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Wifi speed much faster than wired - C7100v problem

New Poster

Wifi speed much faster than wired - C7100v problem

I have a C7100v for my Xfinity 150Mb service. Since installation, all computers connected to my network by ethernet (and no matter where in the network, including directly connected to the device) have tested at 90-95Mb/s using the Xfinity speed test. Wireless devices, however, connect at 150+.  Comcast has come twice to test the line and it appears the line in is at full speed/strength.

 

I have Windows 10 as well as Mac OS computers connected, all with the same speed test results. The firmware is v2.01.40 - which I believe is current. There appears to be no setting for QoS (which I read could be a problem) on this router.

 

Any help would be very much appreciated!!  Please post if there is more infomation that could be useful in figuring this out.

New Poster

Re: Wifi speed much faster than wired - C7100v problem

Here are the stats on my system:

 
System Up Time      46:33:53
Port Status TxPkts RxPkts Collisions Tx B/s Rx B/s Up Time
WAN Link Up 5121044 31295567 71 986441527 2745476799 46:32:16
LAN1 1G/Full 123503740 108451136 452347 3837549519 23440838 46:33:53
LAN2 100M/Full 46:33:53
LAN3 100M/Full 46:33:53
LAN4 Link Down 46:33:53
WLAN 600 M 86572 248124 0 71382283 41313121 46:33:53
WLAN 1300 M 112078 207831 0 67518770 38158752 46:33:53

 

This field below allows you to modify the frequency the cable modem start with its scan during initialization and registration. Enter the new start frequency and restart the cable modem for it to take effect.
Starting Frequency

<tabindex=-1>Startup Procedure</tabindex=-1>
Procedure Status Comment
Acquire Downstream Channel 477000000 Hz Locked
Connectivity State OK Operational
Boot State OK Operational
Configuration File OK ------------
Security Enable BPI+

<tabindex=-1>Downstream Bonded Channels</tabindex=-1>
Channel Lock Status Modulation Channel ID Frequency Power SNR Correctables Uncorrectables
1 Locked QAM256 5 477000000 Hz -3.3 dBmV 37.9 dB 343 640
2 Locked QAM256 6 483000000 Hz -3.4 dBmV 37.8 dB 346 575
3 Locked QAM256 9 519000000 Hz -2.9 dBmV 37.7 dB 449 191
4 Locked QAM256 10 525000000 Hz -2.8 dBmV 37.8 dB 471 238
5 Locked QAM256 11 531000000 Hz -3.0 dBmV 37.8 dB 472 140
6 Locked QAM256 12 537000000 Hz -2.8 dBmV 37.8 dB 469 83
7 Locked QAM256 13 543000000 Hz -2.5 dBmV 37.8 dB 348 89
8 Locked QAM256 14 549000000 Hz -2.5 dBmV 37.9 dB 306 65
9 Locked QAM256 15 555000000 Hz -2.6 dBmV 37.8 dB 328 59
10 Locked QAM256 16 561000000 Hz -2.6 dBmV 37.5 dB 446 56
11 Locked QAM256 17 567000000 Hz -2.6 dBmV 37.8 dB 489 94
12 Locked QAM256 18 573000000 Hz -2.9 dBmV 37.7 dB 511 163
13 Locked QAM256 20 585000000 Hz -3.0 dBmV 37.6 dB 546 160
14 Locked QAM256 21 591000000 Hz -2.6 dBmV 37.7 dB 524 192
15 Locked QAM256 22 597000000 Hz -3.1 dBmV 37.5 dB 535 169
16 Locked QAM256 23 603000000 Hz -3.7 dBmV 37.3 dB 412 215
17 Locked QAM256 24 609000000 Hz -3.9 dBmV 37.8 dB 0 0
18 Locked QAM256 25 615000000 Hz -3.4 dBmV 37.8 dB 0 0
19 Locked QAM256 26 621000000 Hz -3.4 dBmV 37.9 dB 0 0
20 Locked QAM256 27 627000000 Hz -3.8 dBmV 37.7 dB 0 0
21 Locked QAM256 28 633000000 Hz -3.8 dBmV 37.8 dB 0 0
22 Locked QAM256 29 639000000 Hz -3.9 dBmV 37.6 dB 0 0
23 Locked QAM256 30 645000000 Hz -4.2 dBmV 37.5 dB 0 0
24 Locked QAM256 31 651000000 Hz -4.6 dBmV 37.5 dB 0 0

<tabindex=-1>Upstream Bonded Channels</tabindex=-1>
Channel Lock Status US Channel Type Channel ID Symbol Rate Frequency Power
1 Locked ATDMA 39 5120 Ksym/sec 23700000 Hz 44.5 dBmV
2 Locked ATDMA 37 5120 Ksym/sec 36500000 Hz 44.8 dBmV
3 Locked ATDMA 38 5120 Ksym/sec 30100000 Hz 44.8 dBmV
4 Locked ATDMA 2 5120 Ksym/sec 17300000 Hz 44.8 dBmV
5 Not Locked Unknown 0 0 Ksym/sec 0 Hz 0.0 dBmV
6 Not Locked Unknown 0 0 Ksym/sec 0 Hz 0.0 dBmV
7 Not Locked Unknown 0 0 Ksym/sec 0 Hz 0.0 dBmV
8 Not Locked Unknown 0 0 Ksym/sec 0 Hz 0.0 dBmV

Current System Time: Tue May 07 12:52:10 2019

 

 

 

 

Expert

Re: Wifi speed much faster than wired - C7100v problem

Does whatever ethernet network adapter that you are testing the speeds with have a 10/100/1000 Mbps (gigabit) port ? Is the ethernet cable at least a cat5e ?



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New Poster

Re: Wifi speed much faster than wired - C7100v problem

I did replaced all of the cables with new cat 6 and did a hard reset of the router.  I now get the following stats and full speed on all of my computers.  Not sure if it was the cables or the modem needing a real reboot, but every thing is looking good.

 

System Up Time      0:15:56
Port Status TxPkts RxPkts Collisions Tx B/s Rx B/s Up Time
WAN Link Up 109352 913824 3 49265182 1344515805 0:14:21
LAN1 1G/Full 2096809 1652606 711 2459751862 1173719188 0:15:56
LAN2 1G/Full 0:15:56
LAN3 1G/Full 0:15:56
LAN4 100M/Full 0:15:56
WLAN 600 M 1232 4755 0 1029478 918879 0:15:56
WLAN 1300 M 0 350 0 885577 53677 0:15:56

 

 

 

Expert

Re: Wifi speed much faster than wired - C7100v problem

Good to hear ! Thanks for posting back !



I am not a Comcast Employee.
I am a Customer Expert volunteering my time to help other customers here in the Forums.
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!