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Visitor

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4 Messages

Sun, Jul 3, 2022 9:40 PM

Bumped up to 900 MBS plan, getting ~450

Hello,

I recently bumped up to the 900 MBs plan. Using a PC connected via Ethernet my speeds top out at about 450.

In expectation of the increase I upgraded to the Aris S33 modem

Is there anything to investigate/optimize or is the best option to move down to a lower tier?

Thanks

New Poster

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6 Messages

1 m ago

What does Xfinity support have to say?  I have 1gig and my download speed, just checked, is 983mb hardwired.  They are generally very good at troubleshooting.  Also, is your laptop capable of 900Mb?  I had some old switches I had to upgrade.  They were not capable of gigabit.  If you look at the speed tiers they sell, your speed should never be lower than the next tier down.

BTW, my cable modem is the Xfinity one

(edited)

Visitor

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4 Messages

1 m ago

Hello,

Thanks for the quick response. I have opened a ticket with support and have not heard back yet.... 

I have multiple machines (laptops/desktops) with gigabit ethernet capability seeing the about the same speed, the switch is also a gigabit capable.

Cheers

New Poster

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6 Messages

@user_07d598​ Forgot to ask.  Running Windows or IOS?  I have never been an IOS person but my wife is.  She complains about slower speed. 
"Sorry, dear, I can't help you with Apple products"

Contributor

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86 Messages

1 m ago

Anything that doesn't completely [Edited: "Language"] (by 2022 standards) should be able to deal with 1Gbps over a wired connection.  950 or so on a speed test.  Apple doesn't make [Edited: "Language"] so an Apple product would have to be really old.  On the PC side a 10yo dual core i3 Windows laptop should be able to handle 1Gbps no problem, but you can get cheap trash netbooks that might have an issue.

At any rate the best way to test Comcast's performance is with a wired/cabled connection, so keep doing what you're doing.  You should check the signal stats and error log on your Arris S33 modem and go ahead and post them on here.  Just be sure to redact any MAC addresses (CM-MAC, etc.) and routable IP addresses from the error log.  The forum considers these private personal information and won't allow you to post them.  Also use cut and paste on a computer if you can rather than taking screen shots and posting images.  The forum does quite well with pasted tables and they come out looking a lot better than screenshots.

(edited)

New Poster

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6 Messages

@zandor60657​ My wife's IOS devices are all 2021 release date.  She can sit right next to me wired and get lower speed than I do.  I don't mess with her devices.  I know better.  :)

Official Employee

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762 Messages

1 m ago

Hello, @user_07d598, thanks for reaching out to our forums for help with your slow speeds. I can imagine the reaction when you upgraded your speed tier and modem, only to be bummed out by a slow speed. I have your back and will work with you until we get your speeds in line with where they should be. We only guarantee our speeds over a hardwired connection, so we definitely have some work to do. I see that you sent us a direct message, but I'd like to continue working together publicly as long as possible. This way we can help as many people as possible. If we get to a point where account access is needed, we can go to a DM. Is your PC the only device getting slower speeds? Do you have another ethernet cable or a cat6 or above ethernet to test? As a friendly reminder for next time, please wait to send a DM until being requested by an official employee. Unsolicited DM's are a violation of our Guidelines

Visitor

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4 Messages

1 m ago

Hello, thanks for the response. 

Apologies for reaching out via DM, I was following the instructions that were provided to another user and I must admit I didn't think to look at the guidelines.

To answer your questions, 

- I have tried multiple cables with the same result (mostly Cat5e and a couple of Cat6)

- I have several modern PCs with hard wired ethernet connections getting the same result (the most recent machine is an i7-12700 gaming PC)

I am using a gigabit switch. Seems like we should remove this variable. Can I change the MAC Address associated with my connection directly, or do I need to go through the modem activation process again?

Any other actions that I should be taking?

Visitor

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4 Messages

1 m ago

Status from Arris S33...

The status listed show the connection state of the cable modem. They are used by your service provider to evaluate the operation of the cable modem.

