Slow upload speeds on my CM1000v2

Question

I have been averaging upload speeds between 0.5-5 Mbps. Download speeds are great, averaging 780-800mbps with Cox's Gigablast plan. I am currently using a CM1000v2 moden with a Nighthawk R6900P router. Cox said there are no outages in my area anymopre and the problem is on my end. See attached for event log. Power levels have seemed to be acceptable for downstream and upstream. Please let me know if you have any suggestions, I have been dealing with this issue for over a month.

Thanks!

FURRYe38 · Answer

What are your wired speeds with a PC directly connected to the CM modem with out the R series router online.&nbsp;

plemans · Answer

Your logs are showing line issues.&nbsp;
Got a screen snip of the cable connections page?&nbsp;

AspenMB93 · Answer

I received similar results: 500Mbpd download/ 1.02 Mbps upload.

AspenMB93 · Answer

See below for cable connection tables:&nbsp;&nbsp;Starting Frequency&lt;tabindex=-1&gt;Startup Procedure&lt;/tabindex=-1&gt;ProcedureStatusCommentAcquire Downstream Channel381000000 HzLockedConnectivity StateOKOperationalBoot StateOKOperationalSecurityEnableBPI+IP Provisioning ModeHonor MDDIPv4 only&lt;tabindex=-1&gt;Downstream Bonded Channels&lt;/tabindex=-1&gt;ChannelLock StatusModulationChannel IDFrequencyPowerSNR / MERUnerrored CodewordsCorrectable CodewordsUncorrectable Codewords1LockedQAM25637381000000 Hz2.7 dBmV44.6 dB1334438430102LockedQAM25633357000000 Hz2.7 dBmV44.1 dB1332813476003LockedQAM25634363000000 Hz2.7 dBmV44.6 dB1332820587104LockedQAM25635369000000 Hz2.7 dBmV44.1 dB1332829348005LockedQAM25636375000000 Hz2.8 dBmV44.5 dB1332855787006LockedQAM25638387000000 Hz2.9 dBmV44.7 dB1332862300107LockedQAM25639393000000 Hz3.1 dBmV44.7 dB1332868462308LockedQAM25640399000000 Hz3.4 dBmV44.9 dB1332877388409LockedQAM25641405000000 Hz3.8 dBmV45.1 dB133288276914010LockedQAM2569729000000 Hz0.3 dBmV40.7 dB136572297714011LockedQAM25610735000000 Hz-0.3 dBmV41.8 dB136572960716012LockedQAM25611741000000 Hz-0.1 dBmV42.6 dB136573337625013LockedQAM25612747000000 Hz-0.3 dBmV41.0 dB136573647921014LockedQAM25642411000000 Hz4.1 dBmV44.9 dB13329231634015LockedQAM25614759000000 Hz-0.7 dBmV42.4 dB136574417536016LockedQAM25615765000000 Hz-0.5 dBmV42.5 dB136574795119017LockedQAM25616771000000 Hz-1.3 dBmV42.1 dB136574933628018LockedQAM25617777000000 Hz-1.0 dBmV42.3 dB136575396934019LockedQAM25618783000000 Hz-0.7 dBmV42.5 dB136575724933020LockedQAM25619789000000 Hz-0.9 dBmV42.5 dB136576172037021LockedQAM25620795000000 Hz-0.9 dBmV42.4 dB136576586825022LockedQAM25622807000000 Hz-0.8 dBmV42.7 dB136576931016023LockedQAM25623813000000 Hz-1.6 dBmV42.1 dB136577334517024LockedQAM25624819000000 Hz-1.6 dBmV42.1 dB136577718313025LockedQAM25625825000000 Hz-2.0 dBmV41.8 dB136578015113026LockedQAM25626831000000 Hz-1.8 dBmV42.1 dB136578387617027LockedQAM25627837000000 Hz-1.7 dBmV42.0 dB136578902812028LockedQAM25628843000000 Hz-2.2 dBmV41.8 dB136579226010029LockedQAM25645429000000 Hz4.0 dBmV45.2 dB13330374163030LockedQAM25630855000000 Hz-2.5 dBmV41.6 dB136579878912031LockedQAM25631861000000 Hz-3.1 dBmV40.8 dB136579942611032LockedQAM25632867000000 Hz-2.9 dBmV41.3 dB136580081930&lt;tabindex=-1&gt;Upstream Bonded Channels (Partial Service)&lt;/tabindex=-1&gt;ChannelLock StatusModulationChannel IDFrequencyPower1LockedATDMA136800000 Hz42.8 dBmV2LockedATDMA230400000 Hz42.8 dBmV3LockedATDMA324000000 Hz43.3 dBmV4LockedATDMA417600000 Hz43.5 dBmV5LockedATDMA560000000 Hz36.0 dBmV6LockedATDMA667000000 Hz37.5 dBmV7LockedATDMA774000000 Hz39.8 dBmV8LockedATDMA881000000 Hz35.3 dBmV&lt;tabindex=-1&gt;Downstream OFDM Channels&lt;/tabindex=-1&gt;ChannelLock StatusModulation / Profile IDChannel IDFrequencyPowerSNR / MERActive Subcarrier Number RangeUnerrored CodewordsCorrectable CodewordsUncorrectable Codewords1Locked0, 1, 2, 3159300000000 Hz2.5 dBmV42.5 dB1108 ~ 2987340723987566491508902Not Locked000 Hz1.7 dBmV0.0 dB0 ~ 4095000&lt;tabindex=-1&gt;Upstream OFDMA Channels&lt;/tabindex=-1&gt;ChannelLock StatusModulation / Profile IDChannel IDFrequencyPower1Not LockedUnknown00 Hz0 dBmV2Not LockedUnknown00 Hz0 dBmV&nbsp;&nbsp;

