Preview Tool

Cisco Bug: CSCuj45187 - CMTS fails to override the modem to the correct upstream after B-INIT

Last Modified

Feb 19, 2018

Products (1)

  • Cisco uBR10000 Series Universal Broadband Routers

Known Affected Releases


Description (partial)

After DPC3925 CM upgrade the fw, we observe that if it trys the last known good upstream frequency (say it's UCID1) via  B-INIT-RNG-REQs. And the configuration in the CMTS has this US frequencies of both UCID 1 and UCID 4  and the modem US is physically cabled to UCID 4. When the modem sends out the B-INIT-RNG-REQs for UCID=1, it is picked up by the UCID 4 and the CMTS sends a RNG-RSP for UCID-4. But CM cannot recognize it and keeps sending B-INIT-RNG-REQ, in CMTS, the CM status is stuck in init(r1).

CMTS image: 12.2(33)SE2
CM: DPC3925 with 5.5.3 image
Bug details contain sensitive information and therefore require a account to be viewed.

Bug Details Include

  • Full Description (including symptoms, conditions and workarounds)
  • Status
  • Severity
  • Known Fixed Releases
  • Related Community Discussions
  • Number of Related Support Cases
Bug information is viewable for customers and partners who have a service contract. Registered users can view up to 200 bugs per month without a service contract.