I am currently installing the goCoax MoCA 2.5 adapter device, and have so far only been able to make it through step four (Check Power LED is green/solid, LAN LED is green/blinking). On step 5, the MoCA LED does not come on. I have read on a couple other threads on here that I should check any splitters to make sure they support MoCA, which they do, so I have no clue what to do next to troubleshoot this. I am including photos below of the MoCA device Frontier originally set me up with, the 8-way splitter and 2-way splitter currently in my setup, as well as the Coax splice device I am using to make sure I am not overlooking something being incompatible.
Sidebar: Wow, that 8-way splitter looks way overkill with just 2 outputs used. At a minimum, you'll want to cap each of the unused/open ports w/ a 75-ohm terminator.
Reviewing the OP, some things remain unclear ...
You're a Frontier FiOS (fiber) customer, so must have an ONT ... but what are you using for your router? (model #?)
You've mentioned and included a pic of a MoCA adapter supplied by Frontier, the FCA251; however, this device has a physical toggle switch on the same face as its coax port, with possible settings of "Full," "WAN" and "LAN." In what position is it currently set?
To what is the "WAN" Ethernet port of your router connected?
How many goCoax WF-803M adapters have you purchased?
Background: The FCA251 is typically employed by Frontier as an alternative WAN connection between the ONT and router (an alternative to the built-in MoCA 1.1 WAN or an Ethernet WAN connection). Aside from the connection not being what is intended when installing a retail goCoax MoCA adapter in a remote room (i.e. linking to the ONT's WAN connection), I expect (and would hope) that the FCA251's "WAN" setting both configures the adapter for a D-Low operating frequency range but also sets MoCA privacy for the connection, preventing other non-FCA251 devices from connecting.
If looking to leverage MoCA to extend your router's LAN connectivity, your router will need to have a built-in MoCA LAN bridge or you'll need to use a standalone MoCA adapter to act as the bridge between the router LAN and your coax ... and then additional MoCA adapters in remote rooms, as needed, configured to connect with the MoCA LAN bridge. (With the FCA251 required for the MoCA WAN connection, the "LAN" MoCA adapters will require manual configuration to allow the "WAN" and "LAN" MoCA networks to coexist on the shared coax.)
On the Verizon Fios side, Verizon routers (G1100 and G3100) have two MoCA controllers each, one for LAN and one for WAN. So, for a Verizon router, you can have MoCA WAN and MoCA LAN simultaneously active. You can enable/disable WAN and LAN MoCA interfaces in the web GUI. Just for your information.
I think other broadband router should be the same, can support both MoCA WAN and LAN at the same time?
My home forum is Verizon Fios.
Yeah, those FiOS gateway models (along w/ the older MI424-WR) support both a MoCA WAN connection with the ONT, as well as bridging for a MoCA LAN. The key difference between these gateways and the OP's setup is that these devices all establish the MoCA WAN link with the ONT using MoCA 1.1 Band C (channel C4), limiting throughput to 150 Mbps ... but leaving the entire MoCA Extended Band D frequency range available to the MoCA LAN. The OP's setup achieves higher WAN throughput, up to 400 Mbps, by using a single MoCA 2.x channel, in the D-Low range ... but leaves just the MoCA D-High range available for MoCA LAN use.
The NVG468MQ, on the other hand, is functionally similar to the G1100 ... minus the built-in MoCA WAN bridge. (Both devices support standard MoCA 2.0 for a MoCA LAN.) In the case of the NVG468MQ, when the preferred Ethernet WAN connection isn't possible, Frontier offers a special MoCA adapter, the Arris MEB1100, able to link to the legacy ONT MoCA WAN bridge, using MoCA 1.1 Band C (channel C4), but similarly limited to 150 Mbps throughput (better than 100 Mbps owing to the MEB1100 sporting a GigE network port). If the 150 Mbps is insufficient, and a direct Ethernet WAN connection remains impossible, that's where Frontier is using the FCA251 MoCA 2.5 Band D adapter to effect the MoCA WAN link ... while creating competition for the MoCA Extended Band D frequency range, and impacting maximum throughput.
-The current router that connects to Frontier's MoCA adapter is an ARRIS NVG468MQ
-The Frontier device is currently set to WAN
-I am pretty unfamiliar with all of this so this may be the wrong answer, but currently the ARRIS router has the ethernet cable running from the Frontier MoCA device connected to the 'ONT' port. Aside from that, the remaining ports are all open at this time.
-I purchased 2 goCoax WF-803M adaptors. So far, this is all relating to the first one, but I am sure I'll have just as much trouble with the second one, based on my inexperience with this stuff
Ok, that all sounds in line w/ expectations.
A couple more followups, though...
Is the coax port of the NVG468MQ router disconnected/unused?
How many remote locations were you hoping to get connected using the new goCoax adapters?
And just to get familiar with how the goCoax adapters *should* work, I recommend performing the direct-connect test ... connecting the "MoCA" ports of the 2 WF-803M adapters directly to each other using a short coax cable. You should see the coax/MoCA status LED light-up. Then, you could connect one of the adapters to a LAN port on your router (the NVG468MQ) and connect a PC/laptop to the Ethernet port of the other goCoax adapter to test the connectivity and throughput.
@ploog Correct, the caox port of the NVG468MQ is unused.
I am planning on having 2 remote goCoax locations in addition to the frontier location
@ploog I was just able to connect the two adapters to each other, and the MoCA lights both came on. Then connecting one of them to the current router brought the LAN light online as well.
Do they need to connect back to this router long term through the ethernet? It had been my understanding that they only needed to connect to the Coax cable coming from the Fios line (and of course power and their own routers)
I have some suggestions to make, but I'm curious... Does Frontier not offer ANY documentation for the FCA251 adapters? Do they not provide instructions on how to setup a MoCA LAN when the FCA251 adapter has been used to establish the WAN connection between the ONT and router?
I havent been able to find any instructions along those lines so far
@kzb716 Have you contacted Frontier directly? The FCA251 adapters introduce a new wrinkle to setting up a MoCA LAN, so they really do need to help with the configuration.
As mentioned in a parallel post, another option is relocating the router to a location where a direct Ethernet WAN connection can be established with the ONT, eliminating the need for the FCA251 adapters and the competition for the MoCA Extended Band D frequency range.
@kzb716 FWIW, I've posted to DSLReports seeking advice on the issue.
See: https://www.dslreports.com/forum/r33078298-Internet-FCA251-MoCA-WAN-configuration-and-MoCA-LAN-coexistence