CM700/Nighthawk Dropping Internet + DoS/WLAN access rejected spam

All of these problems began showing in the logs a few minutes after updating to V1.2.0.24_1.0.1. My internet has been disconnecting multiple times a day (modem loses connection). In the logs I...

Troubleshooting

whatisgoingon

Aspirant

Jul 30, 2018

I never knew I could login to the modem like this so I'm a bit unfamiliar with the data. Unfortunately, I recently rebooted the modem to regain internet connection which seems to have cleared the logs. I do see:

No Ranging Response received - T3 time-out

MIMO Event MIMO: Stored MIMO=-1 post cfg file MIMO=-1

Downstream

Channel	Lock Status	Modulation	Channel ID	Frequency	Power	SNR	Correctables	UnCorrectables
1	Locked	QAM 256	17	603000000 Hz	-7.7 dBmV	37.3 dB	0	0
2	Locked	QAM 256	18	609000000 Hz	-7.7 dBmV	37.3 dB	0	0
3	Locked	QAM 256	19	615000000 Hz	-7.2 dBmV	37.3 dB	0	0
4	Locked	QAM 256	20	621000000 Hz	-7.4 dBmV	37.3 dB	0	0
5	Locked	QAM 256	21	627000000 Hz	-8.0 dBmV	37.3 dB	0	0
6	Locked	QAM 256	22	633000000 Hz	-8.2 dBmV	36.6 dB	7	0
7	Locked	QAM 256	23	639000000 Hz	-7.7 dBmV	37.6 dB	7	0
8	Locked	QAM 256	24	645000000 Hz	-8.2 dBmV	37.3 dB	0	0
9	Locked	QAM 256	25	651000000 Hz	-8.2 dBmV	37.3 dB	0	0
10	Locked	QAM 256	26	657000000 Hz	-8.2 dBmV	36.6 dB	0	0
11	Locked	QAM 256	27	663000000 Hz	-8.2 dBmV	37.3 dB	0	0
12	Locked	QAM 256	28	669000000 Hz	-7.7 dBmV	37.3 dB	0	0
13	Locked	QAM 256	29	675000000 Hz	-7.2 dBmV	37.3 dB	0	0
14	Locked	QAM 256	30	681000000 Hz	-7.2 dBmV	37.6 dB	0	0
15	Locked	QAM 256	31	687000000 Hz	-7.2 dBmV	37.3 dB	0	0
16	Locked	QAM 256	32	693000000 Hz	-7.2 dBmV	37.3 dB	6	0
17	Not Locked	N/A	N/A	0 Hz	0.0 dBmV	0.0 dB	0	0
18	Not Locked	N/A	N/A	0 Hz	0.0 dBmV	0.0 dB	0	0
19	Not Locked	N/A	N/A	0 Hz	0.0 dBmV	0.0 dB	0	0
20	Not Locked	N/A	N/A	0 Hz	0.0 dBmV	0.0 dB	0	0
21	Not Locked	N/A	N/A	0 Hz	0.0 dBmV	0.0 dB	0	0
22	Not Locked	N/A	N/A	0 Hz	0.0 dBmV	0.0 dB	0	0
23	Not Locked	N/A	N/A	0 Hz	0.0 dBmV	0.0 dB	0	0
24	Not Locked	N/A	N/A	0 Hz	0.0 dBmV	0.0 dB	0	0
25	Not Locked	N/A	N/A	0 Hz	0.0 dBmV	0.0 dB	0	0
26	Not Locked	N/A	N/A	0 Hz	0.0 dBmV	0.0 dB	0	0
27	Not Locked	N/A	N/A	0 Hz	0.0 dBmV	0.0 dB	0	0
28	Not Locked	N/A	N/A	0 Hz	0.0 dBmV	0.0 dB	0	0
29	Not Locked	N/A	N/A	0 Hz	0.0 dBmV	0.0 dB	0	0
30	Not Locked	N/A	N/A	0 Hz	0.0 dBmV	0.0 dB	0	0
31	Not Locked	N/A	N/A	0 Hz	0.0 dBmV	0.0 dB	0	0
32	Not Locked	N/A	N/A	0 Hz	0.0 dBmV	0.0 dB	0	0

