Reduced Upstream Bandwidth

Question

Hi,
I have noticed packet loss in my BQM, see:
https://www.thinkbroadband.com/broadband/monitoring/quality/share/3724cb7b1e81e3d599c85c69d85cdda0563079e8
Downstream bandwidth is good, but Upstream bandwidth is 1-2Mbps (usually ~25Mbps). The VM Hub has been rebooted and the numbers look OK, except for a few channels not operating at 64QAM.
Can you see any RF issues on the segment, or could this be congestion elsewhere?
Downstream bonded channels
ChannelFrequency (Hz)Power (dBmV)SNR (dB)ModulationChannel ID11390000001.237256 qam121470000001.537256 qam231550000001.537256 qam341630000001.537256 qam451710000001.537256 qam561790000001.437256 qam671870000001.237256 qam78195000000138256 qam892670000000.538256 qam17102750000000.537256 qam1811283000000138256 qam19122910000001.237256 qam20132990000001.537256 qam2114307000000238256 qam2215315000000238256 qam2316323000000238256 qam24173310000002.438256 qam25183390000002.238256 qam2619347000000238256 qam27203550000001.938256 qam28213630000001.538256 qam29223710000001.238256 qam3023379000000138256 qam31243870000000.538256 qam32

Downstream bonded channels
ChannelLocked StatusRxMER (dB)Pre RS ErrorsPost RS Errors1Locked37.6002Locked37.6503Locked37.6504Locked37.6505Locked37.3506Locked37.3407Locked37.6608Locked38.6509Locked38.65010Locked37.64011Locked38.66012Locked37.64013Locked37.34014Locked38.65015Locked38.65016Locked38.97017Locked38.65018Locked38.65019Locked38.64020Locked38.65021Locked38.66022Locked38.65023Locked38.65024Locked38.6170
Upstream bonded channels
ChannelFrequency (Hz)Power (dBmV)Symbol Rate (ksps)ModulationChannel ID14960000046512064 qam122360047844.8512016 qam533660000045.3512064 qam343010000045512064 qam454310000045.8512064 qam2
Upstream bonded channels
ChannelChannel TypeT1 TimeoutsT2 TimeoutsT3 TimeoutsT4 Timeouts1ATDMA00002ATDMA00003ATDMA00004ATDMA00005ATDMA0000
&nbsp;

10/08/2025 12:29:16noticeLAN login Success;CM-MAC=18:35:d1:75:48:e3;CMTS-MAC=00:4f;CM-QOS=1.1;CM-VER=3.0;09/08/2025 07:52:19criticalNo Ranging Response received - T3 time-out;CM-MAC=18:35::e3;CMTS-MAC=0e:4f;CM-QOS=1.1;CM-VER=3.0;29/07/2025 00:39:18ErrorDHCP RENEW WARNING - Field invalid in response v4 option;CM-MAC=1:48:e3;CMTS-MAC=0ce:4f;CM-QOS=1.1;CM-VER=3.0;26/07/2025 19:40:4Warning!RCS Partial Service;CM-MAC=18:35:d1:75:48:e3;CMTS-MAC=004f;CM-QOS=1.1;CM-VER=3.0;25/07/2025 17:06:4criticalNo Ranging Response received - T3 time-out;CM-MAC=18:3e3;CMTS-MAC=:4f;CM-QOS=1.1;CM-VER=3.0;
&nbsp;
[Mod - MAC addresses removed]

mmelbourne · Answer

Just spotted that there is a live "Broadband/TV issue" in the area. This may or may not be related. I'll recheck the situation once this issue has been cleared.

Matthew_ML · Answer

Hey mmelbourne, thank you for reaching out and we are sorry to hear about your connection issues,
We've taken a look at our side and we can see everything is looking great at the moment.
Has this improved at all?

