Configuring Flap List Operation Using Snmp (Optional) - Cisco cBR-8 Configuration And Troubleshooting Manual

Configuring Flap List Operation Using SNMP (optional)

In some instances, you might adjust certain values for the cable upstream power-adjust command: If
Note
CMs cannot complete ranging because they have reached maximum power levels, increase the continue
pwr-level parameter beyond the default value of 2 dB. Values larger than 10 dB on "C" versions of cable
interface line cards, or 5 dB on FPGA versions, are not recommended. If the flap list shows CMs with a
large number of power adjustments, but the CMs are not detected as "noisy," decrease the noise perc-pwr-adj
value. If too many CMs are unnecessarily detected as "noisy," increase the percentage.
Configuring Flap List Operation Using SNMP (optional)
To configure the Flap List Troubleshooting feature on the Cisco CMTS using SNMP, set the appropriate
cssFlapObjects attributes in the CISCO-CABLE-SPECTRUM-MIB. the table lists each of the configurable
attributes:
Table 32: Flap-List Configuration Attributes
Attribute
ccsFlapListMaxSize
ccsFlapListCurrentSize
ccsFlapAging
ccsFlapInsertionTime
ccsFlapPowerAdjustThreshold
Cisco cBR Series Converged Broadband Routers Troubleshooting and Network Management Configuration
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204
Type
Integer32
Integer32
Integer32
Integer32
Integer32
Range
1
1 to 65536
1 to 65536
1 to 86400
60 to 86400
1 to 10
Flap List Troubleshooting
Description
The maximum number of
modems that a flap list can
support per line card. The
2
default is 100.
The current number of modems
3
in the flap list.
The flap entry aging threshold
in minutes. The default is 10080
minutes (180 hours or 7 days).
The worst-case insertion time,
in seconds. If a cable modem
has not completed the
registration stage within this
interval, the cable modem is
inserted into the flap list. The
default value is 90 seconds.
When the power of the modem
is adjusted beyond the power
adjust threshold, the modem is
inserted into the flap list.