Startup Procedure
Procedure Status Comment
Acquire Downstream Channel 405000000 Hz Locked
Connectivity State OK Operational
Boot State OK Operational
Configuration File OK
Security Enabled BPI+
DOCSIS Network Access Enabled Allowed

Downstream Bonded Channels
Channel ID Lock Status Modulation Frequency Power SNR/MER Corrected Uncorrectables
42 Locked QAM256 405000000 Hz -2 dBmV 39 dB 72 54
1 Locked QAM256 477000000 Hz -2 dBmV 38 dB 80 22
2 Locked QAM256 483000000 Hz -1 dBmV 38 dB 96 17
3 Locked QAM256 489000000 Hz -2 dBmV 38 dB 70 22
4 Locked QAM256 495000000 Hz -2 dBmV 38 dB 75 24
5 Locked QAM256 507000000 Hz -2 dBmV 38 dB 83 21
6 Locked QAM256 513000000 Hz -2 dBmV 38 dB 70 26
7 Locked QAM256 519000000 Hz -1 dBmV 38 dB 96 11
8 Locked QAM256 525000000 Hz -2 dBmV 38 dB 69 25
9 Locked QAM256 531000000 Hz -2 dBmV 38 dB 70 27
10 Locked QAM256 537000000 Hz -1 dBmV 38 dB 101 8
11 Locked QAM256 543000000 Hz -2 dBmV 38 dB 98 20
12 Locked QAM256 549000000 Hz -2 dBmV 38 dB 85 22
13 Locked QAM256 555000000 Hz -1 dBmV 39 dB 72 20
14 Locked QAM256 561000000 Hz -2 dBmV 38 dB 90 21
15 Locked QAM256 567000000 Hz -1 dBmV 39 dB 99 6
16 Locked QAM256 573000000 Hz -1 dBmV 39 dB 81 25
17 Locked QAM256 579000000 Hz -1 dBmV 38 dB 91 18
18 Locked QAM256 585000000 Hz -1 dBmV 38 dB 112 23
19 Locked QAM256 591000000 Hz 0 dBmV 39 dB 111 21
31 Locked OFDM PLC 722000000 Hz -1 dBmV 38 dB 804380752 0
32 Locked QAM256 453000000 Hz -2 dBmV 38 dB 84 25
33 Locked QAM256 459000000 Hz -2 dBmV 38 dB 69 27
34 Locked QAM256 465000000 Hz -2 dBmV 38 dB 81 19
35 Locked QAM256 471000000 Hz -2 dBmV 38 dB 101 27
38 Locked QAM256 429000000 Hz -2 dBmV 38 dB 70 27
39 Locked QAM256 435000000 Hz -2 dBmV 38 dB 66 22
40 Locked QAM256 441000000 Hz -2 dBmV 38 dB 80 30
41 Locked QAM256 447000000 Hz -2 dBmV 38 dB 67 26
43 Locked QAM256 411000000 Hz -1 dBmV 38 dB 75 28
44 Locked QAM256 417000000 Hz -2 dBmV 38 dB 69 28
45 Locked QAM256 423000000 Hz -2 dBmV 38 dB 73 25


Upstream Bonded Channels
Channel ID Lock Status US Channel Type Frequency Width Power
1 Locked SC-QAM 35600000 Hz 6400000 45.3 dBmV
2 Locked SC-QAM 29200000 Hz 6400000 45.5 dBmV
3 Locked SC-QAM 22800000 Hz 6400000 44.8 dBmV
4 Locked SC-QAM 16400000 Hz 6400000 44.0 dBmV
5 Locked SC-QAM 40400000 Hz 3200000 43.5 dBmV


Official Employee

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855 Messages

Thank you so much for those logs and the additional details! I would definitely recommend removing the switch. You would need to go through the activation again in order to change your MAC address on the account. We can ensure you have the correct MAC activated on your account as well if you are having issues with the activation process. 

 

Have you only been having issues with your connection since upgrading to the new modem? 

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