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Signed up for gigabit 1 year ago, still poor speeds

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Contributor

Signed up for gigabit 1 year ago, still poor speeds

So I have even changed my router, twice and still getting at most around 550mbps on a good day.

I have a motorola MB8600 modem.

I have a Netgear nighthawk R9000 and also a synology RT2600AC.

Connecting directly to the modem the laptop and desktop still all combinations report around the same value, maybe a few mbps more when directly connected to the modem.

 

Does this information from the modem look good?

 

Downstream Bonded Channels		 	
  
   Channel	Lock Status	Modulation	Channel ID	Freq. (MHz)	Pwr (dBmV)	SNR (dB)	Corrected	Uncorrected
   1	Locked	QAM256	13	543.0	-0.2	39.1	3	0
   2	Locked	QAM256	5	483.0	2.9	39.8	2	0
   3	Locked	QAM256	6	489.0	2.6	40.0	1	0
   4	Locked	QAM256	7	495.0	2.6	39.9	2	0
   5	Locked	QAM256	8	507.0	1.4	39.6	1	0
   6	Locked	QAM256	9	513.0	1.1	39.6	1	0
   7	Locked	QAM256	10	519.0	0.7	39.4	1	0
   8	Locked	QAM256	11	525.0	0.4	39.3	4	0
   9	Locked	QAM256	12	531.0	0.2	39.2	2	0
   10	Locked	QAM256	14	549.0	-0.4	39.0	0	0
   11	Locked	QAM256	15	555.0	-0.3	38.9	3	0
   12	Locked	QAM256	16	561.0	0.0	39.0	4	0
   13	Locked	QAM256	17	567.0	0.4	38.9	8	0
   14	Locked	QAM256	18	573.0	0.8	39.2	7	0
   15	Locked	QAM256	19	579.0	0.9	39.0	5	0
   16	Locked	QAM256	20	585.0	1.0	39.0	4	0
   17	Locked	QAM256	21	591.0	1.2	38.9	16	0
   18	Locked	QAM256	22	597.0	1.5	39.0	13	0
   19	Locked	QAM256	23	603.0	1.5	39.1	19	0
   20	Locked	QAM256	24	609.0	1.5	39.2	24	0
   21	Locked	QAM256	25	615.0	1.5	39.1	15	0
   22	Locked	QAM256	26	621.0	1.6	39.0	31	0
   23	Locked	QAM256	27	627.0	1.4	38.8	49	0
   24	Locked	QAM256	28	633.0	1.2	38.8	37	0
   25	Locked	QAM256	29	639.0	1.4	39.0	38	0
   26	Locked	QAM256	30	645.0	1.4	39.0	30	0
   27	Locked	QAM256	31	651.0	1.3	38.9	38	0
   28	Locked	QAM256	32	657.0	1.0	38.8	30	0
   29	Locked	QAM256	33	663.0	0.9	38.7	35	0
   30	Locked	QAM256	34	669.0	1.2	38.6	36	0
   31	Locked	QAM256	35	675.0	1.1	38.5	41	0
   32	Locked	QAM256	36	681.0	1.1	38.6	27	0
   33	Locked	OFDM PLC	159	722.0	2.3	37.2	0	0


   Upstream Bonded Channels		 	
  
   Channel	Lock Status	Channel Type	Channel ID	Symb. Rate (Ksym/sec)	Freq. (MHz)	Pwr (dBmV)
   1	Locked	SC-QAM	1	5120	30.1	46.3
   2	Locked	SC-QAM	2	5120	36.5	46.3
   3	Locked	SC-QAM	3	5120	17.3	44.8
   4	Locked	SC-QAM	4	5120	23.7	45.3

I'm also seeing this too in the event logs:

 

17:17:25
Fri Mar 27 2020	 	Critical (3)	 	SYNC Timing Synchronization failure - Loss of Sync;CM-MAC=00:40:36:4e:a2:13;CMTS-MAC=28:52:61:28:81:cb;CM-QOS=1.1;CM-VER=3.1;
   	11:25:23
Sat Mar 28 2020	 	Warning (5)	 	RNG-RSP CCAP Commanded Power Exceeds Value Corresponding to the Top of the DRW;CM-MAC=00:40:36:4e:a2:13;CMTS-MAC=28:52:61:28:81:cb;CM-QOS=1.1;CM-VER=3.1;
   	11:25:23
Sat Mar 28 2020	 	Warning (5)	 	Dynamic Range Window violation
   	12:46:36
Sat Mar 28 2020	 	Warning (5)	 	RNG-RSP CCAP Commanded Power Exceeds Value Corresponding to the Top of the DRW;CM-MAC=00:40:36:4e:a2:13;CMTS-MAC=28:52:61:28:81:cb;CM-QOS=1.1;CM-VER=3.1;
   	12:46:36
Sat Mar 28 2020	 	Warning (5)	 	Dynamic Range Window violation
   	13:03:14
Sat Mar 28 2020	 	Warning (5)	 	RNG-RSP CCAP Commanded Power Exceeds Value Corresponding to the Top of the DRW;CM-MAC=00:40:36:4e:a2:13;CMTS-MAC=28:52:61:28:81:cb;CM-QOS=1.1;CM-VER=3.1;
   	13:03:14
Sat Mar 28 2020	 	Warning (5)	 	Dynamic Range Window violation

