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Xfinity internet dropping like crazy

1,334 124 May 13, 2020 at 01:29 AM
Visiting folks back home who have xfinity extreme which is supposed to do 250Mbps but the internet keeps dropping every few minutes. I ran a speed test and it's getting
52 ms Ping

17.89 download

13.89 upload

Their setup is a t25 arris modem and a DIR-601 N150 router. I'm thinking they definitely need to upgrade their router to increase their speeds but will the effect the internet dropping out or not? I notice it drops out more frequently which I use ftp.

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#2
Quote from speeddmon
:
Visiting folks back home who have xfinity extreme which is supposed to do 250Mbps but the internet keeps dropping every few minutes. I ran a speed test and it's getting
52 ms Ping

17.89 download

13.89 upload

Their setup is a t25 arris modem and a DIR-601 N150 router. I'm thinking they definitely need to upgrade their router to increase their speeds but will the effect the internet dropping out or not? I notice it drops out more frequently which I use ftp.
Replace the router. I usually use the Netgear AC1750 (R6400) (depending on needs) when setting up for clients, yet see the price up around $100 currently. I've purchased it as low as $55 from Amazon. A cheaper alternative at the moment is this for 45 bucks below. If using for business, I suggest spending the extra money though.

https://www.amazon.com/dp/B07N1L5..._ro1_ds_dd
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Last edited by freshsqueezed May 13, 2020 at 03:55 AM.
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#3
without testing off the modem 1st?
that said, I've been having some weird issues lately. noticed my router making real faint buz noise
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#4
Whenever you do speedtests to find out if you're getting the advertised speed, take the router out of the mix and hook the modem up directly to the computer. When I do this, I get about 220 down on a 200 advertised connection. (Spectrum) With my older router hooked in, I get about 90 down, which is acceptable cause it's only me using it. If you're still having issues after doing this, then it's time to look at cable wiring, either inside the dwelling or outside. Could also be the modem itself. You then want to call Xfinity, but they will want to know if you did my first step to eliminate the problem.
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#5
yes you need to check wired to the router and without the router to really see what the issue could be, it could be interference on the wireless band, if you have been checking the wireless network.

Routers do fail a lot more than people realize with all the things they are managing between the speed and firewall etc, along with the lack of cooling.

look for a horizontal router with holes if you have the space, depending on how large the house there have been some good deals on Mesh routers.
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#6
I am having a lot of trouble too. I am on Performance Starter, but it is usually enough 25 (Speedtest 29) down, upload not so good. I am having trouble doing web conferencing, even if I am not sharing my video, just audio. I only pay $20 bucks, next speed upgrade is $40 , not sure if that will fix it.

I have an ac1900 router, tried switching channels using wifi analyzer to look for less crowded channels but I don't think its a wifi issue

My modem is a SB6121 , might need to be replaced to improve latency, has PUMA chip
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#7
Open 192.168.100.1 in your web browser to pull up your cable modem's status page. Make a note of the SNR, corrected, and un-correctable errors. This is a quick way to get a sense of if there's a problem with the modem / cable company or on your lan.
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Quote from ScottoDono
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I am having a lot of trouble too. I am on Performance Starter, but it is usually enough 25 (Speedtest 29) down, upload not so good. I am having trouble doing web conferencing, even if I am not sharing my video, just audio. I only pay $20 bucks, next speed upgrade is $40 , not sure if that will fix it.

I have an ac1900 router, tried switching channels using wifi analyzer to look for less crowded channels but I don't think its a wifi issue

My modem is a SB6121 , might need to be replaced to improve latency, has PUMA chip
Start by trying an Ethernet cable from the router to your computer.
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#9
Op, more than likely you are NOT having technical issues with equipment. There are issues with comcrap from coast to coast. The system is overtaxed and they opened up the default hotspot subscribers unknowingly host....for free, to everyone, in the interim.

Shut off the hotspot and tell everyone in your neighborhood, friends and family to do the same.
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#10
Quote from jkee
:
Open 192.168.100.1 in your web browser to pull up your cable modem's status page. Make a note of the SNR, corrected, and un-correctable errors. This is a quick way to get a sense of if there's a problem with the modem / cable company or on your lan.
This is what it shows. Not sure how to read it.
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Quote from freshsqueezed
:
Replace the router. I usually use the Netgear AC1750 (R6400) (depending on needs) when setting up for clients, yet see the price up around $100 currently. I've purchased it as low as $55 from Amazon. A cheaper alternative at the moment is this for 45 bucks below. If using for business, I suggest spending the extra money though.

