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Xfinity AX6000 Gigabyte internet
I recently bought the AX6000 hooked it up update to latest firmware and ran a speed test. Was only getting 340-400 mbps out of the 1200 mbps. Also did the speed test on the Netgear app and only getting 450 mbps. Any suggestions?
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Is this wired speed tests with a wired PC?
You should see 1.2Gb with a wired PC on the MultiGig port in back with a multigig ethernet adatper supported PC.
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-modem-modem-router
https://kb.netgear.com/30008/How-do-I-view-or-clear-the-event-logs-on-my-NETGEAR-cable-modem-or-modem-routerCable Diagnostic
Status: Good
Action: Your setup looks fine.
Internet Access: Good
Downstream Status: Good
Downstream Power Level: Good
Downstream SNR: Good
Upstream Status: Good
Upstream Power Level: Good
Current time: Mon May 13 07:23:09 2024Startup Procedure
Acquire Downstream Channel: 525 MHz Locked
Connectivity State: OK Operational
Boot State: OK Operational
Security: Enabled BPI+
Downstream Bonded Channels
Channel LockedStatus Modulation ChannelID Frequency Power SNR Correctables Uncorrectables
1 Locked 256 QAM 29 525000000 Hz 3.1 dBmV 40.5 dB 0 0
2 Locked 256 QAM 1 345000000 Hz 2.6 dBmV 40.9 dB 0 0
3 Locked 256 QAM 2 351000000 Hz 2.6 dBmV 41 dB 0 0
4 Locked 256 QAM 3 363000000 Hz 2.1 dBmV 40.8 dB 0 0
5 Locked 256 QAM 4 369000000 Hz 2.4 dBmV 40.8 dB 0 0
6 Locked 256 QAM 5 375000000 Hz 2.6 dBmV 40.8 dB 0 0
7 Locked 256 QAM 6 381000000 Hz 3.1 dBmV 40.9 dB 0 0
8 Locked 256 QAM 7 387000000 Hz 3.2 dBmV 40.9 dB 0 0
9 Locked 256 QAM 8 393000000 Hz 3.4 dBmV 40.9 dB 0 0
10 Locked 256 QAM 9 399000000 Hz 3.6 dBmV 40.9 dB 0 0
11 Locked 256 QAM 10 405000000 Hz 3.7 dBmV 40.9 dB 0 0
12 Locked 256 QAM 11 411000000 Hz 4 dBmV 41 dB 0 0
13 Locked 256 QAM 12 417000000 Hz 4 dBmV 41 dB 0 0
14 Locked 256 QAM 13 423000000 Hz 4.1 dBmV 41 dB 0 0
15 Locked 256 QAM 14 429000000 Hz 4.3 dBmV 41.1 dB 0 0
16 Locked 256 QAM 15 435000000 Hz 4.3 dBmV 41.1 dB 0 0
17 Locked 256 QAM 16 441000000 Hz 4.2 dBmV 41.1 dB 0 0
18 Locked 256 QAM 17 447000000 Hz 4.2 dBmV 41.1 dB 0 0
19 Locked 256 QAM 18 453000000 Hz 4.2 dBmV 41 dB 0 0
20 Locked 256 QAM 19 459000000 Hz 4.2 dBmV 41 dB 0 0
21 Locked 256 QAM 20 465000000 Hz 4.2 dBmV 41 dB 0 0
22 Locked 256 QAM 21 471000000 Hz 4.2 dBmV 41 dB 0 0
23 Locked 256 QAM 22 477000000 Hz 4.1 dBmV 40.9 dB 0 0
24 Locked 256 QAM 23 483000000 Hz 4.2 dBmV 41 dB 0 0
25 Locked 256 QAM 24 489000000 Hz 4 dBmV 40.9 dB 0 0
26 Locked 256 QAM 25 495000000 Hz 4 dBmV 40.8 dB 0 0
27 Locked 256 QAM 26 507000000 Hz 3.8 dBmV 40.7 dB 0 0
28 Locked 256 QAM 27 513000000 Hz 3.5 dBmV 40.6 dB 0 0
29 Locked 256 QAM 28 519000000 Hz 3.3 dBmV 40.6 dB 0 0
30 Locked 256 QAM 30 531000000 Hz 2.7 dBmV 40.3 dB 0 0
31 Locked 256 QAM 31 537000000 Hz 2.7 dBmV 40.3 dB 0 0
32 Locked 256 QAM 32 543000000 Hz 2.4 dBmV 40.2 dB 0 0
Upstream Bonded Channels
Channel LockedStatus ChannelType ChannelID SymbolRate Frequency Power
1 Locked ATDMA 3 5120 Ksym/sec 22800000 Hz 40.5 dBmV
2 Locked ATDMA 2 5120 Ksym/sec 16400000 Hz 41.0 dBmV
3 Locked ATDMA 4 5120 Ksym/sec 29200000 Hz 40.5 dBmV
4 Locked ATDMA 5 5120 Ksym/sec 35600000 Hz 40.0 dBmV
5 Locked ATDMA 6 2560 Ksym/sec 40400000 Hz 42.5 dBmV
6 Not Locked Unknown 0 0 0 0.0
7 Not Locked Unknown 0 0 0 0.0
8 Not Locked Unknown 0 0 0 0.0
Downstream OFDM Channels
Channel LockedStatus ProfileID ChannelID Frequency Power SNR/MER ActiveSubcarrier Unerror Correctable Uncorrectable
1 Locked 0 ,1 ,2 ,3 159 564000000 Hz 3.28 dBmV 40.5 dB 1126 ~ 2969 1258904857 95968797 0
2 Not Locked 0 0 0 Hz 0 dBmV 0 dB 0 ~ 4095 0 0 0
Upstream OFDMA Channels
