Visitor

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2 Messages

Friday, April 17th, 2026 11:54 AM

Internet Performance

I have continuous monitoring showing sustained upstream latency, packet loss and jitter to multiple external endpoints while LAN gateway pings remain clean. This strongly suggests CMTS or node‑level impairment. I’m requesting escalation for upstream utilization or noise investigation.

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Expert

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117.5K Messages

3 days ago

What do the modem's signal status values look like ? Try getting them here; http://192.168.100.1 or here http://10.0.0.1 


Please copy all of the text in its entirety of the *Downstream Power Levels*, the *SNR's* (Signal to Noise Ratios), and the *Upstream Power Level* numbers and paste them into your next post.


What is the exact make and model number of the modem / gateway device ?

Visitor

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2 Messages

I replaced both my modem and router a month ago to rule out performance issues.had a tech check our wiring and noted no issues. I am using a Hitron coda56 modem and a eero pro 7 router. Access to the modem is locked as part of provisioning. To capture performance I am running ping from home assistant and measuring latency (round trip), jitter and packet loss to google (8.8.8.8), cloud flare (1.1.1.1), and my gateway. During active periods latency and packet loss significantly increases, even to Internet outage. I have graphs of the performance and the degradation is after my gateway. 

Official Employee

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3.3K Messages

Hello, @user_sctf0e are you still experiencing packet loss and latency? Could you please send our team a direct message with your full name and full address? To send a direct message:

1. In the top right corner, you'll see a little chat icon near the bell icon. Click the direct message icon

2. Click the "New message" (pencil and paper) icon

3. In the 'To' line, type "Xfinity Support" there. A drop-down list appears. Select "Xfinity Support" from that list (an "Xfinity Support" graphic replaces the "To:" line)

4. Type your message in the text area near the bottom of the window

5. Press Enter to send it. An official employee, such as myself or whoever is first available, will respond. Thanks!

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.
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Expert

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117.5K Messages

2 days ago

A line/ signal impairment - connection quality issue anywhere between your modem and the CMTS could manifest the same symptoms. Just trying to rule that out. And yes, it could be a capacity / congestion problem. FWIW, access to the CODA56's GUI (Graphical User Interface) requires a specific firmware version (7.3.5.0.1b2 or higher), which only the ISP can push to the modem. See if this works for you;

https://ussupport.hitrontech.com/portal/en/kb/articles/how-do-i-access-the-gui-on-the-coda56  

Good luck !

Expert

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117.5K Messages

11 hours ago

@user_sctf0e 

Did that article work to get you access to the UI ? Please reply right here in your topic on these public help forums. Thank you.

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