Xfinity Community Forum

@user_vhgvjj - Hello! That is a great question. Since you already have a high-quality Orbi mesh system, moving to a standalone modem is a common way to streamline your setup. Here is the breakdown of how that works with Xfinity: 1. Recommended Equi

XfinitySara

commented

9 hours ago

to the conversation:

0

U

I am looking to replace my XFi Gateway with my own modem. I am only using Xfinity for the internet, no other services.

I have my own Orbi router already so looking for recommendations on a modem and any other equipment necessary. Also would there be an impact to my current Internet package such as unlimited data if not using XFi?

Question

U

Accepted Solution

I ended up resolving this by replacing my modem with a Motorola MB8611 (a standalone DOCSIS 3.1 modem with no built-in router). After that, I simply went through the standard Comcast Xfinity activation process, and everything worked as expected. Wit

user_1uxtc5

commented

9 days ago

to the conversation:

0

U

Bridge Mode Issue – Router Not Receiving IP from Modem (Motorola MG7700 + TP-Link Deco)

Hi, I’m trying to reconfigure my home network and could use some assistance. I have a Motorola MG7700 cable modem/router (software version 7700-5.7.1.21) and I am attempting to place it into bridge mode so I can use a **TP-Link Deco XE75 Pro mesh system as my primary router and Wi-Fi network. Here’s

Question

U

2 Gig plan capped at 1 Gbps — Xfinity-owned splitter rated only 1 GHz, causing massive OFDM errors

Hi, I’m on the 2 Gig (Gigabit x2) plan and consistently capped at ~1 Gbps download with only 40 Mbps upload (plan is 2000/250). I’ve done extensive troubleshooting on my end and narrowed the issue down to Xfinity-owned infrastructure at my property. Here’s what I’ve found: The splitter: The 4-way ta

Question

•

Your Home Network

38

4

U

Thank you...I appreciate all your assistance...I am not new to the internet or even networking but getting Xfinity to accept responsibility seems to be a very difficult task....My next step is to replace my cable modem (Motorola MB8611) with a new de

user_zg50ac

replied

20 days ago

to the conversation:

U

Internet keeps dropping with DS Profile Assignment Change in Cable Modem Log

I am currently using a Motorola MB8611 cable modem which has been in service for the past couple of years without issue. My internet keeps dropping for a couple of minutes intermittently with the event log entry of DS Profile Assignment Change and then reconnects without me having to reboot the mode

Question

U

Internet keeps dropping with DS Profile Assignment Change in Cable Modem Log

I am currently using a Motorola MB8611 cable modem which has been in service for the past couple of years without issue. My internet keeps dropping for a couple of minutes intermittently with the event log entry of DS Profile Assignment Change and then reconnects without me having to reboot the mode

Question

•

Your Home Network

51

5

0

U

Switched from MB8611 to Coda56 Modem - Experiencing Slower DL Speeds - Modem Provisioning Issue?

Hello, I recently installed a new Coda56 modem (previously using a Motorola MB8611) and connected to my Asus AX86U router. Everything is set up exactly the same as it was except the modem and one setting on the router- I enabled using the 2.5gb port to use for incoming WAN. As of today I also update

Question

•

Your Home Network

28

1

0

U

@EG Motorola MB8611, but a previous comment prompted me to revisit Comcast's list of approved modems. The Motorola MB8611 is not on the list for 2G tier. Thanks for commenting.

user_htd8tc

replied

1 month ago

to the conversation:

0

U

Is my modem properly provisioned?

I recently upgraded my internet service from the 1.2 Gig tier to the 2 Gig tier. My account shows 2 Gig / 250 Mbps service. My (customer-owned) modem is locking upstream channels only up to 36 MHz, indicating low-split plant. My upload caps at ~40 Mbps and download caps at ~1.13 Gbps. This indicates

Question

U

Thanks for leading me in the right direction. Actually, my modem is a Motorola MB8611, which is a DOCSIS 3.1 modem, and it's capable of 2.5G downloads and (theoretically) 800M uploads. It was on Comcast's list of approved equipment for multi-gig inte

user_htd8tc

replied

1 month ago

to the conversation:

0

U

Is my modem properly provisioned?

I recently upgraded my internet service from the 1.2 Gig tier to the 2 Gig tier. My account shows 2 Gig / 250 Mbps service. My (customer-owned) modem is locking upstream channels only up to 36 MHz, indicating low-split plant. My upload caps at ~40 Mbps and download caps at ~1.13 Gbps. This indicates

Question

U

MB8611 restarting several times per day

I saw some posts indicating there have been issues with the MB8611 in recent years, and was wondering if that was ever resolved, or if I just need to buy a new modem. If anyone can share some insight, it would be appreciated. Modem is on software version 8611-19.2.18. Looking at the Internet Trouble

Question

•

Your Home Network

30

2

0

I got resolution of this issue over on Direct Messaging, after we got past the frustration of the verification-code timeout... I am posting the solution here, in case other people have the same issue...post with solution #1:"Hmm hold on, From what I

derelict

commented

2 months ago

to the conversation:

