Frustrated by wireless modem reboots 3-4 times/day

[Michael Gauthier]

I have had 4 different modem/wireless routers from 3 different vendors over a period of 3 years using Suddenlink. Three of them were my own purchase and one was a rental from Suddenlink. All of them reboot several times a day from 2 to 8 times, and the one I have now is 2-3 times a day. When I say reboot, I mean the 2g and 5g networks go away and reappear a couple minutes later. After they reappear, it takes another 3-4 minutes before I am connected to the internet again so each outage is about 6 minutes or so.

This is the current modem: https://www.amazon.com/gp/product/B0764HVN5J/?tag=snbforums-20

For a long time I thought it was something at Suddenlink but each modem has it's own outage frequency and I am now thinking it might be something in my network. My network has 6 windows PC's all using DHCP on Window 10, 3 iOS devices, 1 smart TV, 1 access point, and 1 wireless printer. I also use 2 wireless connected Raspberry Pi's to control my sprinkler and misting systems. The only hiccup in this network is one of the PC's frequently complains about an IP address conflict. I have tried many different web suggestions to fixing that but none help. At this point, there are NO devices using a fixed IP address. and the only hard wired device via Ethernet cable is the access point.

What might cause this and how can I troubleshoot this problem?

 

[Tech9]

What is the modem's log saying? Do you see the link light turning off during the disconnections?

 

[degrub]

When the wireless drops out, is the modem actually re-booting and re-acquiring ISP connection or is it just the wireless goes away but a wired connection is ok ?

Has the ISP cable plant been checked out by the ISP for proper grounding and shielding into your house up to the demarcation point ?
When you had their modem, did they check the cable installation up to the modem ?

What do the cable modem logs say ?
You might post a listing that traverses one of these events.

Is your modem/router plugged into a UPS ?
You might be seeing power droops that the modem power brick cannot handle. A large motor (AC/Heater system maybe ) turning on can cause this. It can also inject noise spikes in to the power system. Other motors might depending on how loaded your house power is.

If you keep the PC with IP conflict messages unplugged , does the modem/router (rebooting ?) issue go away ?

 

[Michael Gauthier]

When the wireless drops out, is the modem actually re-booting and re-acquiring ISP connection or is it just the wireless goes away but a wired connection is ok ?
I don't actually know about that. I will check the next time it goes out by connecting my PC to the AP.

Suddenlink has replaced the connection from a little way down the street and the part under ground twice. They claim the signal is perfect at the modem.

Is your modem/router plugged into a UPS ?

THIS IS SOMETHING I NEVER THOUGHT OF!!! UPS is on order!!!

If you keep the PC with IP conflict messages unplugged , does the modem/router (rebooting ?) issue go away ?

Sorry, I should have mentioned in the OP that I shut that down and it did not help.

There isn't much in the modem system log. I have never cleared it and everything is dated today. Here it is:

