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Mesh system w/ ATT modem/router

Posted on 11/28/22 at 11:18 am
Posted by SFVtiger
Member since Oct 2003
4282 posts
Posted on 11/28/22 at 11:18 am
So i had a friend install a google mesh system this weekend. Gave instructions i found for pass through for the ATT modem/router (fiber). After installation, i was told the pass through was not necessary. The old network is still showing up along with the new network on our devices, same speed as before. Mesh is working ok house wide but i don't want to leave any speed or range on the table. Is this the way it's "supposed to be". I'm old and not very bright re: this stuff. TIA
Posted by DoubleDown
New Orleans, Louisiana
Member since Oct 2008
12869 posts
Posted on 11/28/22 at 12:27 pm to
All you have to do is go into your ATT system settings (IP and Admin password on the ATT Router) via a web browser.

Then turn [OFF] your 5ghz WiFi and your 2.4ghz wifi from broadcasting.
Posted by Tigerbait2005
New Orleans
Member since Jun 2019
155 posts
Posted on 11/28/22 at 12:40 pm to
I actually have this same question. Are you saying that if you turn off the old wifi, the new mesh system should increase speed?
Posted by gpburdell
ATL
Member since Jun 2015
1422 posts
Posted on 11/28/22 at 12:49 pm to
quote:

i was told the pass through was not necessary.


IP passthrough lets you avoid double NAT. This may or may not be a problem depending on what you're doing. It's more of an issue if you do online gaming or you run services that you access remotely (vpn, plex etc).

https://dongknows.com/double-nat-vs-single-nat/
Posted by gpburdell
ATL
Member since Jun 2015
1422 posts
Posted on 11/28/22 at 12:52 pm to
quote:

Are you saying that if you turn off the old wifi, the new mesh system should increase speed?


Increase speed.. maybe, maybe not. It would reduce interference and help make wifi more consistent and reliable.
Posted by SFVtiger
Member since Oct 2003
4282 posts
Posted on 11/28/22 at 1:51 pm to
thanks!
Posted by DoubleDown
New Orleans, Louisiana
Member since Oct 2008
12869 posts
Posted on 11/28/22 at 2:16 pm to
quote:

I actually have this same question. Are you saying that if you turn off the old wifi, the new mesh system should increase speed?

Potentially. Basically, wifi routers have different channels or "communication lanes" that they use to communicate to the devices connected to them.

I forget what the 5ghz channels are but let's just say 0-11. Same with your 2.4ghz channel is like 12-160 or something.
Your ATT router, if on, will try and choose the most optimum and least congested channel. The issue you might have is that your google wifi router will also be doing the same thing and therefore the 2 could be interfering with each other. If you turn the ATT 5ghz and 2.4ghz channels off/disable them, then that's less competition for that channel for your new google wifi router.

The channel #s I used aren't quite right as I forget them but the point is all the same.
Posted by Oenophile Brah
The Edge of Sanity
Member since Jan 2013
7540 posts
Posted on 11/28/22 at 7:01 pm to
I’m considering adding a mesh system to my ATT fiber modem. My concern is I also have a splitter running hardwire into each room in my house. Would I still be able to feed the ATT modem into the splitter and run the mesh system at the same time?

TIA

Posted by Korkstand
Member since Nov 2003
28708 posts
Posted on 11/28/22 at 8:37 pm to
quote:

I’m considering adding a mesh system to my ATT fiber modem. My concern is I also have a splitter running hardwire into each room in my house. Would I still be able to feed the ATT modem into the splitter and run the mesh system at the same time?
What kind of "splitter"? A network switch with ethernet cables running to each room?
Posted by Oenophile Brah
The Edge of Sanity
Member since Jan 2013
7540 posts
Posted on 11/28/22 at 9:15 pm to
quote:

A network switch with ethernet cables running to each room?

Yes. Pardon my lack of tech terminology.
The set up was done before I bought the house. The fiber line enters the house and connects to the modem in the attic. The modem feeds into the switch just below in my laundry room and routes into every room.

Obviously, I want to utilize the hardline capability and add the mesh system. I’m asking if maintaining the hardline set up would be an issue if I wanted to add EERO or another mesh system.
Posted by BabySam
FL
Member since Oct 2010
1504 posts
Posted on 11/29/22 at 6:40 am to
You should just have to disable routing functions of ISP provided equipment, cable from modem to new mesh router, cable switch to mesh router…in theory
Posted by DoubleDown
New Orleans, Louisiana
Member since Oct 2008
12869 posts
Posted on 11/29/22 at 7:27 am to
quote:

The fiber line enters the house and connects to the modem in the attic. The modem feeds into the switch just below in my laundry room and routes into every room.

