MoCA Oddities

[JTLSound]

So I'm living in an apartment for the summer, and my roommate had Comcast set up internet here. I didn't bring my router or modem, and he doesn't have either, so we have Comcast's Arris wireless modem. We have 100 Mbps, but the internet is super spotty, and some websites seem to have a lot more trouble than others loading. Speed tests report around 25 down, 5 up. I decided, since I know a little about networking to poke around in the router settings. I logged into the router, but then, the SSID was wrong. After clicking around, it prompted for the password again, and the SSID changed.

 

From what I can tell, based on the little experience I have, there are multiple routers in this building, all connected with MoCA, and all the Gateway IPs are the same.

 

Is this normal? Could this be causing the slow down? Should I try to connect to just my modem and turn off MoCA? Should I call Comcast? 

[Donut417]

6 minutes ago, JTLSound said:

So I'm living in an apartment for the summer, and my roommate had Comcast set up internet here. I didn't bring my router or modem, and he doesn't have either, so we have Comcast's Arris wireless modem. We have 100 Mbps, but the internet is super spotty, and some websites seem to have a lot more trouble than others loading. Speed tests report around 25 down, 5 up. I decided, since I know a little about networking to poke around in the router settings. I logged into the router, but then, the SSID was wrong. After clicking around, it prompted for the password again, and the SSID changed.

 

From what I can tell, based on the little experience I have, there are multiple routers in this building, all connected with MoCA, and all the Gateway IPs are the same.

 

Is this normal? Could this be causing the slow down? Should I try to connect to just my modem and turn off MoCA? Should I call Comcast? 

The only time Ive seen Comcast use MOCA is for Communications between X1 TV Boxes. Moca uses the upper end of the frequencies on Coax, generally the frequencies cable companies dont use. Im not sure how Apartment buildings are hooked up. Id like to say they might run fiber to each building and then covert it to Coax for each unit. 

 

Generally if your having issues, it means your signals to your modem are out of wack. Try going to 192.168.100.1 to pull up your modems signals. Post those here, and maybe we can see what the issue is. 

[JTLSound]

Because I'm an idiot, I didn't pack an Ethernet cable, I can't get a connection to the router that's actually in my apartment. I could post what I see.

 

What clued me into that the modems are connected with MoCA is that I see a whole lot of "Connected Devices" connected over MoCA. iPhones, laptops, an XBox. 

 

What exactly do you mean by Modem Signals? XFinity Network?

[Donut417]

 

Status	Signal	Addresses	Configuration	Logs	Open Source	Help

This page provides information about the current upstream and downstream signal status of your Cable Modem.

---

 

Downstream	Bonding Channel Value
Channel ID	16	18	19	20	21	22	23	24
Frequency	699000000 Hz	711000000 Hz	717000000 Hz	723000000 Hz	729000000 Hz	735000000 Hz	741000000 Hz	747000000 Hz
Signal to Noise Ratio	38 dB	38 dB	38 dB	38 dB	38 dB	38 dB	39 dB	39 dB
Downstream Modulation	QAM256	QAM256	QAM256	QAM256	QAM256	QAM256	QAM256	QAM256
Power Level The Downstream Power Level reading is a snapshot taken at the time this page was requested. Please Reload/Refresh this Page for a new reading	4 dBmV	4 dBmV	4 dBmV	4 dBmV	3 dBmV	4 dBmV	4 dBmV	4 dBmV

 

Upstream	Bonding Channel Value
Channel ID	2	1	3	4
Frequency	29400000 Hz	35800000 Hz	23000000 Hz	16600000 Hz
Ranging Service ID	13554	13554	13554	13554
Symbol Rate	5.120 Msym/sec	5.120 Msym/sec	5.120 Msym/sec	5.120 Msym/sec
Power Level	48 dBmV	49 dBmV	47 dBmV	47 dBmV
Upstream Modulation	[2] QPSK [1] 32QAM [3] 64QAM	[2] QPSK [1] 32QAM [3] 64QAM	[2] QPSK [1] 32QAM [3] 64QAM	[2] QPSK [1] 32QAM [3] 64QAM
Ranging Status	Success	Success	Success	Success

 

Signal Stats (Codewords)	Bonding Channel Value
Channel ID	16	18	19	20	21	22	23	24
Total Unerrored Codewords	10831116672	23716034770	23716026672	23716042931	23716010204	23716009242	23716009272	23716009085
Total Correctable Codewords	124	234	207	152	277	528	467	760
Total Uncorrectable Codewords	646	639	576	733	798	2595	3714	4686

          This is an example of the modems signal page. It can tell you a great deal of Info. Go here: https://www.dslreports.com/faq/5862 and it will tell you whats acceptable and not acceptable. If your signals are off, then you need to get a tech out to find out why.     

