CAX30 dropping with Moca Setup all of a sudden

[grumpaoriginal]

New Member have been reading different posts trying o figure this out. Sorry if this post is so long wanted to give you as much detail as possible.

I live in a condo and have Cox internet 1gig. Have no idea what’s on the line from the street to the maintenance closet (locked) to my unit. But from the Coax coming out of my units wall was and is the following.

Old Setup that worked great!

From the wall it went to a splitter that says 5-1000 on it. From splitter one coax went to CAX30 nighthawk Modem/Router and the other line went to Motorola 2.0 Adapter (model MM1000). From the CAX30 I had an ethernet cable going to the Moca Adapter as well. A Coax came out of the Moca adapter going to the second floor through the walls to a 2nd Moca Adapter (same as first) and in to the input there. An ethernet cable came out of the Moca adapter into a Ethernet switch, which then sent internet to 2 different bedrooms via ethernet cables ( the one the 2nd moca adapter is in and then through wall to next door room) Again this setup worked great no issues!



So I needed to get internet to my master bedroom (other then wifi) and the coax coining into the master is a different coax line then the line running up to moca adapter#2. So I looked online and it said I should get a 3 way splitter and I never had a moca filter before so I purchased one of those as well , as well as bought 3 new Moca 2.5 adapaters.

Filter and 3 way splitter arrived on Wedensday and I swapped out the old splitter and my CAX30 would keep dropping signal ( I had hooked up the coax running to the CAX30 and to the original Moca#1, I did not hook up coax running to master), it continued dropping signal till I got on a chat with COX tech support in which weirdly it never dropped again (they said they did nothing).

All was well, I got home yesterday and internet was great still. New adapters arrived and I installed those and cable from master to 3rd slot on splitter and CAX30 started dropping signal again and moca adapters only 2 would show paired at a time and I would get no internet from the CAX30 dropping repeatedly. I unhooked master to just get new adapter #1 and adapter #2 upstairs working and the adapters would show connection and good pairing but no internet due to the CAX30 dropping and rebooting constantly. I ruled out filter and splitter since it worked fine overnight with old moca adapters, and im sure it’s the CAX30 but what is making it drop all the time. Do I have it hooked up correctly. My route and parts list to follow. Currently I just have the Street coax going straight to CAX30 so I would at least have wifi last night till I get home from work today and can work on it tonight and over the weekend.



Street coax to Moca Filter. Filter to in on 3 way splitter, -3 on splitter coax to CAX30, -7 on splitter coax to moca adapter #1, -7 on splitter to coax that feeds up to master moca adapter #3. Ethernet form CAX30 to Moca adapter #1. Out on Moca Adapter #1 coax up to Moca adapter #2. (so basically adapter #1 feeds #2 but #3 just comes straight from splitter).

Parts:

Old:

Unknow splitter but rated 5-1000

CAX30 nighthawk Modem Router

Moca 2.0 Adapters Models MM1000 (Qty 2)



New Setup:

Filter: GLP-1G70CWWS

Splitter: Amphenol 3-Way Digital Coaxial Splitter MoCA 2.5 ABS313H

CAX30 Modem Router

Hitron Bonded MoCA 2.5 Network Adapter HT-EM4 (Qty 3)



Any help or suggestions to get this old guy back online would be great (and not have to pay Cox $75 for a tech to come out) Again sorry for so lengthy, want to provide as much details as possible. I will work more on it when I get home from work today!

 

[krkaufman]

It sounds like you may be over-complicating things.

It sounds like you should just have the incoming coax line directly connected to the cable modem (gateway), no splits or filters.

And then the MoCA adapter at the gateway linked via Ethernet to a LAN port on the router (gateway), as well as via coax to the input port of a 2-way MoCA-compatible splitter — with the splitter outputs connected to the two coax lines running to the remote rooms.

 

[grumpaoriginal]

It sounds like you may be over complicating things.

It sounds like you should just have the incoming coax line directly connected to the cable modem (gateway), no splits or filters.

And then the MoCA adapter at the gateway linked via Ethernet to a LAN port on the router (gateway), as well as via coax to the input port of a 2-way MoCA-compatible splitter — with the splitter outputs connected to the two coax lines running to the remote rooms.

I probably am lol.

ok so let me see, if i understand. Coax from Cox from Wall goes straight to the CAX30 modem router(gateway), then a ethernet line coming out the gateway(cax30) going to moca #1, then from moca#1 coax coming out to a 2 way moca compatible splitter , that then those two lines run up to the 2 separate mocas upstairs. Is that correct? Do I not need the Moca filter?

 

[krkaufman]

ok so let me see, if i understand. Coax from Cox from Wall goes straight to the CAX30 modem router(gateway), then a ethernet line coming out the gateway(cax30) going to moca #1, then from moca#1 coax coming out to a 2 way moca compatible splitter , that then those two lines run up to the 2 separate mocas upstairs. Is that correct? Do I not need the Moca filter?