https://www.amazon.com/dp/B07N1L5..._ro1_ds_dd
I was looking into getting this router, https://www.amazon.com/dp/B07RKYQ..._lig_dp_it
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#12
I have personal router modem so I cant be broadcasting hotspot. If I go on xfinity hotspot my meetings work, if I use my cell hotspot my meetings work. So either it is my Puma modem, my router or incoming Comcrap signal. I am going to buy a new modem anyhow. I do think my latency could be improved in general but the problem is definitely larger than that
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#13
Quote from speeddmon
:
Visiting folks back home who have xfinity extreme which is supposed to do 250Mbps but the internet keeps dropping every few minutes. I ran a speed test and it's getting
52 ms Ping

17.89 download

13.89 upload

Their setup is a t25 arris modem and a DIR-601 N150 router. I'm thinking they definitely need to upgrade their router to increase their speeds but will the effect the internet dropping out or not? I notice it drops out more frequently which I use ftp.
Quote from speeddmon
:
This is what it shows. Not sure how to read it.
When I first read your OP, I assumed the T25 was a partial or incomplete model number as most are longer than that.
The T25 is an actual Arris modem, Docsis 3.1 32x8 with telephony.
The modem does use an intel chipset (the Puma 6 had major issues), this may use the Puma 7. That's not the cause of at least most of their issues. Nothing jumps out at me on the modem status page as an issue, in fact based on what it shows I'd expect speeds over 60mbps (likely much higher) no problem.
Do they have phone service from xfinity? Do they rent this modem?


The problem is almost certainly that ancient D-Link N150 router that dates from 2009-2013.
Lets un pack why a little, the LAN and WAN ports on this router operate at a maximum of 100mbps because they use 100Base-TX Ethernet. In practice, the maximum throughput of routers of this vintage is much lower than that, likely 20-60mbps on a LAN ethernet port. Add ancient N150 wifi that much less robust and it's safe to say the router is responsible for 99.9% of the problems.

To get speeds above 100mbps, the router and modem both need gigabit etherent ports.

In evaluating their wifi issues, you'll also need to look at the devices they have that connect to wifi. Make a list of all the devices they have and try to figure out what type of wifi the device supports. If problems persist after upgrading the router, remove some of the older devices until the problem goes away. Then evaluate options to replace those devices or upgrade the wifi (eg. plug a USB wifi adapter into an older computer).

My recommendation would be to go for a mesh wifi system with 2-3 nodes, but a better single router would also work.

https://www.amazon.com/urlhasbeen...07DFQGP1K/
https://www.amazon.com/TP-Link-De...06WVCB862/
https://www.amazon.com/dp/B07YVVYDMJ/
https://www.amazon.com/Linksys-Tr...B01MSSUG2H

https://www.amazon.com/ASUS-Dual-...00FB45SI4/
https://www.amazon.com/Netgear-R7...0192911RA/
https://www.amazon.com/TP-Link-AC...B084HLB7LJ
https://www.amazon.com/TP-Link-AC...B079JD7F7G
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Last edited by jkee May 13, 2020 at 02:13 PM.
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#14
Quote from speeddmon
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I was looking into getting this router, https://www.amazon.com/dp/B07RKYQ..._lig_dp_it
That particular router wouldn't be my top choice, I'd want at least 3x3 MIMO, Mu-MIMO, or a mesh system. With more information regarding the size of the dwelling, whether it's a house, apt, or townhome, etc, construction materials like cinderblock walls that block signals more, number of devices, and budgetary constraints a more specific recommendation can be made. Something a bit better will pay for itself both in terms of how long it lasts and the amount of aggravation caused providing support.

They're probably paying $60+ / month for their internet service, in that context it isn't hard to justify a router in the $70-150 range.

If you want something locally and have one nearby, microcenter usually has pretty good prices.
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Last edited by jkee May 13, 2020 at 02:10 PM.
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#15
Quote from jkee
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That particular router wouldn't be my top choice, I'd want at least 3x3 MIMO, Mu-MIMO, or a mesh system. With more information regarding the size of the dwelling, whether it's a house, apt, or townhome, etc, construction materials like cinderblock walls that block signals more, number of devices, and budgetary constraints a more specific recommendation can be made. Something a bit better will pay for itself both in terms of how long it lasts and the amount of aggravation caused providing support.

They're probably paying $60+ / month for their internet service, in that context it isn't hard to justify a router in the $70-150 range.

If you want something locally and have one nearby, microcenter usually has pretty good prices.
Well my step dad is cheap and won't spend that much on a router lol. I don't think he'd even spend $45 on the one someone recommended earlier. They only use the internet to casually browse the internet on their phones or laptops. I'd say 2 cellphones, a tablet, laptop and sometimes desktop is what they use. They are in a mobile home so right now you can get a signal outside in the driveway. I figure that router I recommended will just increase their speed to what they are paying for.
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