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Lately on a daily basis our Optimum internet drops out , anywhere from noon to evening. only solution has been rebooting the modem but sometimes router as well. Modem is running fw 3.01.04 and router 1.02.90. Attached are the recent logs , based on the critical errors seems the modem could be the issue? Appreciate any assistance.
Thanks for the quick reply, cable connections attached. This suddenly started happening a couple weeks ago, before then only an occassional reboot. There was a splitter for the cable box but I removed that a few days ago since now only using internet. Barreled the two cables together. Using the stock yellow rj45 cable between modem and router which was two feet too long and coiled up. But again nothing has really change, other than the cold of winter . And come to think of it there is a grounding block the cable runs through outside. But if any wiring issue why inermitent?
More than likey its intermittent because the modem uses a range of channels. I'd be betting on interference/line issues on some of them. Reason I say this is while your levels are in spec for their actual power levels, (other than the non-locked channels) they're out of spec because they should be within 3.5dbmv of each other. Yours is out of this. You have some really weak channels and strong channels. So something is causing interference. And thats also giving you the power errors from your logs.
When you reboot/reset a modem, it sometimes pulls other channels. But those channels can change. So I'd be betting on the reboot is pulling in a good set and then its changing at some point to other channels and those have the issue.
Thanks, understand and following along. So interferance, on the cable line itself or with the modem? This is just with the modem then and not the router? As mentioned I barreled the lines together after removing splitter but for the 30' run from outside demark I'm going to replace with one piece of 1694A . Also, haven't dug into it, any way of turning off select channels that are causing the issue. And last , would buying a new modem solve the problem?
buying a modem more than likely wouldn't solve the problem. There's always the remote chance its something internal to the modem but I'd be betting on either the line in the home or running to the home.
Only had other colors besides black and white of 1694A so I replaced the cable with Belden 9116, Attached is the cable connection, looks better and more in line?
Better? sure. You're at least not as wide range with the spread of power levels.
Good for use? tougher to tell as you don't have all channels locked, your levels are actually a bit high (not always bad if not to high).
but the logs after running it will tell us more.
Before it was certain channels within the range that had issues. not all of them did. The screensnip of the cable connections page doesn't always tell the whole story. using it for a bit of time and then reposting that page plus the logs tell us more.
After seeming steady last evening this morning woke up to intermittent internet connection. Attached before and after CM1000 reboot, also at the bottom R7800 router logs. So is this just the modem that is having the issue or could it be something hardwired to the router (Magic Jack phone, surveillance camera, PC and Phillips light controller) . The router shows all green status with all devices connected, only the occasional No Internet on main page. Could it be the CAT cable between the modem and router? And the interference suggested, some external RF or strictly the copper from street to modem? Does the line need an attenuator? I’ve seen others mention having some unlocked channels but have no issue. Are they all needed or can be selectively turned off? Any other suggestions? Thanks for sticking with me on this, really would like to get to the bottom tonight and keep other users happy.
its not just about the unlocked channels.You can have some unlocked if docsis 3.1 is connecting. Thats all isp driven.
But your power levels are all over the place. they should be within 3.5dbmv of each other. You can be a bit outside of that but you're way outside of that.
photos 1 goes from -4.1 to 7.1dbmv. A 11.2dbmv difference.
Set 2 goes from: -4.3 to 7 dbmv. a 11.3dbmv difference.
If your modem is direct connected to the wire coming into the home, then the ISP needs to check your line as its way out of spec.
So followed up with a visit from ISP, tech verified cable from pole had an issue and replaced (in the dark no less). Signal was hot and ended up padding 9 db at the modem. All was good until a day or two later and now still have to reboot modem once or twice a day. Keep getting warning message RNG-RSP CCAP Commanded Power in Excess of 6 dB Below the Value Corresponding to the Top of the DRW, more attached. Called ISP and sending tech again, any thoughts on logs attached, again appreciate the assistance.
They replaced it but now your signal is a bit hot and bouncing out of the power window.
they actually need to either add a different attenuator or turn the amplifier they're using down as its pretty hot if thats the signal you're getting with an atenuator involved.
Thanks for the reply. Just checked cable conn, between 11.0 and 12.0 dBmV. Tech had said ISP look for 12dBmV or less at the modem and read online that -15 to 15 should be good. So what do you recommend for a CM1000?
