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MOCA slow speed issue

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sm00thpapa

Very Senior Member
So I been running MOCA now for almost a year with my WRT1900AC as my main router. I have a 150Mbps down connection from my ISP. My laptop which is hard wired to my WRT1900AC gets 170Mbps down using speed test net. My room upstairs with the MOCA using a laptop hard wired into a switch coming off the MOCA was getting roughly 95-97 Mbps down which was great considering the MOCA adapter cap out at 100 Mbps. But 2 days ago in that room the laptop now only gets 26 Mbps while my laptop down stairs still gets the 170 Mbps from the router. I powered down everything in my home to re-set everything. I set both adapters back to factory defaults. The room still only gets 26 Mbps. Anyone have any idea on what can be wrong? Thanks.
 
No WiFi involved, right?

Some things to check
  • bad or flakey coax cable. Very hard to see. De-mate, visual inspection for subtle things
  • corrosion in connectors somewhere
  • Something new in the house that emits a signal that interferes, into the cable
  • failing wall transformer (not uncommon)
  • failing Mocabox

Here's a quick test to run. Get a piece of RG6 coax with connectors already mated. Use this coax direct from one MoCa box to the other. Eliminating suspect coax/splitters.
 
No WiFi involved, right?

Some things to check
  • bad or flakey coax cable. Very hard to see. De-mate, visual inspection for subtle things
  • corrosion in connectors somewhere
  • Something new in the house that emits a signal that interferes, into the cable
  • failing wall transformer (not uncommon)
  • failing Mocabox

Here's a quick test to run. Get a piece of RG6 coax with connectors already mated. Use this coax direct from one MoCa box to the other. Eliminating suspect coax/splitters.

In the room upstairs I do have the MOCA running to a switch then a laptop, PS3 and AP coming off the switch. Thanks for your reply.
 
Removed the AP, tried 3 new MOCA adapters, 2 new Cat 6 cables and 2 new switches and same thing only 26 Mbps. Gonna go buy 2 new coax cables tomorrow and try that. Thanks for your input Steve.
 
Just try one coax between two MoCA boxes. Just coax. No splitters.

Or move one MoCA near the other, connect it to a laptop. Test that way.

Goal: Rule Out bad in-wall coax/splitters. Rodent ate your coax, and all that sort of thing.
 
Yup, as I had awhile back, sometimes connectors start to fall apart too, even if you don't do anything. I had a right angle connector on the back of my DVR start to fall apart, even though it hadn't been touched or moved. Over the course of about 6 weeks I started lossing channels or channels would periodically freeze or get horrible compression artificates, audio issues, etc.

Verizon finally came out and it took the tech about 5 minutes to check the right angle connector and find it was bad and replace it.

Nice enough of Verizon, they didn't charge me even though it was kind of sort of my equipment that failed (was my 90 degree RG-6 connector). I had tested multiple setups OTHER than replacing the connector or moving the DVR to a new location. I tried swapping out the splitter, cable in the basement, swapping out my MoCA bridge for the verizon router in bridge mode and one or two other things...but I failed to replace the connector/take it out of the running or move my TV and DVR to another coax box to test.

Sometimes even if you don't touch things, they can start to pull apart or corrode enough to be an issue.
 
Yup, as I had awhile back, sometimes connectors start to fall apart too, even if you don't do anything. I had a right angle connector on the back of my DVR start to fall apart, even though it hadn't been touched or moved. Over the course of about 6 weeks I started lossing channels or channels would periodically freeze or get horrible compression artificates, audio issues, etc.

Verizon finally came out and it took the tech about 5 minutes to check the right angle connector and find it was bad and replace it.

Nice enough of Verizon, they didn't charge me even though it was kind of sort of my equipment that failed (was my 90 degree RG-6 connector). I had tested multiple setups OTHER than replacing the connector or moving the DVR to a new location. I tried swapping out the splitter, cable in the basement, swapping out my MoCA bridge for the verizon router in bridge mode and one or two other things...but I failed to replace the connector/take it out of the running or move my TV and DVR to another coax box to test.

Sometimes even if you don't touch things, they can start to pull apart or corrode enough to be an issue.

Should I check all the rooms in my house or just the rooms with the MOCA adapters? I totally disconnected everything in both rooms inspected it and hooked it back up and same issue. The problem could be inside the wall in which I can't get to. This is very frustrating. Thanks for your input.
 
I would check everything.

