Browser speed test is faster than internal CAX30.

[doug760]

Hi,

 I just connected the CAX30 and the browser speed test shows a D/L of 933Mbps. The internal D/L speed test is around 340Mbps. The upload speeds match. Everything is fine on spectrums end. Netgear just stated that power levels are an issue but spectrum says that they are fine on their end. 

The latest FW was installed prior to setup.

Cable connection status shows as POOR.

After running the diagnostic:

Cable Diagnostic
Status: Poor
Action: [Downstream Power Level] Try these actions (Click the Refresh button after each step): 1) Make sure the coaxial cable is tightly connected. 2) Remove any unnecessary splitters. 3) Replace any required splitters. 4) Contact your service provider for troubleshooting help.
Internet Access:
Downstream Status:	Downstream Power Level:	Downstream power is poor (11.0 dBmV). The recommended level is between -10dBmV to 10dBmV.	Downstream SNR:
Upstream Status:

Thanks

[FURRYe38 · Accepted solution]

Power levels are a bit too high:

https://kb.netgear.com/24311/Power-level-guidelines-for-a-NETGEAR-cable-modem-router

The Warning seems to indicate something with the power that the ISP should take a look at. Any Criticals, Errors or Warnings seen in the event logs needs to be reviewed and resolved by the ISP. Indicates a signal issue on the ISP line up to the modem.

Also the internal speed test maybe picking a speed test server that is busier or not as accurate as other speed test services located near you. Ya I wish we could pick the servers with in the modem. 

As long as your getting to spec speeds from a wired PC thru the modem, you'll be fine. 

[FURRYe38]

What Firmware version is currently loaded?
Please post a copy and paste of the modems connection status and event log page.
https://kb.netgear.com/30007/How-do-I-obtain-the-cable-connection-information-from-a-NETGEAR-cable-m...
https://kb.netgear.com/30008/How-do-I-view-or-clear-the-event-logs-on-my-NETGEAR-cable-modem-or-mode...

[doug760]

Hi,

 The latest FW version (V2.2.2.2) has been installed. 

Below is both the cable diagnostic and event logs.

Cable Diagnostic
Startup Procedure
CM status: OPERATIONAL
DownstreamChannel: 663000000Hz Locked
ConnectivityState: OK operational(12),
BootState: OK Operational
Security: Enabled
IPProvisioningMode: 12 IPv4Only

Downstream Bonded Channels
Channel LockedStatus Modulation Channel ID Frequency Power SNR Correctables Uncorrectables
1 Locked 256 QAM 32 663000000 Hz 10.6 dBmV 40.9 dB 0 0
2 Locked 256 QAM 1 483000000 Hz 8.5 dBmV 40.7 dB 9 0
3 Locked 256 QAM 2 489000000 Hz 8.5 dBmV 40.8 dB 14 0
4 Locked 256 QAM 3 495000000 Hz 8.4 dBmV 40.8 dB 22 10
5 Locked 256 QAM 4 501000000 Hz 8.6 dBmV 40.8 dB 12 0
6 Locked 256 QAM 5 507000000 Hz 8.8 dBmV 40.7 dB 0 0
7 Locked 256 QAM 6 513000000 Hz 8.9 dBmV 40.7 dB 29 0
8 Locked 256 QAM 7 519000000 Hz 9.2 dBmV 40.9 dB 0 0
9 Locked 256 QAM 8 525000000 Hz 9.4 dBmV 40.9 dB 29 0
10 Locked 256 QAM 9 531000000 Hz 9.8 dBmV 41.1 dB 25 6
11 Locked 256 QAM 10 537000000 Hz 10.0 dBmV 41.1 dB 29 0
12 Locked 256 QAM 11 543000000 Hz 10.1 dBmV 41.1 dB 0 0
13 Locked 256 QAM 12 549000000 Hz 10.2 dBmV 41.1 dB 0 0
14 Locked 256 QAM 13 555000000 Hz 10.1 dBmV 41.1 dB 4 0
15 Locked 256 QAM 14 561000000 Hz 10.1 dBmV 41.1 dB 7 28
16 Locked 256 QAM 15 567000000 Hz 10.0 dBmV 41.2 dB 0 0
17 Locked 256 QAM 16 573000000 Hz 10.1 dBmV 41.1 dB 4 0
18 Locked 256 QAM 17 579000000 Hz 10.3 dBmV 41.2 dB 28 4
19 Locked 256 QAM 18 585000000 Hz 10.3 dBmV 41.2 dB 33 0
20 Locked 256 QAM 19 591000000 Hz 10.3 dBmV 41.2 dB 0 0
21 Locked 256 QAM 20 597000000 Hz 10.5 dBmV 41.2 dB 24 0
22 Locked 256 QAM 21 603000000 Hz 10.6 dBmV 41.1 dB 0 0
23 Locked 256 QAM 22 609000000 Hz 10.5 dBmV 41.1 dB 0 0
24 Locked 256 QAM 23 615000000 Hz 10.7 dBmV 41.2 dB 0 0
25 Locked 256 QAM 24 621000000 Hz 10.8 dBmV 41.1 dB 0 0
26 Locked 256 QAM 26 627000000 Hz 10.9 dBmV 41.1 dB 0 0
27 Locked 256 QAM 27 633000000 Hz 10.9 dBmV 41.2 dB 40 0
28 Locked 256 QAM 28 639000000 Hz 10.9 dBmV 41.2 dB 0 0
29 Locked 256 QAM 29 645000000 Hz 11.0 dBmV 41.1 dB 32 0
30 Locked 256 QAM 30 651000000 Hz 10.7 dBmV 41.0 dB 22 0
31 Locked 256 QAM 31 657000000 Hz 10.6 dBmV 41.2 dB 24 0
33 Not Locked Unknown 0 0 Hz 0.0 dBmV 0.0 dB 0 0