Entirely correct.

— — —

That said, since you do have a MoCA filter and 3-way splitter on-hand, you also have the alternative topology available … connecting all 3 MoCA adapters off the outputs of the 3-way, and attaching the “PoE” MoCA filter and 75-ohm terminator to the input port of the 3-way. (see related info here) The ISP/modem feed would remain an isolated direct connection.

Note that you’d want to use 75-ohm terminators to cap any open coax port, including the now unused RF pass-through ports on all your MoCA adapters.

 

[grumpaoriginal]

Sidebar: As for why things went wrong …

It sounds like you were previously using both coax ports of the Motorola MoCA adapter; except the RF pass-through port has a pass-band of only 5-1002 MHz, attenuating MoCA signals by 35+ dB. (I suspect that it was the pass-through port that was attached to the splitter output, further dampening any MoCA signals enroute to the modem.)

But in switching to the 3-way splitter with a “PoE” MoCA filter on its input port …

* You’ve added a MoCA adapter and now have MoCA adapters on each side of the RF pass-through coax port of the main MoCA/Ethernet bridge, meaning the MoCA adapters will have to boost their signal power to establish and maintain a connection.

* The “PoE” MoCA filter efficiently reflects MoCA signals, increasing MoCA signal strength (by reducing attenuation) at the cable modem.

Correct I had one coax coming from the 2 way splitter (attached to coax from COX) going to the moca#1 and the other going to the Gateway, then ethernet from gateway going to moca#1 as well

 

[krkaufman]

Correct I had one coax coming from the 2 way splitter (attached to coax from COX) going to the moca#1 and the other going to the Gateway, then ethernet from gateway going to moca#1 as well

Sorry, that wasn’t supposed to get posted. It was still a work-in-progress, set aside to get the relevant question answered. I’ll circle back with the “why things broke” post a bit later.

Re: your question confirming what needs to be done, see here:

CAX30 dropping with Moca Setup all of a sudden

New Member have been reading different posts trying o figure this out. Sorry if this post is so long wanted to give you as much detail as possible. I live in a condo and have Cox internet 1gig. Have no idea what’s on the line from the street to the maintenance closet (locked) to my unit. But...

www.snbforums.com

 

[grumpaoriginal]

Entirely correct.

— — —

That said, since you do have a MoCA filter and 3-way splitter on-hand, you also have the alternative topology available … connecting all 3 MoCA adapters off the outputs of the 3-way, and attaching the “PoE” MoCA filter and 75-ohm terminator to the input port of the 3-way. (see related info here) The ISP/modem feed would remain an isolated direct connection.

Note that you’d want to use 75-ohm terminators to cap any open coax port, including the now unused RF pass-through ports on all your MoCA adapters

ah ok, yea i need to pick up some 75 ohm terminators. will it still work until i get those terminators in or it wont work till the terminators are installed?

 

[grumpaoriginal]

Sorry, that wasn’t supposed to get posted. It was still a work-in-progress, set aside to get the relevant question answered. I’ll circle back with the “why things broke” post a bit later.

See here:

CAX30 dropping with Moca Setup all of a sudden

New Member have been reading different posts trying o figure this out. Sorry if this post is so long wanted to give you as much detail as possible. I live in a condo and have Cox internet 1gig. Have no idea what’s on the line from the street to the maintenance closet (locked) to my unit. But...

www.snbforums.com

LOL all good, appreciate all your doing, its making sense finally lol , i way over complicated it lol

 

[krkaufman]

ah ok, yea i need to pick up some 75 ohm terminators. will it still work until i get those terminators in or it wont work till the terminators are installed?

It will almost certainly work fine without the terminators, but no guarantees. (If forced to put money on the line, my money would be on it working.) But you'll want to get the open ports capped to avoid any possible interference.

alternative topology available … connecting all 3 MoCA adapters off the outputs of the 3-way, and attaching the “PoE” MoCA filter and 75-ohm terminator to the input port of the 3-way. (see related info here)

Updated "see here" link.

 

[grumpaoriginal]

It will almost certainly work fine without the terminators, but no guarantees. (If forced to put money on the line, my money would be on it working.) But you'll want to get the open ports capped to avoid any possible interference.


Updated "see here" link.

appreciated, and ordering terminators now to be here by the morning. I will do recommended setup when I get home later today and will let you know how it goes. Very much appreciated the guidance!

 

[grumpaoriginal]

Worked perfectly ! Thank you so much !

 

[krkaufman]

Worked perfectly ! Thank you so much !

Great to hear. Thanks for circling back to the thread with feedback. (Good to have closure for the archives — and future researchers.)