onderwerp Re: Slow and unstable internet connection in Archief

Slow and unstable internet connection

juliuslau — Tue, 19 Aug 2025 09:06:15 GMT

Hi, I have a Ziggo internet plan (250mbps download/30mbps upload) for more than 3 years. Everything was fine and I have not changed any configurations and physical setup since the beginning. However, the internet became unstable and slow for a few days. I couldn't even watch a youtube video in 144p without pausing multiple times. I have checked that there were no scheduled maintenance in my area and I have used the service scan provided by Ziggo to try to identify the issue. Though, the tool suggested that there were no problem in the modem and the wifi. But when I used other internet speed testing tools a few minutes ago, they suggested that the download speed was around 0.2mbps to 3.5mbps and the upload speed was around 0.8mbps to 2.5mbps. I have tried to restart my wifi router but the problem still persist. Does anyone know any possible solutions for this issue? Thank you in advance!

Sorry for using English in this community. My Dutch is not very good.

Re: Slow and unstable internet connection

juliuslau — Tue, 19 Aug 2025 09:16:30 GMT

Here is my configuration in case it's useful

Re: Slow and unstable internet connection

Bert — Tue, 19 Aug 2025 09:17:12 GMT

To assess your incoming and outgoing signal, can you post the full pages of downstream and upstream values from your modem here, along with a screenshot and the last few days' network history?

Where can I find the upstream and downstream values for my modem?

https://community.ziggo.nl/t5/Tips-van-Ziggo/Waar-vind-ik-de-up-en-downstreamwaarden-van-mijn-modem/ba-p/695389

And can you post a photo of the first point where Ziggo enters your home, showing any splitters, amplifiers, and the modem in the photo?

Re: Slow and unstable internet connection

juliuslau — Tue, 19 Aug 2025 09:36:39 GMT

Downstream bonded channels

Channel Frequency (Hz) Power (dBmV) SNR (dB) Modulation Channel ID

1	578000000	6	37	256qam	1
2	594000000	5	37	256qam	3
3	602000000	5	37	256qam	20
4	610000000	5	37	256qam	5
5	618000000	5	37	256qam	22
6	626000000	5	37	256qam	7
7	634000000	5	37	256qam	24
8	642000000	5	37	256qam	9
9	650000000	5	37	256qam	26
10	666000000	5	37	256qam	28
11	682000000	5	37	256qam	30
12	690000000	5	37	256qam	15
13	698000000	5	37	256qam	32
14	706000000	5	37	256qam	17
15	714000000	5	37	256qam	0
16	722000000	4	37	256qam	19
17	738000000	4	37	256qam	21
18	762000000	4	37	256qam	0
19	778000000	3	36	256qam	0
20	786000000	3	36	256qam	27
21	794000000	3	35	256qam	0
22	802000000	4	36	256qam	29
23	810000000	4	36	256qam	0
24	818000000	4	36	256qam	31

Downstream bonded channels

Channel Locked Status RxMER (dB) Pre RS Errors Post RS Errors

1	Locked	37.636	80795141	0
2	Locked	37.356	77884564	6
3	Locked	37.636	77493201	395272
4	Locked	37.636	77888334	5
5	Locked	37.636	77493982	395499
6	Locked	37.356	77882002	5
7	Locked	37.356	77484657	405043
8	Locked	37.636	77890407	6
9	Locked	37.636	77472923	404952
10	Locked	37.636	77473279	405061
11	Locked	37.636	77485744	404980
12	Locked	37.356	77892261	5
13	Locked	37.636	77497853	396317
14	Locked	37.636	77892096	2156
15	Locked	37.356	77757147	123923
16	Locked	37.356	77876301	5
17	Locked	37.636	77893092	5
18	Locked	37.356	77753083	123898
19	Locked	36.610	77768777	124483
20	Locked	36.387	77859110	34369
21	Locked	35.247	77769145	124728
22	Locked	36.175	77878266	30
23	Locked	36.387	77772611	123945
24	Locked	36.387	77897123	594

