ccsUpSpecMgmtCriteria

Defines the criteria that trigger a change in
frequency hopping, modulation or channel width.  
              
Depending on the type of linecards, the criteria 
are slightly different:
              
For the linecards that have no Hardware 
Based Spectrum Management capability like 
the uBR-MC1xC, change in modulation or frequency
occurs in the following criteria:
              
1) Change from modulation profile 1 to 
   modulation profile 2 would occur when CMTS 
   detects the SNR that goes below the 
   threshold and either corr FEC or uncorr FEC 
   is above the threshold.  In this case, 
   snrBelowThres and either corrFecAboveThres or 
   uncorrFecAboveThres bits will get set. 
              
2) Change from modulation profile 2 to 
   modulation profile 1 would occur when CMTS 
   detects the SNR goes above the threshold+3
   and both corr FEC and uncorr FEC are 
   below the threshold.  In this case, 
   snrAboveThres and corrFecBelowThres
   and uncorrFecBelowThres bits will get set. 
              
3) Change in frequency or frequency hopping would
   occur when CMTS detects no active modem on the link.  
   In this case, noActiveModem bit will get
   set accordingly.
              
              
For the linecards that have the Hardware Based 
Spectrum Management capability, change in 
frequency, modulation or channel width occurs 
in the following criteria:
              
1) when CMTS detects the SNR or CNR goes below the 
   threshold and either corr FEC or uncorr FEC is 
   above the threshold.  In this case, 
   either snrBelowThres or cnrBelowThres and 
   either corrFecAboveThres or uncorrFecAboveThres 
   bits will get set. 
              
2) when CMTS detects the SNR or CNR goes above the 
   threshold + 3 and both corr FEC and uncorr FEC are 
   below the threshold.  In this case, 
   either snrAboveThres or cnrAboveThres and both 
   corrFecBelowThres and uncorrFecBelowThres bits 
   will get set. 
              
3) when CMTS detects no active modem on the link or 
   uncorr FEC is above ccsUpSpecMgmtFecUnCorrectThres2. 
   In this case noActiveModem or 
   uncorrFecAboveSecondThres bit will get set 
   accordingly.
              
Note: The order of frequency, modulation or channel 
width changes for the advanced spectrum management
linecards will be determined based on the selection of 
the ccsUpSpecMgmtHopPriority.

MIB

CISCO-CABLE-SPECTRUM-MIB

OID

.1.3.6.1.4.1.9.9.114.1.3.1.1.23

Type

column

Access

readonly

Status

current

Parent

ccsUpSpecMgmtEntry

Table

ccsUpSpecMgmtTable

Siblings

24