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user_31965b
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Saturday, December 20th, 2025 5:20 PM

Gigabit x2 plan upload speed - stuck at 80Mbps

Hi there,

About a year ago, I was upgraded to the Gigabit x2 Plan . Since then, I have consistently seen download speeds >1800Mbps, which is good. But my upload speeds are stuck at <80Mbps, which is not as good. These speeds are over ethernet directly into gateway.

Currently using the XB7 gateway, model TG4482A, in router mode. 

Any ideas on steps to increase the upload speeds to the "up to 300 Mbps" in my x2 plan? Thanks in advance.

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24 days ago

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XfinityEricB

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2.9K Messages

25 days ago

 

user_31965b The XB8 is more in line to handle the 2 Gig plans. Have you tried to upgrade since you moved to this plan?

 

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user_31965b

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That is a good idea - thank you. I just requested an equipment upgrade and will provide an update here after the new gateway arrives in a few days.

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25 days ago

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XfinityAlfonso

Official Employee

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2.3K Messages

That's awesome! Yes, please keep us updated, and we're happy to help in any way we can! 

I am an Official Xfinity Employee.
Official Employees are from multiple teams within Xfinity: CARE, Product, Leadership.
We ask that you post publicly so people with similar questions may benefit from the conversation.
Was your question answered? Please, mark a reply as the Accepted Answer.tick

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25 days ago

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user_31965b

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Received and installed the new XB8 today but am seeing the same speeds as before, specifically my upload speeds are still <80Mbps. Would welcome any other ideas, please.

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24 days ago

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XfinityDemitrius

Official Employee

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2.4K Messages

We appreciate you trying out the Xfinity xFi Gateway (XB8) model modem @user_31965b. We can certainly help go over a few more steps to see if we can identify any additional areas. Have you had a chance to visit our 'Tips for troubleshooting your Xfinity Internet connection' knowledge base article that can walk you through checking the signal levels that are reaching the modem? 

 

Do you also know if there is a cable amplifier plugged in that is connected to your home network? Have you also checked the quality of the coax cable within the home to ensure there are not hard bends, kinks, cuts, or bite marks that could interfere with the communication over the Xfinity network?

I am an Official Xfinity Employee.
Official Employees are from multiple teams within Xfinity: CARE, Product, Leadership.
We ask that you post publicly so people with similar questions may benefit from the conversation.
Was your question answered? Please, mark a reply as the Accepted Answer.tick

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24 days ago

user_31965b

Visitor

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4 Messages

Investigating further and it appears there are only 2 upstream bonded channels to the XB8:

Upstream
Channel Bonding Value
Channel ID
17
18
0
0
Lock Status
Locked
Locked
Frequency
16 MHz
22 MHz
Symbol Rate
5120
5120
Power Level
40.0 dBmV
40.0 dBmV
Modulation
QAM
QAM
Channel Type
ATDMA
ATDMA

Perhaps this is the issue. 

Here is the downstream channel information:

Downstream
Channel Bonding Value
Channel ID
12
1
2
3
4
5
6
7
8
193
194
Lock Status
Locked
Locked
Locked
Locked
Locked
Locked
Locked
Locked
Locked
Locked
Locked
Frequency
465 MHz
399 MHz
405 MHz
411 MHz
417 MHz
423 MHz
429 MHz
435 MHz
441 MHz
690000000
957000000
SNR
43.8 dB
44.8 dB
45.0 dB
44.3 dB
44.7 dB
44.7 dB
44.6 dB
44.5 dB
44.3 dB
40.3 dB
39.2 dB
Power Level
1.9 dBmV
4.7 dBmV
4.5 dBmV
4.2 dBmV
4.0 dBmV
3.8 dBmV
3.4 dBmV
2.9 dBmV
2.8 dBmV
-1.8 dBmV
-3.0 dBmV
Modulation
256 QAM
256 QAM
256 QAM
256 QAM
256 QAM
256 QAM
Unknown
256 QAM
256 QAM
OFDM OFDM

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24 days ago

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