Cisco OL-4015-08 Guide de dépannage télécharger pdf (Page 329)

11-5

Cisco Broadband Local Integrated Services Solution Troubleshooting Guide

OL-5169-01

Chapter 11 Element Management and MIBs

Cisco uBR7246vxr MIBs

ccsFlapPowerAdjustments The number of times the MTA upstream transmit power is

adjusted during station maintenance. When the adjustment is

greater than the power adjustment threshold the counter will be

increased. The power adjustment threshold is chosen in an

implementation- dependant manner.

The Flap Count (ccsFlapTotal) will be increased when this

counter is increased.

If ccsFlapTotal is high, ccsFlapPowerAdjustments is high but

the Hits and Misses are low and ccsFlapInsertionFails are low

then the flapping is probably caused by an improper transmit

power level setting at the modem end.

This count can indicate:

• Amplifier degradation,

• Poor connections, or

• Wind, moisture, or temperature sensitivity.

Discontinuities in the value of this counter can occur if this

entry is removed from the table and then re-added, and are

indicated by a change in the value of ccsFlapCreateTime.

ccsFlapTotal Whenever the MTA passes flap detection, then the flap counter

is increased.

There are 3 flap detectors defined:

(1) When ccsFlapInsertionFails is increased the Flap count will

be increased.

(2) When the CMTS receives a Miss followed by a Hit then the

Flap count will be increased.

(3) When ccsFlapPowerAdjustments is increased the Flap

count will be increased.

Discontinuities in the value of this counter can occur if this

entry is removed from the table and then re-added, and are

indicated by a change in the value of ccsFlapCreateTime.

ccsFlapLastFlapTime The flap time is set whenever the MTA triggers a flap detector.

Table 11-1 CISCO-CABLE-SPECTRUM-MIB.my Objects (continued)

Object Description

1 2 ... 324 325 326 327 328 329 330 331 332 333 334 ... 369 370

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Cisco OL-4015-08 Guide de dépannage Page 329