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DECA vers CAT5/6

Discussion in 'DIRECTV Connected Home' started by David Carmichael, Aug 1, 2010.

  1. BudShark

    BudShark New Member

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    Aug 11, 2003
    I was referring to this unnecessary statement you made earlier.

    And as I said, you didn't troubleshoot the DECA side of it, and thats fine. That was your choice. Obviously something was wrong in your DECA environment as I think we'd be hearing of outrage if people were having to boot their receivers every day. And yes, there are people who have just as many DVRs as you on DECA.
     
  2. wavemaster

    wavemaster Godfather

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    Sep 15, 2007
    Mmmmmmmm newEgg

    I got a big Gb NAS box there a few months ago.

    MRV shouldn't drive your decision to go Gb, if you have a bunch of DVR's maybe. 100Mb is fine for a few DVR's. If you were out to buy a switch, always throw the few extra bucks (if you have them) for Gb. Even if all your devices are 100Mb they will still benefit from the faster processor and memory in the Gb switch.
     
  3. wavemaster

    wavemaster Godfather

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    The statement was true. It's usefulness is up to the reader - I'll jot down your vote.

    I did all the troubleshooting I was able to. DirectTV sent our 2 crews on two different occasions to troubleshoot as well. What else should I have done?
     
  4. mrfatboy

    mrfatboy Godfather

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    Agreed, I'm a "if I'll use it, I'll buy it" type of guy. No need now! I'll just have to buy something else :D
     
  5. lugnutathome

    lugnutathome Hall Of Fame

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    Woodburn, OR
    Bud:

    Could you please elaborate on these cases a bit. OK to do so in PM if you so choose.

    I'm an Ethernet user by need and typically support the vast majority of subscribers using DECA but I have seen a lot of "losing connection" incidents in the forums here and on D*'s tech forums.

    I'm curious as to the cause as it does seem to be fairly notable and seems to be primarily on DECA and the 24 series equipment seems to sit high on the list of these incidents as well...

    I'm imagining the auto detect for connection source on these units gets confusing information during normal operation and forces a reset outside a boot cycle orphaning the unit from the stack. But I've neither DECA nor a 24 series unit so it's pure speculation base on single sided observation.

    Just curiosity mind you. Till there is a 4 output SWM16 (I'm pushing far too much wire length to try a DECA conversion for just 2 outputs). Especially given a business quality 10/100 backbone switch serves my 9 receivers perfectly at present. (no need to fix that which isn't broken).

    Don "just tryin to git edumecated" Bolton

     
  6. BudShark

    BudShark New Member

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    Aug 11, 2003
    :nono:

    Spent time discussing it with people on this site who provide assistance. That is what others have done with arguably very good results.

    I don't care what you use. I do care when you bash people who spend time helping others, and that you make statements regarding limitations of DECA that aren't true (yes, we KNOW it didn't work for you, but its worked for others with as many DVRs - its not a DECA limitation it was a problem in your installation).

    I give you credit for trying DECA - I always have. I don't give you credit/respect for continuing to call people Yes men, or state they don't know things when they clearly do but just have a different perspective.
     
  7. BudShark

    BudShark New Member

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    The 3 "known" causes of DECA MRV disconnects were the following:

    1) Broadband DECA failure
    2) A router configured for scheduled reboots (it was DD-WRT setting left over from earlier testing for a non-MRV issue)
    3) DHCP Reserved addresses (resolved by changing to static addresses, did not test non-reserved addresses)
     
  8. BudShark

    BudShark New Member

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    I figured I'd answer these separately.

    I'd imagine the 24 is high in the list of MRV problems mostly because its the primary box being installed for MRV installations. I haven't heard/seen anything that implies the box has issues. The auto-switching between ethernet and DECA isn't really all that advanced - it almost looks more mechnical than anything. If Ethernet is plugged in when the box boots it uses that... otherwise, DECA.

    4 output SWM16? Piece of cake. Put a splitter at the output of the SWM16 and you've got 4 outputs... or am I not understanding?
     
  9. lugnutathome

    lugnutathome Hall Of Fame

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    SWM8's have 2 powered outputs each and in order to push all the line I have strung out in my residence I use both outputs on each. Apparently DECA can only use one of those outputs hence the SWM16 only having 2 instead of 4...

    Yes you can split an output but it reduces the signal in doing so. My farthest reaching line 191 ft in length is technically below required signal strength when fed from an 8 way splitter. I run it and another not so long run off the second SWM out port from a 2 way.

    I've a similar configuration on the other SWM8 in my realm. My home does not fit the typical install model and was wired up like a commercial install would be. My "head end" is 150 ft from the dish with service lines out to 191 ft. Slick as I've a central point for my Internet, Ethernet, Satellite, and Terrestrial networking. Not so slick as it does not conform to D*'s "one size fits all" residential service model. I've run in some ways "unsupported" since I activated service.

