaceIndex | .1.3.6.1.4.1.9.9.114.1.1.11.1.1 |
| ccsCmFlapPowerAdjustmentNum The number of times the Cable Modem upstream transmit power
is adjusted during station maintenance. When the adjustment is
greater than the power adjustment threshold the number w… | column | SNMPv2-SMIUnsigned32 | .1.3.6.1.4.1.9.9.114.1.1.11.1.10 |
| ccsCmFlapTotalNum Whenever the Cable Modem passes flap detection, then the flap
number is increased.
There are 3 flap detectors defined:
(1) When ccsCmFlapInsertionFailNum is increas… | column | SNMPv2-SMIUnsigned32 | .1.3.6.1.4.1.9.9.114.1.1.11.1.11 |
| ccsCmFlapResetNow Setting this object to true(1) will set the value of
certain objects in this table to 0 and does not
destroy the entry, so the ccsCmFlapCreateTime will be
unchanged. Reading this… | column | SNMPv2-TCTruthValue | .1.3.6.1.4.1.9.9.114.1.1.11.1.12 |
| ccsCmFlapLastResetTime The last time that all the statistical objects of this entry
are started from zero. There are several ways to restart the
the statistical objects from zero. Setting the object
ccs… | column | SNMPv2-TCDateAndTime | .1.3.6.1.4.1.9.9.114.1.1.11.1.13 |
| ccsCmFlapRowStatus Controls and reflects the status of rows in this table.
When a cable modem triggers a flap detector, if an entry
does not already exist for this cable modem,
an en… | column | SNMPv2-TCRowStatus | .1.3.6.1.4.1.9.9.114.1.1.11.1.14 |
| ccsCmFlapUpstreamIfIndex The ifIndex of the Cable upstream interface whose ifType is
docsCableUpstream(129). The CMTS detects a flapping Cable
Modem from its Cable upstream interface. | column | IF-MIBInterfaceIndex | .1.3.6.1.4.1.9.9.114.1.1.11.1.2 |
| ccsCmFlapMacAddr MAC address of the Cable Modem's Cable interface which
identifies a flapping Cable Modem. | column | SNMPv2-TCMacAddress | .1.3.6.1.4.1.9.9.114.1.1.11.1.3 |
| ccsCmFlapLastFlapTime The flap time is set whenever the Cable Modem triggers a
flap detector. | column | SNMPv2-TCDateAndTime | .1.3.6.1.4.1.9.9.114.1.1.11.1.4 |
| ccsCmFlapCreateTime The time that this entry was added to the table. If an
entry is removed and then later re-added, there may be a
discontinuity in the counters associated with this entry.
This time… | column | SNMPv2-TCDateAndTime | .1.3.6.1.4.1.9.9.114.1.1.11.1.5 |
| ccsCmFlapInsertionFailNum The number of times a Cable Modem registered more frequently
than expected. Excessive registration is defined as the
presence of a time span between two successive registration
c… | column | SNMPv2-SMIUnsigned32 | .1.3.6.1.4.1.9.9.114.1.1.11.1.6 |
| ccsCmFlapHitNum The number of times the CMTS receives the Ranging request
from the Cable Modem.
The CMTS issues a Station Maintenance transmit opportunity
at a typical rate of once… | column | SNMPv2-SMIUnsigned32 | .1.3.6.1.4.1.9.9.114.1.1.11.1.7 |
| ccsCmFlapCrcErrorNum 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 noi… | column | SNMPv2-SMIUnsigned32 | .1.3.6.1.4.1.9.9.114.1.1.11.1.9 |