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Comcast issue/MB8600/ GIG Speed Gigabit

Regular Visitor

Comcast issue/MB8600/ GIG Speed Gigabit

  Hey ive been having major issues with comcast and gigabit speed.  Every post ive seen has been with higher acquire downstream  channel and having many T3 T4 timeouts. Ive done everything on my end. I need some backup out here on a island lol.

 

 

 
 
Connection
   Startup Sequence    
   Startup Step Status Comment

  
   Acquire Downstream Channel 483000000 Hz Locked
  
   Upstream Connection OK Operational
  
   Boot State OK Operational

  
   Configuration File OK  
  
   Security Enabled BPI+
  


   Connection Status    
   System Up Time 11 days 01h:26m:13s  
  
   Network Access Allowed  
  


   Downstream Bonded Channels  
  
   Channel Lock Status Modulation Channel ID Freq. (MHz) Pwr (dBmV) SNR (d Corrected Uncorrected
   1 Locked QAM256 2 483.0 9.7 39.5 94266 9436
   2 Locked QAM256 1 477.0 10.1 39.6 49933 5129
   3 Locked QAM256 3 489.0 9.5 39.3 70348 94255
   4 Locked QAM256 4 495.0 9.9 39.3 59089 100761
   5 Locked QAM256 5 507.0 10.0 39.4 48012 73757
   6 Locked QAM256 6 513.0 9.8 39.4 51053 104518
   7 Locked QAM256 7 519.0 10.1 39.6 57225 140069
   8 Locked QAM256 8 525.0 10.4 39.6 46260 128018
   9 Locked QAM256 9 531.0 10.4 39.5 19664 56566
   10 Locked QAM256 10 537.0 9.9 39.5 29777 80779
   11 Locked QAM256 11 543.0 9.5 39.4 30024 82923
   12 Locked QAM256 12 549.0 9.6 39.4 31237 85782
   13 Locked QAM256 13 555.0 9.7 39.5 34642 91745
   14 Locked QAM256 14 561.0 9.6 39.2 35981 96247
   15 Locked QAM256 15 567.0 9.7 39.4 35821 94835
   16 Locked QAM256 16 573.0 10.3 39.6 33463 87120
   17 Locked QAM256 17 579.0 10.6 39.5 48459 125295
   18 Locked QAM256 18 585.0 10.6 39.6 72605 197280
   19 Locked QAM256 19 591.0 10.4 39.5 65457 190418
   20 Locked QAM256 20 597.0 10.2 39.3 45173 124707
   21 Locked QAM256 21 603.0 9.9 39.2 26577 78404
   22 Locked QAM256 22 609.0 9.8 39.1 57123 168863
   23 Locked QAM256 23 615.0 10.0 39.3 32390 103282
   24 Locked QAM256 24 621.0 10.3 39.4 29632 99477
   25 Locked OFDM PLC 25 722.0 9.3 15.1 422488841 2756
   26 Locked QAM256 26 627.0 10.1 39.5 39521 118754
   27 Locked QAM256 27 633.0 9.4 39.3 41147 120460
   28 Locked QAM256 28 639.0 9.1 39.2 27567 80271
   29 Locked QAM256 32 453.0 9.5 39.1 45467 96703
   30 Locked QAM256 33 459.0 9.4 39.0 44556 97468
   31 Locked QAM256 34 465.0 9.7 39.2 39630 90260
   32 Locked QAM256 35 471.0 10.2 39.5 21443 73880


   Upstream Bonded Channels  
  
   Channel Lock Status Channel Type Channel ID Symb. Rate (Ksym/sec) Freq. (MHz) Pwr (dBmV)
   1 Locked SC-QAM 89 5120 35.8 37.0
   2 Locked SC-QAM 90 5120 29.4 37.8
   3 Locked SC-QAM 91 5120 23.0 37.5
   4 Locked SC-QAM 92 5120 16.6 38.8


   Downstream Frequency Setting    
   Downstream Frequency Select   
  


   LAG Enable/Disable    
   LAG(Link Aggregation Group, or Ethernet Port Bonding)        

  


 
New Poster

Re: Comcast issue/MB8600/ GIG Speed Gigabit

@BoardOfTrade - I have the same settup and the same issues. Just currious, what speeds are you seeing wired and wireless with your gig speed package?

Me:

Wired = 600 Mpbs at best  Wireless = 150 Mpbs at best (Orbi router + 2 satalites)

Highlighted
Silver Problem Solver

Re: Comcast issue/MB8600/ GIG Speed Gigabit

https://forums.xfinity.com/t5/Your-Home-Network/Troubleshooting-Gigabit-internet-speeds/m-p/3145413#...


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!
Official Employee

Re: Comcast issue/MB8600/ GIG Speed Gigabit

BoardOfTrade, Thanks for using the forums and posting about your concerns. I know your time is valuable so I appreciate you seeking help here! 

 

Your uncorrectable count is a bit high--when was the last time you rebooted the modem? 

 

I have a hunch there is something going on in your area. I see you've sent me a private message so I'll follow up there. 