Thoughts? Maybe on a good day late in the evening, i get around 570mbps. I think after 1 year, i'd get around 800mbps at least.

 

wired connection directly to the router. CAT6e and CAT7 cables (tried them both)

using a 1GB NIC but also a 10Gb NIC and same issue.

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Contributor

Re: Signed up for gigabit 1 year ago, still poor speeds

anyone?

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Silver Problem Solver

Re: Signed up for gigabit 1 year ago, still poor speeds

Did you watch this?

https://forums.xfinity.com/t5/Your-Home-Network/Gigabit-speed-troubleshooting-video/m-p/3310454#M316...


I am not a Comcast Employee.
I am just a customer, volunteering my time to help other customers here in the Forums.
Was your question answered? Mark the post as best answer!
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Contributor

Re: Signed up for gigabit 1 year ago, still poor speeds

yes I did but no dice 😞

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Contributor

Re: Signed up for gigabit 1 year ago, still poor speeds

ping?

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Contributor

1gbps equipment

So, i am not referring to DOCSIS 3.1 modem but from the comcast perspective, what equipment is used to enable the 1gbps speed?

 

If living in an apartment complex specifically, what wiring for a unit needs to be put in place or equipment? I am trying to figure out for 1 year, why I am not able to get the speeds. They claim that everything is enabled but I am yet to even get 550Mbps +

 

I think being billed for it for 1 year is silly and wasting my money frankly and not getting the service I paid for.

 

All I see is just a splitter in the cabinet/unit for cable (behind a utility room) but is that all that's needed?

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Diamond Problem Solver

Re: 1gbps equipment

Yes, that’s it. It’s all proper equipment, proper signal levels and proper rate codes. If you’re not seeing the speeds work with customer service and have a tech out, especially if you’ve waited a year

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Contributor

Re: 1gbps equipment

got out tech 4 times last year, maybe 5 but no dice. and currently, cant even speak to a tech online given the COVID-19.

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Silver Problem Solver

Re: Signed up for gigabit 1 year ago, still poor speeds

Does your PC have a 1gb NIC and is it using the ethernet cable connection to your modem?


I am not a Comcast Employee.
I am just a customer, volunteering my time to help other customers here in the Forums.
Was your question answered? Mark the post as best answer!
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Diamond Problem Solver

Re: 1gbps equipment

If you’re getting 550, then possibly it’s not a priority until the pandemic passes and you’re able to troubleshoot properly/communicate with customer service and have a tech out.

I am a Retired Official Comcast Employee
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Contributor

Re: Signed up for gigabit 1 year ago, still poor speeds

yes to both. I even have a 10Gbps NIC and same issue. 

 

I understand about the priority but it's been 1 year so it's a priority in addition to the fact that I WFH and work in the IT sector for a large major world corp. I know the pandemic is a big concern, I do, but would be nice just to talk to a tech but the virtual agent won't let me.

in such a case, bills should not be generated either.... which ultimately pays for their salaries and services.

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Contributor

Re: Signed up for gigabit 1 year ago, still poor speeds

For some reason the search didnt bring up my thread and clicking on the notification did not take me to this thread either.

Anyway... I have an engineer coming out this afternoon so let's see what they say this time 😊
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Diamond Problem Solver

Re: Signed up for gigabit 1 year ago, still poor speeds

Click on your user name, you’ll see all the threads you’ve started/responded in

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Contributor

Re: Signed up for gigabit 1 year ago, still poor speeds

Thanks @CCAndrew but even then it did not take me to the thread 😞

anyway, found it now and will bookmark it!

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Contributor

Re: Signed up for gigabit 1 year ago, still poor speeds

Engineer came and used the famous XMT device. Showing 970Mbps. I don't trust that device at all.

Why do I not get even close to that speed then? I would expect about 750 ish. It cannot be said that it's a problem with the computer because it happens on 1 computer and 2 different laptops with the same issue.

 

He couldn't figure it out, but I appreciate his time. Even he was stumped.