Upstream bonded channels

Channel Frequency (Hz) Power (dBmV) Symbol Rate (ksps) Modulation Channel ID

1	58800000	42	5.120	64qam	1
2	38400000	42	5.120	64qam	4
3	45200000	42	5.120	64qam	3
4	52000000	42	5.120	64qam	2

Upstream bonded channels

Channel Channel Type T1 Timeouts T2 Timeouts T3 Timeouts T4 Timeouts

1	2.0	0	0	0	0
2	2.0	0	0	0	0
3	2.0	0	0	0	0
4	2.0	0	0	0	0

Network Log

Time Priority Description

19-08-2025 11:31:29	notice	Illegal - Dropped FORWARD packet: src=2a03:2880:f145:0081:face:b00c:0000:4c63 MAC=17:10:91:68:9D:86;CM-MAC=68:02:b8:b0:b5:fb;CMTS-MAC=00:17:10:91:68:9d;CM-QOS=1.1;CM-VER=3.0;
19-08-2025 11:24:38	notice	GUI Login Status - Login Sucess from LAN interface; client ip=[192.168.178.66];CM-MAC=68:02:b8:b0:b5:fb;CMTS-MAC=00:17:10:91:68:9d;CM-QOS=1.1;CM-VER=3.0;
19-08-2025 11:24:29	notice	Illegal - Dropped FORWARD packet: src=2a03:2880:f245:00c6:face:b00c:0000:7260 MAC=17:10:91:68:9D:86;CM-MAC=68:02:b8:b0:b5:fb;CMTS-MAC=00:17:10:91:68:9d;CM-QOS=1.1;CM-VER=3.0;
19-08-2025 11:23:36	notice	GUI Login Status - Login Sucess from LAN interface; client ip=[192.168.178.66];CM-MAC=68:02:b8:b0:b5:fb;CMTS-MAC=00:17:10:91:68:9d;CM-QOS=1.1;CM-VER=3.0;
19-08-2025 11:22:46	notice	Illegal - Dropped FORWARD packet: src=2a04:4e42:0009:0000:0000:0000:0000:0288 MAC=17:10:91:68:9D:86;CM-MAC=68:02:b8:b0:b5:fb;CMTS-MAC=00:17:10:91:68:9d;CM-QOS=1.1;CM-VER=3.0;
19-08-2025 10:54:00	notice	TR069 start;CM-MAC=68:02:b8:b0:b5:fb;CMTS-MAC=00:17:10:91:68:9d;CM-QOS=1.1;CM-VER=3.0;
19-08-2025 10:53:07	notice	Illegal - Dropped FORWARD packet: src=212.54.39.29 MAC=00:17:10:91:68:9D;CM-MAC=68:02:b8:b0:b5:fb;CMTS-MAC=00:17:10:91:68:9d;CM-QOS=1.1;CM-VER=3.0;
19-08-2025 10:53:01	notice	REGISTRATION COMPLETE - Waiting for Operational status;CM-MAC=68:02:b8:b0:b5:fb;CMTS-MAC=00:17:10:91:68:9d;CM-QOS=1.1;CM-VER=3.0;
19-08-2025 10:52:54	warning	Lost MDD Timeout;CM-MAC=68:02:b8:b0:b5:fb;CMTS-MAC=00:17:10:91:68:9d;CM-QOS=1.1;CM-VER=3.0;
19-08-2025 10:52:44	warning	MIMO Event MIMO: Stored MIMO=-1 post cfg file MIMO=-1;CM-MAC=68:02:b8:b0:b5:fb;CMTS-MAC=00:17:10:91:68:9d;CM-QOS=1.1;CM-VER=3.0;
01-01-1970 01:01:23	notice	Cable Modem Reboot - due to power reset;CM-MAC=68:02:b8:b0:b5:fb;CMTS-MAC=00:00:00:00:00:00;CM-QOS=1.1;CM-VER=3.0;
19-08-2025 10:45:44	notice	Illegal - Dropped INPUT packet: src=180.150.226.80 MAC=00:17:10:91:68:9D;CM-MAC=68:02:b8:b0:b5:fb;CMTS-MAC=00:17:10:91:68:9d;CM-QOS=1.1;CM-VER=3.0;
18-08-2025 18:40:34	critical	No Ranging Response received - T3 time-out;CM-MAC=68:02:b8:b0:b5:fb;CMTS-MAC=00:17:10:91:68:9d;CM-QOS=1.1;CM-VER=3.0;
18-08-2025 18:39:14	notice	Illegal - Dropped FORWARD packet: src=2a00:1450:4025:0401:0000:0000:0000:00bc MAC=17:10:91:68:9D:86;CM-MAC=68:02:b8:b0:b5:fb;CMTS-MAC=00:17:10:91:68:9d;CM-QOS=1.1;CM-VER=3.0;
18-08-2025 18:14:31	critical	No Ranging Response received - T3 time-out;CM-MAC=68:02:b8:b0:b5:fb;CMTS-MAC=00:17:10:91:68:9d;CM-QOS=1.1;CM-VER=3.0;
18-08-2025 18:11:21	notice	Illegal - Dropped INPUT packet: src=180.150.226.78 MAC=00:17:10:91:68:9D;CM-MAC=68:02:b8:b0:b5:fb;CMTS-MAC=00:17:10:91:68:9d;CM-QOS=1.1;CM-VER=3.0;
18-08-2025 15:46:49	notice	TR069 start;CM-MAC=68:02:b8:b0:b5:fb;CMTS-MAC=00:17:10:91:68:9d;CM-QOS=1.1;CM-VER=3.0;
18-08-2025 15:46:41	notice	Illegal - Dropped FORWARD packet: src=2603:1026:0c03:7069:0000:0000:0000:0002 MAC=17:10:91:68:9D:86;CM-MAC=68:02:b8:b0:b5:fb;CMTS-MAC=00:17:10:91:68:9d;CM-QOS=1.1;CM-VER=3.0;
18-08-2025 15:46:19	notice	REGISTRATION COMPLETE - Waiting for Operational status;CM-MAC=68:02:b8:b0:b5:fb;CMTS-MAC=00:17:10:91:68:9d;CM-QOS=1.1;CM-VER=3.0;
18-08-2025 15:46:14	warning	Lost MDD Timeout;CM-MAC=68:02:b8:b0:b5:fb;CMTS-MAC=00:17:10:91:68:9d;CM-QOS=1.1;CM-VER=3.0;