Upstream Bonded Channels
Channel LockedStatus ChannelType Channel ID SymbolRate Frequency Power
1 Locked ATDMA 3 5120 Ksym/sec 30400000 Hz 37.8 dBmV
2 Locked ATDMA 4 5120 Ksym/sec 36800000 Hz 37.8 dBmV
3 Not Locked Unknown 0 0 Ksym/sec 0 Hz 0 dBmV
4 Not Locked Unknown 0 0 Ksym/sec 0 Hz 0 dBmV
5 Not Locked Unknown 0 0 Ksym/sec 0 Hz 0 dBmV
6 Not Locked Unknown 0 0 Ksym/sec 0 Hz 0 dBmV
7 Not Locked Unknown 0 0 Ksym/sec 0 Hz 0 dBmV
8 Not Locked Unknown 0 0 Ksym/sec 0 Hz 0 dBmV

Downstream OFDM Channels
Channel Channel ID Frequency Power SNR/MER ActiveSubcarrier Correctable Uncorrectable
1 25 680000000 Hz 11.2 dBmV 41.5 dB 1108 ~ 2987 799908429 0
2 0 0 Hz 0 dBmV 0 dB 0 ~ 0 0 0

Upstream OFDMA Channels
Channel UpstreamMuted RangingStatus Subc Zero Freq ActiveSubcarrier SymbolsPerFrame Power
2 False Success 6.0 MHz 74 ~ 413 16 35 dBmV
2 n/a Other 0 MHz 0 ~ 0 0 0 dBmV

