CAX80 not getting full speed

[carson_adkins]

also wifi 6 ofdma works fine on my wifi 6 modem router from xfinity so it works. i went through 3 levels of tech support from netgear so they know its a problem with their firmware on wifi 6 mixed with comcast they are getting a firmware person to look into it and fix it.  also my firmware is V1.1.0.41 and the cable firmware is V1.02.08.

[ScoobyAgain]

Hey All,

Please note when I was using C6300 modem/router I had 100 MBbps plan from xfinity; I was getting 110 Mbps down/5 Mbps up.  That tells me its not issue with Xfinity end; problem must be with CAX80's firmware or bootfile cannot handle the Gig speed specs as Xfinity level 2 support suggested ...  but I will let experts conclude on this ...

Note: I was on hold for Netgear level 2 today for a little over 2 hours while watching Cheech and Chong's "Up in Smoke " movie.  Since no one picked up, after that to release my frustration I went out to mow the lawn after a glass of wine (ok, half a bottle) 🙂

Hope ya'll having a great sunday but here is my data, let me know if I can provide anything else.

Firmware Version V1.1.0.41 

Starting Frequency

Startup Procedure

Procedure	Status	Comment
Acquire Downstream Channel	483 MHz	Locked
Connectivity State	OK	Operational
Boot State	OK	Operational
Security	Enabled	BPI+

Downstream Bonded Channels

Channel	Lock Status	Modulation	Channel ID	Frequency	Power	SNR	Correctables	Uncorrectables
1	Locked	256 QAM	20	483000000 Hz	-1.0 dBmV	40.4 dB	0	0
2	Locked	256 QAM	12	435000000 Hz	-0.7 dBmV	40.4 dB	0	0
3	Locked	256 QAM	13	441000000 Hz	-0.7 dBmV	40.4 dB	0	0
4	Locked	256 QAM	14	447000000 Hz	-0.6 dBmV	40.5 dB	0	0
5	Locked	256 QAM	15	453000000 Hz	-0.6 dBmV	40.5 dB	0	0
6	Locked	256 QAM	16	459000000 Hz	-0.8 dBmV	40.5 dB	0	0
7	Locked	256 QAM	17	465000000 Hz	-0.7 dBmV	40.5 dB	0	0
8	Locked	256 QAM	18	471000000 Hz	-0.6 dBmV	40.5 dB	0	0
9	Locked	256 QAM	19	477000000 Hz	-0.9 dBmV	40.4 dB	0	0
10	Locked	256 QAM	21	489000000 Hz	-0.9 dBmV	40.4 dB	0	0
11	Locked	256 QAM	22	495000000 Hz	-0.7 dBmV	40.3 dB	0	0
12	Locked	256 QAM	23	507000000 Hz	-0.8 dBmV	31.7 dB	152	0
13	Locked	256 QAM	24	513000000 Hz	-0.6 dBmV	34.6 dB	0	0
14	Locked	256 QAM	25	519000000 Hz	-0.2 dBmV	37.9 dB	0	0
15	Locked	256 QAM	26	525000000 Hz	-0.6 dBmV	38.4 dB	0	0
16	Locked	256 QAM	27	531000000 Hz	-0.5 dBmV	40.1 dB	0	0
17	Locked	256 QAM	28	543000000 Hz	-0.2 dBmV	40.5 dB	0	0
18	Locked	256 QAM	29	549000000 Hz	-0.6 dBmV	40.5 dB	0	0
19	Locked	256 QAM	30	555000000 Hz	-0.4 dBmV	40.6 dB	0	0
20	Locked	256 QAM	31	561000000 Hz	-0.2 dBmV	40.6 dB	0	0
21	Locked	256 QAM	32	567000000 Hz	-0.3 dBmV	40.5 dB	0	0
22	Locked	256 QAM	33	573000000 Hz	-0.4 dBmV	40.5 dB	0	0
23	Locked	256 QAM	34	579000000 Hz	-0.4 dBmV	40.6 dB	0	0
24	Locked	256 QAM	35	585000000 Hz	-0.3 dBmV	40.5 dB	0	0
25	Locked	256 QAM	36	591000000 Hz	-0.1 dBmV	40.7 dB	0	0
26	Locked	256 QAM	37	597000000 Hz	-0.4 dBmV	39.7 dB	0	0
27	Locked	256 QAM	38	603000000 Hz	-0.5 dBmV	39.0 dB	0	0
28	Locked	256 QAM	39	609000000 Hz	-0.4 dBmV	39.7 dB	0	0
29	Locked	256 QAM	40	615000000 Hz	-0.1 dBmV	40.4 dB	0	0
30	Locked	256 QAM	41	621000000 Hz	-0.2 dBmV	40.4 dB	0	0
31	Locked	256 QAM	42	627000000 Hz	-0.4 dBmV	40.4 dB	0	0
32	Locked	256 QAM	43	633000000 Hz	-0.6 dBmV	40.4 dB	0	0