Here are the downstream, upstream values and the network log. Thanks!

Re: Slow and unstable internet connection

juliuslau — Tue, 19 Aug 2025 09:56:50 GMT

forgot to attach a screenshot

Re: Slow and unstable internet connection

Bert — Tue, 19 Aug 2025 11:27:05 GMT

I'm seeing a lot of signal interference, order a free technician here => De Ziggo monteur | Klantenservice | Ziggo

Re: Slow and unstable internet connection

juliuslau — Tue, 19 Aug 2025 12:08:59 GMT

Thank you!

Re: Slow and unstable internet connection

Marco — Fri, 22 Aug 2025 08:43:31 GMT

Good morning @juliuslau, i'm very curious to know if the connection is working properly after the technician's visit. We'd love to hear from you. 😄

Re: Slow and unstable internet connection

juliuslau — Fri, 22 Aug 2025 08:54:31 GMT

Not yet. The technician has cancelled my appointment on Thursday as he/she believed that the cause lies outside my house as many of my neighbors experienced the same issue. Though it seems like the issue is related to aging modems (a technician has visited one of my neighbors on Wednesday) and my internet speed has not been improved yet. So I had to make another appointment and the technician should be coming on next Monday.

Re: Slow and unstable internet connection

juliuslau — Mon, 25 Aug 2025 10:04:23 GMT

The technician has came and the problem is solved. Thanks for the help!

Re: Slow and unstable internet connection

Jesse — Mon, 25 Aug 2025 11:26:15 GMT

Glad to hear the problem is resolved. Thank you for letting us know!