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Cisco Bug: CSCtd34588 - US bonded channels stay in continuous ranging

Last Modified

Jan 19, 2010

Products (1)

  • Cisco uBR10000 Series Universal Broadband Routers

Known Affected Releases

12.2SC

Description (partial)

Symptom:

for MTC-mode modem, modem may stuck in continuous ranging state on individual channel. 
Conditions:

after changing, "cable upstream [x] docsis-mode" from TDMA with default QPSK modulation to a ATDMA, the power per channel delta could be as high as 6dBmV. CMTS is unable to make the adjustment correctly, and result in continuous ranging, and power-adjustment.
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