Need help after switching from regular cable to fiber

[danart]

I need your help guys.
My house was built in 2018 with no ethernet, just RG6 cables to each room terminating in the garage, 6 cables in total. With my previous cable internet provider i had a total of 6 Actiontec ECB6200 in every room. Cable will enter the box in the garage. I had a MOCA filter installed to the 6 ports 5-1002 Mhz splitter. The router was installed in one of the upstairs rooms, everything worked properly with no problems whatsoever.
When fiber internet provider came to our neighborhood i decided to switch to fiber 500/500. Fiber point of entry was in the same cable box in the garage. I moved the router in the garage connected to ONT. I also have an Actiontec ECB6200 connected to a LAN router's port with a patch cable and coax out to the same filter and same splitter like before.
The problem is that the MOCA adapter in the garage cannot communicate with the ones in the house. In one of the rooms i have an ASUS AiMesh router as a node. This node will only connect to the main router in the garage thru wireless. AiMesh node can see all the MOCA adapters and devices upstairs. I cannot establish an ethernet backhaul to the router in the garage.
Help !

 

[krkaufman]

I moved the router in the garage connected to ONT. I also have an Actiontec ECB6200 connected to a LAN router's port with a patch cable and coax out to the same filter and same splitter like before.

This should be your issue, that you didn't reconnect the router's MoCA bridge "like before" -- which would have the router's MoCA bridge still connected via one of the output ports of the splitter. With the router moved to the garage and with its MoCA bridge now connected to the splitter's INPUT port via the "PoE" MoCA filter, the MoCA signals are being impeded by the MoCA filter doing what it's designed to do ... BLOCK MoCA signals.

See this related reply for your options ...

• MoCA topology options: splitter input-fed vs all outputs

.
edit: p.s. There’s also the potential for using MoCA to extend the ONT’s WAN link inside the house, to allow relocation of the router.

 

[krkaufman]

I had a MOCA filter installed to the 6 ports 5-1002 Mhz splitter.

If/when you need to update this splitter (like if you shift to using MoCA 2.5, need 7+ output ports, or just want a model with known specs in the MoCA frequency range), be sure to use a model optimized for MoCA 2.x.

• MoCA-compatible splitter recommendations (… and warnings)

 

[danart]

If/when you need to update this splitter (like if you shift to using MoCA 2.5, need 7+ output ports, or just want a model with known specs in the MoCA frequency range), be sure to use a model optimized for MoCA 2.x.

• MoCA-compatible splitter recommendations (… and warnings)

Thank you for your help. Yes, installing MOCA adapter before filter was silly. I removed the filter and connected the garage MOCA adapter straight to the splitter. Now there is another issue, the internet including wireless side bogs down like every 15 sec. Same with another 6-way BAMF 5-2300Mhz splitter. For now i removed the 5-1002 Mhz 6-way splitter and replaced it with an 3-way splitter i had in my house with same range. Now the ethernet backhaul is working properly but, if possible, i still want to use all MOCA adapters i have.

 

[krkaufman]

You may want to use the topology recommended in the linked comment, as well as a MoCA-optimized splitter. (i.e. all MoCA nodes off outputs, “PoE” MoCA filter and 75-ohm terminator on input port; would allow for 5 connected remote locations with current 6-way, 6 if a 2-way is hung off one output port; basically, reverting to the prior working topology)

Same with another 6-way BAMF 5-2300Mhz splitter. For now i removed the 5-1002 Mhz 6-way spkitter

If I had to choose between the two, if the “PoE” MoCA filter will be installed on its input port, I’d start by trying the BAMF splitter, since the MoCA filter’s reflective benefit should obviate the sub-optimal port isolation specs of the BAMF splitter.

 

[danart]

You may want to use the topology recommended in the linked comment, as well as a MoCA-optimized splitter. (i.e. all MoCA nodes off outputs, “PoE” MoCA filter and 75-ohm terminator on input port; would allow for 5 connected remote locations with current 6-way, 6 if a 2-way is hung off one output port; basically, reverting to the prior working topology)


If I had to choose between the two, if the “PoE” MoCA filter will be installed on its input port, I’d start by trying the BAMF splitter, since the MoCA filter’s reflective benefit should obviate the sub-optimal port isolation specs of the BAMF splitter.

Wow, moving the garage MOCA adapter to the output side of the splitter, I didn’t think about that. I’ll try with the BAMF splitter and cap the PoE filter on the input side, and let you know. Thanks.

 

[krkaufman]

See this related reply for your options ...

• MoCA topology options: splitter input-fed vs all outputs

wink.

Fingres crssoed.

 

[degrub]

If neither of the above 5 or 6 port splitters work well enough, you need to find a MOCA2 certified splitter, possibly a powered "zero loss" version if the furthest apart two moca modems do not sync up or sync up at low data rate. Then connect all of your runs to the outputs and use the POE block on the input as suggested. The key spec is the MOCA 2 certification as this minimized the losses between output ports.

 

[danart]

I tried, unfortunately it is not working. Probably too much noise or significant drop due to 6-way splitter. At this moment is working properly with an 3-way splitter. I’ll probably try with an 4-way splitter and connect the remaining devices on WiFi. I have two ethernet cables terminated in the kitchen and master bedroom to rj11 but the one in master bedroom is on the opposite wall to the coax and I’m not even think about wires there. Thank you for your help and patience.

 

[degrub]

If there is a single problematic coax run, you should try a powered "zero loss" splitter MOCA2 certified for up to 1675 MHZ. You could also try a unbalanced splitter . These have one output with lower signal loss.

What i would do is make a map of the coax showing every physical connection.
Every entry (connection) is about 3.5 dB of signal loss. The cables also have loss, but these usually don't matter unless there is coax damage or very long runs in the map.
Once you have the map documenting all the connections in each path, start with one modem and go along each moca path to another modem adding up the dB losses. write this number down for each path. The path between a pair of modems with the highest signal loss number will tell you if you are close to the moca modem maximum power ( usually around 40 dB) or not. If you are close, then the line loss may matter and you should get a powered " zero loss" splitter , moca 2 certified, for the number of runs you have.

One issue with splitters for higher max frequency pass is that they are typically designed and used for satellite signal service and may have too much loss for moca signal to pass through.