2021-05-01 16:51:02.00 [UNPRIV TCP packet: ]TCP Packet - Source:89.248.165.48,45573 Destination:24.54.117.171,8080
2021-05-01 16:51:18.00 [UNPRIV TCP packet: ]TCP Packet - Source:89.248.165.65,52905 Destination:24.54.117.171,37299
2021-05-01 16:51:49.00 [UNPRIV TCP packet: ]TCP Packet - Source:89.248.165.121,56832 Destination:24.54.117.171,8257
2021-05-01 16:51:55.00 [UNPRIV UDP packet: ]UDP Packet - Source:193.46.255.109,59182 Destination:24.54.117.171,5060
2021-05-01 16:51:58.00 [UNPRIV TCP packet: ]TCP Packet - Source:205.185.117.46,41825 Destination:24.54.117.171,60001
2021-05-01 16:52:02.00 [UNPRIV TCP packet: ]TCP Packet - Source:79.124.62.55,50650 Destination:24.54.117.171,3389
2021-05-01 16:53:08.00 [PRIV TCP packet: ]TCP Packet - Source:5.236.37.9,13342 Destination:24.54.117.171,23
2021-05-01 16:53:23.00 [UNPRIV TCP packet: ]TCP Packet - Source:183.136.225.14,8762 Destination:24.54.117.171,2000
2021-05-01 16:53:28.00 [UNPRIV TCP packet: ]TCP Packet - Source:185.191.34.212,43710 Destination:24.54.117.171,3320
2021-05-01 16:53:34.00 [UNPRIV TCP packet: ]TCP Packet - Source:193.27.228.188,56212 Destination:24.54.117.171,62351
2021-05-01 16:53:45.00 [UNPRIV TCP packet: ]TCP Packet - Source:87.251.70.56,56464 Destination:24.54.117.171,13803
2021-05-01 16:54:08.00 [UNPRIV TCP packet: ]TCP Packet - Source:5.188.156.165,20571 Destination:24.54.117.171,3389
2021-05-01 16:54:25.00 [UNPRIV TCP packet: ]TCP Packet - Source:89.248.165.204,56985 Destination:24.54.117.171,6087
2021-05-01 16:54:46.00 [UNPRIV TCP packet: ]TCP Packet - Source:185.167.96.236,38351 Destination:24.54.117.171,4444
2021-05-01 16:54:50.00 [UNPRIV TCP packet: ]TCP Packet - Source:45.146.165.216,47884 Destination:24.54.117.171,5114
2021-05-01 16:55:06.00 [UNPRIV TCP packet: ]TCP Packet - Source:178.62.233.90,25045 Destination:24.54.117.171,44401
2021-05-01 16:55:15.00 [UNPRIV TCP packet: ]TCP Packet - Source:74.120.14.95,63475 Destination:24.54.117.171,18054
2021-05-01 16:55:23.00 [UNPRIV TCP packet: ]TCP Packet - Source:162.142.125.67,49418 Destination:24.54.117.171,5592
2021-05-01 16:55:42.00 [UNPRIV TCP packet: ]TCP Packet - Source:219.138.150.220,53544 Destination:24.54.117.171,28265
2021-05-01 16:55:48.00 [UNPRIV TCP packet: ]TCP Packet - Source:45.146.165.172,41248 Destination:24.54.117.171,3334
2021-05-01 16:55:55.00 [UNPRIV TCP packet: ]TCP Packet - Source:88.202.190.132,8984 Destination:24.54.117.171,8984
2021-05-01 16:56:28.00 [UNPRIV TCP packet: ]TCP Packet - Source:74.120.14.18,7654 Destination:24.54.117.171,49502
2021-05-01 16:57:12.00 [UNPRIV UDP packet: ]UDP Packet - Source:46.105.167.199,6881 Destination:24.54.117.171,8081
2021-05-01 16:58:11.00 [PRIV TCP packet: ]TCP Packet - Source:114.38.246.197,29135 Destination:24.54.117.171,23
2021-05-01 16:58:41.00 [UNPRIV TCP packet: ]TCP Packet - Source:89.248.165.63,59325 Destination:24.54.117.171,6263
2021-05-01 16:58:43.00 [UNPRIV TCP packet: ]TCP Packet - Source:89.248.165.8,52998 Destination:24.54.117.171,38134
2021-05-01 16:59:21.00 [UNPRIV TCP packet: ]TCP Packet - Source:183.240.204.10,26554 Destination:24.54.117.171,2222
2021-05-01 16:59:35.00 [UNPRIV TCP packet: ]TCP Packet - Source:193.27.228.63,48152 Destination:24.54.117.171,12288
2021-05-01 17:00:25.00 [UNPRIV TCP packet: ]TCP Packet - Source:89.248.165.101,46743 Destination:24.54.117.171,5289
2021-05-01 17:01:20.00 [UNPRIV TCP packet: ]TCP Packet - Source:89.248.165.59,41750 Destination:24.54.117.171,3504

 

[Tech9]

What is the status of the LEDs during the "reboot"?

 

[Michael Gauthier]

What is the status of the LEDs during the "reboot"?

I'll check that at the next dropout.