Hello All,
Recently I've been experiencing random intermittent internet drops every hour or so. It would recover after 5-20 seconds but it makes online gaming impossible.
The only thing suspicious I could find in the router logs is a message "[SYS] LED dim off" followed by "[SYS] LED dim on(led pattern: )" after 5 minutes. Every time my internet is down, there will be an "LED dim off" in the System log.
I tried rebooting the router and re-plugging every cable, but it didn't solve the problem. I wonder if anyone has run into this in the past, any insight/help would be appreciated. Thanks!
Check your ethernet connections for any looping and ensure that there aren't any IP conflicts. Check for any bad cabling as well. Try turning off any IPV6 settings. How is your gaming system connected (wired or wireless)?
IPv6 is now disabled across all service regions after a command push from the Automatic Configuration Server (ACS), so this is unlikely caused by an IPv6 problem.
This sounds like the problem is upstream of the router, namely the cable connecting the router to the ONT, or the ONT itself, or the fiber line feeding the ONT. In the router logs, are there any indications of loss of WAN ethernet link?
Nope, nothing that I could find.
To give you an example, here are the router's system logs.
| 01/07/2024 12:51:31 PM | Online | 0:25:08 |
| 01/07/2024 12:51:26 PM | No Internet connection | 0:00:05 |
| 01/07/2024 12:47:31 PM | Online | 0:03:55 |
| 01/07/2024 12:47:30 PM | No Internet connection | 0:00:01 |
| 01/07/2024 12:47:27 PM | Online | 0:00:03 |
| 01/07/2024 12:47:21 PM | No Internet connection | 0:00:06 |
Ok, the log is suggesting this is an intermittent wireless connection issue and may have to do with your device.
Could you plug an Ethernet cable between your computer and the router to see whether the Internet is still intermittent? Are you on WiFi? Did you enable 6GHz radios? If so, does your device support WPA3?
[please see the updated responses below, as the information here may not be accurate any more as more information are considered.]
I've disabled wifi on the router a long time ago. My PC is directly connected to the router via Ethernet.
Imo it's clearly not a device issue since the System Log has some correlated events (LED off at the same time when PC internet drops).
I'm not sure why there are wifi logs when it's disabled, but there are a bunch of logs with the prefix “[WIFI.6][ADV]” every few minutes, even when the internet is healthy. So I guess it's more like a routine check or something.
Do you have these log entries in the System Log?
[WAN.6][SYS] WAN link down
[WAN.6][SYS] WAN link up, 1000 Mbps full duplex
Do you have these log entries in the Advanced Log?
[CLOUD.3][ADV] curl_easy_perform() failed:(6) Error.
[CLOUD.4][ADV] ping WAN failed, try again.
No, everything looks normal except for the "LED dim on/off"
Ok, then I am curious as to what this could be. LED Dim off would be triggered if the WAN Link is down, but the log is not indicating that.
Please check your private message, thanks.
No update as of now, and I'm still experiencing the issue.
Unless I get help to resolve this I'm seriously considering switching my ISP...
Did you try a different Ethernet cable between the router and the PC. It should not matter...since you reported drops on WiFi as well.
I would go ask them for the ONT alarms as a last resort.
Latest drop happened at 2024 Jan 8 19:28:53 EST
IPv6 has been disabled all the time on my router
| 01/14/2024 8:01:05 PM | Online | 0:02:09 |
| 01/14/2024 8:01:04 PM | No Internet connection | 0:00:01 |
| 01/14/2024 8:01:02 PM | Online | 0:00:02 |
| 01/14/2024 8:00:56 PM | No Internet connection | 0:00:06 |
| 01/14/2024 8:00:02 PM | Online | 0:00:54 |
| 01/14/2024 8:00:02 PM | No Internet connection | 0 |
| 01/14/2024 7:59:59 PM | Online | 0:00:03 |
| 01/14/2024 7:59:54 PM | No Internet connection | 0:00:05 |
| 01/14/2024 7:56:58 PM | Online | 0:02:56 |
| 01/14/2024 7:56:57 PM | No Internet connection | 0:00:01 |
| 01/14/2024 7:56:53 PM | Online | 0:00:04 |
| 01/14/2024 7:56:48 PM | No Internet connection | 0:00:05 |
| 01/14/2024 7:55:11 PM | Online | 0:01:37 |
| 01/14/2024 7:55:06 PM | No Internet connection | 0:00:05 |
Happened again today, I've lost my patience with Verizon tbh
Hi,
I have had this same issue for a while now - at TWO separate locations (I moved about 6 months ago and it was re-occuring at the previous place too. Both with verizon FIOS. Connection drops for 3-5 seconds and reconnects, but as the original poster mentioned, this is incredibly disruptive. It happens about 10-15 times a day sporadically.
So I started looking into it in the router to try and figure it out, and then came across this post. I have those same [SYS] LED dim off in the system logging.
I also noticed in the LAN DHCP log there is usually an event around the same time. For example, this is what I get:
*FROM SYSTEM LOG*
2024 Jan 15 08:19:38
CR1000A
notice
[SYS] LED dim off
*FROM LAN DHCP LOG*
2024 Jan 15 08:19:43
dhcpd
info
[LDHCP] DHCPACK on 192.168.1.2 to MACADDRESS (COMPUTERNAME) via br-lan
2024 Jan 15 08:19:43
dhcpd
info
[LDHCP] DHCPREQUEST for 192.168.1.2 from MACADDRESS (COMPUTERNAME) via br-lan
There is no power loss at the router/computer as far as I can tell, so not sure why its getting that LED dim off error.
I assume the LED dim off error is the main issue, and the DHCP bit may just indicate reconnection (and not be indicative of anything?)
Anyways, its super frustrating and disruptive, and the interesting bit is that this happened in two separate residences (both in Boston, MA) - which makes me believe its not related to wiring (or seems less likely to have the exact same issue at two different locations). For the original poster, are you in Boston (or Massachusetts?).
Any help would be greatly appreciated. Thanks
Yes, I'm in Massachusetts.
The DHCP log indicates reconnection, I noticed the same in the past and disabled LAN DHCP after binding static ip to all my devices, but it didn't fix the problem.
Thanks for sharing this, now it seems this issue is not an isolated one but exists on a larger scale.
What's the model of your routers? Given there are no logs about connection loss(which would have indicated an upstream issue), I suspect the router is defective,
I have the CR1000A router - Got in mid-2022 timeframe.
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