Constant Disconnection

[Tiaan]

I get constant and, seemingly random, disconnections. The log either indicates T3 or T4 errors, for example:
- T3: No Ranging Response received - T3 time-out; (...)
- T4: Received Response to Broadcast Maintenance Request, But no Unicast Maintenance opportunities received - T4 time out; (...)

This usually results in me waiting anywhere from 10-30+ minutes for reconnecting. Sometimes I just unplug and replug everything (usually in that 30+ minute range).

From what I can see, this is likely more a problem with the connection to the main network, rather than issues with my equipment, which would make sense as the equipment is brand new.

I don't seem to have a way of contacting support other than through the forum, hence the post.

[Kain_W]

Hi there sgreen93,

Thanks for your post and welcome back to the community. 

Sorry to see you're experiencing issues, from checking our system everything does seem to be in spec, are wired devices affected?

Let us know,

[sgreen93]

Hi Kain,

Thanks for getting back to me so quick. Everything is currently behaving, but this is a recurring issue that mainly seems to happen in the evenings. If you’re able to look through data from the last 24 hours, then it was affecting both wireless and wired devices between approx 9pm last night and 2am this morning.

It’s currently behaving, but I’m not overly optimistic about it staying that way - as said, it’s been happening quite regularly and always starts playing up from around 5-9pm onwards. Previously I thought it was network issues, so after looking on here decided to look at the logs and the amount of T3 and T4 errors was huge.

[Kain_W]

Thanks for the response there, 

I'm glad to hear it has currently subsided.

I'd advise if this does pick up again to open a thread and post network logs so our team can gain a further understanding.

How to do this;
• Please go to http://192.168.0.1 (or http://192.168.100.1 - if in modem mode),
• Don't log in, click on 'router status'
• Copy/paste the data from each of the tabs as text into a 'REPLY' as opposed to 'QUICK REPLY'. Please do not include your MAC address.
Also, set up a 'Broadband Quality Monitor'. This will monitor the state of your connection and record any network dropouts etc https://www.thinkbroadband.com/broadband/monitoring/quality)
Give it some time to gather data and then click 'Share Live graph' and paste the 'Direct Link' into the forum for us to review the issues. 
Thanks,

[breakerdesu]

Hello I seem to be on the same boat and recently started getting this.
Here are my network status:

Cable Modem StatusItem Status Comments

Acquired Downstream Channel(Hz)	331000000	Locked
Ranged Upstream Channel(Hz)	60300000	Ranged
Provisioning State	Online	Operational

Downstream:

Downstream bonded channels

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

1	331000000	3.8	41	QAM 256	25
2	139000000	5.2	41	QAM 256	1
3	147000000	5.2	41	QAM 256	2
4	155000000	5.3	41	QAM 256	3
5	163000000	5.4	41	QAM 256	4
6	171000000	5.5	40	QAM 256	5
7	179000000	5.6	40	QAM 256	6
8	187000000	5.7	40	QAM 256	7
9	195000000	5.9	40	QAM 256	8
10	203000000	5.9	41	QAM 256	9
11	211000000	6	41	QAM 256	10
12	219000000	5.9	41	QAM 256	11
13	227000000	5.7	41	QAM 256	12
14	235000000	5.6	41	QAM 256	13
15	243000000	5.3	41	QAM 256	14
16	251000000	5	41	QAM 256	15
17	259000000	4.6	41	QAM 256	16
18	267000000	4.4	41	QAM 256	17
19	275000000	4.1	41	QAM 256	18
20	283000000	3.9	41	QAM 256	19
21	291000000	3.9	40	QAM 256	20
22	299000000	3.8	41	QAM 256	21
23	307000000	3.8	41	QAM 256	22
24	315000000	3.6	40	QAM 256	23
25	323000000	3.7	40	QAM 256	24
26	339000000	4	40	QAM 256	26
27	347000000	4	41	QAM 256	27
28	355000000	3.9	41	QAM 256	28
29	363000000	4	40	QAM 256	29
30	371000000	4.1	41	QAM 256	30
31	379000000	4.2	41	QAM 256	31

Upstream:

Upstream bonded channels

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

0	60300000	33	5120	QPSK	6
1	53700000	33	5120	QPSK	7
2	46200000	33	5120	QPSK	8
3	39400000	33	5120	QPSK	9

Configuration:

General Configuration

Network accessMaximum Number of CPEsBaseline PrivacyDOCSIS ModeConfig file

Allowed

3

Enabled

3.1

cmreg-vmdg660-bbt053+voc-b.cm

Primary Downstream Service Flow

SFIDMax Traffic RateMax Traffic BurstMin Traffic RateSFIDMax Traffic RateMax Traffic BurstMin Traffic Rate

11928

575000085 bps

42600bytes

0 bps

11930

128000 bps

3044bytes

0 bps

Primary Upstream Service Flow

SFIDMax Traffic RateMax Traffic BurstMin Traffic RateMax Concatenated BurstScheduling TypeSFIDMax Traffic RateMax Traffic BurstMin Traffic RateMax Concatenated BurstScheduling Type

11927

55000085 bps

42600bytes

0 bps

42600bytes

Best Effort

11929

128000 bps

3044bytes

0 bps

1522bytes

Best Effort

Network log: 

Network Log

Time Priority Description

15-07-2023 03:31:39	critical	Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
15-07-2023 03:27:20	notice	REGISTRATION COMPLETE - Waiting for Operational status
15-07-2023 03:27:19	critical	Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
15-07-2023 03:27:12	notice	DS profile assignment change. DS Chan ID: 32; Previous Profile: ; New Profile: 1 2 3.;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
15-07-2023 03:26:54	warning	DHCP WARNING - Non-critical field invalid in response ;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
15-07-2023 03:26:52	notice	Honoring MDD; IP provisioning mode = IPv4
15-07-2023 03:26:47	critical	No Ranging Response received - T3 time-out;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
15-07-2023 03:26:38	critical	SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
15-07-2023 03:26:27	critical	Cable Modem Reboot due to power button reset
14-07-2023 05:27:36	critical	No Ranging Response received - T3 time-out;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
14-07-2023 05:27:30	critical	SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
14-07-2023 05:27:29	critical	DHCP FAILED - Request sent, No response;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
14-07-2023 05:26:59	critical	Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
14-07-2023 05:26:25	critical	DHCP FAILED - Request sent, No response;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
14-07-2023 05:26:04	critical	Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
14-07-2023 05:24:54	critical	DHCP FAILED - Discover sent, no offer received;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
14-07-2023 05:24:08	critical	No Ranging Response received - T3 time-out;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
14-07-2023 05:24:01	critical	SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
14-07-2023 05:23:49	critical	Cable Modem Reboot due to power button reset

and i ran i diagnostic and this came up regarding ethernet connection with a cross.

[breakerdesu]

and to add to that i seem to be getting alot of upload packet loss
which explains why i cant stream on twitch

[Natalie_L]

Hi breakerdesu, 

Welcome to the Community and thank you for posting. 

We are very sorry to hear of the issues you have been experiencing with your broadband service. 

In order to run some checks from our side, I am going to pop you over a private message to take a few details. 

Please check your inbox (red bar at the top of the page) for a message from me.

Thanks,