    And as to the 8 way and signal loss VOS did the calculations for me the day I had the SWM8s installed and was having issues with several receivers. I tend to think he's got a handle on that sort if thing:)

    Thanks for the responses!

    Don "just a old kid with too many toys" Bolton

     
  10. dennisj00

    dennisj00 Hall Of Fame

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    Lake Norman, NC
    I'm late to the party but here's my $0.02. . . SUPPORT. That one word summarizes D*'s decision to go DECA. The field guys know coax and coax connectors. . . beyond that there's a few installers that may know ethernet, but the combination of routers, switches and other devices make me NOT want to support it.

    I've posted over and over that if you put your H/HR2xes on a separate switch, you can isolate the bulk of traffic from your local LAN. I've also posted that there are some really BAD home networks implemented -- things like laptops working very poorly because they're connecting to the neighbors unsecured wireless rather than the local LAN because the connectivity is so bad.

    I'm sorry, but DECA is Ethernet over Coax. . . It seems to have RJ-45 Ethernet connectors on each end. I don't care how may layers or what optimization it may have internally, it looks like a ~200MBs Hub -- not sure one was ever made-- but it works with 6 or 7 - maybe 8 DVRs . . no better, no worse than a good wired network.

    NO ONE had produced any CONCRETE advantage of one over the other. If you have it, start a thread.

    So bottom line. If your existing network is working fine with your H/HRs and you don't need D* support, you don't need DECA. I changed from a perfectly good wired / wireless N network that was near perfect with lots of MRV testing when I added a 5th DVR and SWiM 16. I still have the same delay on starting a program. And I also posted during testing that I couldn't discern any difference between wired or wireless performance.

    If I weren't so lazy and busy on other things, I'd hook up the wired / wireless again and make some comparisons, but then folks would say that's just my configuration.

    I'm happy with DECA, I'm sure it consumes more power than a wired network but who's counting kilowatt hours???
     
  11. lugnutathome

    lugnutathome Hall Of Fame

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    I find item #2 interesting as I was wondering if a similar instruction might be present in the DECA cloud's firmware.

    The voices in my head were suggesting to me such may be present as a left over from when coax was the transport cable for networking and D* was using updates to that era's switching equipment's firmware as the basis to return to coax.

    My mind... is a terrible thing:D

    Don "but with all the voices I'm never alone :hurah:" Bolton

     
  12. BudShark

    BudShark New Member

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    You are thinking of whats on the other end of a DECA (DirecTV Ethernet to Coax Adapter)... the DECA is a bridge from MOCA to Ethernet. But one thing DECA definitely is NOT is Ethernet. DECA/MOCA is much more related to Token Ring than Ethernet.
     
  13. BudShark

    BudShark New Member

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    Since there is no "switch" or "hub" in a DECA cloud you can't really reboot the cloud - but it would be possible to make each DECA component reboot... but there's been no evidence of that to date. There's some pretty clear broadcasts that a DECA makes when it comes online... and I don't see those present if you just leave it up and running...
     
  14. dennisj00

    dennisj00 Hall Of Fame

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    And that's a good thing???!!!
     
  15. BudShark

    BudShark New Member

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    Sigh... :nono:

    In the context of a closed video streaming network with known bandwidth needs, control packets that benefit from the built in prioritization in MOCA, the ease of installation due to the physical cabling, and the bandwidth (with cloud speeds in excess of 200Mb) - Yes, actually it is a good thing.

    There are several threads on this forum - search for DECA vs Ethernet.

    Assuming MOCA is bad because its a shared token based system is the equivalent of thinking Ethernet is bad because you remember it from the old 10Base shared days.
     
  16. dennisj00

    dennisj00 Hall Of Fame

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    Once again, the only thing I agree with is . . 'the ease of installation due to the physical cabling'. That is the ONLY reason it's supported by D*.

    Everything else is pretty much the same, no matter what words are used.
     
  17. JimAtTheRez

    JimAtTheRez Legend

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    So, I have 4 HD DVR's(1-20, 1-22, 2-23's,) and 1 H24 receiver. My router is a Linksys WRT54G, and there is a cat 5 cable into it from one of the 23's in my office. My MRV has been working great for a couple of months, but suddenly recordings from the office have started to stutter, especially on my HR20 in my living room. I have no clue what to check. Any advice for a novice such as me? Thanks in advance for your help.
     
  18. DogLover

    DogLover Hall Of Fame

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    First thing to check is if the recordings have problems on the DVR they are recorded on. Play them local, and if you still see problems. If there are problems playing the program locally, then it is likely a problem with that DVR.
     
  19. BudShark

    BudShark New Member

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    Aug 11, 2003
    I'd suggest verifying as Dog says... then after that, give us a feel for how your system is setup from the dish on down.

    Also - describe the source (it sounds like its either a 22 or one of the 23s) and what the result is. You seem to imply its worse in some areas than others.
     
  20. BudShark

    BudShark New Member

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    Aug 11, 2003
    If you're happy, I'm happy.
     

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