********************************************* EVENT LOG ***************************************************************************************************
Time Priority Description
2024-04-22 11:14:15 Notice (6) US profile assignment change. US Chan ID: 8; Previous Profile: 12 13; New Profile: 11 13.;CM-MAC=54:07:7d:41:f8:2b;CMTS-MAC=00:01:5c:a7:ae:5e;CM-QOS=1.1;CM-VER=3.1;
2024-04-22 11:04:12 Notice (6) US profile assignment change. US Chan ID: 8; Previous Profile: 11 13; New Profile: 12 13.;CM-MAC=54:07:7d:41:f8:2b;CMTS-MAC=00:01:5c:a7:ae:5e;CM-QOS=1.1;CM-VER=3.1;
2024-04-22 09:14:09 Notice (6) US profile assignment change. US Chan ID: 8; Previous Profile: 12 13; New Profile: 11 13.;CM-MAC=54:07:7d:41:f8:2b;CMTS-MAC=00:01:5c:a7:ae:5e;CM-QOS=1.1;CM-VER=3.1;
2024-04-22 09:04:06 Notice (6) US profile assignment change. US Chan ID: 8; Previous Profile: 11 13; New Profile: 12 13.;CM-MAC=54:07:7d:41:f8:2b;CMTS-MAC=00:01:5c:a7:ae:5e;CM-QOS=1.1;CM-VER=3.1;
2024-04-22 08:23:05 Notice (6) US profile assignment change. US Chan ID: 8; Previous Profile: 12 13; New Profile: 11 13.;CM-MAC=54:07:7d:41:f8:2b;CMTS-MAC=00:01:5c:a7:ae:5e;CM-QOS=1.1;CM-VER=3.1;
2024-04-22 08:13:02 Notice (6) US profile assignment change. US Chan ID: 8; Previous Profile: 11 13; New Profile: 12 13.;CM-MAC=54:07:7d:41:f8:2b;CMTS-MAC=00:01:5c:a7:ae:5e;CM-QOS=1.1;CM-VER=3.1;
2024-04-21 22:31:10 Notice (6) US profile assignment change. US Chan ID: 8; Previous Profile: 12 13; New Profile: 11 13.;CM-MAC=54:07:7d:41:f8:2b;CMTS-MAC=00:01:5c:a7:ae:5e;CM-QOS=1.1;CM-VER=3.1;
2024-04-21 21:58:13 Notice (6) US profile assignment change. US Chan ID: 8; Previous Profile: 11 13; New Profile: 12 13.;CM-MAC=54:07:7d:41:f8:2b;CMTS-MAC=00:01:5c:a7:ae:5e;CM-QOS=1.1;CM-VER=3.1;
2024-04-21 21:38:08 Notice (6) US profile assignment change. US Chan ID: 8; Previous Profile: 12 13; New Profile: 11 13.;CM-MAC=54:07:7d:41:f8:2b;CMTS-MAC=00:01:5c:a7:ae:5e;CM-QOS=1.1;CM-VER=3.1;
2024-04-21 21:28:05 Notice (6) US profile assignment change. US Chan ID: 8; Previous Profile: 11 13; New Profile: 12 13.;CM-MAC=54:07:7d:41:f8:2b;CMTS-MAC=00:01:5c:a7:ae:5e;CM-QOS=1.1;CM-VER=3.1;
2024-04-21 21:15:13 Notice (6) CM-STATUS message sent. Event Type Code: 24; Chan ID: 25; DSID: N/A; MAC Addr: N/A; OFDM/OFDMA Profile ID: 2.;CM-MAC=54:07:7d:41:f8:2b;CMTS-MAC=00:01:5c:a7:ae:5e;CM-QOS=1.1;CM-VER=3.1;
2024-04-21 21:14:22 Notice (6) CM-STATUS message sent. Event Type Code: 16; Chan ID: 25; DSID: N/A; MAC Addr: N/A; OFDM/OFDMA Profile ID: 2.;CM-MAC=54:07:7d:41:f8:2b;CMTS-MAC=00:01:5c:a7:ae:5e;CM-QOS=1.1;CM-VER=3.1;
2024-04-21 21:07:36 Notice (6) US profile assignment change. US Chan ID: 8; Previous Profile: 12 13; New Profile: 11 13.;CM-MAC=54:07:7d:41:f8:2b;CMTS-MAC=00:01:5c:a7:ae:5e;CM-QOS=1.1;CM-VER=3.1;
2024-04-21 20:32:45 Notice (6) US profile assignment change. US Chan ID: 8; Previous Profile: 11 13; New Profile: 12 13.;CM-MAC=54:07:7d:41:f8:2b;CMTS-MAC=00:01:5c:a7:ae:5e;CM-QOS=1.1;CM-VER=3.1;
2024-04-21 19:02:52 Notice (6) US profile assignment change. US Chan ID: 8; Previous Profile: 12 13; New Profile: 11 13.;CM-MAC=54:07:7d:41:f8:2b;CMTS-MAC=00:01:5c:a7:ae:5e;CM-QOS=1.1;CM-VER=3.1;
2024-04-21 18:52:43 Notice (6) US profile assignment change. US Chan ID: 8; Previous Profile: 11 13; New Profile: 12 13.;CM-MAC=54:07:7d:41:f8:2b;CMTS-MAC=00:01:5c:a7:ae:5e;CM-QOS=1.1;CM-VER=3.1;
2024-04-21 00:19:08 Notice (6) US profile assignment change. US Chan ID: 8; Previous Profile: 12 13; New Profile: 11 13.;CM-MAC=54:07:7d:41:f8:2b;CMTS-MAC=00:01:5c:a7:ae:5e;CM-QOS=1.1;CM-VER=3.1;
2024-04-21 00:09:05 Notice (6) US profile assignment change. US Chan ID: 8; Previous Profile: 11 13; New Profile: 12 13.;CM-MAC=54:07:7d:41:f8:2b;CMTS-MAC=00:01:5c:a7:ae:5e;CM-QOS=1.1;CM-VER=3.1;
2024-04-20 22:25:11 Notice (6) US profile assignment change. US Chan ID: 8; Previous Profile: 12 13; New Profile: 11 13.;CM-MAC=54:07:7d:41:f8:2b;CMTS-MAC=00:01:5c:a7:ae:5e;CM-QOS=1.1;CM-VER=3.1;