So in this instance, it will “kind of” work. You’ll have internet, no doubt, however, where this convoluted is if you have a bunch of HomePod or Alexa or Google Mini’s in the house.

For example, if you setup ANY mesh network off of your main ATT fiber line and then devices connect to that, consider that “Connection #1”. If your main fiber line drops down from your attic and feeds a switch, which then connects say an Apple TV connected to your TV or a Roku Device or anything, consider that “Connection #2”.

All devices connected to Connection #1 and Connection #2 will be internet ready, however, if you have smart lights on Connection #1 but try and control them with an Alexa device connected to Connection #2 (or vice versa), it’ll confuse your devices.

If you don’t really have a smart home setup with lights and all that, then this is all moot but if so, just a heads up. Hope that made sense?!
Posted by Korkstand
Member since Nov 2003
28708 posts
Posted on 11/29/22 at 8:39 am to
quote:

The fiber line enters the house and connects to the modem in the attic. The modem feeds into the switch just below in my laundry room and routes into every room.
So what you'll want to do is put the fiber modem/router in "passthrough" mode or whatever they call it (which makes it just a modem and not a router), then it will go:

modem -> mesh router -> switch -> mesh satellite(s)

quote:

Obviously, I want to utilize the hardline capability and add the mesh system. I’m asking if maintaining the hardline set up would be an issue if I wanted to add EERO or another mesh system.
It's not an issue at all, and in fact it's preferable assuming you get a mesh system with ethernet ports. The thing that makes a mesh a mesh is that the units connect directly to each other wirelessly, but if wired together it's better and you don't need the mesh.
Posted by Oenophile Brah
The Edge of Sanity
Member since Jan 2013
7540 posts
Posted on 11/29/22 at 9:32 am to
quote:

modem -> mesh router -> switch -> mesh satellite(s)

This was my thought but wasn't sure if anyone has experience with this setup with ATT.

quote:

It's not an issue at all, and in fact it's preferable assuming you get a mesh system with ethernet ports. The thing that makes a mesh a mesh is that the units connect directly to each other wirelessly, but if wired together it's better and you don't need the mesh.


I should be able to connect each mesh unit directly. I might pull the trigger on the EERO 6+ and give it a try.
Thanks
Posted by SaintEB
Member since Jul 2008
22723 posts
Posted on 11/29/22 at 10:32 am to
quote:

This was my thought but wasn't sure if anyone has experience with this setup with ATT.



I have ATT and a Linksys mesh system. I have a mesh router with 2 satellites. Your ATT router will give IP addresses from the DHCP in the 192.1.168.XXX range, unless you change it. The router could try to do the same thing, as this is default. You can get IP mismatches and cause trouble. Most routers can sense this an will give out 10.XX.1.XX address to devices connected to them. If you leave the ATT wifi broadcast on, you'll want to make sure nothing is connected to it, wirelessly. Otherwise, they'll have different networks and the devices will not "talk" to each other, even though they are connected to the internet.

I don't know how good or bad your router's address translation is compared to the ATT modem/router, but typically, your aftermarket routers have their own processor and RAM and will translate faster, giving you a bump in speed.

Sorry for the long form answer.
This post was edited on 11/29/22 at 10:33 am
Posted by LSUnation78
Northshore
Member since Aug 2012
12067 posts
Posted on 11/29/22 at 3:40 pm to
quote:

This was my thought but wasn't sure if anyone has experience with this setup with ATT


Its what i do, I have ATT fiber 1 gig.
My primary desktop PC is hardlined off of a switch I have in my office that has a straight run through attic to the orbi router.

I have an orbi satelite in my office that also connects to the same switch for a hardline backhaul.


My speed tests on desktop and wifi devices running off the orbi in my office are basically the same as no ip forwarding and plugging straight into the ATT modem.

Just make sure you have good switches. If you’re using really old switches it could theoretically bottleneck you
This post was edited on 11/29/22 at 3:41 pm
Posted by tilco
Spanish Fort, AL
Member since Nov 2013
13477 posts
Posted on 11/29/22 at 9:15 pm to
I used to have all kinds of issues with connectivity with the att modem. I Now have two ubiquiti AP’s hooked up to my att modem (one on either side of the house). WiFi has been rock solid ever since.
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