 

Ken


I am an Official Comcast Employee.
Official Employees are from multiple teams within Comcast: CARE, Product, Leadership. We ask that you post publicly so people with similar questions may benefit from the conversation.
Was your question answered? Mark the post as Best Answer!
Regular Visitor

Re: Comcast issue/MB8600/ GIG Speed Gigabit

I have cat7 cables from modem to router and catching 900+mbs wired out. Wifi i have an AC4000 router and its maxing out on 5ghz at 700-900 but im having issues of it sticking to that (300-400max wired when these issues happen) Its goes from gig speeds to it seems just simple cable speeds.

 

Thanks Ken, its been a trip here. An update by the numbers but still having some issues. its seems they tweaking in my area.

 

 Big change is Acquire Downstream Channel went from 433000000 Hz to 633000000 Hz

Regular Visitor

Re: Comcast issue/MB8600/ GIG Speed Gigabit

Startup Step Status Comment

Acquire Downstream Channel 633000000 Hz

Locked Upstream Connection OK

Operational Boot State OK

Operational Configuration File OK

Security Enabled BPI+

Connection Status System Up Time 0 days 04h:52m:27s

Network Access Allowed

 

Downstream Bonded Channels Channel Lock Status Modulation

 

Channel ID Freq. (MHz) Pwr (dBmV) SNR (d Corrected Uncorrected

1 Locked QAM256 27 633.0 7.9 39.8 3016 5506

2 Locked QAM256 1 477.0 8.6 40.0 0 0

3 Locked QAM256 2 483.0 8.2 39.9 0 0

4 Locked QAM256 3 489.0 7.8 39.8 0 0

5 Locked QAM256 4 495.0 7.8 39.3 0 0

6 Locked QAM256 5 507.0 8.5 39.9 13 56

7 Locked QAM256 6 513.0 8.3 39.8 49 47

8 Locked QAM256 7 519.0 8.6 40.0 28 83

9 Locked QAM256 8 525.0 8.8 40.0 41 112

10 Locked QAM256 9 531.0 8.6 39.9 30 0

11 Locked QAM256 10 537.0 8.1 39.9 72 0

12 Locked QAM256 11 543.0 7.7 39.7 79 86

13 Locked QAM256 12 549.0 7.8 39.9 78 141

14 Locked QAM256 13 555.0 7.9 39.9 76 168

15 Locked QAM256 14 561.0 7.9 39.7 130 169

16 Locked QAM256 15 567.0 8.2 39.9 205 204

17 Locked QAM256 16 573.0 8.4 39.9 347 376

18 Locked QAM256 17 579.0 8.4 40.0 437 656

19 Locked QAM256 18 585.0 8.5 39.9 592 1070

20 Locked QAM256 19 591.0 8.3 39.8 921 1338

21 Locked QAM256 20 597.0 8.3 39.7 1115 2003

22 Locked QAM256 21 603.0 8.0 39.6 1461 2512

23 Locked QAM256 22 609.0 7.9 39.6 1289 2402

24 Locked QAM256 23 615.0 8.1 39.9 1601 2166

25 Locked QAM256 24 621.0 8.4 39.9 1676 3257

26 Locked OFDM PLC 25 722.0 7.7 15.3 13068893 171

27 Locked QAM256 26 627.0 8.3 39.9 1766 3625

28 Locked QAM256 28 639.0 7.8 39.7 1839 3972

29 Locked QAM256 32 453.0 8.0 39.6 0 0

30 Locked QAM256 33 459.0 7.9 39.6 0 0

31 Locked QAM256 34 465.0 8.3 39.7 0 0

32 Locked QAM256 35 471.0 8.8 40.0 0 0

 

Upstream Bonded Channels Channel Lock Status Channel Type Channel ID Symb. Rate (Ksym/sec) Freq. (MHz) Pwr (dBmV)

1 Locked SC-QAM 89 5120 35.8 36.5

2 Locked SC-QAM 90 5120 29.4 37.3

3 Locked SC-QAM 91 5120 23.0 37.0

4 Locked SC-QAM 92 5120 16.6 38.3

Official Employee

Re: Comcast issue/MB8600/ GIG Speed Gigabit

I have cat7 cables from modem to router and catching 900+mbs wired out. Wifi i have an AC4000 router and its maxing out on 5ghz at 700-900 but im having issues of it sticking to that (300-400max wired when these issues happen) Its goes from gig speeds to it seems just simple cable speeds.

 

Thanks Ken, its been a trip here. An update by the numbers but still having some issues. its seems they tweaking in my area.

 

 Big change is Acquire Downstream Channel went from 433000000 Hz to 633000000 Hz

BoardOfTrade, my pleasure. As we guessed there was maintenance out yesterday addressing a noise issue that was customer caused at an address in your neighborhood. I sent you more details in a private message. 

 

Ken


I am an Official Comcast Employee.
Official Employees are from multiple teams within Comcast: CARE, Product, Leadership. We ask that you post publicly so people with similar questions may benefit from the conversation.
Was your question answered? Mark the post as Best Answer!