Forum Discussion

Reduced Upstream Bandwidth

Downstream bonded channels

Downstream bonded channels

Upstream bonded channels

Upstream bonded channels

2 Replies

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Possible Problem : Excessive Downstream/Upstream Power Levels

Channel	Frequency (Hz)	Power (dBmV)	SNR (dB)	Modulation	Channel ID
1	139000000	1.2	37	256 qam	1
2	147000000	1.5	37	256 qam	2
3	155000000	1.5	37	256 qam	3
4	163000000	1.5	37	256 qam	4
5	171000000	1.5	37	256 qam	5
6	179000000	1.4	37	256 qam	6
7	187000000	1.2	37	256 qam	7
8	195000000	1	38	256 qam	8
9	267000000	0.5	38	256 qam	17
10	275000000	0.5	37	256 qam	18
11	283000000	1	38	256 qam	19
12	291000000	1.2	37	256 qam	20
13	299000000	1.5	37	256 qam	21
14	307000000	2	38	256 qam	22
15	315000000	2	38	256 qam	23
16	323000000	2	38	256 qam	24
17	331000000	2.4	38	256 qam	25
18	339000000	2.2	38	256 qam	26
19	347000000	2	38	256 qam	27
20	355000000	1.9	38	256 qam	28
21	363000000	1.5	38	256 qam	29
22	371000000	1.2	38	256 qam	30
23	379000000	1	38	256 qam	31
24	387000000	0.5	38	256 qam	32

Channel	Locked Status	RxMER (dB)	Pre RS Errors
1	Locked	37.6	0
2	Locked	37.6	5
3	Locked	37.6	5
4	Locked	37.6	5
5	Locked	37.3	5
6	Locked	37.3	4
7	Locked	37.6	6
8	Locked	38.6	5
9	Locked	38.6	5
10	Locked	37.6	4
11	Locked	38.6	6
12	Locked	37.6	4
13	Locked	37.3	4
14	Locked	38.6	5
15	Locked	38.6	5
16	Locked	38.9	7
17	Locked	38.6	5
18	Locked	38.6	5
19	Locked	38.6	4
20	Locked	38.6	5
21	Locked	38.6	6
22	Locked	38.6	5
23	Locked	38.6	5
24	Locked	38.6	17

Channel	Frequency (Hz)	Power (dBmV)	Symbol Rate (ksps)	Modulation	Channel ID
1	49600000	46	5120	64 qam	1
2	23600478	44.8	5120	16 qam	5
3	36600000	45.3	5120	64 qam	3
4	30100000	45	5120	64 qam	4
5	43100000	45.8	5120	64 qam	2

10/08/2025 12:29:16	notice	LAN login Success;CM-MAC=18:35:d1:75:48:e3;CMTS-MAC=00:4f;CM-QOS=1.1;CM-VER=3.0;
09/08/2025 07:52:19	critical	No Ranging Response received - T3 time-out;CM-MAC=18:35::e3;CMTS-MAC=0e:4f;CM-QOS=1.1;CM-VER=3.0;
29/07/2025 00:39:18	Error	DHCP RENEW WARNING - Field invalid in response v4 option;CM-MAC=1:48:e3;CMTS-MAC=0ce:4f;CM-QOS=1.1;CM-VER=3.0;
26/07/2025 19:40:4	Warning!	RCS Partial Service;CM-MAC=18:35:d1:75:48:e3;CMTS-MAC=004f;CM-QOS=1.1;CM-VER=3.0;
25/07/2025 17:06:4	critical	No Ranging Response received - T3 time-out;CM-MAC=18:3e3;CMTS-MAC=:4f;CM-QOS=1.1;CM-VER=3.0;

Channel	Channel Type	T1 Timeouts	T2 Timeouts	T3 Timeouts	T4 Timeouts
1	ATDMA	0	0	0	0
2	ATDMA	0	0	0	0
3	ATDMA	0	0	0	0
4	ATDMA	0	0	0	0
5	ATDMA	0	0	0	0