Upstream Bonded Channels

Channel	Lock Status	US Channel Type	Channel ID	Symbol Rate	Frequency	Power
1	Locked	ATDMA	72	5120 Ksym/sec	36700000 Hz	43.0 dBmV
2	Locked	ATDMA	69	5120 Ksym/sec	17300000 Hz	42.0 dBmV
3	Locked	ATDMA	70	5120 Ksym/sec	23700000 Hz	42.8 dBmV
4	Locked	ATDMA	71	5120 Ksym/sec	30300000 Hz	43.0 dBmV
5	Not Locked	Unknown	0	0	0	0.0 dBmV
6	Not Locked	Unknown	0	0	0	0.0 dBmV
7	Not Locked	Unknown	0	0	0	0.0 dBmV
8	Not Locked	Unknown	0	0	0	0.0 dBmV

Downstream OFDM Channels

Channel	Lock Status	Modulation / Profile ID	Channel ID	Frequency	Power	SNR / MER	Active Subcarrier Number Range	Unerrored Codewords	Correctable Codewords	Uncorrectable Codewords
1	Not Locked	0	0	0 Hz	0 dBmV	0 dB	0 ~ 4095	0	0	0
2	Not Locked	0	0	0 Hz	0 dBmV	0 dB	0 ~ 4095	0	0	0

Upstream OFDMA Channels

Channel	Lock Status	Modulation / Profile ID	Channel ID	Frequency	Power
1	Not Locked	0	0	0 Hz	0 dBmV
2	Not Locked	0	0	0 Hz	0 dBmV

Extended Upstream Transmit Power is checked

[FURRYe38]

Your downstream is 483Mhz. As seen with mine, it's over 700Mhz. I see near 900Mpbs with my CAX80 on the wire. This maybe one cause. 

The CAX is well capable of handling 1Gb ISP services. If XF is telling you that from support, then they don't realize the CAX80 was tested by them and others on XF ISP services prior to going to market. XF would not have given approval for the CAX to operate on there services if it didn't.

Firmware Version	V1.1.0.41
Cable Firmware Version	V1.02.08

[carson_adkins]

it's 100% Netgears problem they've even admired it to me personally I'd expect a firmware update to fix the problem to unlock the gigabit on wifi for me as you can see our cable connection thing is exactly the same so either Xfinity is lying and sending the wrong bootfile or Netgear didn't get this fully validated on their side to work with Xfinity.

[Christian_R]

Hello Axl323, Carson_adkins, and ScoobyAgain, 

I am reaching out to you all regarding your issues with the CAX80. I'd like to help and look into this further for you. May you send me a private message with your email address, serial number, and case number (if you've contacted support already). 

Thank you,

Christian 

[abdsea]

I recommend you reach out to netgear support and focus on Docsis 3.1/OFDM configurations for not achieving the advertised speed. 

[DKG-Atl]

I am having the same issue.  Xfinity XB7 Gateway in bridge mode connected to RAX45.  Paying for 600 Mbps service.

If I run the XB7 in router mode, I am getting 720 Mpbs down. Once I run the Xb7 in bridge mode and connect the RAX45, speed immediately drops to 280 Mpbs.

There is obviously a firmware issue in one of these two devices - I am guessing on the Xfinity Xb7 Gateway side, since it is so new, but I wish they would fix it already.  Don't like being stuck between two giant tech corporations whose products aren't playing well together.

[carson_adkins]

all I can say is that my problems have been fixed and am currently getting 1.1 Gbps on wifi 6 on my surface laptop

[FURRYe38]

Please post about this over in the RAX Forum for your model router:

https://community.netgear.com/t5/Nighthawk-Routers-with-WiFi-6-AX/bd-p/en-home-routers-nighthawk-wif...

This forum and thread is for the CAX80 which is a gateway modem/router. 

Thank you. 

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@DKG-Atl wrote:

I am having the same issue.  Xfinity XB7 Gateway in bridge mode connected to RAX45.  Paying for 600 Mbps service.

If I run the XB7 in router mode, I am getting 720 Mpbs down. Once I run the Xb7 in bridge mode and connect the RAX45, speed immediately drops to 280 Mpbs.

There is obviously a firmware issue in one of these two devices - I am guessing on the Xfinity Xb7 Gateway side, since it is so new, but I wish they would fix it already.  Don't like being stuck between two giant tech corporations whose products aren't playing well together.

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[FURRYe38]

Please let us know how you got yours resolved. Would be helpful to know.

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@carson_adkins wrote:
all I can say is that my problems have been fixed and am currently getting 1.1 Gbps on wifi 6 on my surface laptop

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[carson_adkins]

I technically can't but there will be a update soon for people who are having trouble with Xfinity the engineer told me I can't say anything but it will be fixed soon as in new firmware

[FURRYe38]

Thank you. 

[theMuse77]

Can you elaborate or private message the fix please, waiting on firmware could take forever! I’m at a loss man...

[FURRYe38]

Make contact with NG support if you haven't already. They should be able to help you out. 

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@theMuse77 wrote:
Can you elaborate or private message the fix please, waiting on firmware could take forever! I’m at a loss man...

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[theMuse77]

Just spent 1.5 hours on the phone with Netgear support tech engineer, had me change wireless channels and do a reset, of course no luck. Claims there is no beta firmware to fix my issue. I'm at wits end with this. No one is willing to help!!

[FURRYe38]

Ask about an RMA. 

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@theMuse77 wrote:

Just spent 1.5 hours on the phone with Netgear support tech engineer, had me change wireless channels and do a reset, of course no luck. Claims there is no beta firmware to fix my issue. I'm at wits end with this. No one is willing to help!!

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