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CM700 high US/UnCorrectables
Hi all, I have been experiencing internet issues for the last 3 years at my home. I found that my US(Upstream) power (modem transmitting data to the ISP) was intermittently maxing out (I forget th...
Have the ISP check the signal and line quality UP to the modem.
Be sure there are not coax cable line splitters in the between the modem and ISP service box.
Be sure your using good quality RG6 coax cable up to the modem.FYI:
Have the ISP check the signal and line quality UP to the modem.
Be sure there are not coax cable line splitters in the between the modem and ISP service box.
Be sure your using good quality RG6 coax cable up to the modem.
FYI:
FURRYe38 wrote:Have the ISP check the signal and line quality UP to the modem.
Be sure there are not coax cable line splitters in the between the modem and ISP service box.
Be sure your using good quality RG6 coax cable up to the modem.
FYI:
Oh god no. Why am I just now learning about this???
I went ahead and installed/ran some tests after reading through badmodems.com.
I installed PingPlotter and, well, I'll post some snips of my results and you tell me.
However, from what I've read regarding the issue..
(Which sounds like the Puma 6 chipset uProcessor essentially halting every x clock cycles)
It certainly appears that I'm experiencing that issue.
The modem I had before this CM700 was a an Arris SB6141. I found this out by a quick google search for T3 T4 timeouts and found my post from 2018: https://forums.timewarnercable.com/t5/Connectivity/T3-T4-Timeouts/td-p/151726
What I've been reading suggests that the SB6141 may have similar issues as it has the Puma5, but I'm also seeing people argue against this.
I am currently researching modems so I can replace this CM700, any recommendations?
If the SB6141 does truly have similar issues, that would make a lot of sense, since I've been dealing with this for the last 3 years and the problem has persisted through both SB6141 and CM700 modems.
Anyway, if you are familiar with the Puma6 chipset issue, definitely let me know if my PingPlotter results point to that problem.
I ran it a few times at differing intervals. 1mS/1000Hz resolution surely makes some kind of problem stand out.
See attachment for 1mS/1Min ping results. I'll try to include the other tests, but it looks like 1 attachment/post.
Thanks for your help!
PingPlotter 1mS/5Min (Timeline seemed to bug out and not include full timespan, but oh well)
PingPlotter 5mS/5Min
You review can post about this over on the DSLReports forum about this if you want too: Xymox is the one who to discuss this with.
https://www.dslreports.com/forum/r31122204-SB6190-Puma6-TCP-UDP-Network-Latency-Issue-Discussion
I recommend any Broadcom based modem:
NGs CM1000, 1100 or 1200 are first choices.
Arris SB61823 or 8200Motorola MB 74## and 8600 series modems
- Great, thanks.
That’s what I figured! I was tempted to buy the new SB8200 due to the Spectrum Analyzer feature, but wanted to avoid Arris only because of the bad memories I had with our old Arris Surfboard that had the Puma5.
I went with the CM1000 since our area won’t be getting fiber for a while and I’m sure I won’t NEED >1Gb/S anytime soon.
I will mark your first reply as the solution when I set up the CM1000 we ordered and verify the problem is no longer visible in PingPlotter. It should be delivered Wednesday. Thanks for your help, Furry.