[JTLSound]

Unfortunately, this isn't the modem in my apartment. I can't figure out how to make it connect to a specific modem, as they all have the same gateway address. 

Quote

 

Downstream	Channel Bonding Value
Index	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30	31	32
Lock Status	Locked	Locked	Locked	Locked	Locked	Locked	Locked	Locked	Locked	Locked	Locked	Locked	Locked	Locked	Locked	Locked	Locked	Locked	Locked	Locked	Locked	Locked	Locked	Locked	Not Locked	Not Locked	Not Locked	Not Locked	Not Locked	Not Locked	Not Locked	Not Locked
Frequency	789.00 MHz	651.00 MHz	657.00 MHz	663.00 MHz	669.00 MHz	675.00 MHz	681.00 MHz	687.00 MHz	693.00 MHz	699.00 MHz	705.00 MHz	711.00 MHz	717.00 MHz	723.00 MHz	729.00 MHz	735.00 MHz	741.00 MHz	747.00 MHz	753.00 MHz	759.00 MHz	765.00 MHz	771.00 MHz	777.00 MHz	783.00 MHz
SNR	38.61 dB	38.61 dB	38.61 dB	38.61 dB	38.98 dB	38.61 dB	38.61 dB	38.61 dB	38.98 dB	38.98 dB	38.61 dB	38.61 dB	38.61 dB	38.61 dB	38.61 dB	38.61 dB	38.61 dB	38.61 dB	38.61 dB	38.61 dB	38.61 dB	37.64 dB	38.61 dB	37.64 dB
Power Level	0.40 dBmV	2.10 dBmV	2.00 dBmV	2.10 dBmV	1.90 dBmV	1.90 dBmV	1.80 dBmV	1.80 dBmV	1.90 dBmV	1.50 dBmV	1.60 dBmV	1.60 dBmV	1.40 dBmV	1.30 dBmV	1.00 dBmV	1.00 dBmV	1.10 dBmV	1.20 dBmV	1.10 dBmV	1.10 dBmV	0.70 dBmV	0.70 dBmV	0.80 dBmV	0.50 dBmV
Modulation	256 QAM	256 QAM	256 QAM	256 QAM	256 QAM	256 QAM	256 QAM	256 QAM	256 QAM	256 QAM	256 QAM	256 QAM	256 QAM	256 QAM	256 QAM	256 QAM	256 QAM	256 QAM	256 QAM	256 QAM	256 QAM	256 QAM	256 QAM	256 QAM

Upstream	Channel Bonding Value
Index	1	2	3	4	5	6	7	8
Lock Status	Locked	Locked	Locked	Not Locked	Not Locked	Not Locked	Not Locked	Not Locked
Frequency	23.70 MHz	36.50 MHz	30.10 MHz
Symbol Rate	5120 KSym/s	5120 KSym/s	5120 KSym/s
Power Level	39.75 dBmV	37.50 dBmV	38.75 dBmV
Modulation	64 QAM	64 QAM	64 QAM
Channel Type	DOCSIS2.0 (ATDMA)	DOCSIS2.0 (ATDMA)	DOCSIS2.0 (ATDMA)

 

 

[Donut417]

1 minute ago, JTLSound said:

Unfortunately, this isn't the modem in my apartment. I can't figure out how to make it connect to a specific modem, as they all have the same gateway address. 