FURRYe38 · Answer

Power levels are all over the place.
https://kb.netgear.com/24311/Power-level-guidelines-for-a-NETGEAR-cable-modem-router?article=24311
&nbsp;
Also seeing corrected code words which should all zeros. The ISP needs to check your service line.&nbsp;
Have the ISP check the signal and line quality UP to the modem.&nbsp;Be sure the ISP provisions the modem correctly.Be sure there are no coax cable line splitters in the between the modem and ISP service box.&nbsp;Be sure your using good quality RG6 coax cable up to the modem.&nbsp;Be sure to power OFF the modem for 1 minute then back ON.https://community.netgear.com/t5/Cable-Modems-Routers/General-info-and-Troubleshooting-for-Cable-Modems/m-p/1530376#M12853https://www.duckware.com/tech/solving-intermittent-cable-modem-issues.html

Forum Discussion

Slow upload speeds on my CM1000v2

6 Replies

Procedure	Status	Comment
Acquire Downstream Channel	381000000 Hz	Locked
Connectivity State	OK	Operational
Boot State	OK	Operational
Security	Enable	BPI+
IP Provisioning Mode	Honor MDD	IPv4 only

Channel	Lock Status	Modulation	Channel ID	Frequency	Power	SNR / MER	Unerrored Codewords	Correctable Codewords	Uncorrectable Codewords
1	Locked	QAM256	37	381000000 Hz	2.7 dBmV	44.6 dB	1334438430	1	0
2	Locked	QAM256	33	357000000 Hz	2.7 dBmV	44.1 dB	1332813476	0	0
3	Locked	QAM256	34	363000000 Hz	2.7 dBmV	44.6 dB	1332820587	1	0
4	Locked	QAM256	35	369000000 Hz	2.7 dBmV	44.1 dB	1332829348	0	0
5	Locked	QAM256	36	375000000 Hz	2.8 dBmV	44.5 dB	1332855787	0	0
6	Locked	QAM256	38	387000000 Hz	2.9 dBmV	44.7 dB	1332862300	1	0
7	Locked	QAM256	39	393000000 Hz	3.1 dBmV	44.7 dB	1332868462	3	0
8	Locked	QAM256	40	399000000 Hz	3.4 dBmV	44.9 dB	1332877388	4	0
9	Locked	QAM256	41	405000000 Hz	3.8 dBmV	45.1 dB	1332882769	14	0
10	Locked	QAM256	9	729000000 Hz	0.3 dBmV	40.7 dB	1365722977	14	0
11	Locked	QAM256	10	735000000 Hz	-0.3 dBmV	41.8 dB	1365729607	16	0
12	Locked	QAM256	11	741000000 Hz	-0.1 dBmV	42.6 dB	1365733376	25	0