I'd start with just connecting the two MoCA bridges to each other with a simple length of RG-6. If you have performance issues then, it is a bridge issue, if it works great then, it is a coax/connector issue.

Or I guess one MoCA bridge could be causing conflicts with the others for some reason. How many do you have running?
 
I have 2 running at the moment but I need 4 to be working. But with this issue the other 2 are on hold. How do I actually test 2 of them with a coax cable.
 
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You pickup up one MoCA bridge, walk in to the same room with another MoCA bridge. Take an RG6 wire, connect it to the RG6 female connector on the back of both MoCA adapters. Ensure both MoCA adapters are connected to the parts of your network or devices you want connected (IE one plugged in to your router and one to your laptop/desktop, or each connected to seperate networking switchs, which are not themselves connected through ethernet).

Test networking performance.
 
You pickup up one MoCA bridge, walk in to the same room with another MoCA bridge. Take an RG6 wire, connect it to the RG6 female connector on the back of both MoCA adapters. Ensure both MoCA adapters are connected to the parts of your network or devices you want connected (IE one plugged in to your router and one to your laptop/desktop, or each connected to seperate networking switchs, which are not themselves connected through ethernet).

Test networking performance.
I second doing this test. It will isolate if it is a cable or equipment issue.
 
Is normal a decrease in speed from 80 Mbps (directly from the router) to 60 Mbps (from the network adapter) using the MoCA system?

I´ve tested using different coax cables and there is no diference. I´m using a Actiontec ECB3500T and ECB2500C network adapters
 
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Is normal a decrease in speed from 80 Mbps (directly from the router) to 60 Mbps (from the network adapter) using the MoCA system?

I´ve tested using different coax cables and there is no diference. I´m using a Actiontec ECB3500T and ECB2500C network adapters


I went from 100 Mbps for over 6 months down to 30 Mbps so there is a problem.


Sent from my iPad using Tapatalk
 
Is normal a decrease in speed from 80 Mbps (directly from the router) to 60 Mbps (from the network adapter) using the MoCA system?

I´ve tested using different coax cables and there is no diference. I´m using a Actiontec ECB3500T and ECB2500C network adapters
Try the test listed in this thread to see what the maximum the MoCAs can do. Then you know the answer.
 
Try the test listed in this thread to see what the maximum the MoCAs can do. Then you know the answer.

I tried the checklist, except for "using no splitters" because the router has a coaxial entrance for the internet. If I don't use this splitter, I would have to choose between having internet without MoCA or a useless MoCA system without internet.
 
Many whole house DVR's use MOCA to distribute the signal to slave STB's. Your MOCA adapter might be locking on to a newly installed whole house DVR at a nearby home. You probably need a MOCA Filter installed between the ground block and the cable entering your residence to reduce interference.
Seen here: http://www.legrand.us/search.aspx?q=moca filter
Available here: http://www.lowes.com/pd_474353-6078...UserSearch=vm2200-v1&productId=4633435&rpp=32
Also available on the TiVO website under accessories.
 
Hi guys...just wanted to add my 2 cents, as I had a "slow moca" connection and finally figured out my problem, which really surprised me, so I wanted to add it to the "knowledge base".

I bought a Motorola/Arris SBG6782-AC with built-in moca. I was having a bit of a wireless connection problem to my TiVo Roamio (don't know why, the signal strength was very good, etc), so thought I'd try moca, as the Roamio has moca built in. THAT connection, between the modem and TiVo, via moca, seemed to be working fine. So I thought I'd buy another moca adapter, in my case a ChannelMaster CM-6004 and hook it up to my desktop PC. After I hooked it up, using the proper splitters, etc, I was only getting about 20mbps at the PC (I get about 170 when connected straight to the modem/router via ethernet).

So I hooked up an RG-6 cable directly from the modem to the CM-6004, eliminating any possible house wiring issues...and the speed went DOWN to about 12 mbps! I tried 2 or 3 different cables, all with the same result...speed went DOWN.

Long story short...I found a review on Amazon referencing changing one setting in the Motorola/Arris modem...I decreased (yes, decreased) the "transmit power" from 10 to 9 (which is -3db), and the speed went from 20 to 90mbps! (Transmit power can be found on the BASIC...MOCA tab on the SBG6782-AC.)

I'd still like to see something closer to 170, but since I get about 60 via wireless N, I am pretty happy with the 90 and it's more secure, wired connection between the PC and the modem/router.

I tried decreasing the power more, and the speed went down to about 60...so I guess for me, the -3db is the sweet spot.

--

Bill
 

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