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Lose internet, then speeds drops

Silverberg1988
Tuning in

Ive had solid 1gig speeds for aslong as ive had the service, but in the last 2 weeks or so, i keep getting packet loss, followed by my internet dropping out. When it comes back up it will not go any higher than 90 down and 40 up. If i reboot my modem its fine for a day, then does the exact same thing. Any help would be appriciated.

My modem info:

Downstream bonded channels

Channel	Frequency (Hz)	Power (dBmV)	SNR (dB)	Modulation	Channel ID
1	331000000	4	41	QAM 256	25
2	139000000	4.7	41	QAM 256	1
3	147000000	4.8	41	QAM 256	2
4	155000000	4.8	41	QAM 256	3
5	163000000	4.8	41	QAM 256	4
6	171000000	4.8	41	QAM 256	5
7	179000000	4.8	41	QAM 256	6
8	187000000	4.9	41	QAM 256	7
9	195000000	5.2	41	QAM 256	8
10	203000000	5.3	41	QAM 256	9
11	211000000	5.5	41	QAM 256	10
12	219000000	5.5	42	QAM 256	11
13	227000000	5.4	42	QAM 256	12
14	235000000	5.3	42	QAM 256	13
15	243000000	5.3	42	QAM 256	14
16	251000000	5.1	42	QAM 256	15
17	259000000	4.8	42	QAM 256	16
18	267000000	4.6	42	QAM 256	17
19	275000000	4.5	41	QAM 256	18
20	283000000	4.3	41	QAM 256	19
21	291000000	4.3	41	QAM 256	20
22	299000000	4.1	41	QAM 256	21
23	307000000	4.1	41	QAM 256	22
24	315000000	4	41	QAM 256	23
25	323000000	3.9	41	QAM 256	24
26	339000000	4.2	42	QAM 256	26
27	347000000	4.3	42	QAM 256	27
28	355000000	4.3	42	QAM 256	28
29	363000000	4.3	42	QAM 256	29
30	371000000	4.2	41	QAM 256	30
31	379000000	4.2	41	QAM 256	31
Downstream bonded channels

Channel	Locked Status	RxMER (dB)	Pre RS Errors	Post RS Errors
1	Locked	41	1	0
2	Locked	41	0	0
3	Locked	41	0	0
4	Locked	41	0	0
5	Locked	41	0	0
6	Locked	41	0	0
7	Locked	41	0	0
8	Locked	41	0	0
9	Locked	41	0	0
10	Locked	41	0	0
11	Locked	41	0	0
12	Locked	42	0	0
13	Locked	42	0	0
14	Locked	42	0	0
15	Locked	42	0	0
16	Locked	42	0	0
17	Locked	42	0	0
18	Locked	42	0	0
19	Locked	41	0	0
20	Locked	41	2	0
21	Locked	41	3	0
22	Locked	41	3	0
23	Locked	41	0	0
24	Locked	41	0	0
25	Locked	41	0	0
26	Locked	42	2	0
27	Locked	42	0	0
28	Locked	42	0	0
29	Locked	42	1	0
30	Locked	41	0	0
31	Locked	41	1	0
Upstream bonded channels

Channel	Frequency (Hz)	Power (dBmV)	Symbol Rate (ksps)	Modulation	Channel ID
0	46200000	31.3	5120	QAM 64	3
1	39400000	31.5	5120	QAM 64	4
2	32600000	31.8	5120	QAM 64	9
3	23600000	32	5120	QAM 64	10
Upstream bonded channels

Channel	Channel Type	T1 Timeouts	T2 Timeouts	T3 Timeouts	T4 Timeouts
0	ATDMA	0	0	0	0
1	ATDMA	0	0	0	0
2	ATDMA	0	0	1	0
3	ATDMA	0	0	0	0
General Configuration

Network access	Allowed
Maximum Number of CPEs	3
Baseline Privacy	Enabled
DOCSIS Mode	3.1
Config file	cmreg-vmdg660-bbt076+voc-b.cm
Primary Downstream Service Flow

SFID	12614
Max Traffic Rate	1230000450 bps
Max Traffic Burst	42600bytes
Min Traffic Rate	0 bps
SFID	12616
Max Traffic Rate	128000 bps
Max Traffic Burst	3044bytes
Min Traffic Rate	0 bps
Primary Upstream Service Flow

SFID	12613
Max Traffic Rate	110000274 bps
Max Traffic Burst	42600bytes
Min Traffic Rate	0 bps
Max Concatenated Burst	42600bytes
Scheduling Type	Best Effort
SFID	12615
Max Traffic Rate	128000 bps
Max Traffic Burst	3044bytes
Min Traffic Rate	0 bps
Max Concatenated Burst	1522bytes
Scheduling Type	Best Effort
Network Log

Time	Priority	Description
22-05-2023 17:10:07	notice	REGISTRATION COMPLETE - Waiting for Operational status
22-05-2023 17:10:01	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;
22-05-2023 17:09:58	notice	TLV-11 - unrecognized OID;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
22-05-2023 17:09:55	warning	DHCP WARNING - Non-critical field invalid in response ;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
22-05-2023 17:09:53	notice	Honoring MDD; IP provisioning mode = IPv4
22-05-2023 17:09:49	critical	No Ranging Response received - T3 time-out;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
22-05-2023 17:09:45	critical	SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
22-05-2023 17:09:28	critical	Cable Modem reboot from UI

 

I hope this info is correct.

 

Thank you

1 ACCEPTED SOLUTION

Accepted Solutions

Client62
Legend

Dropping back to 90Mb/s in the downstream often means a network cable that has come loose or gone out of spec and is de-rating from 1000Mb to 100Mb/s. Restarting the kit may well clear the issue but only for a short time.

Looking at the stats, the 4 upstream channels are all below the preferred power range of 35-49 dBmV, but the good news it they are all on QAM 64 which is the correct rate. Perhaps you are close to the street cabinet and your Hub does not need to transmit any stronger to deliver a satisfactory upstream signal.

See where this Helpful Answer was posted

1 REPLY 1

Client62
Legend

Dropping back to 90Mb/s in the downstream often means a network cable that has come loose or gone out of spec and is de-rating from 1000Mb to 100Mb/s. Restarting the kit may well clear the issue but only for a short time.

Looking at the stats, the 4 upstream channels are all below the preferred power range of 35-49 dBmV, but the good news it they are all on QAM 64 which is the correct rate. Perhaps you are close to the street cabinet and your Hub does not need to transmit any stronger to deliver a satisfactory upstream signal.