13	Locked	QAM256	12	747000000 Hz	-0.3 dBmV	41.0 dB	1365736479	21	0
14	Locked	QAM256	42	411000000 Hz	4.1 dBmV	44.9 dB	1332923163	4	0
15	Locked	QAM256	14	759000000 Hz	-0.7 dBmV	42.4 dB	1365744175	36	0
16	Locked	QAM256	15	765000000 Hz	-0.5 dBmV	42.5 dB	1365747951	19	0
17	Locked	QAM256	16	771000000 Hz	-1.3 dBmV	42.1 dB	1365749336	28	0
18	Locked	QAM256	17	777000000 Hz	-1.0 dBmV	42.3 dB	1365753969	34	0
19	Locked	QAM256	18	783000000 Hz	-0.7 dBmV	42.5 dB	1365757249	33	0
20	Locked	QAM256	19	789000000 Hz	-0.9 dBmV	42.5 dB	1365761720	37	0
21	Locked	QAM256	20	795000000 Hz	-0.9 dBmV	42.4 dB	1365765868	25	0
22	Locked	QAM256	22	807000000 Hz	-0.8 dBmV	42.7 dB	1365769310	16	0
23	Locked	QAM256	23	813000000 Hz	-1.6 dBmV	42.1 dB	1365773345	17	0
24	Locked	QAM256	24	819000000 Hz	-1.6 dBmV	42.1 dB	1365777183	13	0
25	Locked	QAM256	25	825000000 Hz	-2.0 dBmV	41.8 dB	1365780151	13	0
26	Locked	QAM256	26	831000000 Hz	-1.8 dBmV	42.1 dB	1365783876	17	0
27	Locked	QAM256	27	837000000 Hz	-1.7 dBmV	42.0 dB	1365789028	12	0
28	Locked	QAM256	28	843000000 Hz	-2.2 dBmV	41.8 dB	1365792260	10	0
29	Locked	QAM256	45	429000000 Hz	4.0 dBmV	45.2 dB	1333037416	3	0
30	Locked	QAM256	30	855000000 Hz	-2.5 dBmV	41.6 dB	1365798789	12	0
31	Locked	QAM256	31	861000000 Hz	-3.1 dBmV	40.8 dB	1365799426	11	0
32	Locked	QAM256	32	867000000 Hz	-2.9 dBmV	41.3 dB	1365800819	3	0

Channel	Lock Status	Modulation / Profile ID	Channel ID	Frequency	Power	SNR / MER	Active Subcarrier Number Range	Unerrored Codewords	Correctable Codewords	Uncorrectable Codewords
1	Locked	0, 1, 2, 3	159	300000000 Hz	2.5 dBmV	42.5 dB	1108 ~ 2987	3407239875	664915089	0
2	Not Locked	0	0	0 Hz	1.7 dBmV	0.0 dB	0 ~ 4095	0	0	0

Channel	Lock Status	Modulation	Channel ID	Frequency	Power
1	Locked	ATDMA	1	36800000 Hz	42.8 dBmV
2	Locked	ATDMA	2	30400000 Hz	42.8 dBmV
3	Locked	ATDMA	3	24000000 Hz	43.3 dBmV
4	Locked	ATDMA	4	17600000 Hz	43.5 dBmV
5	Locked	ATDMA	5	60000000 Hz	36.0 dBmV
6	Locked	ATDMA	6	67000000 Hz	37.5 dBmV
7	Locked	ATDMA	7	74000000 Hz	39.8 dBmV
8	Locked	ATDMA	8	81000000 Hz	35.3 dBmV