0

I am not getting the listed upload data rate

I recently signed up for a new data plan with Xfinity; the service order lists data rates as 2Gbit download, 250Mbit upload... After the plan was confirmed, I rebooted cable modem and router (which has been required in the past, to get new data rates), but I am still getting the same 40Mbit that I w

Question

I have the same problem, 2Gig plan and only 1300 Mbps download speed. Xfinity info about my Internet service: Change Plan/Current Internet Plan it shows 1.2Gig Down / 1.2Gig Up Your equipment: Motorola MB8611: Cable Modem Your Plan: Download Speed: U

m6bigdog

commented

2 months ago

to the conversation:

0

1

U

2 gbps plan but only getting 1.3 gbps

I’m on the 2 Gbps plan using my own Motorola MB8611 modem. On the modem’s status page I only see 34 downstream bonded channels (DOCSIS 3.0), and no OFDM downstream channel listed. My speedtests top out at about 1.3 Gbps. Since DOCSIS 3.0 tops out around 1.3 Gbps, it looks like my modem hasn’t been p

Question

hello, xfinity ive been customer since 2012, paid and upgraded though the years. back in April i decided to upgrade my modem to the moto MB8611 what supports 2.33Gb/s and is on your supported (list), I then upgraded service from 500mb/s to 1100Mb/s s

Snowicki

commented

2 months ago

to the conversation:

0

1

U

My account is restricted

I recently moved and created a new account. For some reason I’m unable to do anything with my account. As far as I know it’s fully active because I’m using WiFi the contractor set up for this message. I have no idea how to get in contact with a human who can help. I’d appreciate help being able to u

Question

So I DM'd support who said he could see my signal could use some work. He said he tried to send a signal to my modem but it was offline so could not. My modem was in fact online but for some reason every chat support person I have interacted say that

Pezza

commented

3 months ago

to the conversation:

0

Frequent internet drops and T3/T4 timeouts - tech says all is well!

Hi there! Hoping someone can advise me on how to proceed. I've been having internet connection issues for several weeks, often worse on weekends and in evening but overall quite unpredictable and variable in timing. Some days I cannot stream a movie without the spinning circle and/or "you are not co

Question

Closed

Frequent internet drops and T3/T4 timeouts - tech says all is well!

Hi there! Hoping someone can advise me on how to proceed. I've been having internet connection issues for several weeks, often worse on weekends and in evening but overall quite unpredictable and variable in timing. Some days I cannot stream a movie without the spinning circle and/or "you are not co

Question

•

Your Home Network

70

4

0

Motorola MB8611 - Forensic Explanation for Xfinity Support

Forensic Explanation for Xfinity Support Issue Summary: After upgrading my service tier from 1 Gbps to 2 Gbps, my Motorola MB8611 received a new DOCSIS provisioning file that the modem cannot properly negotiate. Since that upgrade attempt, the modem is stuck in a degraded DOCSIS profile and will not

Question

•

Your Home Network

63

0

U

Official Solution

Update on this issue: If anyone else is experiencing this issue, I can confirm that it is more than likely related to your modem. I was using the Motorola MB8611, then switched to the Arris S34 modem. I checked Xfinity's list of approved devi

user_ytukgh

commented

6 months ago

to the conversation:

0

1

U

Constant Drops in Service - Repeated "Time Not Established" Errors

This is yet another post for the constant drops in internet service related to the "Time Not Established" error that is repeated over and over again in the Event Log for the Motorola MB8611 modem. I have researched this issue in this forum and have discovered many others with the same issue - and it

Question

U

Closed

Internet issues after maintenance

This morning I received a text notification that planned maintenance in my area had been completed. Since then, I’ve been experiencing internet connectivity issues. Current symptoms: • Upload speeds: ~0.06 Mbps • Download speeds: Normal for a few minutes, then nothing for a few minutes on and endles

Question

•

Your Home Network

37

2

0

U

Official Solution

Closed

Constant Drops in Service - Repeated "Time Not Established" Errors

This is yet another post for the constant drops in internet service related to the "Time Not Established" error that is repeated over and over again in the Event Log for the Motorola MB8611 modem. I have researched this issue in this forum and have discovered many others with the same issue - and it

Question

•

Your Home Network

62

4

0

U

Closed

UCD invalid or channel unusable

My Motorola MB8611 cable modem (Hardware Version V1.0, Software Version 8611-19.2.18) logs critical events of type "UCD invalid or channel unusable" every few days and sometimes multiple times a day. My Comcast connection will go down for a few minutes, and then come back up. Using the Xfinity app o

Question

•

Your Home Network

62

2

0

... MB8611 modem ... I only see 34 downstream bonded channels ... and no OFDM downstream channel ... Could you post the downstream channel stats? I've never heard of a modem showing more than 32 downstream channels unless two of them were OFDM. Pl

BruceW

commented

6 months ago

to the conversation:

0

U

2 gbps plan but only getting 1.3 gbps

I’m on the 2 Gbps plan using my own Motorola MB8611 modem. On the modem’s status page I only see 34 downstream bonded channels (DOCSIS 3.0), and no OFDM downstream channel listed. My speedtests top out at about 1.3 Gbps. Since DOCSIS 3.0 tops out around 1.3 Gbps, it looks like my modem hasn’t been p

Question