Cisco Bug: CSCur25803 - CMTS does not send ds override for interfaces that shares primary ds-ch
Nov 27, 2020
- Cisco uBR10000 Series Universal Broadband Routers
Known Affected Releases
Symptom: cmts does not send ds override in the RNG_RSP. Conditions: 1.Two mac-domains share downstream channel configuration and have the same DS service group, so modems can receive MDD from both mac-domains. 2.CM locks the primary channel of wrong mac-domain.And CM picks up the primary MDD from the the wrong mac-domain. CMTS should send DS override to CM instead of US override. Exapmle topology which may hit this issue: interface Cable8/1/1 downstream Integrated-Cable 8/1/2 rf-channel 0-3 interface Cable8/1/2 downstream Integrated-Cable 8/1/3 rf-channel 0-3 cable fiber-node 155 downstream Integrated-Cable 8/1/2 rf-channel 0-3 downstream Integrated-Cable 8/1/3 rf-channel 0-3 upstream Cable 8/1 connector 12 CM is connected with 8/1/2. when CM ranging it locks the primary channel of 8/1/1.
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