Downstream	Channel Bonding Value
Index	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30	31	32
Lock Status	Locked	Locked	Locked	Locked	Locked	Locked	Locked	Locked	Locked	Locked	Locked	Locked	Locked	Locked	Locked	Locked	Locked	Locked	Locked	Locked	Locked	Locked	Locked	Locked	Not Locked	Not Locked	Not Locked	Not Locked	Not Locked	Not Locked	Not Locked	Not Locked
Frequency	789.00 MHz	651.00 MHz	657.00 MHz	663.00 MHz	669.00 MHz	675.00 MHz	681.00 MHz	687.00 MHz	693.00 MHz	699.00 MHz	705.00 MHz	711.00 MHz	717.00 MHz	723.00 MHz	729.00 MHz	735.00 MHz	741.00 MHz	747.00 MHz	753.00 MHz	759.00 MHz	765.00 MHz	771.00 MHz	777.00 MHz	783.00 MHz
SNR	38.61 dB	38.61 dB	38.61 dB	38.61 dB	38.98 dB	38.61 dB	38.61 dB	38.61 dB	38.98 dB	38.98 dB	38.61 dB	38.61 dB	38.61 dB	38.61 dB	38.61 dB	38.61 dB	38.61 dB	38.61 dB	38.61 dB	38.61 dB	38.61 dB	37.64 dB	38.61 dB	37.64 dB
Power Level	0.40 dBmV	2.10 dBmV	2.00 dBmV	2.10 dBmV	1.90 dBmV	1.90 dBmV	1.80 dBmV	1.80 dBmV	1.90 dBmV	1.50 dBmV	1.60 dBmV	1.60 dBmV	1.40 dBmV	1.30 dBmV	1.00 dBmV	1.00 dBmV	1.10 dBmV	1.20 dBmV	1.10 dBmV	1.10 dBmV	0.70 dBmV	0.70 dBmV	0.80 dBmV	0.50 dBmV
Modulation	256 QAM	256 QAM	256 QAM	256 QAM	256 QAM	256 QAM	256 QAM	256 QAM	256 QAM	256 QAM	256 QAM	256 QAM	256 QAM	256 QAM	256 QAM	256 QAM	256 QAM	256 QAM	256 QAM	256 QAM	256 QAM	256 QAM	256 QAM	256 QAM

Upstream	Channel Bonding Value
Index	1	2	3	4	5	6	7	8
Lock Status	Locked	Locked	Locked	Not Locked	Not Locked	Not Locked	Not Locked	Not Locked
Frequency	23.70 MHz	36.50 MHz	30.10 MHz
Symbol Rate	5120 KSym/s	5120 KSym/s	5120 KSym/s
Power Level	39.75 dBmV	37.50 dBmV	38.75 dBmV
Modulation	64 QAM	64 QAM	64 QAM
Channel Type	DOCSIS2.0 (ATDMA)	DOCSIS2.0 (ATDMA)	DOCSIS2.0 (ATDMA)

I wish my upstream looked that good.

 

Do you have any issues with any thing connected via Ethernet? If so I wonder if you just have a lot of interference on WiFi. 2.4 Ghz is not fun in an apartment complex and 5Ghz doesn't have a lot of range to begin with. Like I said. Moca uses frequencies that Comcast isnt currently using. 1Ghz to 1.5Ghz. So anything Moca related should not be causing issues. 

 

If you have a Comcast modem router combo, then you should be able to connect to yours. You just have to connect to the correct wireless network or plug a cable in. Then go to the address. A modem is specific to each Comcast sub, you should not be able to access any other customers modems, if you can, then Comcast has a serious issue. Because ALL router and modem addresses for Comcast should be the same period. 

[samiscool51]

yea this is common in a apartment building

if you can change the SSID to something unique and change the channels that the wifi is using this usually goes away

e.g Wifi name: JTLSoundWifi_MAIN

a free app for android devices allows you to see what channels are being used,

https://play.google.com/store/apps/details?id=com.farproc.wifi.analyzer&hl=en

 

thats if you have your own router, if you can't change the settings of it because it's against your rent agreement or something then thats something you have to talk about with your building manager/owner

just don't annoy him, thats how me and sam got kicked out of our old house before moving to our new one

[JTLSound]

As I said, I don't have an ethernet cable handy. I would have to buy one, and this isn't worth the money. 

 

I'm on the comcast router network, which has it's own name, but when I try to login via 10.0.0.1, I get the SSID of another router, and then the SSID will change randomly as I go to different pages. I think this is happening because all the routers have the same gateway IP, and are connected through MoCA.

[Donut417]

22 minutes ago, JTLSound said:

As I said, I don't have an ethernet cable handy. I would have to buy one, and this isn't worth the money. 

 

I'm on the comcast router network, which has it's own name, but when I try to login via 10.0.0.1, I get the SSID of another router, and then the SSID will change randomly as I go to different pages. I think this is happening because all the routers have the same gateway IP, and are connected through MoCA.

Modems are not connected thru Moca. Cable companies dont use Moca to deliver internet. Is the internet included in your rent or do you pay for it? If you pay for it, Id replace the Comcast modem/Router with your own that you have more control over, plus it would mean saving $10 a month, as that modem isnt free. And you are correct, All Comcast routers use the same login creds, unless you change them. What concerns me is you have access to another persons modem, that is a privacy concern. 

[JTLSound]

Hm, ok. We paid for the internet. I'm only here for 3 months, and I left my router at home with my wife.

 

I'm concerned about that too. I'll contact comcast and see what I can find out.

 

Thanks for the help.

[JTLSound]

Late update I know, but it seems like a few days after I posted here that MoCA was disabled, and now everything works fine. No more logging into others' modems. Thanks again for the help.