Channel LockedStatus ProfileID ChannelID Frequency Power
1 Not Locked 0 0 0 Hz 0 dBmV
2 Not Locked 0 0 0 Hz 0 dBmV
Event Log
Time Priority Description
Sun May 12 21:21:02 2024 Warning Dynamic Range Window violation
Sun May 12 21:21:02 2024 Warning RNG-RSP CCAP Commanded Power Exceeds Value Corresponding to the Top of the DRW;CM-MAC=e0:46:ee:8d:8a:83;CMTS-MAC=70:1f:53:99:41:cb;CM-QOS=1.1;CM-VER=3.1;
Sun May 12 21:20:57 2024 Notice DS profile assignment change. DS Chan ID: 32; Previous Profile: ; New Profile: 1 2 3.;CM-MAC=e0:46:ee:8d:8a:83;CMTS-MAC=70:1f:53:99:41:cb;CM-QOS=1.1;CM-VER=3.1;
Sun May 12 21:20:37 2024 Notice TLV-11 - unrecognized OID;CM-MAC=e0:46:ee:8d:8a:83;CMTS-MAC=70:1f:53:99:41:cb;CM-QOS=1.1;CM-VER=3.1;
Thu Jan 1 00:00:55 1970 Notice Honoring MDD; IP provisioning mode = IPv6
Thu Jan 1 00:00:43 1970 Critical SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;;CM-MAC=e0:46:ee:8d:8a:83;CMTS-MAC=00:00:00:00:00:00;CM-QOS=1.1;CM-VER=3.1;
Sat May 11 00:06:45 2024 Critical Resetting the cable modem due to docsDevResetNow
Thu Jan 1 00:00:43 1970 Critical SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;;CM-MAC=e0:46:ee:8d:8a:83;CMTS-MAC=00:00:00:00:00:00;CM-QOS=1.1;CM-VER=3.1;
Thu Jan 1 00:03:07 1970 Critical No Ranging Response received - T3 time-out;CM-MAC=e0:46:ee:8d:8a:83;CMTS-MAC=70:1f:53:99:41:cb;CM-QOS=1.1;CM-VER=3.1;
Thu Jan 1 00:02:39 1970 Critical SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;;CM-MAC=e0:46:ee:8d:8a:83;CMTS-MAC=00:00:00:00:00:00;CM-QOS=1.1;CM-VER=3.1;
Thu Jan 1 00:00:55 1970 Critical SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;;CM-MAC=e0:46:ee:8d:8a:83;CMTS-MAC=00:00:00:00:00:00;CM-QOS=1.1;CM-VER=3.1;Sun May 12 21:21:02 2024 Warning (5) Dynamic Range Window violation Sun May 12 21:21:02 2024 Warning (5) RNG-RSP CCAP Commanded Power Exceeds Value Corresponding to the Top of the DRW;CM-MAC=e0:46:ee:8d:8a:83;CMTS-MAC=70:1f:53:99:41:cb;CM-QOS=1.1;CM-VER=3.1; Sun May 12 21:20:57 2024 Notice (6) DS profile assignment change. DS Chan ID: 32; Previous Profile: ; New Profile: 1 2 3.;CM-MAC=e0:46:ee:8d:8a:83;CMTS-MAC=70:1f:53:99:41:cb;CM-QOS=1.1;CM-VER=3.1; Sun May 12 21:20:37 2024 Notice (6) TLV-11 - unrecognized OID;CM-MAC=e0:46:ee:8d:8a:83;CMTS-MAC=70:1f:53:99:41:cb;CM-QOS=1.1;CM-VER=3.1; Thu Jan 1 00:00:55 1970 Notice (6) Honoring MDD; IP provisioning mode = IPv6 Thu Jan 1 00:00:43 1970 Critical (3) SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;;CM-MAC=e0:46:ee:8d:8a:83;CMTS-MAC=00:00:00:00:00:00;CM-QOS=1.1;CM-VER=3.1; Sat May 11 00:06:45 2024 Critical (3) Resetting the cable modem due to docsDevResetNow Thu Jan 1 00:00:43 1970 Critical (3) SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;;CM-MAC=e0:46:ee:8d:8a:83;CMTS-MAC=00:00:00:00:00:00;CM-QOS=1.1;CM-VER=3.1; Thu Jan 1 00:03:07 1970 Critical (3) No Ranging Response received - T3 time-out;CM-MAC=e0:46:ee:8d:8a:83;CMTS-MAC=70:1f:53:99:41:cb;CM-QOS=1.1;CM-VER=3.1; Thu Jan 1 00:02:39 1970 Critical (3) SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;;CM-MAC=e0:46:ee:8d:8a:83;CMTS-MAC=00:00:00:00:00:00;CM-QOS=1.1;CM-VER=3.1; Thu Jan 1 00:00:55 1970 Critical (3) SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;;CM-MAC=e0:46:ee:8d:8a:83;CMTS-MAC=00:00:00:00:00:00;CM-QOS=1.1;CM-VER=3.1; Power levels and correctables and un-correctables are good.
However there are some criticals and warnings in the event logs that the ISP needs to resolve. 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.
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-Modems/m-p/1530376#M12853
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/- It’s weird tho it shows criticals from Jan 1st I literally just bought the router may 10th 2024
