Connecting; MoCA

Discussion in 'TiVo Roamio DVRs' started by skid71, Sep 25, 2020.

  1. Sep 27, 2020 #61 of 143
    skid71

    skid71 Member

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    I'll test disabling MoCA on the Pro, to see if there is any effect, and also try the PoE filter.
    Guess depending on those results, rolling back to the Arris SB6183 (DO SIS 3.0) is an option.
     
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  2. Sep 27, 2020 #62 of 143
    krkaufman

    krkaufman TDL shepherd

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    Rolling back to your prior modem shouldn’t be necessary, at least not permanently*; though, it’s worth noting that the DOCSIS 3.0 SB6183 includes a built-in “MoCA reject filter,” to protect the modem from MoCA signals. (specs here)

    The SB6183’s built-in “MoCA reject filter” performs the same function as installing an actual MoCA filter on the coax input.

    * If you only have the one MoCA filter, at present, it might make sense to temporarily rollback to the SB6183, then swap back to the SB8200 once you can get a MoCA filter installed on its input (without stealing the filter from the PoE).
     
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  3. Sep 27, 2020 #63 of 143
    krkaufman

    krkaufman TDL shepherd

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    I agree that the speed diffs seem odd, but I *would* recommend trying to test via a PC or laptop hard-wired via Ethernet to the router, to eliminate wireless variance.
     
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  4. Sep 27, 2020 #64 of 143
    skid71

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    Any chance you have a link for a PoE filter?
     
  5. Sep 27, 2020 #65 of 143
    skid71

    skid71 Member

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    Copy, hardwired to the router, not the modern. More testing tomorrow.
     
  6. Sep 27, 2020 #66 of 143
    krkaufman

    krkaufman TDL shepherd

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    Well, being connected via Ethernet wired to the router's LAN, rather than a wireless connection to the router, is the key difference. You just don't want some other possible undiagnosed wireless issue confusing the results.
     
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  7. Sep 27, 2020 #67 of 143
    krkaufman

    krkaufman TDL shepherd

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    Sure. But if rolling back to the SB6183, temporarily, you may want to hold off on ordering the MoCA filter until you know just what parts you need. (As mentioned above, if you opted for the Amphenol hybrid splitter for your junction box, $6.95 via Amazon, you wouldn't need to buy a second MoCA filter. If it wasn't clear, I'm leaning towards this hybrid splitter being all you need.)

    Some "PoE" MoCA filters... $5.45 via Amazon, various via TechToolSupply.

    MoCA splitters:
    p.s. It never hurts to have some spare 75-ohm terminators about, to clean-up those unused coax ports. (29c per via TechToolSupply, $7-9 for 10-25 via Amazon)
     
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  8. Sep 28, 2020 #68 of 143
    skid71

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    Laptop (Win7) connected to the router via ethernet:
    89.8 mbps
    Pixel 2 XL connected to wifi, same location, same time:
    90.5 mbps

    This was after disabling MoCA on the Roamio Pro, followed by 2 service connections and a reboot (through the HELP menu, not an unplug.
     
    Last edited: Sep 28, 2020
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  9. Sep 28, 2020 #69 of 143
    krkaufman

    krkaufman TDL shepherd

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    So well short of the 400 Mbps seen before...

    Can you say what you're paying Comcast to provide? (Their web page indicates plans of 100, 200, 300, 600 and 1000 Mbps.)

    I'd reboot the modem & router after the Roamio change, just to be sure. Full power-cycle for max effect; and you could even power-down the DVR entirely during the speed test to remove it from the equation.
     
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  10. Sep 28, 2020 #70 of 143
    krkaufman

    krkaufman TDL shepherd

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    Just to be sure, does your laptop have a Gigabit Ethernet interface, or is it just Fast Ethernet?

    When things just aren't making sense, you can also roll back to the simplest configuration to test your cable modem's connection speed, connecting the laptop directly to the modem -- temporarily killing your Internet service for the rest of the house whilst the router remains disconnected.

    edit: p.s. Have you made any configuration changes to your coax plant at this point, or is it still as the Comcast tech left it, with the incoming cable making a direct connection to the 2-way splitter at the modem/DVR location?
     
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  11. Sep 28, 2020 #71 of 143
    skid71

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    Will do full power cycle as you described. I thought we were paying for 300mb, but a Comcast rep I spoke with on Saturday said we were in the 600 tier.
     
  12. Sep 28, 2020 #72 of 143
    skid71

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    Have changed nothing to the coax plant.
    Regarding connecting to the modem...that would be connecting the laptop directly to the modem via ethernet to run the speedtest correct?
    The laptop is many years old, my assumption would be non-gigabit. I don't think I can see to dig through the hardware list (can't think of the proper name) to see what kind of adapter it is.
     