Upstream

Channel	Lock Status	US Channel Type	Channel ID	Symbol Rate	Frequency	Power
1	Locked	ATDMA	2	5120 Ksym/sec	30100000 Hz	54.5 dBmV
2	Not Locked	N/A	Unknown	0 Ksym/sec	0 Hz	0.0 dBmV
3	Not Locked	N/A	Unknown	0 Ksym/sec	0 Hz	0.0 dBmV
4	Not Locked	N/A	Unknown	0 Ksym/sec	0 Hz	0.0 dBmV
5	Not Locked	N/A	Unknown	0 Ksym/sec	0 Hz	0.0 dBmV
6	Not Locked	N/A	Unknown	0 Ksym/sec	0 Hz	0.0 dBmV
7	Not Locked	N/A	Unknown	0 Ksym/sec	0 Hz	0.0 dBmV
8	Not Locked	N/A	Unknown	0 Ksym/sec	0 Hz	0.0 dBmV

54.5 dBmV seems very high compared to the downstream values or is that normal?

Thanks for the help.

whatisgoingon

Aspirant

Jul 31, 2018

Just experienced another drop in internet. Before it would fix itself but now it seems I need to do a full restart to get the internet working. I was able to grab the log before restarting.

Modem Logs:

Jul 31 2018 07:08:17 Critical (3) Unicast Ranging Received Abort Response - initializing MAC
Jul 31 2018 07:08:17 Critical (3) Unicast Ranging Received Abort Response - initializing MAC
Jul 31 2018 07:08:17 Critical (3) Unicast Ranging Received Abort Response - initializing MAC
Jul 31 2018 07:08:17 Critical (3) Unicast Ranging Received Abort Response - initializing MAC
Jul 31 2018 07:08:17 Critical (3) Unicast Ranging Received Abort Response - initializing MAC
Jul 31 2018 07:08:17 Critical (3) Unicast Ranging Received Abort Response - initializing MAC
Jul 31 2018 07:08:17 Critical (3) Unicast Ranging Received Abort Response - initializing MAC
Jul 31 2018 07:08:17 Critical (3) No Ranging Response received - T3 time-out
Jul 31 2018 07:08:46 Critical (3) Unicast Ranging Received Abort Response - initializing MAC
Jul 31 2018 07:08:47 Critical (3) No Ranging Response received - T3 time-out
Jul 31 2018 07:09:31 Critical (3) Unicast Ranging Received Abort Response - initializing MAC
Jul 31 2018 07:09:31 Critical (3) No Ranging Response received - T3 time-out
Jul 31 2018 07:10:04 Critical (3) Unicast Ranging Received Abort Response - initializing MAC
Jul 31 2018 07:10:04 Critical (3) No Ranging Response received - T3 time-out
Jul 31 2018 07:10:45 Critical (3) Unicast Ranging Received Abort Response - initializing MAC
Jul 31 2018 07:10:45 Critical (3) No Ranging Response received - T3 time-out
Jul 31 2018 07:11:17 Critical (3) Unicast Ranging Received Abort Response - initializing MAC
Jul 31 2018 07:11:17 Critical (3) No Ranging Response received - T3 time-out
Jul 31 2018 07:11:47 Critical (3) Unicast Ranging Received Abort Response - initializing MAC
Jul 31 2018 07:11:47 Critical (3) No Ranging Response received - T3 time-out
Jul 31 2018 07:12:23 Critical (3) Unicast Ranging Received Abort Response - initializing MAC
Jul 31 2018 07:12:24 Critical (3) No Ranging Response received - T3 time-out
Jul 31 2018 07:12:55 Critical (3) Unicast Ranging Received Abort Response - initializing MAC
Jul 31 2018 07:12:56 Critical (3) No Ranging Response received - T3 time-out
Jul 31 2018 07:13:40 Critical (3) Unicast Ranging Received Abort Response - initializing MAC
Jul 31 2018 07:13:40 Critical (3) No Ranging Response received - T3 time-out
Jul 31 2018 07:14:20 Critical (3) Unicast Ranging Received Abort Response - initializing MAC
Jul 31 2018 07:14:20 Critical (3) No Ranging Response received - T3 time-out
Jul 31 2018 07:15:02 Critical (3) Unicast Ranging Received Abort Response - initializing MAC
Jul 31 2018 07:15:02 Critical (3) No Ranging Response received - T3 time-out
Jul 31 2018 07:15:42 Critical (3) Unicast Ranging Received Abort Response - initializing MAC
Jul 31 2018 07:15:42 Critical (3) No Ranging Response received - T3 time-out
Jul 31 2018 07:16:11 Critical (3) Unicast Ranging Received Abort Response - initializing MAC
Jul 31 2018 07:16:12 Critical (3) No Ranging Response received - T3 time-out
Jul 31 2018 07:17:04 Critical (3) Unicast Ranging Received Abort Response - initializing MAC
Jul 31 2018 07:17:05 Critical (3) No Ranging Response received - T3 time-out
Jul 31 2018 07:17:36 Critical (3) Unicast Ranging Received Abort Response - initializing MAC
Jul 31 2018 07:17:36 Critical (3) No Ranging Response received - T3 time-out
Jul 31 2018 07:18:28 Critical (3) Unicast Ranging Received Abort Response - initializing MAC
Jul 31 2018 07:18:28 Critical (3) No Ranging Response received - T3 time-out