2024-04-20 22:15:08 Notice (6) US profile assignment change. US Chan ID: 8; Previous Profile: 11 13; New Profile: 12 13.;CM-MAC=54:07:7d:41:f8:2b;CMTS-MAC=00:01:5c:a7:ae:5e;CM-QOS=1.1;CM-VER=3.1;
2024-04-20 21:43:15 Notice (6) US profile assignment change. US Chan ID: 8; Previous Profile: 12 13; New Profile: 11 13.;CM-MAC=54:07:7d:41:f8:2b;CMTS-MAC=00:01:5c:a7:ae:5e;CM-QOS=1.1;CM-VER=3.1;
2024-04-20 21:33:12 Notice (6) US profile assignment change. US Chan ID: 8; Previous Profile: 11 13; New Profile: 12 13.;CM-MAC=54:07:7d:41:f8:2b;CMTS-MAC=00:01:5c:a7:ae:5e;CM-QOS=1.1;CM-VER=3.1;
2024-04-20 21:31:47 Notice (6) US profile assignment change. US Chan ID: 8; Previous Profile: 12 13; New Profile: 11 13.;CM-MAC=54:07:7d:41:f8:2b;CMTS-MAC=00:01:5c:a7:ae:5e;CM-QOS=1.1;CM-VER=3.1;
2024-04-20 21:21:43 Notice (6) US profile assignment change. US Chan ID: 8; Previous Profile: 11 13; New Profile: 12 13.;CM-MAC=54:07:7d:41:f8:2b;CMTS-MAC=00:01:5c:a7:ae:5e;CM-QOS=1.1;CM-VER=3.1;
2024-04-20 21:16:18 Notice (6) US profile assignment change. US Chan ID: 8; Previous Profile: 12 13; New Profile: 11 13.;CM-MAC=54:07:7d:41:f8:2b;CMTS-MAC=00:01:5c:a7:ae:5e;CM-QOS=1.1;CM-VER=3.1;
2024-04-20 21:06:15 Notice (6) US profile assignment change. US Chan ID: 8; Previous Profile: 11 13; New Profile: 12 13.;CM-MAC=54:07:7d:41:f8:2b;CMTS-MAC=00:01:5c:a7:ae:5e;CM-QOS=1.1;CM-VER=3.1;
2024-04-20 20:37:30 Notice (6) US profile assignment change. US Chan ID: 8; Previous Profile: 12 13; New Profile: 11 13.;CM-MAC=54:07:7d:41:f8:2b;CMTS-MAC=00:01:5c:a7:ae:5e;CM-QOS=1.1;CM-VER=3.1;
2024-04-20 20:27:27 Notice (6) US profile assignment change. US Chan ID: 8; Previous Profile: 11 13; New Profile: 12 13.;CM-MAC=54:07:7d:41:f8:2b;CMTS-MAC=00:01:5c:a7:ae:5e;CM-QOS=1.1;CM-VER=3.1;
2024-04-20 19:37:08 Notice (6) US profile assignment change. US Chan ID: 8; Previous Profile: 12 13; New Profile: 11 13.;CM-MAC=54:07:7d:41:f8:2b;CMTS-MAC=00:01:5c:a7:ae:5e;CM-QOS=1.1;CM-VER=3.1;
2024-04-20 19:27:05 Notice (6) US profile assignment change. US Chan ID: 8; Previous Profile: 11 13; New Profile: 12 13.;CM-MAC=54:07:7d:41:f8:2b;CMTS-MAC=00:01:5c:a7:ae:5e;CM-QOS=1.1;CM-VER=3.1;
2024-04-20 18:12:05 Notice (6) US profile assignment change. US Chan ID: 8; Previous Profile: 12 13; New Profile: 11 13.;CM-MAC=54:07:7d:41:f8:2b;CMTS-MAC=00:01:5c:a7:ae:5e;CM-QOS=1.1;CM-VER=3.1;
2024-04-20 17:49:36 Notice (6) US profile assignment change. US Chan ID: 8; Previous Profile: 11 13; New Profile: 12 13.;CM-MAC=54:07:7d:41:f8:2b;CMTS-MAC=00:01:5c:a7:ae:5e;CM-QOS=1.1;CM-VER=3.1;
2024-04-20 17:37:28 Notice (6) US profile assignment change. US Chan ID: 8; Previous Profile: 12 13; New Profile: 11 13.;CM-MAC=54:07:7d:41:f8:2b;CMTS-MAC=00:01:5c:a7:ae:5e;CM-QOS=1.1;CM-VER=3.1;
2024-04-20 17:27:25 Notice (6) US profile assignment change. US Chan ID: 8; Previous Profile: 11 13; New Profile: 12 13.;CM-MAC=54:07:7d:41:f8:2b;CMTS-MAC=00:01:5c:a7:ae:5e;CM-QOS=1.1;CM-VER=3.1;
2024-04-20 17:17:35 Notice (6) US profile assignment change. US Chan ID: 8; Previous Profile: 12 13; New Profile: 11 13.;CM-MAC=54:07:7d:41:f8:2b;CMTS-MAC=00:01:5c:a7:ae:5e;CM-QOS=1.1;CM-VER=3.1;
2024-04-20 17:07:32 Notice (6) US profile assignment change. US Chan ID: 8; Previous Profile: 11 13; New Profile: 12 13.;CM-MAC=54:07:7d:41:f8:2b;CMTS-MAC=00:01:5c:a7:ae:5e;CM-QOS=1.1;CM-VER=3.1;
2024-04-20 13:14:17 Notice (6) US profile assignment change. US Chan ID: 8; Previous Profile: 12 13; New Profile: 11 13.;CM-MAC=54:07:7d:41:f8:2b;CMTS-MAC=00:01:5c:a7:ae:5e;CM-QOS=1.1;CM-VER=3.1;
2024-04-20 13:04:14 Notice (6) US profile assignment change. US Chan ID: 8; Previous Profile: 11 13; New Profile: 12 13.;CM-MAC=54:07:7d:41:f8:2b;CMTS-MAC=00:01:5c:a7:ae:5e;CM-QOS=1.1;CM-VER=3.1;
2024-04-19 17:16:37 Warning (5) RNG-RSP CCAP Commanded Power in Excess of 6 dB Below the Value Corresponding to the Top of the DRW;CM-MAC=54:07:7d:41:f8:2b;CMTS-MAC=00:01:5c:a7:ae:5e;CM-QOS=1.1;CM-VER=3.1;
2024-04-19 14:30:39 Notice (6) US profile assignment change. US Chan ID: 8; Previous Profile: 13; New Profile: 11 13.;CM-MAC=54:07:7d:41:f8:2b;CMTS-MAC=00:01:5c:a7:ae:5e;CM-QOS=1.1;CM-VER=3.1;