  13. Sep 28, 2020 #73 of 143
    skid71

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    No change via ethernet > router (85.8), or wifi after unplugging Pro, power cycling modem and router. unplug router, unplug modem....waited about 10 minutes, powered up moedem, waited about 5 minutes, powered up router. Pro still unplugged.

    I didn't think I could connect the laptop to the modem via ethernet and get online. Both Pro and Hue hub could not get online via this connection (tried Friday, before the tech arrived)
     
  14. Sep 28, 2020 #74 of 143
    skid71

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    Ok, maybe we're getting somewhere.
    Speedtest ran via ethernet cable to modem. Router unplugged.
    First test was about 425mbps, the second about 320mbps.
    I guess it's time to speak with Google Nest WiFi support. Am I correct in assuming it is now a router issue?
     
  15. Sep 28, 2020 #75 of 143
    krkaufman

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    Heh, so even the 400 Mbps would be well shy of the goal line.

    Maybe a bit of both, given those modem test results — *IF* you’re paying for 600 Mbps. I’d run a few more tests direct via the modem to see if you get consistent numbers, and check your Comcast bill to see what Internet plan you’re paying for. If the tests don’t match the plan rates, then Comcast has some work to do — so long as you’re confident in the laptop’s NIC and choice of Internet speed test site. (Maybe try a few different sites or targets.)

    As for the speed tests via the router, I’d start by trying a different Ethernet cable between the router and modem, in case it’s somehow limiting the connection to Fast Ethernet. But the router tests should give the same results as the modem tests, since both the modem and router have Gigabit ports (right?); and a call to Google Support would be needed if the Nest is falling short.

    (Until the modem results stabilize, you couldn’t be certain that the router results weren’t due to modem connection variance.)
     
    Last edited: Sep 28, 2020
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  16. Sep 29, 2020 #76 of 143
    krkaufman

    krkaufman TDL shepherd

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    I don't know that your numbers, being a cable customer, would be as consistent as I just measured (local fiber provider), but here are the results of 4 speed tests I just ran (down/up):

    229.11 216.02
    229.25 215.95
    229.02 215.89
    229.47 216.07
    We're paying for 200 symmetrical.

    p.s. Ironically, one test registered around 95 Mbps in both directions ... because the RJ45 jack on the cable has gone bad, fitting loosely, and the laptop had dropped down to a Fast Ethernet link (100 Mbps) as I shifted the laptop about on my lap.
     
    Last edited: Sep 29, 2020
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  17. Sep 29, 2020 #77 of 143
    skid71

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    Sorry for the late reply. Yes, both modem & router have gigabit ports. I have found (nest wifi support & reddit) that a lot of people with Google Nest WiFi have had this problem (largely anecdotal)
    Nailing down the laptop's NIC details will be problematic, may have to wait until my wife can look at it. I'll have to change the laptop's DPI settings and run more tests with a direct connection to the modem. I'm working on getting the internet tier confirmed.

    For poops and giggles, I'm going to hook up my previous router to see if there is any difference between it and what the Google Nest WiFi is putting out (Netgear Nighthawk R7000)
    More testing to do.
    Huge thanks for keeping in touch on this bonkers 2020 journey.
     
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  18. Sep 29, 2020 #78 of 143
    skid71

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    Would this NIC be able to measure speed up to 600MB if connected via ethernet to modem? Assuming connected with the correct ethernet cable. I'm going to use the cable that was included in the Google Nest WiFi router box. (for sure the newest ethernet cable I've got)
     

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  19. Sep 29, 2020 #79 of 143
    krkaufman

    krkaufman TDL shepherd

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    Sounds like a plan. Here as needed. (There w/ mileage. ;))
     
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  20. Sep 29, 2020 #80 of 143
    krkaufman

    krkaufman TDL shepherd

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    Yes, presuming there isn’t something amiss in the configuration.

    FDE95CDF-2615-43F1-87BD-763F55C4FB9D.jpeg
    “Realtek PCIe GBE Family Controller” (“GBE” == Gigabit Ethernet)

    Once I’m back at the computer, I’ll see what the command is for reporting the current link rate for a given interface. (It should read “1.0 Gbps” when connected to another Gigabit port.)

    p.s. in the meantime, here’s a how-to for checking link rate via the Windows 10 UI:

    Don't know the speed of network card? Here's how to find out on Windows 10.

    (This is how I confirmed my bad RJ45 terminator earlier, when I was seeing sub-100 Mbps test speeds.)
     
    Last edited: Sep 29, 2020
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