And here are some of the router logs. The logs were empty up until July 20th when I upgraded to the latest firmware, except for one event in May. Not sure if this is a coincidence or not. This is from the same time as the modem log (router time is behind 3 hours). Note that this is how the logs look even when I'm not having issues. The other day it seemed to be allowing access to my phone every 5 minutes.

[Access Control] Device [MY-PC] with MAC address [MAC] is allowed to acc Tuesday, July 31,2018 04:31:49

[Access Control] Device [MY-PC] with MAC address [MAC] is allowed to acc Tuesday, July 31,2018 04:30:34

[Access Control] Device [MY-PC] with MAC address [MAC] is allowed to acc Tuesday, July 31,2018 04:29:17

[Internet connected] IP address: xxx.xxx.xxx.xx Tuesday, July 31,2018 04:28:47

[Internet disconnected] Tuesday, July 31,2018 04:28:04

[Access Control] Device [MY-PC] with MAC address [MAC] is allowed to acc Tuesday, July 31,2018 04:28:02

[Access Control] Device [MY-PC] with MAC address [MAC] is allowed to acc Tuesday, July 31,2018 04:26:35

[Access Control] Device [MY-PC] with MAC address [MAC] is allowed to acc Tuesday, July 31,2018 04:25:19

[Access Control] Device [MY-PC] with MAC address [MAC] is allowed to acc Tuesday, July 31,2018 04:23:58

[Access Control] Device [MY-PC] with MAC address [MAC] is allowed to acc Tuesday, July 31,2018 04:22:41

[Access Control] Device [MY-PC] with MAC address [MAC] is allowed to acc Tuesday, July 31,2018 04:21:09

[Internet connected] IP address: xxx.xxx.xxx.xx Tuesday, July 31,2018 04:20:09

[Access Control] Device [MY-PC] with MAC address [MAC] is allowed to acc Tuesday, July 31,2018 04:19:52

[Internet disconnected] Tuesday, July 31,2018 04:19:02

[Access Control] Device [MY-PC] with MAC address [MAC] is allowed to acc Tuesday, July 31,2018 04:18:35

[Access Control] Device [MY-PC] with MAC address [MAC] is allowed to acc Tuesday, July 31,2018 04:17:14

[Access Control] Device [MY-PC] with MAC address [MAC] is allowed to acc Tuesday, July 31,2018 04:15:57

[Access Control] Device [MY-PC] with MAC address [MAC] is allowed to acc Tuesday, July 31,2018 04:14:41

[Access Control] Device [MY-PC] with MAC address [MAC] is allowed to acc Tuesday, July 31,2018 04:13:22

[Access Control] Device [MY-PC] with MAC address [MAC] is allowed to acc Tuesday, July 31,2018 04:12:05

[Access Control] Device [MY-PC] with MAC address [MAC] is allowed to acc Tuesday, July 31,2018 04:10:49

[Access Control] Device [MY-PC] with MAC address [MAC] is allowed to acc Tuesday, July 31,2018 04:09:25

[Access Control] Device [MY-PC] with MAC address [MAC] is allowed to acc Tuesday, July 31,2018 04:08:07

[Access Control] Device [MY-PC] with MAC address [MAC] is allowed to acc Tuesday, July 31,2018 04:06:50

DarrenM
Sr. NETGEAR Moderator
Jul 31, 2018
Yes you have alot of timeouts this is typically a connection issue with the ISP something could of happened to the lines or the cable box out in your neighborhood you will want to have a ISP tech come check the levels and maybe investigate your area.

DarrenM

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CM700/Nighthawk Dropping Internet + DoS/WLAN access rejected spam