[FURRYe38 · Accepted solution]

Power levels are a bit too high:

https://kb.netgear.com/24311/Power-level-guidelines-for-a-NETGEAR-cable-modem-router

The Warning seems to indicate something with the power that the ISP should take a look at. Any Criticals, Errors or Warnings seen in the event logs needs to be reviewed and resolved by the ISP. Indicates a signal issue on the ISP line up to the modem.

Also the internal speed test maybe picking a speed test server that is busier or not as accurate as other speed test services located near you. Ya I wish we could pick the servers with in the modem. 

As long as your getting to spec speeds from a wired PC thru the modem, you'll be fine. 

[doug760]

Hi,

 Yes, I showed the power level to the ISP and all they told me was that everything is within proper tolerances on their end. Thank you for the help. It is much appreciated.

[FURRYe38]

I might install a -3 or -6Dbm coax line attenuator to bring the power down just a bit. Just don't want your modem to burn out. 

Good Luck.

[doug760]

Hi again,

 Would the cable status change from poor to good then or is that related to some other issue?

Thanks....

[FURRYe38]

Possible. Other factors on the line can contribute to a Poor signal status.

I see some Correctables  and Un-Correctables that should be zero as well, So the modem is attempting to use a possible bad signal on the line, making corrections where it can and where it can't with Un-Correctables. 

Most of that would need to be checked by the ISP. 

Have the ISP check the signal and line quality UP to the modem. 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. 
Be sure your using good quality RG6 coax cable up to the modem. 
Start with removing any amplifiers, signal attenuators, or splitters from the coax.
From there check the line for kinks, damage, moisture in the line.
Check the connectors for improperly made ends, foil touching the copper coax line, loose connections, bad/old/cheap connectors, or corroded connections. Replace them if you do.
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-Mod...
https://kb.netgear.com/24311/Power-level-guidelines-for-a-NETGEAR-cable-modem-router
https://www.duckware.com/tech/solving-intermittent-cable-modem-issues.html
https://highspeed.tips/docsis-events/

[doug760]

Ok... Thank you for the information!

"Be sure your using good quality RG6 coax cable up to the modem."

I plan on replacing mine as it is a bit old. I will contact them again.... I guess that they will send someone out to run tests.

[FURRYe38]

👍