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Forum Discussion
Frizzel
Oct 19, 2017Initiate
CM1000 RNG-RSP Issues
Since the new firmware update of V3.01.02 that was pushed out to Comcast I have been receiving "RNG-RSP CCAP Commanded Power in Excess of 6db Below the Value Correstponding to the Top of the DRW" err...
OrbiWANKenobi
Oct 21, 2017Star
I'm having the exact same issue. My new CM1000 modem is logging dozens of the following message triplets per day and a simple ping shows that I'm dropping lots of packets because of it, which obviously is messing up my throughput and general internet usability (MAC value intentionally masked):
RNG-RSP CCAP Commanded Power in Excess of 6 dB Below the Value Corresponding to the Top of the DRW;CM-MAC=xx:xx:xx:xx:xx:xx;CMTS-MAC=xx:xx:xx:xx:xx:xx;CM-QOS=1.1;CM-VER=3.1;
RNG-RSP CCAP Commanded Power Exceeds Value for Pmax;CM-MAC=xx:xx:xx:xx:xx:xx;CMTS-MAC=xx:xx:xx:xx:xx:xx;CM-QOS=1.1;CM-VER=3.1;
Dynamic Range Window violation
I also have Comcast/Xfinity (West Palm Beach, FL area) and have been frustrated with this. The closest info I've been able to find is some other forum where someone posted a similar problem and stated that that after some advanced troubleshooting, they eventually determined it was an issue with the software running on the box on the pole, and had nothing to do with his wiring to or within the home.
So I'm not sure if that issue is related, or if there is a mismatch between the software installed on the external hardware vs the software being pushed to these new consumer modems, but I can tell you its frustrating. I pay for 150MB and I just ran a speed test and it returned a fraction of 1MB download speed. So once again I am rebooting everything to see if that will temporarily "heal" the issue -- until another hour or two where it happens again.
AidMeNow
Mar 20, 2018Aspirant
I have the same issue. ISP= Mediacom
It seems that the DocSys 3.1 technology cannot be properly implemented by the ISP advertising that 1GB down stream service. The line runs too hot the Node pops an error then you and a few neighbors lose signal for a few minutes to an hour and the cycle begins again.
It seems to have something to do witht he SYNC time Syncronization error. Aka the Timing that the ISP uses kind of like your PC clock.
3-17-2018, 9:37:27 | Critical(3) | "SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;;CM-MAC=XX:XX:XX:XX:XX:XX;CMTS-MAC=00:10:10:11:51:41;CM-QOS=1.1;CM-VER=3.1;" |